:root {
    --primary: #f58220;
    --primary-hover: #e06d12;
    --bg-color: #f8fafc;
    --sidebar-bg: #ffffff;
    --text-main: #334155;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --card-bg: #ffffff;
    --alert-info-bg: #e0f2fe;
    --alert-info-text: #0369a1;
    --alert-warn-bg: #fef08a;
    --alert-warn-text: #a16207;
    --alert-err-bg: #fecaca;
    --alert-err-text: #b91c1c;
    --alert-success-bg: rgba(16, 185, 129, 0.1);
    --alert-success-text: #065f46;
    --widget-bg: rgba(15, 23, 42, 0.04);
    --widget-border: rgba(15, 23, 42, 0.08);
    --timer-bg: rgba(15, 23, 42, 0.08);
    --chk-label-color: #475569;
    --chk-label-checked: #0f172a;
    --timer-text-color: #0f172a;
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    --bg-color: #0f172a;
    --sidebar-bg: #1e293b;
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --card-bg: #1e293b;
    --alert-info-bg: #0c4a6e;
    --alert-info-text: #38bdf8;
    --alert-warn-bg: #713f12;
    --alert-warn-text: #fde047;
    --alert-err-bg: #7f1d1d;
    --alert-err-text: #fca5a5;
    --alert-success-bg: rgba(16, 185, 129, 0.15);
    --alert-success-text: #34d399;
    --widget-bg: rgba(15, 23, 42, 0.45);
    --widget-border: rgba(255, 255, 255, 0.08);
    --timer-bg: rgba(255, 255, 255, 0.1);
    --chk-label-color: #94a3b8;
    --chk-label-checked: #f8fafc;
    --timer-text-color: #ffffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 17px;
}

body {
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    transition: var(--transition);
}

.app-container {
    display: flex;
    height: 100vh;
}

.sidebar {
    width: 300px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 20px;
    box-shadow: 4px 0 15px rgba(0,0,0,0.03);
    z-index: 10;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.logo h2 {
    color: var(--primary);
    font-weight: 700;
}

.badge {
    background-color: var(--primary);
    color: #fff;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.search-box input {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    outline: none;
    transition: var(--transition);
    margin-bottom: 20px;
}

.search-box input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.2);
}

nav#toc {
    flex-grow: 1;
    overflow-y: auto;
}

nav#toc ul {
    list-style: none;
}

nav#toc li {
    margin-bottom: 5px;
}

nav#toc a {
    display: block;
    padding: 10px 15px;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 8px;
    transition: var(--transition);
    font-weight: 500;
}

nav#toc a:hover {
    background-color: var(--bg-color);
    color: var(--primary);
}

nav#toc a.active {
    background-color: rgba(6, 182, 212, 0.1);
    color: var(--primary);
}

.theme-toggle button {
    width: 100%;
    padding: 10px;
    background-color: var(--border-color);
    color: var(--text-main);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.theme-toggle button:hover {
    background-color: var(--text-muted);
    color: #fff;
}

.content {
    flex-grow: 1;
    overflow-y: auto;
    padding: 40px 60px;
    scroll-behavior: smooth;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

header p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 40px;
}

.chapter {
    margin-bottom: 60px;
    scroll-margin-top: 40px;
}

.chapter h2 {
    font-size: 1.8rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.chapter h3 {
    font-size: 1.3rem;
    margin: 20px 0 10px;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
    transition: var(--transition);
}

.card:hover {
    box-shadow: 0 10px 15px rgba(0,0,0,0.05);
    transform: translateY(-2px);
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

/* MCU card — flex column so button anchors to bottom */
.mcu-card-link {
    display: flex;
    flex-direction: column;
}

/* Simulator launch button on MCU card */
.sim-launch-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 14px;
    padding: 8px 16px;
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: #fff;
    font-size: 0.82rem;
    font-weight: 600;
    border-radius: 20px;
    text-decoration: none;
    align-self: flex-start;
    box-shadow: 0 2px 8px rgba(245, 130, 32, 0.35);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.sim-launch-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(245, 130, 32, 0.5);
    color: #fff;
}


ul, ol {
    margin-left: 20px;
    margin-bottom: 15px;
}

li {
    margin-bottom: 8px;
}

/* Accordion */
.accordion {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.accordion-item {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    background-color: var(--card-bg);
}

.accordion-header {
    width: 100%;
    padding: 15px 20px;
    background: none;
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.accordion-header:hover {
    background-color: rgba(6, 182, 212, 0.05);
}

.accordion-header::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--primary);
    transition: transform 0.3s ease;
}

.accordion-item.active .accordion-header::after {
    transform: rotate(45deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding: 0 20px;
}

.accordion-item.active .accordion-content {
    padding: 15px 20px;
}

/* Specs Card Grid */
.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 15px;
}
.spec-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    margin-bottom: 0 !important; /* Override default card margin */
}
.spec-card-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--primary);
    margin: 0 0 12px 0;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}
.spec-card-body {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}
.spec-card-body ul, .spec-card-body ol {
    margin: 0 0 16px 0;
    padding-left: 20px;
}
.spec-card-body ul li, .spec-card-body ol li {
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 8px;
    color: var(--text-main);
}
.spec-card .gif-preview {
    margin-top: auto;
}

/* GIF Preview inside accordions & cards */
.gif-preview {
    margin-top: 16px;
    border-radius: 10px;
    overflow: hidden;
    background-color: #f1f5f9;
    border: 1px solid var(--border-color);
    text-align: center;
}

[data-theme="dark"] .gif-preview {
    background-color: #0f172a;
}

.gif-preview img {
    width: 100%;
    max-height: 320px;
    object-fit: contain;
    display: block;
    border-radius: 10px;
}

/* Alerts */
.alert {
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    border-left: 4px solid;
}

.alert-important {
    background-color: var(--alert-info-bg);
    color: var(--alert-info-text);
    border-left-color: #0284c7;
}

.alert-warning {
    background-color: var(--alert-warn-bg);
    color: var(--alert-warn-text);
    border-left-color: #ca8a04;
}

.badge.error {
    background-color: var(--alert-err-bg);
    color: var(--alert-err-text);
}

footer {
    margin-top: 60px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-muted);
}

/* Tools Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.tool-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
}

.tool-card:hover {
    box-shadow: 0 12px 20px rgba(0, 0, 0, 0.08);
    transform: translateY(-4px);
}

.tool-image-wrapper {
    width: 100%;
    height: 160px;
    background-color: #f1f5f9;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
    border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] .tool-image-wrapper {
    background-color: #0f172a;
}

.tool-image-wrapper img, .tool-image-wrapper model-viewer {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 8px;
    transition: transform 0.5s ease;
}

.tool-image-wrapper model-viewer {
    --poster-color: transparent;
    outline: none;
}

.tool-card:hover .tool-image-wrapper img {
    transform: scale(1.08);
}

.tool-info {
    padding: 15px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.tool-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 5px;
}

.tool-spec {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Size Selector */
.size-selector {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin: 8px 0 12px 0;
}

.size-btn {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 4px 8px;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
}

.size-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.size-btn.active {
    background-color: var(--primary);
    border-color: var(--primary);
    color: #ffffff;
}

/* MCU Simulator Container */
.mcu-simulator-container {
    padding: 30px;
    margin-top: 30px;
    border-radius: 16px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    padding-top: 0;
    padding-bottom: 0;
    margin-top: 0;
    border-width: 0;
    transition: max-height 0.6s ease, opacity 0.4s ease, padding 0.4s ease, margin 0.4s ease, border-width 0.4s ease;
}

.mcu-simulator-container.sim-visible {
    max-height: 9999px;
    opacity: 1;
    padding: 30px;
    margin-top: 30px;
    border-width: 1px;
}

.sim-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 20px;
    margin-bottom: 25px;
}

.sim-header h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
}

.sim-subtitle {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Status Widget */
.sim-status-widget {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    width: 180px;
    padding: 10px 15px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.widget-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.widget-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    font-weight: 500;
}

.widget-val {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-main);
    font-family: monospace;
}

.widget-badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 4px;
    border: 1px solid transparent;
}

.badge-ready {
    background-color: rgba(34, 197, 94, 0.1);
    color: #22c55e;
    border-color: rgba(34, 197, 94, 0.2);
}

.badge-drive {
    background-color: rgba(6, 182, 212, 0.1);
    color: var(--primary);
    border-color: rgba(6, 182, 212, 0.2);
}

.badge-regen {
    background-color: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
    border-color: rgba(59, 130, 246, 0.2);
}

.badge-error {
    background-color: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border-color: rgba(239, 68, 68, 0.2);
}

/* Simulator Content Layout */
.sim-content {
    display: flex;
    flex-direction: column;
    position: relative;
    padding: 20px 0;
    gap: 0;
    overflow-x: auto;
}

/* Live Mode: dim training inputs when real IoT device is connected */
.sim-content.live-mode .sim-row-inputs {
    opacity: 0.4;
    pointer-events: none;
    transition: opacity 0.4s ease;
}
.sim-content.live-mode .sim-row-inputs::after {
    content: 'LIVE DATA — Training inputs disabled';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 1px;
    color: #10b981;
    background: rgba(16,185,129,0.1);
    border: 1px solid rgba(16,185,129,0.3);
    padding: 4px 10px;
    border-radius: 6px;
    pointer-events: none;
    z-index: 99;
    white-space: nowrap;
}


/* Rows for Orthogonal Layout */
.sim-row-inputs {
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    gap: 15px;
    width: 100%;
    margin-bottom: 50px; /* Space for horizontal bus line */
    position: relative;
    z-index: 2;
}

.sim-row-middle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    margin-bottom: 50px; /* Space for vertical motor line */
    position: relative;
    z-index: 2;
}

.sim-row-bottom {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    position: relative;
    z-index: 2;
}

.sim-input-box {
    flex: 1 1 0px;
    min-width: 160px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 12px 15px;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: var(--transition);
}


.sim-input-box.active {
    border-color: var(--primary);
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.1);
}

.sim-input-box.active-brake {
    border-color: #3b82f6;
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.1);
}

.sim-input-box.error {
    border-color: #ef4444;
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.1);
}

.input-tag {
    font-size: 0.65rem;
    color: var(--text-muted);
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 2px;
}

.sim-input-box h5 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-main);
}

.input-volt {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    font-family: monospace;
    margin-top: 2px;
    margin-bottom: 8px;
}

.sim-input-box.active .input-volt {
    color: var(--primary);
}

.sim-input-box.active-brake .input-volt {
    color: #3b82f6;
}

.sim-input-box.error .input-volt {
    color: #ef4444;
}

.input-controls {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.input-controls input[type="range"] {
    width: 100%;
    accent-color: var(--primary);
    cursor: pointer;
}

.range-lbl {
    font-size: 0.65rem;
    color: var(--text-muted);
}

.switch-lbl {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--text-main);
    cursor: pointer;
}

.switch-lbl input {
    cursor: pointer;
}

/* SVG Connectors */
.sim-svg-wrapper {
    flex-grow: 1;
    height: 320px;
    min-width: 80px;
    position: relative;
}

.sim-svg-wrapper svg {
    width: 100%;
    height: 100%;
}

.sim-svg-wrapper-motor {
    flex-grow: 1;
    height: 40px;
    min-width: 60px;
    position: relative;
}

.sim-svg-wrapper-motor svg {
    width: 100%;
    height: 100%;
    overflow: visible;
}


/* Flow Line Animation */
.pulse-path {
    stroke: transparent;
    stroke-width: 2.5;
    stroke-linecap: round;
}

.pulse-path-motor {
    stroke: transparent;
    stroke-width: 3.5;
    stroke-linecap: round;
}

/* Animation states triggered via JS */
.sim-content.state-drive #pulseBattery {
    stroke: var(--primary);
    stroke-dasharray: 6 8;
    animation: flowPulse 0.5s linear infinite;
}
.sim-content.state-drive #pulseThrottle {
    stroke: var(--primary);
    stroke-dasharray: 6 8;
    animation: flowPulse 0.5s linear infinite;
}
.sim-content.state-drive #pulsePas {
    stroke: var(--primary);
    stroke-dasharray: 6 8;
    animation: flowPulse 0.5s linear infinite;
}
.sim-content.state-drive #pulseMotor {
    stroke: var(--primary);
    stroke-dasharray: 8 10;
    animation: flowPulse 0.4s linear infinite;
}

/* Regen braking flow - flow pulses backward from motor to battery! */
.sim-content.state-regen #pulseMotor {
    stroke: #3b82f6;
    stroke-dasharray: 8 10;
    animation: flowPulseReverse 0.6s linear infinite;
}
.sim-content.state-regen #pulseBattery {
    stroke: #3b82f6;
    stroke-dasharray: 6 8;
    animation: flowPulseReverse 0.6s linear infinite;
}
.sim-content.state-regen #pulseBrake {
    stroke: #3b82f6;
    stroke-dasharray: 6 8;
    animation: flowPulse 0.6s linear infinite;
}

/* LVC Cutoff State - error signal */
.sim-content.state-error #pulseBattery {
    stroke: #ef4444;
    stroke-dasharray: 4 4;
}

@keyframes flowPulse {
    to {
        stroke-dashoffset: -28;
    }
}

@keyframes flowPulseReverse {
    to {
        stroke-dashoffset: 28;
    }
}

/* MCU Box */
.sim-mcu {
    width: 220px;
    background-color: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 14px;
    padding: 25px 20px;
    text-align: center;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.sim-mcu.active {
    border-color: var(--primary);
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.15);
}

.sim-mcu.active-regen {
    border-color: #3b82f6;
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.15);
}

.sim-mcu.error {
    border-color: #ef4444;
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.15);
}

.mcu-tag {
    font-size: 0.65rem;
    color: var(--text-muted);
    font-weight: 600;
    letter-spacing: 1.5px;
    margin-bottom: 5px;
}

.sim-mcu h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-main);
}

.mcu-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.mcu-divider {
    width: 60px;
    height: 1px;
    background-color: var(--border-color);
    margin: 12px 0;
}

.mcu-state-badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 20px;
    letter-spacing: 0.5px;
}

.mcu-state-badge.badge-idle {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
}

.mcu-state-badge.badge-drive {
    background-color: rgba(6, 182, 212, 0.15);
    color: #ffffff;
}

[data-theme="dark"] .mcu-state-badge.badge-drive {
    color: var(--primary);
}

.mcu-state-badge.badge-regen {
    background-color: rgba(59, 130, 246, 0.15);
    color: #3b82f6;
}

.mcu-state-badge.badge-error {
    background-color: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}

.mcu-voltage-readout {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: monospace;
    margin-top: 10px;
}

/* Header widgets row */
.sim-header-widgets {
    display: flex;
    gap: 10px;
}

/* MCU Battery Bar */
.mcu-battery-bar-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    width: 100%;
}

.mcu-battery-bar-track {
    flex-grow: 1;
    height: 6px;
    background-color: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.mcu-battery-bar-fill {
    height: 100%;
    width: 0%;                   /* starts at 0 — JS sets the real value */
    background: linear-gradient(90deg, #22c55e, #86efac);
    border-radius: 4px;
    transition: width 0.5s ease, background 0.5s ease, opacity 0.3s ease;
}

/* Snap bar to zero instantly (no animation) when system powers off */
.mcu-battery-bar-fill.offline {
    width: 0% !important;
    opacity: 0;
    transition: none;
}

.mcu-battery-bar-fill.medium {
    background: linear-gradient(90deg, #f59e0b, #fcd34d);
}

.mcu-battery-bar-fill.low {
    background: linear-gradient(90deg, #ef4444, #f87171);
}

.mcu-battery-pct {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
    font-family: monospace;
    min-width: 32px;
    text-align: right;
}

/* MCU Live Readings */
.mcu-live-readings {
    display: flex;
    gap: 6px;
    margin-top: 10px;
    width: 100%;
    justify-content: space-around;
}

.mcu-reading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 5px 8px;
    flex: 1;
}

.mcu-reading-lbl {
    font-size: 0.6rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.mcu-reading-val {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-main);
    font-family: monospace;
}

/* Telemetry Strip */
.sim-telemetry {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 10px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.tele-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 12px 8px;
    transition: var(--transition);
    text-align: center;
}

.tele-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    transition: color 0.3s ease;
}
.tele-icon svg {
    width: 100%;
    height: 100%;
    stroke-width: 2.2;
}
.tele-icon.draw { color: #f58220; }
.tele-icon.rpm { color: #f58220; }
.tele-icon.temp { color: #f58220; }
.tele-icon.power { color: #f58220; }
.tele-icon.soc { color: #f58220; }
.tele-icon.range { color: #f58220; }

.tele-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tele-val {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-main);
    font-family: monospace;
    transition: color 0.3s ease;
}

.tele-note {
    font-size: 0.65rem;
    color: var(--text-muted);
    font-weight: 500;
    letter-spacing: 0.3px;
    margin-top: -2px;
}

.tele-item[title] {
    cursor: help;
}


.tele-item.active-tele {
    border-color: var(--primary);
}

.tele-item.active-tele .tele-val {
    color: var(--primary);
}

.tele-item.regen-tele {
    border-color: #3b82f6;
}

.tele-item.regen-tele .tele-val {
    color: #3b82f6;
}

.tele-item.error-tele {
    border-color: #ef4444;
}

.tele-item.error-tele .tele-val {
    color: #ef4444;
}

/* System power-off state: entire tile dims like a dead instrument cluster */
.tele-item.offline-tele {
    opacity: 0.35;
    filter: grayscale(1);
    border-color: var(--border-color);
    transition: opacity 0.4s ease, filter 0.4s ease;
}
.tele-item.offline-tele .tele-val {
    color: var(--text-muted);
    letter-spacing: 2px;
}


@media (max-width: 900px) {
    .sim-telemetry {
        grid-template-columns: repeat(3, 1fr);
    }
}



/* Motor Section */
.sim-motor-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    width: 180px;
    flex-shrink: 0;
}

.sim-motor {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    background-color: var(--card-bg);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: var(--transition);
}

.sim-motor.active {
    border-color: var(--primary);
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.1);
}

.sim-motor.active-regen {
    border-color: #3b82f6;
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.1);
}

.motor-rotor {
    position: absolute;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.15;
    transition: transform 0.1s linear;
}

[data-theme="dark"] .motor-rotor {
    opacity: 0.25;
}

.rotor-spoke {
    position: absolute;
    width: 6px;
    height: 100%;
    background-color: var(--text-main);
}

.rotor-spoke:nth-child(2) {
    transform: rotate(60deg);
}

.rotor-spoke:nth-child(3) {
    transform: rotate(120deg);
}

.motor-label {
    z-index: 2;
    text-align: center;
    display: flex;
    flex-direction: column;
    background-color: var(--card-bg);
    padding: 10px;
    border-radius: 50%;
    width: 120px;
    height: 120px;
    align-items: center;
    justify-content: center;
    box-shadow: inset 0 0 10px rgba(0,0,0,0.02);
}

.motor-tag {
    font-size: 0.65rem;
    color: var(--text-muted);
    font-weight: 600;
    letter-spacing: 1px;
}

.motor-name {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.2;
}

.motor-loc {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.motor-state-text {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

.motor-state-text.active {
    color: var(--primary);
}

.motor-state-text.active-regen {
    color: #3b82f6;
}

.motor-state-text.error {
    color: #ef4444;
}

/* Spinner Animations */
.spin-slow {
    animation: rotateRotor 2s linear infinite;
}

.spin-medium {
    animation: rotateRotor 1s linear infinite;
}

.spin-fast {
    animation: rotateRotor 0.4s linear infinite;
}

@keyframes rotateRotor {
    to {
        transform: rotate(360deg);
    }
}

.hidden {
    display: none !important;
}

/* ─── How-to Instruction Bar ──────────────────────────────────────────────── */
.sim-howto {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: linear-gradient(135deg, rgba(6, 182, 212,0.06), rgba(6, 182, 212,0.02));
    border: 1px solid rgba(6, 182, 212,0.2);
    border-radius: 10px;
    padding: 14px 18px;
    margin-bottom: 16px;
}

.howto-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
    margin-top: 1px;
}

.howto-text {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.howto-hl {
    color: var(--primary);
    font-weight: 600;
}

/* ─── Fault Scenario Buttons ──────────────────────────────────────────────── */
.sim-scenarios {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.scenario-label {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    white-space: nowrap;
    margin-right: 4px;
}

.scenario-btn {
    font-size: 0.78rem;
    font-weight: 600;
    border: 1.5px solid var(--border-color);
    border-radius: 8px;
    padding: 7px 14px;
    cursor: pointer;
    background-color: var(--bg-color);
    color: var(--text-main);
    transition: all 0.2s ease;
    letter-spacing: 0.3px;
    white-space: nowrap;
}

.scenario-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.scenario-btn.active-scenario {
    box-shadow: 0 0 0 2px currentColor;
}

/* Idle */
.scenario-idle {
    border-color: var(--border-color);
}
.scenario-idle:hover,
.scenario-idle.active-scenario {
    border-color: #94a3b8;
    color: #94a3b8;
    background: rgba(148,163,184,0.08);
}

/* Drive */
.scenario-drive {
    border-color: rgba(6, 182, 212,0.3);
}
.scenario-drive:hover,
.scenario-drive.active-scenario {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(6, 182, 212,0.08);
}

/* PAS */
.scenario-pas {
    border-color: rgba(34,197,94,0.3);
}
.scenario-pas:hover,
.scenario-pas.active-scenario {
    border-color: #22c55e;
    color: #22c55e;
    background: rgba(34,197,94,0.08);
}

/* Regen */
.scenario-regen {
    border-color: rgba(59,130,246,0.3);
}
.scenario-regen:hover,
.scenario-regen.active-scenario {
    border-color: #3b82f6;
    color: #3b82f6;
    background: rgba(59,130,246,0.08);
}

/* Fault */
.scenario-fault {
    border-color: rgba(239,68,68,0.3);
}
.scenario-fault:hover,
.scenario-fault.active-scenario {
    border-color: #ef4444;
    color: #ef4444;
    background: rgba(239,68,68,0.08);
}

/* ─── State Color Legend ───────────────────────────────────────────────────── */
.sim-legend {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px 16px;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 16px;
    margin-bottom: 20px;
}

.legend-title {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-right: 4px;
}

.legend-item {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 3px 10px;
    border-radius: 20px;
    white-space: nowrap;
}

.legend-idle  { color: #94a3b8; background: rgba(148,163,184,0.1); border: 1px solid rgba(148,163,184,0.2); }
.legend-drive { color: var(--primary); background: rgba(6, 182, 212,0.08); border: 1px solid rgba(6, 182, 212,0.2); }
.legend-regen { color: #3b82f6; background: rgba(59,130,246,0.08); border: 1px solid rgba(59,130,246,0.2); }
.legend-fault { color: #ef4444; background: rgba(239,68,68,0.08); border: 1px solid rgba(239,68,68,0.2); }

/* ─── Wire / Signal Line Legend ───────────────────────────────────────────── */
.sim-wire-legend {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px 24px;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 16px;
    margin-bottom: 20px;
}

.wire-legend-title {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-right: 4px;
    white-space: nowrap;
}

.wire-legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.wire-sample {
    width: 60px;
    height: 10px;
    flex-shrink: 0;
    overflow: visible;
}

.wire-lbl {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    white-space: nowrap;
}

.active-wire-lbl   { color: var(--primary); }
.inactive-wire-lbl { color: #94a3b8; }
.regen-wire-lbl    { color: #3b82f6; }
.fault-wire-lbl    { color: #ef4444; }

.wire-legend-note {
    font-size: 0.65rem;
    color: var(--text-muted);
    font-style: italic;
    margin-left: auto;
    white-space: nowrap;
}

/* Card sizes inside the horizontal middle row */
.sim-row-middle .sim-iot-card {
    width: 220px;
    flex-shrink: 0;
}
.sim-row-middle .sim-mcu {
    width: 240px;
    flex-shrink: 0;
}
.sim-row-middle .sim-display-card {
    width: 220px;
    flex-shrink: 0;
}




/* ─── IoT Telemetry Module Card ──────────────────────────────────────────── */
.sim-iot-card {
    width: 100%;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 10px 14px;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.sim-iot-card.active {
    border-color: #10b981;
    box-shadow: 0 0 10px rgba(16,185,129,0.1);
}

.sim-iot-card.inactive {
    opacity: 0.5;
}

.iot-tag {
    font-size: 0.55rem;
    color: var(--text-muted);
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 2px;
}

.sim-iot-card h5 {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-main);
    margin: 0;
}

.iot-status-row {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 4px;
}

.iot-dot {
    width: 6px;
    height: 6px;
    background-color: #94a3b8;
    border-radius: 50%;
    display: inline-block;
    transition: background-color 0.3s ease;
}

.iot-dot.active {
    background-color: #10b981;
    box-shadow: 0 0 6px #10b981;
    animation: pulseGlow 1.5s infinite alternate;
}

.iot-dot.error {
    background-color: #ef4444;
    box-shadow: 0 0 6px #ef4444;
}

.iot-state-text {
    font-size: 0.65rem;
    color: var(--text-muted);
    font-family: monospace;
}

/* ── IoT Mode Badge ─────────────────────────────────────────────────────── */
.iot-mode-badge {
    font-size: 0.5rem;
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    padding: 2px 6px;
    border-radius: 4px;
    background: rgba(148,163,184,0.12);
    color: var(--text-muted);
    border: 1px solid rgba(148,163,184,0.2);
    margin-left: auto;
    transition: all 0.3s ease;
}
.iot-mode-badge.live {
    background: rgba(16,185,129,0.15);
    color: #10b981;
    border-color: rgba(16,185,129,0.35);
}

/* ── IoT Connect Panel ──────────────────────────────────────────────────── */
.iot-connect-panel {
    display: flex;
    flex-direction: column;
    gap: 5px;
    margin-top: 8px;
}

.iot-url-input {
    background: rgba(0,0,0,0.25);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    color: var(--text-main);
    font-family: monospace;
    font-size: 0.6rem;
    padding: 4px 8px;
    outline: none;
    transition: border-color 0.2s;
    width: 100%;
    box-sizing: border-box;
}
.iot-url-input:focus {
    border-color: #10b981;
}
.iot-url-input:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.iot-connect-btn {
    width: 100%;
    padding: 5px 8px;
    border-radius: 5px;
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    cursor: pointer;
    border: 1px solid #10b981;
    background: transparent;
    color: #10b981;
    transition: all 0.2s ease;
}
.iot-connect-btn:hover {
    background: rgba(16,185,129,0.15);
}
.iot-connect-btn.connecting {
    border-color: #f59e0b;
    color: #f59e0b;
    animation: iotBtnPulse 0.8s infinite alternate;
    cursor: wait;
}
.iot-connect-btn.live {
    border-color: #ef4444;
    color: #ef4444;
    background: rgba(239,68,68,0.08);
}
.iot-connect-btn.live:hover {
    background: rgba(239,68,68,0.18);
}

@keyframes iotBtnPulse {
    from { opacity: 0.6; }
    to   { opacity: 1.0; }
}

/* ── IoT Live Data Strip ────────────────────────────────────────────────── */
.iot-live-strip {
    display: none;
    flex-direction: column;
    gap: 3px;
    margin-top: 6px;
    padding-top: 6px;
    border-top: 1px solid var(--border-color);
}
.iot-live-strip.visible {
    display: flex;
}
.iot-live-val {
    font-size: 0.74rem;
    font-family: monospace;
    font-weight: 700;
    color: #047857;
    background: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.18);
    padding: 5px 10px;
    border-radius: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 2px;
}

[data-theme="dark"] .iot-live-val {
    color: #34d399;
    background: rgba(52, 211, 153, 0.1);
    border-color: rgba(52, 211, 153, 0.2);
}

/* ── IoT dot: connecting state ──────────────────────────────────────────── */
.iot-dot.connecting {
    background-color: #f59e0b;
    box-shadow: 0 0 6px #f59e0b;
    animation: pulseGlow 0.5s infinite alternate;
}


@keyframes pulseGlow {
    from { opacity: 0.6; }
    to { opacity: 1; }
}

/* ─── Instrument Console TFT Card ────────────────────────────────────────── */
.sim-display-card {
    width: 100%;
    background-color: var(--card-bg);
    border: 1.5px solid var(--border-color);
    border-radius: 12px;
    padding: 10px;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.sim-display-card.active {
    border-color: var(--primary);
    box-shadow: 0 0 12px rgba(245, 130, 32, 0.15);
}

.sim-display-card.inactive {
    opacity: 0.4;
}

.dash-tag {
    font-size: 0.55rem;
    color: var(--text-muted);
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 4px;
    text-align: center;
}

.tft-screen {
    background-color: #0f172a; /* Slate 900 */
    border: 1px solid #1e293b;
    border-radius: 6px;
    padding: 8px 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #e2e8f0;
}

.tft-header {
    font-size: 0.55rem;
    font-weight: 700;
    color: #475569;
    letter-spacing: 1.5px;
    text-align: center;
    border-bottom: 1px solid #1e293b;
    width: 100%;
    padding-bottom: 4px;
    margin-bottom: 4px;
}

.tft-speed-wrap {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 2px;
    margin: 4px 0;
}

.tft-speed-val {
    font-size: 1.8rem;
    font-weight: 800;
    color: #f1f5f9;
    font-family: monospace;
    line-height: 1;
}

.tft-speed-unit {
    font-size: 0.65rem;
    color: #64748b;
    font-weight: 600;
}

.tft-footer {
    display: flex;
    justify-content: space-between;
    width: 100%;
    font-size: 0.6rem;
    font-weight: 600;
    margin-top: 4px;
    border-top: 1px solid #1e293b;
    padding-top: 4px;
}

.tft-bat {
    color: #10b981;
    font-family: monospace;
}

.tft-status {
    padding: 0 4px;
    border-radius: 4px;
}








/* ═══════════════════════════════════════════════════════════════
   FAULT DIAGNOSTIC SIMULATOR — Section 8
   ═══════════════════════════════════════════════════════════════ */
.fault-sim-panel {
    margin: 24px 0;
    padding: 24px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: var(--card-bg);
}
.fault-sim-hdr { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 18px; padding-bottom: 14px; border-bottom: 1px solid var(--border-color); }
.fault-sim-hdr h4 { font-size: 1.05rem; font-weight: 700; color: var(--text-main); margin-bottom: 4px; }
.fault-sim-subtitle { font-size: 0.78rem; color: var(--text-muted); }
.fault-clear-btn { padding: 6px 14px; border: 1px solid var(--border-color); background: transparent; border-radius: 20px; cursor: pointer; font-size: 0.78rem; color: var(--text-muted); transition: all 0.2s; flex-shrink: 0; }
.fault-clear-btn:hover { background: #ef4444; color: #fff; border-color: #ef4444; }
.fault-code-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.fault-code-btn { display: inline-flex; align-items: center; gap: 7px; padding: 6px 14px 6px 8px; border: 1px solid var(--border-color); border-radius: 8px; background: var(--card-bg); cursor: pointer; font-size: 0.8rem; font-weight: 500; color: var(--text-main); transition: all 0.2s; }
.fault-code-btn:hover  { border-color: #ef4444; background: rgba(239,68,68,0.06); }
.fault-code-btn.active { border-color: #ef4444; background: rgba(239,68,68,0.1); color: #ef4444; font-weight: 700; }
.fault-sim-body { display: grid; grid-template-columns: 1fr 340px; gap: 18px; align-items: start; }
.fault-diagram-wrap { background: var(--bg-color); border: 1px solid var(--border-color); border-radius: 12px; padding: 10px; }
.fault-diagram-wrap svg { width: 100%; height: auto; display: block; }
.diag-node rect { fill: var(--card-bg); stroke: var(--border-color); stroke-width: 1.5; transition: fill 0.35s, stroke 0.35s, stroke-width 0.35s; }
.diag-node-mcu rect { fill: rgba(37,99,235,0.06); stroke: var(--primary); stroke-width: 2; }
.node-icon {
    stroke: #475569;
    stroke-width: 1.8;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: stroke 0.35s;
}
[data-theme="dark"] .node-icon {
    stroke: #94a3b8;
}
.diag-node.fault-active .node-icon {
    stroke: #ef4444;
}
.diag-node-mcu.fault-receiving .node-icon {
    stroke: #f58220;
}
.node-title { font-size: 9px; font-weight: 700; fill: #334155; font-family: 'Inter', sans-serif; }
.node-sub { font-size: 7.5px; fill: #94a3b8; font-family: 'Inter', sans-serif; }
.node-fault-tag { font-size: 7.5px; fill: #ef4444; font-weight: 700; font-family: 'Inter', sans-serif; }
[data-theme="dark"] .node-title { fill: #e2e8f0; }
[data-theme="dark"] .node-sub { fill: #64748b; }
.diag-node.fault-active rect { fill: rgba(239,68,68,0.1); stroke: #ef4444; stroke-width: 2.5; animation: faultNodePulse 1.2s ease-in-out infinite; }
@keyframes faultNodePulse { 0%,100% { filter: drop-shadow(0 0 3px rgba(239,68,68,0.4)); } 50% { filter: drop-shadow(0 0 10px rgba(239,68,68,0.85)); } }
.diag-node-mcu.fault-receiving rect { fill: rgba(245, 130, 32,0.08); stroke: #f58220; }
.diag-wire { stroke: #94a3b8; stroke-width: 1.5; fill: none; transition: stroke 0.35s, stroke-width 0.35s; }
.diag-thick { stroke-width: 3; }
.diag-wire.fault-active { stroke: #ef4444; stroke-dasharray: 8 4; stroke-width: 2.5; animation: wireFlow 0.5s linear infinite; marker-end: url(#arr-f); }
.diag-wire.power-flowing { stroke: #22c55e; stroke-dasharray: 8 4; stroke-width: 2.5; animation: wireFlow 0.5s linear infinite; marker-end: url(#arr-g); }
.diag-thick.fault-active { stroke-width: 4; }
@keyframes wireFlow { from { stroke-dashoffset: 0; } to { stroke-dashoffset: -24; } }
.fault-detail-panel { background: var(--bg-color); border: 1px solid var(--border-color); border-radius: 12px; padding: 18px; min-height: 220px; }
.fault-placeholder { display: flex; flex-direction: column; align-items: center; text-align: center; padding: 28px 10px; gap: 10px; }
.fault-ph-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 8px;
}
.fault-placeholder p { font-size: 0.82rem; line-height: 1.65; color: var(--text-muted); }
.fault-detail-header { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; padding-bottom: 10px; border-bottom: 1px solid var(--border-color); }
.fault-detail-code { font-size: 1.3rem; font-weight: 800; color: #ef4444; }
.fault-detail-name { font-size: 0.9rem; font-weight: 700; color: var(--text-main); }
.fault-symptom { background: rgba(239,68,68,0.07); border-left: 3px solid #ef4444; padding: 8px 12px; border-radius: 0 6px 6px 0; font-size: 0.78rem; color: var(--text-main); margin-bottom: 14px; line-height: 1.55; }
.fault-section-title { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); margin-bottom: 7px; }
.fault-steps-list { list-style: none; margin: 0 0 14px 0; padding: 0; display: flex; flex-direction: column; gap: 5px; }
.fault-step-item { display: flex; align-items: flex-start; gap: 8px; cursor: pointer; padding: 6px 8px; border-radius: 6px; font-size: 0.76rem; line-height: 1.55; color: var(--text-main); transition: background 0.15s; user-select: none; }
.fault-step-item:hover { background: rgba(0,0,0,0.04); }
[data-theme="dark"] .fault-step-item:hover { background: rgba(255,255,255,0.04); }
.fault-step-item.done { opacity: 0.45; text-decoration: line-through; }
.fault-step-check { width: 16px; height: 16px; min-width: 16px; border: 1.5px solid var(--border-color); border-radius: 4px; display: flex; align-items: center; justify-content: center; font-size: 9px; color: transparent; transition: all 0.2s; margin-top: 1px; }
.fault-step-item.done .fault-step-check { background: #22c55e; border-color: #22c55e; color: #fff; }
.fault-tools { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 12px; }
.fault-tool-tag { padding: 3px 9px; background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 12px; font-size: 0.71rem; color: var(--text-main); }
.fault-safety-note { background: rgba(6, 182, 212,0.07); border: 1px solid rgba(6, 182, 212,0.3); border-radius: 8px; padding: 8px 10px; font-size: 0.74rem; color: var(--text-main); line-height: 1.55; }
@media (max-width: 860px) { .fault-sim-body { grid-template-columns: 1fr; } }

/* Jump button & pulse highlight */
.fault-jump-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    margin-top: 14px;
    padding: 9px 16px;
    background: var(--primary);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 2px 8px rgba(37,99,235,0.25);
}

.fault-jump-btn:hover {
    background: #1d4ed8;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37,99,235,0.4);
}

.accordion-item.highlight-pulse {
    animation: accordionHighlight 1.8s ease-in-out;
}

@keyframes accordionHighlight {
    0%   { box-shadow: 0 0 0 0 rgba(239,68,68,0); }
    30%  { box-shadow: 0 0 0 4px rgba(239,68,68,0.5); border-color: #ef4444; }
    70%  { box-shadow: 0 0 0 4px rgba(239,68,68,0.5); border-color: #ef4444; }
    100% { box-shadow: 0 0 0 0 rgba(239,68,68,0); }
}

/* Circuit Isolation Dimming for Fault Simulator */
.diag-node { transition: opacity 0.35s ease, filter 0.35s ease; }
.diag-wire { transition: opacity 0.35s ease; }

.diag-node.diag-dimmed {
    opacity: 0.18 !important;
    filter: grayscale(100%) !important;
}

.diag-wire.diag-dimmed {
    opacity: 0.08 !important;
}

/* ═══════════════════════════════════════════════════════════════
   SECTION 3: SAFETY INSTRUCTIONS — OEM IETM STYLES
   ═══════════════════════════════════════════════════════════════ */

.safety-block { margin: 20px 0; }
.safety-block-title { font-size: 0.95rem; font-weight: 700; color: var(--text-main); margin-bottom: 12px; }

/* PPE Grid */
.ppe-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
}

.ppe-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.02);
}

.ppe-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ppe-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--primary);
    stroke-width: 2;
    flex-shrink: 0;
}

.ppe-info { display: flex; flex-direction: column; }
.ppe-name { font-size: 0.83rem; font-weight: 700; color: var(--text-main); }
.ppe-spec { font-size: 0.72rem; color: var(--text-muted); margin-top: 2px; }

/* Hazard Cards Stack */
.hazard-cards-stack {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.hazard-card {
    border-radius: 12px;
    padding: 18px 20px;
    border-left: 5px solid transparent;
    display: flex;
    flex-direction: column;
}

.hazard-hdr {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}

.hazard-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    color: #ffffff;
}

.hazard-badge svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.danger-badge  { background: #dc2626; }
.warning-badge { background: #ea580c; }
.caution-badge { background: #d97706; }

.hazard-sub { font-size: 0.82rem; font-weight: 600; color: var(--text-main); }
.hazard-desc { font-size: 0.82rem; line-height: 1.6; color: var(--text-main); margin-bottom: 10px; }

.hazard-list {
    margin: 0 0 0 18px;
    padding: 0;
    font-size: 0.8rem;
    line-height: 1.65;
    color: var(--text-main);
}
.hazard-list li { margin-bottom: 4px; }

/* Hazard Card Themes */
.hazard-danger {
    background: rgba(220, 38, 38, 0.05);
    border: 1px solid rgba(220, 38, 38, 0.2);
    border-left: 5px solid #dc2626;
}

.hazard-warning {
    background: rgba(234, 88, 12, 0.05);
    border: 1px solid rgba(234, 88, 12, 0.2);
    border-left: 5px solid #ea580c;
}

.hazard-caution {
    background: rgba(217, 119, 6, 0.05);
    border: 1px solid rgba(217, 119, 6, 0.2);
    border-left: 5px solid #d97706;
}

/* HV Battery Isolation Protocol Card */
.hv-isolation-card {
    margin-bottom: 24px;
    padding: 20px;
}

.iso-hdr-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 16px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.iso-hdr-title svg {
    width: 18px;
    height: 18px;
    stroke: var(--primary);
    stroke-width: 2;
    fill: none;
    flex-shrink: 0;
}

.isolation-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 12px;
}

.iso-step {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 14px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    position: relative;
}

.iso-num {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 8px;
}

.iso-content { display: flex; flex-direction: column; gap: 3px; }
.iso-content strong { font-size: 0.8rem; color: var(--text-main); }
.iso-content span { font-size: 0.74rem; color: var(--text-muted); line-height: 1.45; }

.pre-service-checklist h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 4px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.pre-service-checklist h4 svg {
    width: 18px;
    height: 18px;
    stroke: var(--primary);
    stroke-width: 2;
    flex-shrink: 0;
}

.pre-service-sub { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 14px; }

.safety-ack-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.safety-ack-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.8rem;
    color: var(--text-main);
    cursor: pointer;
    user-select: none;
    transition: all 0.2s;
}

.safety-ack-item:hover { border-color: var(--primary); }

.ack-check {
    width: 18px;
    height: 18px;
    min-width: 18px;
    border: 1.5px solid var(--border-color);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    color: transparent;
    transition: all 0.2s;
}

.safety-ack-item.done {
    background: rgba(34, 197, 94, 0.08);
    border-color: rgba(34, 197, 94, 0.4);
}

.safety-ack-item.done .ack-check {
    background: #22c55e;
    border-color: #22c55e;
    color: #ffffff;
}


/* ═══════════════════════════════════════════════════════════════
   FRONT COVER / LANDING PORTAL STYLES
   ═══════════════════════════════════════════════════════════════ */

.welcome-cover {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 99999;
    background: radial-gradient(circle at 80% 20%, rgba(245, 130, 32, 0.12) 0%, transparent 50%),
                radial-gradient(circle at 20% 80%, rgba(245, 130, 32, 0.05) 0%, transparent 50%),
                #0f172a;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    overflow-y: auto;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.5s ease;
}

.welcome-cover.cover-dismissed {
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
}

.cover-glass-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 24px;
    padding: 40px;
    max-width: 860px;
    width: 100%;
    color: #1e293b;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.55);
    display: flex;
    flex-direction: column;
    gap: 28px;
    margin: auto;
}

/* Badge Row */
.cover-badge-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.cover-badge {
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.cover-badge.oem {
    background: rgba(245, 130, 32, 0.2);
    color: #f58220;
    border: 1px solid rgba(245, 130, 32, 0.4);
}

.cover-badge.ietm {
    background: rgba(15, 23, 42, 0.06);
    color: #475569;
    border: 1px solid rgba(15, 23, 42, 0.12);
}

/* Hero Title */
.cover-hero-title h1 {
    font-size: 2.5rem;
    font-weight: 900;
    letter-spacing: -0.02em;
    color: #0f172a;
    margin-bottom: 4px;
}

.cover-hero-title h1 span {
    color: #f58220;
}

.cover-hero-title h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: #475569;
    margin-bottom: 8px;
}

.cover-subtitle {
    font-size: 0.88rem;
    color: #475569;
    line-height: 1.6;
}

/* Specs Strip */
.cover-specs-strip {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
    background: rgba(15, 23, 42, 0.04);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 16px;
    padding: 16px;
}

.spec-pill {
    display: flex;
    align-items: center;
    gap: 10px;
}

.spec-pill-icon { font-size: 1.5rem; }
.spec-pill div { display: flex; flex-direction: column; }
.spec-pill strong { font-size: 0.85rem; color: #0f172a; }
.spec-pill span { font-size: 0.72rem; color: #64748b; }

/* Quick Action Cards Grid */
.cover-actions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 14px;
}

.cover-action-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 14px;
    color: #1e293b;
    cursor: default;
    text-align: left;
    transition: all 0.25s ease;
}

.cover-act-icon-svg {
    width: 26px;
    height: 26px;
    stroke: #f58220;
    flex-shrink: 0;
    transition: transform 0.25s ease;
}
.cover-act-text { display: flex; flex-direction: column; }
.cover-act-text strong { font-size: 0.85rem; color: #0f172a; }
.cover-act-text span { font-size: 0.72rem; color: #64748b; }

/* Main Enter CTA Button */
.cover-cta-row {
    display: flex;
    justify-content: center;
}

.cover-enter-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 14px 36px;
    background: linear-gradient(135deg, #f58220 0%, #e06b10 100%);
    color: #ffffff;
    border: none;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 8px 25px rgba(245, 130, 32, 0.4);
    transition: all 0.25s ease;
}

.cta-rocket-svg {
    width: 20px;
    height: 20px;
    stroke: #ffffff;
    stroke-width: 2.2;
    flex-shrink: 0;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.cover-enter-btn:hover .cta-rocket-svg {
    transform: translate(4px, -4px) rotate(15deg);
}

.cover-enter-btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 30px rgba(245, 130, 32, 0.5);
}

/* Footer Credit */
.cover-footer-credit {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.82rem;
    color: #64748b;
    border-top: 1px solid rgba(15, 23, 42, 0.08);
    padding-top: 24px;
    padding-bottom: 8px;
}

.credit-brand strong { color: #f58220; }

@media (max-width: 640px) {
    .cover-glass-card { padding: 24px; gap: 20px; }
    .cover-hero-title h1 { font-size: 1.8rem; }
    .cover-footer-credit { flex-direction: column; gap: 6px; text-align: center; }
}


/* Aspirella Purple Brand Identity & Script Logo Font */
.aspirella-brand {
    font-family: 'Caveat', 'Pacifico', cursive, sans-serif !important;
    color: #8250be !important;
    font-size: 1.35rem !important;
    font-weight: 700 !important;
    letter-spacing: 0.03em;
    text-shadow: 0 0 12px rgba(130, 80, 190, 0.35);
    display: inline-block;
    vertical-align: middle;
    line-height: 1;
}

.cover-footer-credit .credit-brand strong.aspirella-brand {
    color: #b892ff !important;
    font-size: 1.45rem !important;
    text-shadow: 0 0 15px rgba(184, 146, 255, 0.6);
}

/* Aspirella Official SVG Logo Graphic Styling */
.aspirella-logo-img {
    height: 24px;
    width: auto;
    vertical-align: middle;
    display: inline-block;
    margin-left: 6px;
    filter: drop-shadow(0 0 6px rgba(122, 84, 158, 0.4));
    transition: transform 0.25s ease, filter 0.25s ease;
}

.cover-footer-credit .aspirella-logo-img {
    height: 28px;
    filter: drop-shadow(0 0 10px rgba(184, 146, 255, 0.8)) brightness(1.25);
}

[data-theme="dark"] .aspirella-logo-img {
    filter: drop-shadow(0 0 10px rgba(184, 146, 255, 0.8)) brightness(1.35);
}

.aspirella-logo-img:hover {
    transform: scale(1.08);
}

/* Dynamic Feature Showcase Box ON Cover Page */
.cover-action-card.active {
    background: rgba(245, 130, 32, 0.2) !important;
    border-color: #f58220 !important;
    box-shadow: 0 0 16px rgba(245, 130, 32, 0.3);
}

.cover-feature-box {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(245, 130, 32, 0.3);
    border-radius: 16px;
    padding: 18px 22px;
    margin-bottom: 8px;
    transition: all 0.3s ease;
}

.feat-box-hdr {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.feat-box-icon { font-size: 1.6rem; }
.feat-box-title { display: block; font-size: 0.95rem; color: #ffffff; font-weight: 700; }
.feat-box-sub   { display: block; font-size: 0.76rem; color: #f58220; font-weight: 500; }
.feat-box-desc  { font-size: 0.83rem; line-height: 1.6; color: #cbd5e1; margin: 0; }

/* Static Cover Feature Highlights Pills */
.cover-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 14px;
}

.cover-feature-pill {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    color: #f8fafc;
    pointer-events: none;
}

.cover-feat-icon { font-size: 1.5rem; }
.cover-feat-text { display: flex; flex-direction: column; }
.cover-feat-text strong { font-size: 0.85rem; color: #ffffff; }
.cover-feat-text span { font-size: 0.72rem; color: #94a3b8; }

/* Hazard Cards Interactive Widgets */
.hazard-body {
    display: flex;
    flex-direction: column;
    gap: 16px;
    height: 100%;
    flex-grow: 1;
}

.hazard-content-wrap {
    flex: 1 1 auto;
}

.hazard-widget-wrap {
    width: 100%;
    max-width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--widget-bg);
    border: 1px solid var(--widget-border);
    border-radius: 12px;
    padding: 16px;
    margin-top: auto;
}

/* Discharge Timer Widget */
.discharge-timer-widget,
.prep-checklist-widget,
.temp-validator-widget {
    width: 100%;
    display: flex;
    flex-direction: column;
}

.timer-display-row {
    display: flex;
    align-items: center;
    gap: 16px;
    width: 100%;
}

.timer-circle-container {
    position: relative;
    width: 68px;
    height: 68px;
    flex-shrink: 0;
}

.timer-svg {
    width: 68px;
    height: 68px;
    transform: rotate(-90deg);
}

.timer-bg-circle {
    stroke: var(--timer-bg);
    fill: none;
    stroke-width: 5;
}

.timer-progress-circle {
    stroke: #dc2626;
    fill: none;
    stroke-width: 5;
    stroke-linecap: round;
    stroke-dasharray: 213.63;
    stroke-dashoffset: 0;
    transition: stroke-dashoffset 0.25s linear, stroke 0.3s ease;
}

.timer-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-weight: 800;
    font-size: 0.95rem;
    color: var(--timer-text-color);
    font-family: 'Inter', sans-serif;
}

.timer-controls {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
}

.timer-btn {
    padding: 8px 12px;
    border-radius: 6px;
    border: none;
    font-size: 0.76rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
    width: 100%;
}

.timer-btn.primary {
    background: #dc2626;
    color: #ffffff;
}

.timer-btn.primary:hover:not(:disabled) {
    background: #b91c1c;
}

.timer-btn.secondary {
    background: var(--widget-bg);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.timer-btn.secondary:hover:not(:disabled) {
    background: var(--timer-bg);
    color: var(--text-main);
}

.timer-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.timer-status-msg {
    margin-top: 12px;
    font-size: 0.72rem;
    line-height: 1.4;
    border-radius: 6px;
    padding: 6px 10px;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
}

.timer-status-msg.waiting {
    background: var(--alert-warn-bg);
    color: var(--alert-warn-text);
    border: 1px solid var(--border-color);
}

.timer-status-msg.active {
    background: var(--alert-info-bg);
    color: var(--alert-info-text);
    border: 1px solid var(--border-color);
    animation: timerPulseBorder 1.5s infinite alternate;
}

.timer-status-msg.success {
    background: var(--alert-success-bg);
    color: var(--alert-success-text);
    border: 1px solid var(--border-color);
}

.timer-status-msg.danger {
    background: var(--alert-err-bg);
    color: var(--alert-err-text);
    border: 1px solid var(--border-color);
}

/* Warnings / Prep Checklist */
.prep-checklist {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
}

.prep-check-item {
    display: flex;
    align-items: center;
}

.checkbox-container {
    display: flex;
    align-items: center;
    position: relative;
    padding-left: 26px;
    cursor: pointer;
    font-size: 0.78rem;
    font-weight: 500;
    user-select: none;
    color: var(--chk-label-color);
    transition: color 0.2s ease;
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    left: 0;
    height: 16px;
    width: 16px;
    background-color: var(--widget-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    transition: all 0.2s ease;
}

.checkbox-container:hover input ~ .checkmark {
    background-color: var(--timer-bg);
    border-color: #ea580c;
}

.checkbox-container input:checked ~ .checkmark {
    background-color: #ea580c;
    border-color: #ea580c;
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.checkbox-container input:checked ~ .checkmark:after {
    display: block;
}

.checkbox-container .checkmark:after {
    left: 5px;
    top: 2px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.checkbox-container input:checked ~ .chk-label {
    color: var(--chk-label-checked);
    opacity: 0.85;
}

/* Caution / Temperature Checker */
.temp-input-row {
    display: flex;
    gap: 12px;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.temp-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--widget-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 6px 12px;
    max-width: 110px;
    flex-grow: 1;
}

.temp-input-wrap input {
    width: 100%;
    border: none;
    background: transparent;
    color: var(--text-main);
    font-size: 0.9rem;
    font-weight: 700;
    outline: none;
    text-align: left;
}

.temp-input-wrap input::-webkit-outer-spin-button,
.temp-input-wrap input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.temp-input-wrap input[type=number] {
    -moz-appearance: textfield;
    appearance: textfield; /* Standard property for cross-browser compatibility */
}

.temp-unit {
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 700;
}

.temp-badge {
    padding: 5px 10px;
    border-radius: 6px;
    font-size: 0.68rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.temp-badge.unknown {
    background: var(--widget-bg);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
}

.temp-badge.safe {
    background: var(--alert-success-bg);
    color: var(--alert-success-text);
    border: 1px solid var(--border-color);
}

.temp-badge.danger {
    background: var(--alert-err-bg);
    color: var(--alert-err-text);
    border: 1px solid var(--border-color);
    animation: tempBadgePulse 1.5s infinite;
}

/* Animations */
@keyframes timerPulseBorder {
    0% { border-color: rgba(59, 130, 246, 0.2); }
    100% { border-color: rgba(59, 130, 246, 0.6); }
}

@keyframes tempBadgePulse {
    0% { opacity: 0.8; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.03); }
    100% { opacity: 0.8; transform: scale(1); }
}

/* Responsive Rules for Hazard Cards */
/* Stacks naturally on mobile due to auto-fit grid */

/* GIF Preview Hover Magnifier Overlay */
.gif-preview {
    position: relative;
    cursor: pointer;
    overflow: hidden;
}
.gif-preview::after {
    content: '🔍 Click to Expand';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.5);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 600;
    opacity: 0;
    transition: opacity 0.25s ease;
    backdrop-filter: blur(2px);
    border-radius: 10px;
}
.gif-preview:hover::after {
    opacity: 1;
}

/* Replay Button on GIF cards */
.gif-replay-btn {
    position: absolute;
    bottom: 10px;
    right: 10px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: rgba(245, 130, 32, 0.92);
    color: #ffffff;
    border: none;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 3px 10px rgba(245, 130, 32, 0.4);
    transition: all 0.2s ease;
    z-index: 5;
    backdrop-filter: blur(4px);
    letter-spacing: 0.03em;
}
.gif-replay-btn svg {
    width: 13px;
    height: 13px;
    stroke: #ffffff;
    flex-shrink: 0;
}
.gif-replay-btn:hover {
    background: #e06b10;
    transform: scale(1.06);
    box-shadow: 0 5px 16px rgba(245, 130, 32, 0.55);
}

/* Replay Button inside Lightbox fullscreen */
.lightbox-replay-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 18px;
    padding: 10px 24px;
    background: rgba(245, 130, 32, 0.9);
    color: #ffffff;
    border: none;
    border-radius: 24px;
    font-size: 0.88rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(245, 130, 32, 0.45);
    transition: all 0.2s ease;
    letter-spacing: 0.03em;
}
.lightbox-replay-btn svg {
    width: 16px;
    height: 16px;
    stroke: #ffffff;
    flex-shrink: 0;
}
.lightbox-replay-btn:hover {
    background: #e06b10;
    transform: translateY(-2px) scale(1.04);
    box-shadow: 0 8px 20px rgba(245, 130, 32, 0.55);
}

/* Lightbox Modal overlay for Fullscreen mode */
.lightbox-overlay {
    display: none;
    position: fixed;
    z-index: 99999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: rgba(15, 23, 42, 0.92);
    backdrop-filter: blur(10px);
    align-items: center;
    justify-content: center;
    flex-direction: column;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.lightbox-overlay.active {
    display: flex;
    opacity: 1;
}
.lightbox-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 80%;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    transform: scale(0.95);
    transition: transform 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}
.lightbox-overlay.active .lightbox-content {
    transform: scale(1);
}
.lightbox-close {
    position: absolute;
    top: 30px;
    right: 35px;
    color: #f1f5f9;
    font-size: 32px;
    font-weight: bold;
    transition: all 0.2s ease;
    cursor: pointer;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.08);
    border-radius: 50%;
}
.lightbox-close:hover {
    color: var(--primary);
    background: rgba(255,255,255,0.2);
    transform: scale(1.05);
}
.lightbox-caption {
    margin-top: 15px;
    text-align: center;
    color: #94a3b8;
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 0.02em;
}

/* ─── Premium Dark Theme Simulator Overrides ─── */
[data-theme="dark"] .sim-content {
    background-color: #0b0f19 !important;
    background-image: radial-gradient(rgba(245, 130, 32, 0.05) 1px, transparent 1px) !important;
    background-size: 20px 20px !important;
    border-radius: 14px;
    padding: 24px;
    border: 1px solid rgba(255, 255, 255, 0.04);
}

[data-theme="dark"] .sim-input-box,
[data-theme="dark"] .sim-iot-card,
[data-theme="dark"] .sim-mcu,
[data-theme="dark"] .sim-display-card {
    background-color: rgba(15, 23, 42, 0.65) !important;
    border-color: rgba(255, 255, 255, 0.08) !important;
    backdrop-filter: blur(8px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .sim-input-box.active,
[data-theme="dark"] .sim-display-card.active {
    border-color: #f58220 !important;
    box-shadow: 0 0 16px rgba(245, 130, 32, 0.25) !important;
}

[data-theme="dark"] .sim-input-box.active-brake {
    border-color: #3b82f6 !important;
    box-shadow: 0 0 16px rgba(59, 130, 246, 0.25) !important;
}

[data-theme="dark"] .sim-input-box.error {
    border-color: #ef4444 !important;
    box-shadow: 0 0 16px rgba(239, 68, 68, 0.25) !important;
}

[data-theme="dark"] .sim-mcu.active {
    border-color: #f58220 !important;
    box-shadow: 0 0 20px rgba(245, 130, 32, 0.22) !important;
}

[data-theme="dark"] #simSvgGlobal path[stroke="var(--border-color)"] {
    stroke: rgba(255, 255, 255, 0.15) !important;
}

[data-theme="dark"] #simSvgGlobal polygon[fill="var(--border-color)"] {
    fill: rgba(255, 255, 255, 0.15) !important;
}

[data-theme="dark"] .tft-screen {
    background: #090d16 !important;
    border-color: rgba(255, 255, 255, 0.08) !important;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .tele-item {
    background-color: rgba(15, 23, 42, 0.45) !important;
    border-color: rgba(255, 255, 255, 0.06) !important;
}