/* ==========================================================================
   GPSPL TURNKEY SMART CLASSROOM SOLUTIONS SUITE
   - Aesthetic: Warm Alabaster Paper (#faf8f5), Carbon Ink (#161817), Warm Terracotta (#d96538)
   - Institutional Spectrum: Small Coaching / Tuition Centers to Central Universities & Amphitheatres
   - Full Signal Chain Visualizer, Multi-Classroom Budget Sizer & Tier Matrices
   ========================================================================== */

:root {
    --sc-paper: #faf8f5;
    --sc-paper-card: #ffffff;
    --sc-paper-warm: #f3efe9;
    --sc-paper-tint: #eae5dc;
    --sc-line: #e3ded6;
    --sc-line-soft: #ede8e1;
    --sc-ink: #161817;
    --sc-text: #191b1a;
    --sc-muted: #5e6460;
    --sc-muted-light: #8e9490;
    
    --sc-accent: #d96538;
    --sc-accent-hover: #c25327;
    --sc-accent-subtle: #fbf0eb;
    --sc-accent-border: #f0c9ba;

    --sc-emerald: #10b981;
    --sc-emerald-subtle: #ecfdf5;

    --sc-console-bg: #141716;
    --sc-console-card: #1c201e;
    --sc-console-border: #2e3531;
    --sc-console-text: #f4f6f5;

    --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-italic: 'Playfair Display', Georgia, serif;
    --font-mono: 'Space Grotesk', monospace;
    --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
}

body.smart-class-page {
    background-color: var(--sc-paper) !important;
    color: var(--sc-text) !important;
    font-family: var(--font-body) !important;
    line-height: 1.65;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

body.smart-class-page * {
    box-sizing: border-box;
}

body.smart-class-page em,
body.smart-class-page .sc-italic {
    font-family: var(--font-italic) !important;
    font-style: italic !important;
    font-weight: 500 !important;
    color: var(--sc-accent) !important;
}

.sc-container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ==========================================================================
   HERO & LIVE CLASSROOM SIGNAL CHAIN VISUALIZER
   ========================================================================== */
.sc-hero {
    position: relative;
    padding: clamp(60px, 8vw, 100px) 0 clamp(48px, 6vw, 80px);
    background: radial-gradient(ellipse 90% 60% at 50% -10%, #fff7f2 0%, var(--sc-paper) 100%);
    border-bottom: 1px solid var(--sc-line);
    overflow: hidden;
}

.sc-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(340px, 0.95fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: center;
}

.sc-kicker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--sc-accent-subtle);
    border: 1px solid var(--sc-accent-border);
    color: var(--sc-accent);
    padding: 7px 16px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.sc-kicker-beacon {
    width: 8px;
    height: 8px;
    background: var(--sc-accent);
    border-radius: 50%;
    animation: scBeaconPulse 2s infinite;
}

@keyframes scBeaconPulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(217, 101, 56, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(217, 101, 56, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(217, 101, 56, 0); }
}

.sc-hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(2.3rem, 4.5vw, 3.8rem);
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -0.03em;
    color: var(--sc-ink);
    margin: 0 0 22px;
}

.sc-hero-sub {
    font-size: clamp(1.02rem, 1.25vw, 1.18rem);
    color: var(--sc-muted);
    line-height: 1.7;
    margin: 0 0 32px;
    max-width: 620px;
}

.sc-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 36px;
}

.sc-btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--sc-accent);
    color: #ffffff !important;
    padding: 14px 28px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.25s ease;
    box-shadow: 0 6px 20px rgba(217, 101, 56, 0.28);
}

.sc-btn-primary:hover {
    background: var(--sc-accent-hover);
    transform: translateY(-2px);
}

.sc-btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--sc-paper-card);
    color: var(--sc-ink) !important;
    border: 1px solid var(--sc-line);
    padding: 14px 24px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.2s ease;
}

.sc-btn-secondary:hover {
    background: var(--sc-paper-warm);
    border-color: var(--sc-accent-border);
}

.sc-trust-badges {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 20px;
    padding-top: 24px;
    border-top: 1px solid var(--sc-line-soft);
}

.sc-trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.84rem;
    font-weight: 700;
    color: var(--sc-text);
}

.sc-trust-item i {
    color: var(--sc-emerald);
}

/* Signal Chain Flow Visualizer (Dark Command Console) */
.sc-signal-console {
    background: var(--sc-console-bg);
    border: 1px solid var(--sc-console-border);
    border-radius: 20px;
    padding: 28px;
    color: var(--sc-console-text);
    box-shadow: 0 24px 50px rgba(0, 0, 0, 0.25);
}

.sc-signal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--sc-console-border);
    padding-bottom: 16px;
    margin-bottom: 20px;
}

.sc-signal-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--sc-emerald);
}

.sc-signal-status-dot {
    width: 7px;
    height: 7px;
    background: var(--sc-emerald);
    border-radius: 50%;
}

.sc-signal-node-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.sc-signal-node {
    background: var(--sc-console-card);
    border: 1px solid var(--sc-console-border);
    border-radius: 12px;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.sc-signal-node.active,
.sc-signal-node:hover {
    border-color: var(--sc-accent);
    background: rgba(217, 101, 56, 0.12);
}

.sc-node-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.08);
    display: grid;
    place-items: center;
    color: var(--sc-accent);
    font-size: 1rem;
    flex-shrink: 0;
}

.sc-node-info h4 {
    font-family: var(--font-heading);
    font-size: 0.92rem;
    font-weight: 700;
    color: #ffffff;
    margin: 0 0 2px;
}

.sc-node-info p {
    font-size: 0.74rem;
    color: #94a3b8;
    margin: 0;
}

.sc-signal-inspector {
    background: rgba(0, 0, 0, 0.3);
    border: 1px dashed var(--sc-console-border);
    border-radius: 12px;
    padding: 14px 16px;
    font-size: 0.82rem;
    color: #e2e8f0;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.sc-signal-inspector i {
    color: var(--sc-accent);
    margin-top: 2px;
}

/* ==========================================================================
   3-TIER INSTITUTIONAL ARCHITECTURE (Coaching to University)
   ========================================================================== */
.sc-tiers-section {
    padding: clamp(60px, 7vw, 90px) 0;
    background: var(--sc-paper);
}

.sc-section-header {
    text-align: center;
    max-width: 820px;
    margin: 0 auto clamp(36px, 5vw, 54px);
}

.sc-section-header .section-eyebrow {
    color: var(--sc-accent);
    font-weight: 800;
    font-size: 0.78rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.sc-section-header h2 {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 3.2vw, 2.7rem);
    font-weight: 800;
    line-height: 1.2;
    color: var(--sc-ink);
    margin: 0 0 14px;
}

.sc-section-header p {
    color: var(--sc-muted);
    font-size: 1rem;
    line-height: 1.65;
    margin: 0;
}

.sc-tiers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(330px, 1fr));
    gap: 28px;
    align-items: stretch;
}

.sc-tier-card {
    background: var(--sc-paper-card);
    border: 1px solid var(--sc-line);
    border-radius: 20px;
    padding: 34px 28px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    display: flex;
    flex-direction: column;
    position: relative;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.sc-tier-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.08);
}

.sc-tier-card.featured-school {
    border-top: 5px solid var(--sc-accent);
    box-shadow: 0 8px 30px rgba(217, 101, 56, 0.12);
}

.sc-tier-badge-pill {
    position: absolute;
    top: -12px;
    left: 28px;
    background: var(--sc-accent);
    color: #ffffff;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 4px 14px;
    border-radius: 999px;
}

.sc-tier-head {
    margin-bottom: 20px;
}

.sc-tier-scope-tag {
    font-size: 0.74rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--sc-muted);
}

.sc-tier-title {
    font-family: var(--font-heading);
    font-size: 1.45rem;
    font-weight: 800;
    color: var(--sc-ink);
    margin: 4px 0 8px;
}

.sc-tier-price {
    font-family: var(--font-mono);
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--sc-accent);
}

.sc-tier-capacity {
    font-size: 0.8rem;
    color: var(--sc-muted-light);
    display: block;
    margin-top: 2px;
}

.sc-tier-hardware {
    list-style: none;
    padding: 0;
    margin: 0 0 24px 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-size: 0.88rem;
    color: var(--sc-text);
}

.sc-tier-hardware li {
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.sc-tier-hardware li i {
    color: var(--sc-emerald);
    font-size: 1rem;
    margin-top: 2px;
    flex-shrink: 0;
}

.sc-tier-card-cta {
    margin-top: auto;
    padding-top: 20px;
    border-top: 1px solid var(--sc-line-soft);
}

/* ==========================================================================
   TURNKEY MULTI-CLASSROOM BUDGET CALCULATOR
   ========================================================================== */
.sc-calculator-section {
    padding: clamp(60px, 7vw, 90px) 0;
    background: var(--sc-paper-warm);
    border-top: 1px solid var(--sc-line);
    border-bottom: 1px solid var(--sc-line);
}

.sc-calculator-card {
    background: var(--sc-paper-card);
    border: 1px solid var(--sc-line);
    border-radius: 20px;
    padding: clamp(28px, 4vw, 44px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.05);
}

.sc-calculator-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.9fr);
    gap: clamp(32px, 4vw, 50px);
    align-items: center;
}

.sc-control-block {
    margin-bottom: 24px;
}

.sc-control-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.sc-control-name {
    font-weight: 700;
    font-size: 0.92rem;
    color: var(--sc-ink);
}

.sc-control-val {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--sc-accent);
}

.sc-slider {
    width: 100%;
    height: 7px;
    border-radius: 5px;
    background: var(--sc-line);
    outline: none;
    -webkit-appearance: none;
}

.sc-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--sc-accent);
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(217, 101, 56, 0.4);
    transition: transform 0.15s ease;
}

.sc-slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

/* Tier Selection Chips */
.sc-tier-select-chips {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-top: 10px;
}

.sc-chip {
    border: 1px solid var(--sc-line);
    background: var(--sc-paper-warm);
    border-radius: 10px;
    padding: 12px 10px;
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--sc-text);
    text-align: center;
    transition: all 0.2s ease;
}

.sc-chip.selected {
    background: var(--sc-accent-subtle);
    border-color: var(--sc-accent);
    color: var(--sc-accent);
}

/* Addon Toggles */
.sc-toggle-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 10px;
}

.sc-toggle-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--sc-paper-warm);
    border: 1px solid var(--sc-line);
    border-radius: 10px;
    padding: 10px 16px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--sc-text);
}

.sc-toggle-label input {
    accent-color: var(--sc-accent);
    width: 18px;
    height: 18px;
}

/* Calculation Monitor Console */
.sc-calc-console {
    background: var(--sc-console-bg);
    border: 1px solid var(--sc-console-border);
    border-radius: 16px;
    padding: 28px;
    color: #ffffff;
}

.sc-calc-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.74rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--sc-emerald);
    margin-bottom: 12px;
}

.sc-calc-title {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 800;
    color: #ffffff;
    margin: 0 0 6px;
}

.sc-calc-desc {
    font-size: 0.86rem;
    color: #94a3b8;
    margin-bottom: 20px;
}

.sc-calc-metrics {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 24px;
    border-top: 1px solid var(--sc-console-border);
    padding-top: 16px;
}

.sc-metric-line {
    display: flex;
    justify-content: space-between;
    font-size: 0.84rem;
}

.sc-metric-line span:first-child { color: #94a3b8; }
.sc-metric-line span:last-child {
    font-family: var(--font-mono);
    font-weight: 700;
    color: #ffffff;
}

.sc-calc-total-box {
    background: rgba(217, 101, 56, 0.15);
    border: 1px solid var(--sc-accent-border);
    border-radius: 12px;
    padding: 16px 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.sc-total-val {
    font-family: var(--font-mono);
    font-size: 1.45rem;
    font-weight: 800;
    color: #ffffff;
}

/* ==========================================================================
   TURNKEY VS FRAGMENTED COMPARISON TABLE
   ========================================================================== */
.sc-compare-section {
    padding: clamp(60px, 7vw, 90px) 0;
    background: var(--sc-paper);
}

.sc-table-wrap {
    overflow-x: auto;
    background: var(--sc-paper-card);
    border: 1px solid var(--sc-line);
    border-radius: 18px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.sc-compare-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 650px;
    text-align: left;
}

.sc-compare-table th {
    padding: 18px 24px;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 800;
    border-bottom: 2px solid var(--sc-line);
}

.sc-compare-table th:first-child { width: 34%; color: var(--sc-muted); }
.sc-compare-table th:nth-child(2) { width: 33%; color: #dc2626; background: #fff5f5; }
.sc-compare-table th:nth-child(3) { width: 33%; color: var(--sc-accent); background: var(--sc-accent-subtle); }

.sc-compare-table td {
    padding: 16px 24px;
    font-size: 0.88rem;
    border-bottom: 1px solid var(--sc-line-soft);
    line-height: 1.55;
}

.sc-compare-table tr:last-child td { border-bottom: none; }
.sc-compare-table td:nth-child(2) { background: #fffbfb; color: #475569; }
.sc-compare-table td:nth-child(3) { background: #fffcfb; font-weight: 700; color: var(--sc-text); }

/* ==========================================================================
   PHOTO SHOWCASE OF REAL INDIAN INSTITUTIONS
   ========================================================================== */
.sc-gallery-section {
    padding: clamp(60px, 7vw, 90px) 0;
    background: var(--sc-paper-warm);
    border-top: 1px solid var(--sc-line);
}

.sc-gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 22px;
}

.sc-gallery-card {
    background: var(--sc-paper-card);
    border: 1px solid var(--sc-line);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.04);
}

.sc-gallery-card img {
    width: 100%;
    height: 210px;
    object-fit: cover;
    display: block;
}

.sc-gallery-card-body {
    padding: 18px;
}

.sc-gallery-tag {
    font-size: 0.72rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--sc-accent);
    margin-bottom: 4px;
    display: block;
}

.sc-gallery-card-body h4 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--sc-ink);
    margin: 0 0 6px;
}

.sc-gallery-card-body p {
    font-size: 0.84rem;
    color: var(--sc-muted);
    margin: 0;
}

/* ==========================================================================
   FAQ ACCORDION
   ========================================================================== */
.sc-faq-section {
    padding: clamp(60px, 7vw, 90px) 0;
    background: var(--sc-paper);
    border-top: 1px solid var(--sc-line);
}

.sc-faq-list {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.sc-faq-item {
    background: var(--sc-paper-card);
    border: 1px solid var(--sc-line);
    border-radius: 14px;
    overflow: hidden;
    transition: border-color 0.2s ease;
}

.sc-faq-item.active {
    border-color: var(--sc-accent-border);
}

.sc-faq-question {
    padding: 20px 24px;
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--sc-ink);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

.sc-faq-icon {
    font-size: 0.88rem;
    color: var(--sc-accent);
    transition: transform 0.25s ease;
}

.sc-faq-item.active .sc-faq-icon {
    transform: rotate(180deg);
}

.sc-faq-answer {
    padding: 0 24px 20px;
    font-size: 0.94rem;
    color: var(--sc-muted);
    line-height: 1.65;
    display: none;
}

.sc-faq-item.active .sc-faq-answer {
    display: block;
}

@media (max-width: 900px) {
    .sc-hero-grid,
    .sc-calculator-grid {
        grid-template-columns: 1fr;
    }
    .sc-tier-select-chips {
        grid-template-columns: 1fr;
    }
}