/* ==========================================================================
   EDEXCEL COLLEGE — PROMOTIONAL LANDING PAGE STYLES (CLASS 2027)
   Theme: Premium Modern Education UI (2026 Design Standard)
   Palette: Deep Royal Navy, Platinum Slate, Gold Accent, WhatsApp Emerald
   ========================================================================== */

:root {
    --cls-navy-950: #050b14;
    --cls-navy-900: #071224;
    --cls-navy-850: #0b1a33;
    --cls-navy-800: #0f2448;
    --cls-navy-700: #17386d;
    --cls-navy-600: #1f4e96;

    --cls-gold-500: #d4af37;
    --cls-gold-400: #e2c258;
    --cls-gold-600: #b89428;
    --cls-gold-glow: rgba(212, 175, 55, 0.18);
    --cls-gold-border: rgba(212, 175, 55, 0.32);

    --cls-wa-emerald: #25D366;
    --cls-wa-dark: #128C7E;
    --cls-wa-hover: #1ebd56;

    --cls-slate-50: #f8fafc;
    --cls-slate-100: #f1f5f9;
    --cls-slate-200: #e2e8f0;
    --cls-slate-300: #cbd5e1;
    --cls-slate-400: #94a3b8;
    --cls-slate-500: #64748b;
    --cls-slate-600: #475569;
    --cls-slate-700: #334155;
    --cls-slate-800: #1e293b;
    --cls-slate-900: #0f172a;

    --cls-bg-dark: #071224;
    --cls-surface-dark: #0b1a33;
    --cls-surface-elevated: #0f2448;
    --cls-border-glass: rgba(255, 255, 255, 0.08);
    --cls-border-highlight: rgba(212, 175, 55, 0.24);

    --cls-text-light: #f8fafc;
    --cls-text-muted: #94a3b8;
    --cls-text-subtle: #64748b;

    --cls-radius-sm: 8px;
    --cls-radius-md: 14px;
    --cls-radius-lg: 20px;
    --cls-radius-xl: 28px;
    --cls-radius-pill: 9999px;

    --cls-shadow-sm: 0 4px 12px rgba(5, 11, 20, 0.18);
    --cls-shadow-md: 0 10px 28px rgba(5, 11, 20, 0.28);
    --cls-shadow-lg: 0 20px 48px rgba(5, 11, 20, 0.42);
    --cls-shadow-glow: 0 0 32px rgba(212, 175, 55, 0.15);

    --cls-font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --cls-font-body: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --cls-font-mono: 'JetBrains Mono', monospace;
}

/* --------------------------------------------------------------------------
   Reset & Base Standards
   -------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body.class-landing {
    font-family: var(--cls-font-body);
    background-color: var(--cls-bg-dark);
    color: var(--cls-text-light);
    line-height: 1.6;
    overflow-x: hidden;
    width: 100%;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Skip link for a11y */
.skip-nav-link {
    position: absolute;
    top: -100px;
    left: 1rem;
    background: var(--cls-gold-500);
    color: var(--cls-navy-950);
    font-weight: 700;
    padding: 0.75rem 1.25rem;
    border-radius: var(--cls-radius-sm);
    z-index: 9999;
    text-decoration: none;
    transition: top 0.2s ease;
}
.skip-nav-link:focus {
    top: 1rem;
}

/* Container */
.cls-container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* Typography Headings */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--cls-font-heading);
    font-weight: 700;
    line-height: 1.25;
    color: var(--cls-text-light);
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease, opacity 0.2s ease, transform 0.2s ease;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Section Header Shared */
.cls-section {
    padding: 5.5rem 0;
    position: relative;
}

.cls-section-head {
    max-width: 760px;
    margin: 0 auto 3.5rem;
}

.text-center {
    text-align: center;
}

.cls-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--cls-font-heading);
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--cls-gold-400);
    background: var(--cls-gold-glow);
    border: 1px solid var(--cls-gold-border);
    padding: 0.4rem 0.9rem;
    border-radius: var(--cls-radius-pill);
    margin-bottom: 1rem;
}

.cls-section-title {
    font-size: clamp(1.85rem, 3.8vw, 2.75rem);
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.cls-section-desc {
    font-size: clamp(1rem, 1.4vw, 1.125rem);
    color: var(--cls-slate-400);
    line-height: 1.65;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.cls-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    font-family: var(--cls-font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    padding: 0.9rem 1.65rem;
    border-radius: var(--cls-radius-pill);
    cursor: pointer;
    min-height: 48px;
    text-align: center;
    border: 1px solid transparent;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.cls-btn-primary {
    background: linear-gradient(135deg, var(--cls-gold-500) 0%, #c49a20 100%);
    color: var(--cls-navy-950);
    box-shadow: 0 4px 20px rgba(212, 175, 55, 0.35);
}
.cls-btn-primary:hover {
    background: linear-gradient(135deg, var(--cls-gold-400) 0%, var(--cls-gold-500) 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(212, 175, 55, 0.45);
}

.cls-btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    color: var(--cls-text-light);
    border: 1px solid var(--cls-border-glass);
    backdrop-filter: blur(10px);
}
.cls-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.24);
    transform: translateY(-2px);
}

.cls-btn-wa {
    background: linear-gradient(135deg, var(--cls-wa-emerald) 0%, var(--cls-wa-dark) 100%);
    color: #ffffff;
    box-shadow: 0 4px 18px rgba(37, 211, 102, 0.3);
    width: 100%;
}
.cls-btn-wa:hover {
    background: linear-gradient(135deg, var(--cls-wa-hover) 0%, var(--cls-wa-emerald) 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(37, 211, 102, 0.45);
}

.cls-btn-pulse {
    position: relative;
}
.cls-btn-pulse::after {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: inherit;
    border: 2px solid var(--cls-gold-400);
    opacity: 0.6;
    animation: btnPulse 2.4s infinite;
    pointer-events: none;
}
@keyframes btnPulse {
    0% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1.04); opacity: 0; }
    100% { transform: scale(1); opacity: 0; }
}

/* --------------------------------------------------------------------------
   1. STICKY INSTITUTIONAL HEADER
   -------------------------------------------------------------------------- */
.cls-header {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(7, 18, 36, 0.88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--cls-border-glass);
    transition: all 0.3s ease;
}

.cls-header.is-scrolled {
    background: rgba(5, 11, 20, 0.96);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.cls-header-inner {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0.85rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.cls-brand {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.cls-brand-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--cls-radius-sm);
    background: linear-gradient(135deg, var(--cls-navy-700), var(--cls-navy-900));
    border: 1px solid var(--cls-gold-border);
    color: var(--cls-gold-400);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
}

.cls-brand-text {
    display: flex;
    flex-direction: column;
}

.cls-brand-title {
    font-family: var(--cls-font-heading);
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: -0.01em;
    color: #ffffff;
    line-height: 1.1;
}

.cls-brand-sub {
    font-size: 0.72rem;
    color: var(--cls-slate-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 2px;
}

.cls-nav-menu {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.cls-nav-link {
    font-family: var(--cls-font-heading);
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--cls-slate-300);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.65rem;
    border-radius: var(--cls-radius-sm);
    transition: color 0.2s ease, background-color 0.2s ease;
}
.cls-nav-link i {
    font-size: 0.8rem;
    color: var(--cls-gold-400);
}
.cls-nav-link:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.05);
}

.cls-header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.cls-btn-portal {
    font-family: var(--cls-font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--cls-slate-300);
    padding: 0.5rem 0.95rem;
    border-radius: var(--cls-radius-pill);
    border: 1px solid var(--cls-border-glass);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}
.cls-btn-portal:hover {
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.3);
}

.cls-btn-join-nav {
    font-family: var(--cls-font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--cls-wa-emerald), var(--cls-wa-dark));
    color: #ffffff;
    padding: 0.52rem 1.1rem;
    border-radius: var(--cls-radius-pill);
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    box-shadow: 0 2px 10px rgba(37, 211, 102, 0.25);
}
.cls-btn-join-nav:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(37, 211, 102, 0.4);
}

.cls-mobile-toggle {
    display: none;
    background: transparent;
    border: 1px solid var(--cls-border-glass);
    color: var(--cls-text-light);
    width: 40px;
    height: 40px;
    border-radius: var(--cls-radius-sm);
    font-size: 1.15rem;
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

/* --------------------------------------------------------------------------
   2. HERO SECTION
   -------------------------------------------------------------------------- */
.cls-hero {
    position: relative;
    padding: 5rem 0 5.5rem;
    background:
        radial-gradient(ellipse 900px 500px at 50% -10%, rgba(31, 78, 150, 0.25) 0%, transparent 70%),
        radial-gradient(circle 400px at 80% 20%, rgba(212, 175, 55, 0.08) 0%, transparent 60%),
        var(--cls-navy-950);
    overflow: hidden;
    border-bottom: 1px solid var(--cls-border-glass);
}

.cls-hero-shell {
    max-width: 860px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
}

.cls-hero-badge-wrap {
    margin-bottom: 1.5rem;
}

.cls-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    background: rgba(15, 36, 72, 0.7);
    border: 1px solid var(--cls-border-highlight);
    padding: 0.5rem 1.25rem;
    border-radius: var(--cls-radius-pill);
    box-shadow: var(--cls-shadow-glow);
}

.cls-badge-dot {
    width: 8px;
    height: 8px;
    background: var(--cls-gold-400);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--cls-gold-400);
    animation: dotPulse 2s infinite ease-in-out;
}
@keyframes dotPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.8); }
}

.cls-badge-loc {
    font-family: var(--cls-font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--cls-gold-400);
}

.cls-hero-title {
    font-size: clamp(2.4rem, 6vw, 4.2rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: #ffffff;
    margin-bottom: 0.85rem;
    text-transform: uppercase;
}

.cls-hero-tagline {
    font-family: var(--cls-font-heading);
    font-size: clamp(1.25rem, 2.5vw, 1.85rem);
    font-weight: 600;
    color: var(--cls-gold-400);
    letter-spacing: -0.01em;
    margin-bottom: 2rem;
}

/* Teacher pill inside hero */
.cls-teacher-pill {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    background: rgba(11, 26, 51, 0.85);
    border: 1px solid var(--cls-border-highlight);
    border-radius: var(--cls-radius-pill);
    padding: 0.5rem 1.5rem 0.5rem 0.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--cls-shadow-md);
    text-align: left;
}

.cls-teacher-avatar-wrap {
    position: relative;
}

.cls-teacher-avatar {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--cls-gold-500);
    background: var(--cls-navy-800);
}

.cls-teacher-pill-info {
    display: flex;
    flex-direction: column;
}

.cls-pill-caption {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--cls-slate-400);
    line-height: 1;
}

.cls-pill-name {
    font-family: var(--cls-font-heading);
    font-size: 1.05rem;
    font-weight: 800;
    color: #ffffff;
    line-height: 1.25;
}

.cls-pill-meta {
    font-size: 0.76rem;
    color: var(--cls-gold-400);
    line-height: 1.1;
}

.cls-hero-description {
    font-size: clamp(1.05rem, 1.5vw, 1.25rem);
    color: var(--cls-slate-300);
    line-height: 1.7;
    max-width: 720px;
    margin: 0 auto 2.5rem;
}

.cls-hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3.5rem;
}

/* Trust Strip */
.cls-trust-strip {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 1.5rem 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--cls-border-glass);
}

.cls-trust-item {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--cls-font-heading);
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--cls-slate-300);
}
.cls-trust-item i {
    color: var(--cls-gold-400);
    font-size: 0.95rem;
}

/* --------------------------------------------------------------------------
   3. THREE BUNNY.NET PROMOTIONAL VIDEOS
   -------------------------------------------------------------------------- */
.cls-videos-section {
    background: var(--cls-navy-900);
    border-bottom: 1px solid var(--cls-border-glass);
}

.cls-videos-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
}

.cls-video-card {
    background: var(--cls-surface-dark);
    border: 1px solid var(--cls-border-glass);
    border-radius: var(--cls-radius-lg);
    overflow: hidden;
    box-shadow: var(--cls-shadow-md);
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}
.cls-video-card:hover {
    transform: translateY(-4px);
    border-color: var(--cls-gold-border);
    box-shadow: var(--cls-shadow-lg), var(--cls-shadow-glow);
}

.cls-video-ratio-box {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #030810;
    overflow: hidden;
}

.cls-video-iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.cls-video-placeholder {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 1.25rem;
    background:
        radial-gradient(circle at 50% 50%, rgba(31, 78, 150, 0.4) 0%, transparent 80%),
        linear-gradient(180deg, rgba(7, 18, 36, 0.4) 0%, rgba(7, 18, 36, 0.95) 100%),
        #060f1e;
    cursor: pointer;
}

.cls-vp-overlay {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    gap: 0.85rem;
}

.cls-vp-play-btn {
    width: 58px;
    height: 58px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--cls-gold-500), #aa8418);
    color: var(--cls-navy-950);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: 0 0 24px rgba(212, 175, 55, 0.4);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.cls-video-placeholder:hover .cls-vp-play-btn {
    transform: scale(1.1);
    box-shadow: 0 0 32px rgba(212, 175, 55, 0.6);
}

.cls-vp-details {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.cls-vp-badge {
    font-family: var(--cls-font-heading);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--cls-gold-400);
    letter-spacing: 0.06em;
    margin-bottom: 0.25rem;
}

.cls-vp-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #ffffff;
    line-height: 1.25;
}

.cls-vp-sub {
    font-size: 0.8rem;
    color: var(--cls-slate-400);
}

.cls-vp-config-hint {
    background: rgba(0, 0, 0, 0.55);
    border: 1px dashed rgba(212, 175, 55, 0.4);
    border-radius: var(--cls-radius-sm);
    padding: 0.35rem 0.65rem;
    text-align: center;
}
.cls-vp-config-hint code {
    font-family: var(--cls-font-mono);
    font-size: 0.72rem;
    color: var(--cls-gold-400);
}

.cls-video-caption {
    padding: 1.15rem 1.25rem;
    display: flex;
    align-items: flex-start;
    gap: 0.85rem;
    border-top: 1px solid var(--cls-border-glass);
}

.cls-video-num {
    font-family: var(--cls-font-heading);
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--cls-gold-400);
    opacity: 0.7;
    line-height: 1;
}

.cls-video-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: #ffffff;
    line-height: 1.25;
    margin-bottom: 2px;
}

.cls-video-sub {
    font-size: 0.82rem;
    color: var(--cls-slate-400);
}

/* --------------------------------------------------------------------------
   4. CLASS SCHEDULE (4 CLASS CARDS) + ONLINE BANNER
   -------------------------------------------------------------------------- */
.cls-schedule-section {
    background: var(--cls-bg-dark);
}

.cls-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.75rem;
    margin-bottom: 3rem;
}

.cls-class-card {
    background: var(--cls-surface-dark);
    border: 1px solid var(--cls-border-glass);
    border-radius: var(--cls-radius-lg);
    padding: 1.75rem 1.5rem;
    box-shadow: var(--cls-shadow-md);
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    position: relative;
}
.cls-class-card:hover {
    transform: translateY(-4px);
    border-color: rgba(37, 211, 102, 0.35);
    box-shadow: 0 16px 36px rgba(5, 11, 20, 0.4), 0 0 20px rgba(37, 211, 102, 0.12);
}

.cls-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.cls-location-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-family: var(--cls-font-heading);
    font-size: 0.82rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.35rem 0.85rem;
    border-radius: var(--cls-radius-pill);
}

.badge-kurunegala {
    background: rgba(31, 78, 150, 0.25);
    border: 1px solid rgba(77, 143, 245, 0.35);
    color: #7bb0ff;
}

.badge-kandy {
    background: rgba(212, 175, 55, 0.14);
    border: 1px solid rgba(212, 175, 55, 0.35);
    color: var(--cls-gold-400);
}

.cls-venue-tag {
    font-size: 0.76rem;
    color: var(--cls-slate-400);
}

.cls-subject-block {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding-bottom: 1.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--cls-border-glass);
}

.cls-subject-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--cls-radius-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--cls-border-glass);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    color: var(--cls-gold-400);
}

.cls-subject-meta {
    display: flex;
    flex-direction: column;
}

.cls-subject-sub {
    font-size: 0.75rem;
    color: var(--cls-slate-400);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.cls-subject-name {
    font-size: 1.25rem;
    font-weight: 800;
    color: #ffffff;
    line-height: 1.2;
}

.cls-schedule-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    background: rgba(5, 11, 20, 0.4);
    border-radius: var(--cls-radius-md);
    padding: 1rem;
    margin-bottom: 1.75rem;
}

.cls-detail-item {
    display: flex;
    flex-direction: column;
}

.cls-detail-label {
    font-size: 0.72rem;
    color: var(--cls-slate-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}
.cls-detail-label i {
    color: var(--cls-gold-400);
}

.cls-detail-value {
    font-family: var(--cls-font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    color: #ffffff;
}

.cls-time-value {
    color: var(--cls-gold-400);
}

.cls-card-action {
    margin-top: auto;
}

/* Dedicated Online Banner */
.cls-online-banner {
    background: linear-gradient(135deg, rgba(15, 36, 72, 0.8) 0%, rgba(7, 18, 36, 0.95) 100%);
    border: 1px solid var(--cls-border-highlight);
    border-radius: var(--cls-radius-xl);
    padding: 2.5rem 2.25rem;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 2.25rem;
    align-items: center;
    box-shadow: var(--cls-shadow-lg);
}

.cls-globe-icon-wrap {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(212, 175, 55, 0.12);
    border: 2px solid var(--cls-gold-border);
    color: var(--cls-gold-400);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    box-shadow: 0 0 30px rgba(212, 175, 55, 0.2);
}

.cls-online-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-family: var(--cls-font-heading);
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--cls-gold-400);
    margin-bottom: 0.5rem;
}

.cls-online-title {
    font-size: clamp(1.4rem, 2.5vw, 1.85rem);
    letter-spacing: -0.01em;
    margin-bottom: 0.5rem;
}

.cls-online-lead {
    font-size: 1.05rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.cls-online-sub {
    font-size: 0.92rem;
    color: var(--cls-slate-400);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    max-width: 840px;
}

.cls-online-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.cls-btn-online-wa {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    font-family: var(--cls-font-heading);
    font-size: 0.88rem;
    font-weight: 700;
    background: rgba(37, 211, 102, 0.12);
    border: 1px solid rgba(37, 211, 102, 0.35);
    color: var(--cls-wa-emerald);
    padding: 0.65rem 1.25rem;
    border-radius: var(--cls-radius-pill);
    transition: all 0.2s ease;
}
.cls-btn-online-wa:hover {
    background: var(--cls-wa-emerald);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(37, 211, 102, 0.35);
}

/* Format Selection Bar */
.cls-format-pills-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.85rem;
    margin-bottom: 2.5rem;
}

.cls-format-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.75rem 1.4rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--cls-border-glass);
    border-radius: var(--cls-radius-pill);
    color: var(--cls-text-light);
    font-family: var(--cls-font-heading);
    font-size: 0.92rem;
    font-weight: 700;
    transition: all 0.25s ease;
    backdrop-filter: blur(8px);
}
.cls-format-pill i {
    color: var(--cls-gold-400);
}
.cls-format-pill:hover {
    background: rgba(212, 175, 55, 0.14);
    border-color: var(--cls-gold-border);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(212, 175, 55, 0.2);
}

/* Format Blocks */
.cls-format-block {
    background: rgba(11, 26, 51, 0.6);
    border: 1px solid var(--cls-border-glass);
    border-radius: var(--cls-radius-xl);
    padding: 2.25rem 2rem;
    margin-bottom: 2.5rem;
    backdrop-filter: blur(12px);
    transition: border-color 0.3s ease;
}
.cls-format-block:hover {
    border-color: rgba(255, 255, 255, 0.14);
}

.cls-fb-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 1.25rem;
    padding-bottom: 1.5rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--cls-border-glass);
}
.cls-fb-title-wrap {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}
.cls-fb-venue {
    font-size: clamp(1.35rem, 2.5vw, 1.85rem);
    font-weight: 800;
    color: #ffffff;
    letter-spacing: -0.01em;
}
.cls-fb-desc {
    font-size: 0.92rem;
    color: var(--cls-slate-400);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.cls-fb-desc i {
    color: var(--cls-gold-400);
}
.cls-fb-day-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--cls-font-heading);
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--cls-gold-400);
    background: var(--cls-gold-glow);
    border: 1px solid var(--cls-gold-border);
    padding: 0.45rem 1rem;
    border-radius: var(--cls-radius-pill);
    white-space: nowrap;
}

.badge-online {
    background: rgba(37, 211, 102, 0.15);
    border: 1px solid rgba(37, 211, 102, 0.35);
    color: var(--cls-wa-emerald);
}

/* Helper margins */
.mt-4 { margin-top: 1rem !important; }
.mt-8 { margin-top: 2rem !important; }
.mb-6 { margin-bottom: 1.5rem !important; }

/* Registration Section & Card */
.cls-register-section {
    background: linear-gradient(180deg, var(--cls-bg-dark) 0%, #040910 100%);
    border-top: 1px solid var(--cls-border-glass);
}
.cls-register-card {
    max-width: 860px;
    margin: 0 auto;
    background: var(--cls-surface-dark);
    border: 1px solid var(--cls-border-highlight);
    border-radius: var(--cls-radius-xl);
    padding: 3.5rem 3rem;
    box-shadow: var(--cls-shadow-lg), 0 0 40px rgba(212, 175, 55, 0.08);
    position: relative;
    overflow: hidden;
}
.cls-register-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--cls-gold-500), transparent);
}
.cls-reg-header {
    margin-bottom: 2.5rem;
}
.cls-reg-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.cls-form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.35rem 1.5rem;
}
.cls-form-group {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}
.cls-fg-full {
    grid-column: span 2;
}
.cls-form-group label {
    font-family: var(--cls-font-heading);
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--cls-slate-300);
}
.cls-req {
    color: #f87171;
}
.cls-input, .cls-select {
    width: 100%;
    background: rgba(7, 18, 36, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--cls-radius-sm);
    padding: 0.85rem 1.1rem;
    font-family: var(--cls-font-body);
    font-size: 0.95rem;
    color: #ffffff;
    transition: all 0.2s ease;
    outline: none;
}
.cls-input:focus, .cls-select:focus {
    border-color: var(--cls-gold-500);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.18);
    background: rgba(7, 18, 36, 0.95);
}
.cls-select option {
    background: #0b1a33;
    color: #ffffff;
}
.cls-btn-lg {
    padding: 1.05rem 2.5rem;
    font-size: 1.02rem;
}
.cls-reg-foot {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
    margin-top: 1rem;
    text-align: center;
}
.cls-reg-note {
    font-size: 0.86rem;
    color: var(--cls-slate-400);
    line-height: 1.5;
    max-width: 680px;
}
.cls-reg-note a {
    color: var(--cls-gold-400);
    text-decoration: underline;
}
.cls-reg-note a:hover {
    color: #ffffff;
}

/* Alert Boxes */
.cls-alert {
    display: flex;
    align-items: flex-start;
    gap: 0.85rem;
    padding: 1rem 1.25rem;
    border-radius: var(--cls-radius-md);
    font-size: 0.95rem;
    line-height: 1.5;
}
.cls-alert i {
    font-size: 1.15rem;
    margin-top: 0.15rem;
    flex-shrink: 0;
}
.cls-alert-success {
    background: rgba(37, 211, 102, 0.12);
    border: 1px solid rgba(37, 211, 102, 0.35);
    color: #6ee7b7;
}
.cls-alert-danger {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.35);
    color: #fca5a5;
}

@media (max-width: 768px) {
    .cls-register-card {
        padding: 2.25rem 1.5rem;
    }
    .cls-form-grid {
        grid-template-columns: 1fr;
    }
    .cls-fg-full {
        grid-column: span 1;
    }
    .cls-format-block {
        padding: 1.5rem 1.15rem;
    }
    .cls-fb-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* --------------------------------------------------------------------------
   5. MOCK PAPER PREVIEW (PAGES 1–5)
   -------------------------------------------------------------------------- */
.cls-preview-section {
    background: var(--cls-navy-900);
    border-top: 1px solid var(--cls-border-glass);
    border-bottom: 1px solid var(--cls-border-glass);
}

.cls-viewer-shell {
    background: #030810;
    border: 1px solid var(--cls-border-glass);
    border-radius: var(--cls-radius-xl);
    box-shadow: var(--cls-shadow-lg);
    overflow: hidden;
    max-width: 960px;
    margin: 0 auto;
}

.cls-viewer-toolbar {
    background: rgba(11, 26, 51, 0.95);
    border-bottom: 1px solid var(--cls-border-glass);
    padding: 0.85rem 1.25rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.cls-toolbar-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.cls-doc-type {
    font-family: var(--cls-font-mono);
    font-size: 0.76rem;
    font-weight: 700;
    color: var(--cls-gold-400);
    background: var(--cls-gold-glow);
    padding: 0.35rem 0.75rem;
    border-radius: var(--cls-radius-sm);
    border: 1px solid var(--cls-gold-border);
}

.cls-doc-notice {
    font-size: 0.78rem;
    color: var(--cls-slate-400);
}

.cls-page-tabs {
    display: flex;
    background: rgba(5, 11, 20, 0.6);
    border: 1px solid var(--cls-border-glass);
    border-radius: var(--cls-radius-pill);
    padding: 3px;
    gap: 2px;
}

.cls-page-tab {
    background: transparent;
    border: 0;
    color: var(--cls-slate-400);
    font-family: var(--cls-font-heading);
    font-size: 0.8rem;
    font-weight: 700;
    padding: 0.4rem 0.95rem;
    border-radius: var(--cls-radius-pill);
    cursor: pointer;
    transition: all 0.2s ease;
}
.cls-page-tab:hover {
    color: #ffffff;
}
.cls-page-tab.is-active {
    background: var(--cls-gold-500);
    color: var(--cls-navy-950);
}

.cls-toolbar-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.cls-tool-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--cls-border-glass);
    color: var(--cls-slate-300);
    width: 34px;
    height: 34px;
    border-radius: var(--cls-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.82rem;
    cursor: pointer;
    transition: all 0.2s ease;
}
.cls-tool-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #ffffff;
}
.cls-tool-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.cls-page-indicator,
.cls-zoom-display {
    font-family: var(--cls-font-mono);
    font-size: 0.78rem;
    color: var(--cls-slate-300);
    padding: 0 0.35rem;
}

.cls-toolbar-sep {
    width: 1px;
    height: 18px;
    background: var(--cls-border-glass);
    margin: 0 0.25rem;
}

/* Viewport & Document Container */
.cls-viewer-viewport {
    background: #111a2e;
    padding: 2.5rem 1.5rem;
    min-height: 540px;
    display: flex;
    justify-content: center;
    overflow-x: auto;
    overflow-y: hidden;
    position: relative;
}

/* PDF.js canvas wrapper */
.cls-pdf-canvas-container {
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
    background: #ffffff;
    line-height: 0;
}
.cls-pdf-canvas {
    max-width: 100%;
    height: auto !important;
}

/* Examination Paper Styling */
.cls-mock-doc {
    width: 100%;
    max-width: 680px;
    transition: transform 0.2s ease;
    transform-origin: top center;
}

.cls-exam-page {
    background: #ffffff;
    color: #111827;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
    border-radius: 4px;
    padding: 2.25rem;
    font-family: "Times New Roman", Times, serif;
    min-height: 600px;
}

.cls-exam-border {
    border: 2px solid #000000;
    padding: 1.75rem;
    min-height: 520px;
    display: flex;
    flex-direction: column;
}

.cls-exam-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: 1rem;
    border-bottom: 2px solid #000000;
    margin-bottom: 1.25rem;
}

.cls-exam-brand {
    display: flex;
    flex-direction: column;
}
.cls-exam-brand strong {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 1.35rem;
    text-transform: uppercase;
    letter-spacing: -0.02em;
}
.cls-exam-brand span {
    font-size: 0.9rem;
    font-style: italic;
}

.cls-exam-paper-code {
    text-align: right;
    font-family: Arial, Helvetica, sans-serif;
}
.cls-exam-paper-code span {
    font-size: 0.75rem;
    display: block;
    color: #4b5563;
}
.cls-exam-paper-code strong {
    font-size: 1.15rem;
}

.cls-exam-title-box {
    margin-bottom: 1.5rem;
}
.cls-exam-level {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 1.05rem;
    font-weight: 700;
    display: block;
    margin-bottom: 0.25rem;
}
.cls-exam-spec {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 1.25rem;
    font-weight: 800;
    color: #000000;
    margin-bottom: 0.5rem;
}
.cls-exam-meta-row {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 0.82rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    color: #374151;
}

/* Candidate Box */
.cls-candidate-box {
    border: 1px solid #000000;
    padding: 0.85rem;
    margin-bottom: 1.5rem;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 0.85rem;
}
.cls-cb-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 0.85rem;
}
.cls-cb-col label {
    display: block;
    font-weight: 700;
    margin-bottom: 0.25rem;
}
.cls-cb-line {
    border-bottom: 1px dotted #000000;
    height: 18px;
}
.cls-cb-numbers {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}
.cls-box-cells {
    display: inline-flex;
    margin-left: 0.4rem;
}
.cls-box-cells span {
    width: 20px;
    height: 22px;
    border: 1px solid #000000;
    margin-right: -1px;
}

/* Instructions */
.cls-instructions-box {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 0.85rem;
    line-height: 1.5;
    margin-bottom: auto;
}
.cls-instructions-box h4 {
    color: #000000;
    font-size: 0.95rem;
    margin: 0.75rem 0 0.35rem;
    font-weight: 700;
}
.cls-instructions-box ul {
    padding-left: 1.25rem;
    margin-bottom: 0.5rem;
}
.cls-instructions-box li {
    margin-bottom: 0.3rem;
}

/* Page 2 & 3 specifics */
.cls-exam-page-header {
    display: flex;
    justify-content: space-between;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 0.8rem;
    font-weight: 700;
    border-bottom: 1px solid #000000;
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}

.cls-question-block h4 {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: #000000;
    margin-bottom: 0.75rem;
}
.cls-q-text {
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.cls-sub-question {
    margin-bottom: 1.25rem;
}
.cls-sub-question p {
    font-size: 0.92rem;
    margin-bottom: 0.5rem;
}

.cls-answer-lines {
    color: #6b7280;
    font-size: 0.85rem;
    line-height: 1.6;
}

/* Network Diagram Box */
.cls-diagram-box {
    background: #f9fafb;
    border: 1px solid #d1d5db;
    border-radius: 4px;
    padding: 1.25rem;
    margin: 1rem 0;
    font-family: Arial, Helvetica, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.cls-dia-node {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: #ffffff;
    border: 1px solid #000000;
    padding: 0.4rem 0.85rem;
    font-weight: 700;
    font-size: 0.82rem;
}

.cls-dia-line {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: #4b5563;
}

.cls-dia-branches {
    display: flex;
    gap: 0.75rem;
}
.cls-dia-client {
    font-size: 0.76rem;
    background: #ffffff;
    border: 1px solid #9ca3af;
    padding: 0.3rem 0.6rem;
    border-radius: 3px;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.cls-page-footer-note {
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid #d1d5db;
    display: flex;
    justify-content: space-between;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 0.78rem;
    color: #4b5563;
}

.cls-page-lock-note {
    background: #fef2f2;
    border: 1px solid #fecaca;
    padding: 0.75rem 1rem;
    border-radius: 4px;
    color: #991b1b;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.cls-lock-text {
    font-weight: 700;
}

.cls-viewer-foot {
    background: rgba(11, 26, 51, 0.95);
    border-top: 1px solid var(--cls-border-glass);
    padding: 0.85rem 1.25rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.cls-vf-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.82rem;
    color: var(--cls-slate-400);
}

.cls-vf-dot {
    width: 8px;
    height: 8px;
    background: var(--cls-wa-emerald);
    border-radius: 50%;
}

.cls-vf-action {
    font-family: var(--cls-font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--cls-wa-emerald);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}
.cls-vf-action:hover {
    color: #ffffff;
}

/* --------------------------------------------------------------------------
   6. TEACHER PROFILE & RECOGNISED AWARDS
   -------------------------------------------------------------------------- */
.cls-teacher-section {
    background: var(--cls-bg-dark);
}

.cls-teacher-card {
    background: var(--cls-surface-dark);
    border: 1px solid var(--cls-border-glass);
    border-radius: var(--cls-radius-xl);
    padding: 2.75rem;
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 3.5rem;
    box-shadow: var(--cls-shadow-lg);
    align-items: center;
}

.cls-tc-left {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.cls-tc-photo-shell {
    position: relative;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    padding: 6px;
    background: linear-gradient(135deg, var(--cls-gold-500) 0%, rgba(212, 175, 55, 0.2) 100%);
    box-shadow: var(--cls-shadow-glow);
    margin-bottom: 1.5rem;
}

.cls-tc-photo {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    background: var(--cls-navy-950);
}

.cls-tc-verified {
    position: absolute;
    bottom: 8px;
    right: 8px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--cls-gold-500);
    color: var(--cls-navy-950);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    border: 3px solid var(--cls-surface-dark);
}

.cls-tc-name {
    font-size: 1.5rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 0.35rem;
}

.cls-tc-role {
    font-size: 0.88rem;
    color: var(--cls-gold-400);
    font-weight: 600;
    margin-bottom: 0.2rem;
}

.cls-tc-institution {
    font-size: 0.8rem;
    color: var(--cls-slate-400);
}

.cls-awards-subtitle {
    font-family: var(--cls-font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 1.5rem;
    letter-spacing: -0.01em;
}

.cls-awards-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.75rem;
}

.cls-award-item {
    background: rgba(15, 36, 72, 0.6);
    border: 1px solid var(--cls-border-highlight);
    border-radius: var(--cls-radius-lg);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    box-shadow: var(--cls-shadow-sm);
    transition: transform 0.25s ease, border-color 0.25s ease;
}
.cls-award-item:hover {
    transform: translateY(-2px);
    border-color: var(--cls-gold-400);
}

.cls-award-icon-box {
    width: 64px;
    height: 64px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.cls-award-img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.35));
}

.cls-award-year {
    font-family: var(--cls-font-mono);
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--cls-gold-400);
    display: block;
}

.cls-award-title {
    font-size: 1.05rem;
    font-weight: 800;
    color: #ffffff;
    line-height: 1.2;
    margin: 2px 0;
}

.cls-award-org {
    font-size: 0.85rem;
    color: var(--cls-slate-300);
}

.cls-awards-note {
    font-size: 0.95rem;
    color: var(--cls-slate-400);
    line-height: 1.65;
    padding-top: 1rem;
    border-top: 1px solid var(--cls-border-glass);
}

/* --------------------------------------------------------------------------
   7. WHY MOCK PAPERS? (6 CARDS)
   -------------------------------------------------------------------------- */
.cls-why-section {
    background: var(--cls-navy-900);
    border-top: 1px solid var(--cls-border-glass);
}

.cls-why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
}

.cls-why-card {
    background: var(--cls-surface-dark);
    border: 1px solid var(--cls-border-glass);
    border-radius: var(--cls-radius-lg);
    padding: 2rem 1.75rem;
    position: relative;
    box-shadow: var(--cls-shadow-sm);
    transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.cls-why-card:hover {
    transform: translateY(-4px);
    border-color: var(--cls-gold-border);
    box-shadow: var(--cls-shadow-md), var(--cls-shadow-glow);
}

.cls-why-num {
    position: absolute;
    top: 1.5rem;
    right: 1.75rem;
    font-family: var(--cls-font-heading);
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--cls-slate-700);
    line-height: 1;
}

.cls-why-icon {
    width: 46px;
    height: 46px;
    border-radius: var(--cls-radius-md);
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid var(--cls-gold-border);
    color: var(--cls-gold-400);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
}

.cls-why-card-title {
    font-size: 1.15rem;
    font-weight: 800;
    letter-spacing: -0.01em;
    color: #ffffff;
    margin-bottom: 0.65rem;
}

.cls-why-card-text {
    font-size: 0.92rem;
    color: var(--cls-slate-400);
    line-height: 1.6;
}

/* --------------------------------------------------------------------------
   8. PARENT + STUDENT PSYCHOLOGICAL PERSPECTIVE
   -------------------------------------------------------------------------- */
.cls-perspective-section {
    background: var(--cls-bg-dark);
    border-top: 1px solid var(--cls-border-glass);
}

.cls-perspective-shell {
    max-width: 1040px;
    margin: 0 auto;
}

.cls-perspective-head {
    max-width: 820px;
    margin: 0 auto 3.5rem;
}

.cls-perspective-lead {
    font-size: 1.15rem;
    color: var(--cls-slate-300);
    line-height: 1.7;
    margin-top: 1rem;
}

.cls-perspective-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2.75rem;
}

.cls-perspective-card {
    background: var(--cls-surface-dark);
    border: 1px solid var(--cls-border-glass);
    border-radius: var(--cls-radius-xl);
    padding: 2.5rem 2rem;
    box-shadow: var(--cls-shadow-md);
    position: relative;
    display: flex;
    flex-direction: column;
}

.cls-card-parent {
    border-top: 4px solid #f43f5e;
}
.cls-card-student {
    border-top: 4px solid var(--cls-gold-500);
}

.cls-persp-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    margin-bottom: 1rem;
}
.cls-card-parent .cls-persp-icon {
    background: rgba(244, 63, 94, 0.12);
    color: #fb7185;
}
.cls-card-student .cls-persp-icon {
    background: var(--cls-gold-glow);
    color: var(--cls-gold-400);
}

.cls-persp-badge {
    font-family: var(--cls-font-heading);
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.4rem;
}
.cls-card-parent .cls-persp-badge { color: #fb7185; }
.cls-card-student .cls-persp-badge { color: var(--cls-gold-400); }

.cls-persp-title {
    font-size: 1.35rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 1.25rem;
    letter-spacing: -0.01em;
}

.cls-persp-quote {
    font-size: 1.05rem;
    font-style: italic;
    color: var(--cls-slate-200);
    line-height: 1.65;
    padding-left: 1.1rem;
    border-left: 3px solid rgba(255, 255, 255, 0.15);
    margin-bottom: 1.75rem;
}

.cls-persp-points {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    margin-top: auto;
}

.cls-persp-points li {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    font-size: 0.9rem;
    color: var(--cls-slate-300);
    line-height: 1.45;
}
.cls-persp-points li i {
    font-size: 0.8rem;
    margin-top: 3px;
    flex-shrink: 0;
}
.cls-card-parent .cls-persp-points li i { color: #fb7185; }
.cls-card-student .cls-persp-points li i { color: var(--cls-gold-400); }

/* Highlight Bar */
.cls-highlight-bar {
    background: linear-gradient(135deg, rgba(15, 36, 72, 0.9) 0%, rgba(7, 18, 36, 0.95) 100%);
    border: 1px solid var(--cls-border-highlight);
    border-radius: var(--cls-radius-lg);
    padding: 2rem 2.5rem;
    box-shadow: var(--cls-shadow-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
}

.cls-highlight-text {
    font-family: var(--cls-font-heading);
    font-size: clamp(1.2rem, 2.5vw, 1.65rem);
    font-weight: 800;
    color: #ffffff;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   9. LOCATION CARDS (KANDY, KURUNEGALA, ONLINE)
   -------------------------------------------------------------------------- */
.cls-locations-section {
    background: var(--cls-navy-900);
    border-top: 1px solid var(--cls-border-glass);
}

.cls-loc-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
}

.cls-loc-card {
    background: var(--cls-surface-dark);
    border: 1px solid var(--cls-border-glass);
    border-radius: var(--cls-radius-lg);
    padding: 2.25rem 1.75rem;
    box-shadow: var(--cls-shadow-sm);
    display: flex;
    flex-direction: column;
    position: relative;
    transition: transform 0.25s ease, border-color 0.25s ease;
}
.cls-loc-card:hover {
    transform: translateY(-4px);
    border-color: var(--cls-gold-border);
}

.cls-loc-featured {
    border-color: var(--cls-border-highlight);
    box-shadow: var(--cls-shadow-md), var(--cls-shadow-glow);
}

.cls-loc-badge-top {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--cls-gold-500);
    color: var(--cls-navy-950);
    font-family: var(--cls-font-heading);
    font-size: 0.72rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.25rem 0.85rem;
    border-radius: var(--cls-radius-pill);
    white-space: nowrap;
}

.cls-loc-icon-wrap {
    width: 52px;
    height: 52px;
    border-radius: var(--cls-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 1.25rem;
}
.cls-icon-kandy { background: rgba(212, 175, 55, 0.12); color: var(--cls-gold-400); border: 1px solid var(--cls-gold-border); }
.cls-icon-kurunegala { background: rgba(77, 143, 245, 0.12); color: #7bb0ff; border: 1px solid rgba(77, 143, 245, 0.3); }
.cls-icon-online { background: rgba(37, 211, 102, 0.12); color: var(--cls-wa-emerald); border: 1px solid rgba(37, 211, 102, 0.3); }

.cls-loc-name {
    font-size: 1.4rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 0.25rem;
}

.cls-loc-type {
    font-size: 0.82rem;
    color: var(--cls-gold-400);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.cls-loc-info {
    font-size: 0.92rem;
    color: var(--cls-slate-400);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.cls-loc-meta {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    margin-top: auto;
    padding-top: 1.25rem;
    border-top: 1px solid var(--cls-border-glass);
    font-size: 0.82rem;
    color: var(--cls-slate-300);
}
.cls-loc-meta span {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}
.cls-loc-meta i {
    color: var(--cls-gold-400);
}

.cls-loc-link {
    display: inline-block;
    font-family: var(--cls-font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--cls-gold-400);
    margin-top: 1rem;
}
.cls-loc-link:hover {
    color: #ffffff;
    transform: translateX(3px);
}

/* --------------------------------------------------------------------------
   10. FINAL CALL TO ACTION SECTION
   -------------------------------------------------------------------------- */
.cls-final-cta-section {
    background:
        radial-gradient(circle 800px at 50% 100%, rgba(31, 78, 150, 0.3) 0%, transparent 70%),
        var(--cls-navy-950);
    padding: 6rem 0;
    border-top: 1px solid var(--cls-border-glass);
}

.cls-final-cta-box {
    background: linear-gradient(135deg, rgba(15, 36, 72, 0.85) 0%, rgba(7, 18, 36, 0.95) 100%);
    border: 1px solid var(--cls-border-highlight);
    border-radius: var(--cls-radius-xl);
    padding: 3.5rem 2.5rem;
    text-align: center;
    box-shadow: var(--cls-shadow-lg);
    max-width: 1040px;
    margin: 0 auto;
}

.cls-eyebrow-light {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

.cls-final-cta-title {
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: -0.02em;
    margin: 1rem 0;
}

.cls-final-cta-text {
    font-size: clamp(1rem, 1.4vw, 1.15rem);
    color: var(--cls-slate-300);
    max-width: 680px;
    margin: 0 auto 2.75rem;
    line-height: 1.65;
}

.cls-final-buttons-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
    margin-bottom: 2.5rem;
}

.cls-final-btn {
    background: linear-gradient(135deg, #1f4e96 0%, #102a52 100%);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--cls-radius-lg);
    padding: 1.25rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.85rem;
    text-align: left;
    transition: all 0.25s ease;
    box-shadow: var(--cls-shadow-sm);
}
.cls-final-btn i {
    font-size: 1.85rem;
    color: var(--cls-wa-emerald);
    flex-shrink: 0;
}
.cls-final-btn:hover {
    background: linear-gradient(135deg, var(--cls-wa-emerald) 0%, var(--cls-wa-dark) 100%);
    transform: translateY(-3px);
    box-shadow: 0 10px 24px rgba(37, 211, 102, 0.35);
}
.cls-final-btn:hover i {
    color: #ffffff;
}

.cls-fb-text {
    display: flex;
    flex-direction: column;
}
.cls-fb-loc {
    font-size: 0.72rem;
    text-transform: uppercase;
    color: var(--cls-slate-300);
    letter-spacing: 0.05em;
}
.cls-final-btn strong {
    font-family: var(--cls-font-heading);
    font-size: 0.98rem;
    font-weight: 800;
    color: #ffffff;
    line-height: 1.2;
}
.cls-fb-time {
    font-size: 0.75rem;
    color: var(--cls-gold-400);
    margin-top: 2px;
}
.cls-final-btn:hover .cls-fb-time,
.cls-final-btn:hover .cls-fb-loc {
    color: rgba(255, 255, 255, 0.9);
}

.cls-final-online-strip {
    padding-top: 2rem;
    border-top: 1px solid var(--cls-border-glass);
}
.cls-os-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-family: var(--cls-font-heading);
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--cls-gold-400);
    margin-bottom: 0.4rem;
}
.cls-os-note {
    font-size: 0.92rem;
    color: var(--cls-slate-400);
    max-width: 620px;
    margin: 0 auto;
}
.cls-final-online-btns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
    max-width: 820px;
    margin: 1.5rem auto 0;
}
.cls-final-btn-online {
    background: linear-gradient(135deg, rgba(16, 52, 32, 0.85) 0%, rgba(8, 26, 16, 0.95) 100%);
    border: 1px solid rgba(37, 211, 102, 0.35);
}
.cls-final-btn-online:hover {
    background: linear-gradient(135deg, var(--cls-wa-emerald) 0%, var(--cls-wa-dark) 100%);
}

.cls-online-notice-card {
    background: rgba(15, 36, 72, 0.45);
    border: 1px solid rgba(37, 211, 102, 0.28);
    border-radius: var(--cls-radius-lg);
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-top: 1.5rem;
}
.cls-online-notice-card i {
    font-size: 2rem;
    color: var(--cls-wa-emerald);
    flex-shrink: 0;
}
.cls-online-notice-card strong {
    font-family: var(--cls-font-heading);
    color: #ffffff;
    font-size: 0.95rem;
    display: block;
    margin-bottom: 0.25rem;
}
.cls-online-notice-card p {
    color: var(--cls-slate-300);
    font-size: 0.88rem;
    line-height: 1.5;
    margin: 0;
}

/* --------------------------------------------------------------------------
   11. INSTITUTIONAL FOOTER
   -------------------------------------------------------------------------- */
.cls-footer {
    background: #030810;
    color: var(--cls-slate-400);
    padding: 5rem 0 2.5rem;
    border-top: 1px solid var(--cls-border-glass);
}

.cls-footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3.5rem;
}

.cls-footer-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}
.cls-footer-brand strong {
    font-family: var(--cls-font-heading);
    font-size: 1.25rem;
    font-weight: 800;
    color: #ffffff;
}

.cls-footer-desc {
    font-size: 0.88rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.cls-footer-contacts p {
    font-size: 0.85rem;
    margin-bottom: 0.45rem;
    display: flex;
    align-items: center;
    gap: 0.55rem;
}
.cls-footer-contacts i {
    color: var(--cls-gold-400);
    width: 14px;
}
.cls-footer-contacts a:hover {
    color: #ffffff;
}

.cls-footer-head {
    font-family: var(--cls-font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #ffffff;
    margin-bottom: 1.25rem;
}

.cls-footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.cls-footer-links a {
    font-size: 0.88rem;
    color: var(--cls-slate-400);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}
.cls-footer-links a:hover {
    color: var(--cls-gold-400);
    transform: translateX(2px);
}

.cls-disclaimer-box {
    background: rgba(11, 26, 51, 0.5);
    border: 1px solid var(--cls-border-glass);
    border-radius: var(--cls-radius-md);
    padding: 1.25rem 1.5rem;
    font-size: 0.8rem;
    line-height: 1.6;
    margin-bottom: 2.5rem;
}
.cls-disclaimer-box strong {
    color: var(--cls-slate-300);
}

.cls-footer-bottom {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--cls-border-glass);
    font-size: 0.82rem;
}

.cls-legal-links {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.cls-legal-links a:hover {
    color: #ffffff;
}

/* --------------------------------------------------------------------------
   Floating Controls (WhatsApp & Back to Top)
   -------------------------------------------------------------------------- */
.cls-back-to-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(15, 36, 72, 0.9);
    border: 1px solid var(--cls-border-glass);
    color: #ffffff;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 990;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    box-shadow: var(--cls-shadow-md);
}
.cls-back-to-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.cls-back-to-top:hover {
    background: var(--cls-gold-500);
    color: var(--cls-navy-950);
}

.cls-floating-wa {
    position: fixed;
    bottom: 24px;
    left: 24px;
    width: 54px;
    height: 54px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--cls-wa-emerald), var(--cls-wa-dark));
    color: #ffffff;
    font-size: 1.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 990;
    box-shadow: 0 6px 24px rgba(37, 211, 102, 0.45);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.cls-floating-wa:hover {
    transform: scale(1.08) translateY(-2px);
    box-shadow: 0 10px 32px rgba(37, 211, 102, 0.6);
}

.cls-wa-tooltip {
    position: absolute;
    left: 66px;
    background: var(--cls-navy-950);
    color: #ffffff;
    font-family: var(--cls-font-heading);
    font-size: 0.78rem;
    font-weight: 700;
    padding: 0.4rem 0.85rem;
    border-radius: var(--cls-radius-pill);
    border: 1px solid var(--cls-border-glass);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-8px);
    transition: all 0.2s ease;
    pointer-events: none;
}
.cls-floating-wa:hover .cls-wa-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

/* --------------------------------------------------------------------------
   RESPONSIVE DESIGN SYSTEM
   Breakpoints: 1920px, 1440px, 1024px, 768px, 480px, 390px, 360px
   -------------------------------------------------------------------------- */

/* Large Desktop (1440px+) */
@media (min-width: 1440px) {
    .cls-container {
        max-width: 1320px;
    }
}

/* Laptop / Standard Desktop (1025px - 1200px) */
@media (max-width: 1200px) {
    .cls-footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2.5rem;
    }
    .cls-final-buttons-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* Tablet (769px - 1024px) */
@media (max-width: 1024px) {
    .cls-nav-menu {
        display: none;
    }
    .cls-mobile-toggle {
        display: flex;
    }
    .cls-nav-menu.is-open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--cls-navy-950);
        border-bottom: 1px solid var(--cls-border-glass);
        padding: 1.5rem;
        box-shadow: 0 12px 32px rgba(0, 0, 0, 0.6);
        gap: 0.75rem;
    }
    .cls-nav-link {
        width: 100%;
        padding: 0.65rem 1rem;
        font-size: 1rem;
    }

    .cls-videos-grid {
        grid-template-columns: 1fr 1fr;
    }
    .cls-video-card:last-child {
        grid-column: span 2;
        max-width: 580px;
        margin: 0 auto;
        width: 100%;
    }

    .cls-why-grid {
        grid-template-columns: 1fr 1fr;
    }

    .cls-loc-grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin: 0 auto;
    }

    .cls-teacher-card {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        text-align: center;
    }
    .cls-awards-subtitle {
        text-align: center;
    }
}

/* Small Tablet & Large Mobile (481px - 768px) */
@media (max-width: 768px) {
    .cls-section {
        padding: 4rem 0;
    }

    .cls-hero {
        padding: 3.5rem 0 4rem;
    }

    .cls-hero-actions {
        flex-direction: column;
        width: 100%;
    }
    .cls-hero-actions .cls-btn {
        width: 100%;
    }

    .cls-videos-grid {
        grid-template-columns: 1fr;
    }
    .cls-video-card:last-child {
        grid-column: span 1;
        max-width: 100%;
    }

    .cls-cards-grid {
        grid-template-columns: 1fr;
    }

    .cls-online-banner {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 2rem 1.5rem;
        gap: 1.5rem;
    }
    .cls-online-icon-col {
        display: flex;
        justify-content: center;
    }
    .cls-online-actions {
        justify-content: center;
    }

    .cls-viewer-toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    .cls-toolbar-left,
    .cls-page-tabs,
    .cls-toolbar-right {
        justify-content: center;
    }

    .cls-awards-grid {
        grid-template-columns: 1fr;
    }

    .cls-why-grid {
        grid-template-columns: 1fr;
    }

    .cls-perspective-grid {
        grid-template-columns: 1fr;
    }

    .cls-final-buttons-grid {
        grid-template-columns: 1fr;
    }
    .cls-final-online-btns {
        grid-template-columns: 1fr;
    }
    .cls-online-notice-card {
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }

    .cls-footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .cls-footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }

    .cls-floating-wa {
        bottom: 16px;
        left: 16px;
        width: 48px;
        height: 48px;
        font-size: 1.5rem;
    }
    .cls-back-to-top {
        bottom: 16px;
        right: 16px;
    }
}

/* Standard Mobile (360px - 480px) */
@media (max-width: 480px) {
    .cls-container {
        padding: 0 1rem;
    }

    .cls-hero-title {
        font-size: 2.1rem;
    }

    .cls-hero-tagline {
        font-size: 1.15rem;
    }

    .cls-teacher-pill {
        flex-direction: column;
        padding: 1rem;
        border-radius: var(--cls-radius-lg);
        width: 100%;
        text-align: center;
    }

    .cls-exam-page {
        padding: 1.25rem 0.85rem;
    }
    .cls-exam-border {
        padding: 1rem 0.65rem;
    }
    .cls-cb-row {
        grid-template-columns: 1fr;
    }
    .cls-exam-meta-row {
        flex-direction: column;
        gap: 0.25rem;
    }

    .cls-highlight-bar {
        padding: 1.5rem 1rem;
    }

    .cls-final-cta-box {
        padding: 2.5rem 1.25rem;
    }
}

/* Extra Small (320px - 360px) */
@media (max-width: 360px) {
    .cls-brand-title {
        font-size: 0.95rem;
    }
    .cls-btn-portal {
        display: none;
    }
    .cls-btn {
        font-size: 0.88rem;
        padding: 0.8rem 1.2rem;
    }
}

/* Reduced Motion for Accessibility */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}