/* ==========================================================================
   The Lab Indonesia - Light Theme Landing Page Design System
   Brand Color Identity:
   - Golden Yellow:  #F6C551
   - Deep Navy:      #0E1B4D
   - Vibrant Teal:   #45B7CD
   - Crisp Background: #FAFCFF / #FFFFFF
   ========================================================================== */

:root {
    /* Brand Core Palette */
    --brand-yellow: #F6C551;
    --brand-yellow-light: #FEF8E7;
    --brand-yellow-hover: #EBB63C;
    --brand-yellow-glow: rgba(246, 197, 81, 0.35);

    --brand-navy: #0E1B4D;
    --brand-navy-dark: #070E29;
    --brand-navy-light: #182C75;
    --brand-navy-tint: rgba(14, 27, 77, 0.05);

    --brand-teal: #45B7CD;
    --brand-teal-light: #EDF9FB;
    --brand-teal-hover: #35A3B8;
    --brand-teal-glow: rgba(69, 183, 205, 0.28);

    /* Light Theme Surfaces */
    --bg-page: #FAFCFF;
    --bg-card: #FFFFFF;
    --bg-elevated: #FFFFFF;
    --bg-subtle: #F1F5F9;
    --bg-tint-mesh: radial-gradient(at 0% 0%, rgba(69, 183, 205, 0.08) 0px, transparent 50%),
                    radial-gradient(at 100% 0%, rgba(246, 197, 81, 0.09) 0px, transparent 50%),
                    radial-gradient(at 50% 100%, rgba(14, 27, 77, 0.04) 0px, transparent 50%);

    /* Typography Colors */
    --text-heading: #0E1B4D;
    --text-body: #334155;
    --text-muted: #64748B;
    --text-on-dark: #FFFFFF;

    /* Borders & Shadows */
    --border-subtle: rgba(14, 27, 77, 0.08);
    --border-hover: rgba(69, 183, 205, 0.4);
    --border-strong: rgba(14, 27, 77, 0.16);

    --shadow-sm: 0 2px 8px rgba(14, 27, 77, 0.04);
    --shadow-md: 0 10px 30px rgba(14, 27, 77, 0.07);
    --shadow-lg: 0 20px 50px rgba(14, 27, 77, 0.1);
    --shadow-colored: 0 14px 40px rgba(69, 183, 205, 0.18);

    /* Radii */
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-pill: 9999px;

    /* Fonts */
    --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --font-heading: 'Outfit', 'Plus Jakarta Sans', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --transition-smooth: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Global */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-page);
    background-image: var(--bg-tint-mesh);
    background-attachment: fixed;
    color: var(--text-body);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Layout Utilities */
.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 1. Top Announcement Bar */
.announcement-bar {
    background: var(--brand-navy);
    color: #FFFFFF;
    font-size: 13px;
    padding: 10px 20px;
    text-align: center;
    font-weight: 500;
}

.announcement-bar a {
    color: var(--brand-yellow);
    text-decoration: none;
    font-weight: 700;
    margin-left: 8px;
    transition: var(--transition-smooth);
}

.announcement-bar a:hover {
    color: #FFFFFF;
    text-decoration: underline;
}

/* 2. Navigation */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-subtle);
    transition: var(--transition-smooth);
}

.navbar .nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
}

.brand-icon-svg,
.brand-logo-img {
    height: 54px;
    width: auto;
    display: block;
    object-fit: contain;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    list-style: none;
}

.nav-links a {
    color: var(--text-body);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition-smooth);
    position: relative;
}

.nav-links a:hover {
    color: var(--brand-navy);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--brand-teal);
    transition: var(--transition-smooth);
    border-radius: var(--radius-pill);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-pill);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-decoration: none;
    border: none;
}

.btn-primary {
    background: var(--brand-navy);
    color: #FFFFFF;
    box-shadow: 0 4px 14px rgba(14, 27, 77, 0.2);
}

.btn-primary:hover {
    background: var(--brand-navy-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(14, 27, 77, 0.28);
}

.btn-teal {
    background: var(--brand-teal);
    color: #FFFFFF;
    box-shadow: 0 4px 14px var(--brand-teal-glow);
}

.btn-teal:hover {
    background: var(--brand-teal-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--brand-teal-glow);
}

.btn-yellow {
    background: var(--brand-yellow);
    color: var(--brand-navy);
    box-shadow: 0 4px 14px var(--brand-yellow-glow);
}

.btn-yellow:hover {
    background: var(--brand-yellow-hover);
    transform: translateY(-2px);
}

.btn-outline {
    background: #FFFFFF;
    color: var(--brand-navy);
    border: 1.5px solid var(--border-strong);
}

.btn-outline:hover {
    border-color: var(--brand-teal);
    color: var(--brand-teal-hover);
    background: var(--brand-teal-light);
}

.btn-instructor-portal {
    background: var(--brand-yellow-light);
    color: #8C5E00;
    border: 1.5px solid rgba(246, 197, 81, 0.5);
    font-size: 13px;
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-instructor-portal:hover {
    background: var(--brand-yellow);
    color: var(--brand-navy);
    border-color: var(--brand-yellow);
}

.live-dot {
    width: 8px;
    height: 8px;
    background: #10B981;
    border-radius: 50%;
    box-shadow: 0 0 8px #10B981;
}

/* 3. Hero Section */
.hero {
    padding: 70px 0 90px;
    position: relative;
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 56px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: #FFFFFF;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-sm);
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    font-size: 13px;
    font-weight: 700;
    color: var(--brand-navy);
    margin-bottom: 24px;
}

.badge-symbols {
    display: flex;
    align-items: center;
    gap: 4px;
}

.b-dot {
    display: inline-block;
    border-radius: var(--radius-pill);
}

.b-dot.yellow { width: 6px; height: 14px; background: var(--brand-yellow); }
.b-dot.navy { width: 10px; height: 10px; background: var(--brand-navy); border-radius: 2px; }
.b-dot.teal { width: 10px; height: 10px; background: var(--brand-teal); border-radius: 50%; }

.hero-title {
    font-family: var(--font-heading);
    font-size: 54px;
    line-height: 1.12;
    font-weight: 800;
    color: var(--brand-navy);
    letter-spacing: -1.2px;
    margin-bottom: 20px;
}

.hero-title .highlight-teal {
    color: var(--brand-teal);
    position: relative;
}

.hero-title .highlight-yellow {
    background: linear-gradient(120deg, var(--brand-yellow) 0%, #FFA800 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-muted);
    line-height: 1.65;
    margin-bottom: 36px;
    max-width: 580px;
}

.hero-buttons {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 44px;
}

.hero-stats-ribbon {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    padding-top: 28px;
    border-top: 1px solid var(--border-subtle);
}

.stat-col h4 {
    font-family: var(--font-heading);
    font-size: 26px;
    font-weight: 800;
    color: var(--brand-navy);
}

.stat-col p {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
}

/* Hero Right Interactive Card */
.hero-visual {
    position: relative;
}

.visual-card-main {
    background: #FFFFFF;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-lg);
    padding: 30px;
    position: relative;
    z-index: 2;
    backdrop-filter: blur(12px);
}

.card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.status-tag {
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    padding: 4px 10px;
    border-radius: var(--radius-pill);
    background: var(--brand-teal-light);
    color: var(--brand-teal-hover);
}

.cohort-spot-title {
    font-size: 18px;
    font-weight: 800;
    color: var(--brand-navy);
    margin-bottom: 6px;
}

.cohort-spot-desc {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.workstation-telemetry {
    background: var(--bg-subtle);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.telemetry-row {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
}

.telemetry-row span:first-child {
    color: var(--text-muted);
    font-weight: 500;
}

.telemetry-row span:last-child {
    font-weight: 700;
    color: var(--brand-navy);
    font-family: var(--font-mono);
}

.progress-track {
    height: 8px;
    background: rgba(14, 27, 77, 0.08);
    border-radius: var(--radius-pill);
    overflow: hidden;
}

.progress-fill-gradient {
    height: 100%;
    background: linear-gradient(90deg, var(--brand-yellow) 0%, var(--brand-teal) 100%);
    border-radius: var(--radius-pill);
}

.floating-badge {
    position: absolute;
    background: #FFFFFF;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-colored);
    padding: 14px 20px;
    border: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 3;
}

.floating-badge.badge-one {
    bottom: -24px;
    left: -24px;
}

.floating-badge.badge-two {
    top: -20px;
    right: -20px;
}

.fb-icon {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
}

.fb-icon.teal { background: var(--brand-teal-light); color: var(--brand-teal); }
.fb-icon.yellow { background: var(--brand-yellow-light); color: #B38100; }

.fb-text strong {
    font-size: 13px;
    display: block;
    color: var(--brand-navy);
}

.fb-text small {
    font-size: 11px;
    color: var(--text-muted);
}

/* 4. Brand Tri-Color Identity Banner */
.brand-identity-section {
    padding: 40px 0;
}

.identity-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.identity-card {
    background: #FFFFFF;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-sm);
    padding: 28px;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.identity-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.identity-card.card-yellow { border-top: 5px solid var(--brand-yellow); }
.identity-card.card-navy { border-top: 5px solid var(--brand-navy); }
.identity-card.card-teal { border-top: 5px solid var(--brand-teal); }

.identity-symbol {
    margin-bottom: 16px;
}

.identity-card h3 {
    font-family: var(--font-heading);
    font-size: 20px;
    color: var(--brand-navy);
    margin-bottom: 8px;
    font-weight: 800;
}

.identity-card p {
    font-size: 14px;
    color: var(--text-muted);
}

/* 5. Flagship Programs Section */
.section-programs {
    padding: 90px 0;
}

.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 52px;
}

.section-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--brand-teal);
    background: var(--brand-teal-light);
    padding: 4px 14px;
    border-radius: var(--radius-pill);
    margin-bottom: 12px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 38px;
    font-weight: 800;
    color: var(--brand-navy);
    line-height: 1.2;
    margin-bottom: 14px;
}

.section-desc {
    font-size: 16px;
    color: var(--text-muted);
}

.programs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 28px;
}

.program-card {
    background: #FFFFFF;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 32px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition-smooth);
}

.program-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.program-top-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.program-code {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 700;
    color: var(--brand-navy);
    background: var(--bg-subtle);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
}

.program-title {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 800;
    color: var(--brand-navy);
    margin-bottom: 12px;
}

.program-desc {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 24px;
    line-height: 1.6;
}

.program-features {
    list-style: none;
    margin-bottom: 28px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.program-features li {
    font-size: 13px;
    color: var(--text-body);
    display: flex;
    align-items: center;
    gap: 10px;
}

.program-features svg {
    color: var(--brand-teal);
    flex-shrink: 0;
}

.program-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 20px;
    border-top: 1px solid var(--border-subtle);
}

.program-duration {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 600;
}

/* 6. Instructor Portal Spotlight Section */
.section-portal-spotlight {
    padding: 80px 0;
}

.portal-box {
    background: linear-gradient(135deg, var(--brand-navy) 0%, #081133 100%);
    color: #FFFFFF;
    border-radius: var(--radius-xl);
    padding: 56px 64px;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    align-items: center;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.portal-box::after {
    content: '';
    position: absolute;
    right: -100px;
    top: -100px;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(69, 183, 205, 0.25) 0%, transparent 70%);
    border-radius: 50%;
}

.portal-text h2 {
    font-family: var(--font-heading);
    font-size: 34px;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.25;
}

.portal-text p {
    font-size: 16px;
    color: #CBD5E1;
    margin-bottom: 32px;
    line-height: 1.6;
}

.portal-meta-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 32px;
}

.pm-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: #E2E8F0;
    font-weight: 600;
}

.pm-item svg {
    color: var(--brand-yellow);
}

.portal-preview-card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(14px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.ppc-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.ppc-host {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--brand-teal);
}

.ppc-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-size: 13px;
}

.ppc-list li {
    display: flex;
    justify-content: space-between;
    color: #94A3B8;
}

.ppc-list strong {
    color: #FFFFFF;
    font-family: var(--font-mono);
}

/* 7. The Lab Methodology Pillars */
.methodology-section {
    padding: 90px 0;
    background: #FFFFFF;
}

.methodology-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 28px;
}

.method-card {
    padding: 28px;
    border-radius: var(--radius-lg);
    background: var(--bg-page);
    border: 1px solid var(--border-subtle);
    transition: var(--transition-smooth);
}

.method-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--brand-teal);
}

.method-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-weight: 800;
}

.method-icon.yellow { background: var(--brand-yellow-light); color: #B38100; }
.method-icon.navy { background: var(--brand-navy-tint); color: var(--brand-navy); }
.method-icon.teal { background: var(--brand-teal-light); color: var(--brand-teal-hover); }

.method-card h3 {
    font-family: var(--font-heading);
    font-size: 19px;
    font-weight: 800;
    color: var(--brand-navy);
    margin-bottom: 10px;
}

.method-card p {
    font-size: 14px;
    color: var(--text-muted);
}

/* 8. Footer */
.footer {
    background: #FFFFFF;
    border-top: 1px solid var(--border-subtle);
    padding: 60px 0 30px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 48px;
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-muted);
    margin: 16px 0 20px;
    max-width: 320px;
}

.footer-col h4 {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 800;
    color: var(--brand-navy);
    margin-bottom: 18px;
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition-smooth);
}

.footer-col a:hover {
    color: var(--brand-teal-hover);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 28px;
    border-top: 1px solid var(--border-subtle);
    font-size: 13px;
    color: var(--text-muted);
}

/* 9. Registration & Consultation Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(14, 27, 77, 0.6);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-overlay.active {
    display: flex;
}

.modal-card {
    background: #FFFFFF;
    border-radius: var(--radius-lg);
    width: 480px;
    max-width: 92vw;
    padding: 32px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-subtle);
    animation: modalIn 0.25s ease-out;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-header h3 {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 800;
    color: var(--brand-navy);
}

.close-btn {
    background: transparent;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-muted);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 16px;
}

.form-group label {
    font-size: 13px;
    font-weight: 700;
    color: var(--brand-navy);
}

.form-control {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    border: 1.5px solid var(--border-strong);
    font-size: 14px;
    outline: none;
    font-family: var(--font-sans);
    transition: var(--transition-smooth);
}

.form-control:focus {
    border-color: var(--brand-teal);
    box-shadow: 0 0 0 3px var(--brand-teal-light);
}

/* Responsive Media Queries */
@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .portal-box {
        grid-template-columns: 1fr;
        padding: 36px;
    }
    .footer-top {
        grid-template-columns: 1fr 1fr;
    }
    .hero-title {
        font-size: 42px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .hero-stats-ribbon {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }
    .identity-grid {
        grid-template-columns: 1fr;
    }
    .footer-top {
        grid-template-columns: 1fr;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}