/* ========================================
   AESTHEVISION - Corporate Website Styles
   ======================================== */

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

:root {
    --navy: #0A1628;
    --navy-light: #1E3A5F;
    --blue: #2563EB;
    --blue-light: #3B82F6;
    --blue-pale: #DBEAFE;
    --white: #FFFFFF;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-500: #64748B;
    --gray-700: #334155;
    --gray-900: #0F172A;
    --tedulia-orange: #E8713A;
    --tedulia-teal: #2A9D8F;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --max-width: 1200px;
    --transition: 0.3s ease;
}

html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    color: var(--gray-700);
    line-height: 1.6;
    background: var(--white);
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Header / Navbar --- */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    transition: background var(--transition);
}
.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.navbar-logo img {
    height: 32px;
    width: auto;
}
.navbar-nav {
    display: flex;
    align-items: center;
    gap: 32px;
}
.navbar-nav a {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.02em;
    transition: color var(--transition);
}
.navbar-nav a:hover { color: var(--white); }
.navbar-nav a.active { color: var(--white); }
.nav-cta {
    background: var(--blue) !important;
    color: var(--white) !important;
    padding: 8px 20px;
    border-radius: 6px;
    font-size: 14px;
    transition: background var(--transition) !important;
}
.nav-cta:hover { background: var(--blue-light) !important; }

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    margin: 5px 0;
    transition: var(--transition);
}

/* --- Hero Section --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--navy);
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.6;
}
.hero .container {
    position: relative;
    z-index: 2;
    padding-top: 72px;
}
.hero-content {
    max-width: 700px;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(37, 99, 235, 0.15);
    border: 1px solid rgba(37, 99, 235, 0.3);
    color: var(--blue-light);
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 24px;
}
.hero-badge::before {
    content: '';
    width: 6px; height: 6px;
    background: var(--blue-light);
    border-radius: 50%;
}
.hero h1 {
    font-size: clamp(36px, 5vw, 60px);
    font-weight: 700;
    color: var(--white);
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}
.hero h1 span {
    background: linear-gradient(135deg, var(--blue-light), #60A5FA);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero p {
    font-size: 18px;
    color: rgba(255,255,255,0.6);
    line-height: 1.7;
    margin-bottom: 36px;
    max-width: 540px;
}
.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font);
    font-size: 15px;
    font-weight: 600;
    padding: 14px 28px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
}
.btn-primary {
    background: var(--blue);
    color: var(--white);
}
.btn-primary:hover { background: var(--blue-light); transform: translateY(-1px); }
.btn-outline {
    background: transparent;
    color: var(--white);
    border: 1px solid rgba(255,255,255,0.25);
}
.btn-outline:hover { border-color: rgba(255,255,255,0.5); background: rgba(255,255,255,0.05); }
.btn-dark {
    background: var(--navy);
    color: var(--white);
}
.btn-dark:hover { background: var(--navy-light); }
.btn-tedulia {
    background: linear-gradient(135deg, var(--tedulia-orange), var(--tedulia-teal));
    color: var(--white);
}
.btn-tedulia:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(232,113,58,0.3); }
.btn-white {
    background: var(--white);
    color: var(--navy);
}
.btn-white:hover { background: var(--gray-100); transform: translateY(-1px); }
.btn svg { width: 18px; height: 18px; }

/* --- Sections --- */
.section {
    padding: 100px 0;
}
.section-dark {
    background: var(--navy);
    color: var(--white);
}
.section-gray {
    background: var(--gray-50);
}
.section-header {
    text-align: center;
    margin-bottom: 64px;
}
.section-label {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--blue);
    margin-bottom: 12px;
}
.section-dark .section-label { color: var(--blue-light); }
.section-header h2 {
    font-size: clamp(28px, 3.5vw, 42px);
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}
.section-dark .section-header h2 { color: var(--white); }
.section-header p {
    font-size: 17px;
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto;
}
.section-dark .section-header p { color: rgba(255,255,255,0.5); }

/* --- Company Info Cards --- */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}
.info-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    padding: 32px;
    transition: all var(--transition);
}
.info-card:hover {
    border-color: var(--blue);
    box-shadow: 0 4px 24px rgba(37, 99, 235, 0.08);
}
.info-card-icon {
    width: 48px; height: 48px;
    background: var(--blue-pale);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--blue);
}
.info-card-icon svg { width: 24px; height: 24px; }
.info-card h3 {
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}
.info-card p {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
}

/* --- Featured Product (Tedulia) --- */
.featured-product {
    position: relative;
    overflow: hidden;
}
.featured-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}
.featured-text h2 {
    font-size: clamp(28px, 3.5vw, 42px);
    font-weight: 700;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 20px;
}
.featured-text p {
    font-size: 17px;
    color: rgba(255,255,255,0.6);
    line-height: 1.7;
    margin-bottom: 32px;
}
.tedulia-logo-inline {
    height: 48px;
    width: auto;
    margin-bottom: 24px;
}
.feature-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 36px;
}
.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: rgba(255,255,255,0.75);
    font-size: 15px;
}
.feature-list li svg {
    width: 20px; height: 20px;
    color: var(--tedulia-teal);
    flex-shrink: 0;
    margin-top: 2px;
}

/* Teacher cards grid */
.teachers-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.teacher-card {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 3/4;
    background: var(--navy-light);
}
.teacher-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.teacher-card:hover img { transform: scale(1.05); }
.teacher-card-overlay {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    background: linear-gradient(transparent, rgba(10,22,40,0.85));
    padding: 20px 16px 16px;
}
.teacher-card-overlay h4 {
    color: var(--white);
    font-size: 15px;
    font-weight: 600;
}
.teacher-card-overlay span {
    color: rgba(255,255,255,0.5);
    font-size: 12px;
}

/* --- Services Section --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.service-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 16px;
    padding: 40px 32px;
    text-align: center;
    transition: all var(--transition);
}
.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.08);
    border-color: transparent;
}
.service-icon {
    width: 64px; height: 64px;
    background: var(--blue-pale);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: var(--blue);
}
.service-icon svg { width: 28px; height: 28px; }
.service-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}
.service-card p {
    font-size: 15px;
    color: var(--gray-500);
    line-height: 1.6;
}

/* --- Footer --- */
.footer {
    background: var(--navy);
    color: rgba(255,255,255,0.5);
    padding: 64px 0 32px;
    border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}
.footer-brand img {
    height: 28px;
    margin-bottom: 16px;
    filter: brightness(0) invert(1);
}
.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    max-width: 320px;
}
.footer h4 {
    color: var(--white);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 20px;
}
.footer ul li {
    margin-bottom: 10px;
}
.footer ul a {
    font-size: 14px;
    transition: color var(--transition);
}
.footer ul a:hover { color: var(--white); }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
}
.footer-bottom a { transition: color var(--transition); }
.footer-bottom a:hover { color: var(--white); }

/* --- Tedulia Presentation Page --- */
.tedulia-hero {
    position: relative;
    padding: 160px 0 100px;
    background: linear-gradient(135deg, var(--tedulia-orange), var(--tedulia-teal));
    overflow: hidden;
    text-align: center;
}
.tedulia-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 40%, rgba(255,255,255,0.15) 0%, transparent 60%);
}
.tedulia-hero .container { position: relative; z-index: 2; }
.tedulia-hero img.tedulia-hero-logo {
    height: 80px;
    margin: 0 auto 24px;
    border-radius: 16px;
}
.tedulia-hero h1 {
    font-size: clamp(32px, 4.5vw, 56px);
    font-weight: 700;
    color: var(--white);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}
.tedulia-hero p {
    font-size: 20px;
    color: rgba(255,255,255,0.85);
    max-width: 600px;
    margin: 0 auto 36px;
}

/* Concept grid */
.concept-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}
.concept-card {
    background: var(--white);
    border-radius: 16px;
    padding: 40px;
    border: 1px solid var(--gray-200);
    transition: all var(--transition);
}
.concept-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.06);
}
.concept-card .concept-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px; height: 36px;
    background: linear-gradient(135deg, var(--tedulia-orange), var(--tedulia-teal));
    color: var(--white);
    border-radius: 10px;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 20px;
}
.concept-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}
.concept-card p {
    font-size: 15px;
    color: var(--gray-500);
    line-height: 1.7;
}

/* Full teacher gallery */
.teacher-gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.teacher-gallery-card {
    text-align: center;
}
.teacher-gallery-card .teacher-img-wrap {
    width: 100%;
    aspect-ratio: 3/4;
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 16px;
    background: var(--gray-100);
}
.teacher-gallery-card .teacher-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.teacher-gallery-card:hover .teacher-img-wrap img { transform: scale(1.05); }
.teacher-gallery-card h4 {
    font-size: 17px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 4px;
}
.teacher-gallery-card span {
    font-size: 13px;
    color: var(--gray-500);
}

/* Stats row */
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}
.stat-item h3 {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
}
.stat-item p {
    font-size: 14px;
    color: rgba(255,255,255,0.5);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* CTA Section */
.cta-section {
    text-align: center;
    padding: 100px 0;
    background: var(--gray-50);
}
.cta-section h2 {
    font-size: clamp(28px, 3.5vw, 42px);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 16px;
}
.cta-section p {
    font-size: 17px;
    color: var(--gray-500);
    margin-bottom: 36px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* --- Responsive --- */
@media (max-width: 968px) {
    .featured-split { grid-template-columns: 1fr; gap: 48px; }
    .services-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .teacher-gallery { grid-template-columns: repeat(2, 1fr); }
    .stats-row { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .concept-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .navbar-nav {
        display: none;
        position: absolute;
        top: 72px; left: 0; right: 0;
        background: var(--navy);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .navbar-nav.active { display: flex; }
    .nav-toggle { display: block; }
    .hero { min-height: auto; padding: 120px 0 80px; }
    .hero-buttons { flex-direction: column; }
    .btn { width: 100%; }
    .teachers-showcase { gap: 12px; }
    .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    .info-grid { grid-template-columns: 1fr; }
}