/* === Inter Academy — Premium 2026 UI === */

:root {
    --navy: #0a0f1e;
    --navy-mid: #111827;
    --navy-light: #1a2332;
    --blue: #2563eb;
    --blue-soft: #3b82f6;
    --gold: #d4a843;
    --gold-soft: rgba(212,168,67,0.12);
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --green: #22c55e;
    --font: 'Inter', -apple-system, sans-serif;
    --font-display: 'Space Grotesk', sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
    font-family: var(--font);
    color: var(--gray-800);
    line-height: 1.6;
    background: var(--white);
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; }

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 16px 0;
    transition: all 0.4s ease;
}

.navbar.scrolled {
    background: rgba(10,15,30,0.96);
    backdrop-filter: blur(20px);
    padding: 12px 0;
    box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}

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

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-logo {
    width: 40px;
    height: 40px;
    border-radius: 10px;
}

.brand-mark {
    width: 40px;
    height: 40px;
    background: var(--gold);
    color: var(--navy);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    letter-spacing: -0.5px;
}

.brand-text { line-height: 1.2; }
.brand-name { font-family: var(--font-display); font-weight: 700; font-size: 0.95rem; color: var(--white); display: block; }
.brand-sub { font-size: 0.68rem; color: var(--gray-400); display: block; letter-spacing: 0.5px; }

.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    color: rgba(255,255,255,0.7);
    font-size: 0.85rem;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: 8px;
    transition: all 0.2s;
}

.nav-link:hover { color: #fff; background: rgba(255,255,255,0.06); }

.nav-phone {
    color: var(--gold) !important;
    font-weight: 600;
    font-size: 0.82rem;
}

.nav-cta {
    background: var(--white);
    color: var(--navy) !important;
    font-size: 0.82rem;
    font-weight: 600;
    padding: 9px 20px;
    border-radius: 8px;
    margin-left: 8px;
    transition: all 0.2s;
}

.nav-cta:hover { background: var(--gold); color: var(--navy) !important; }

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 32px;
    height: 32px;
    position: relative;
    z-index: 101;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--white);
    margin: 0 auto;
    transition: all 0.3s;
}

.nav-toggle span:first-child { margin-bottom: 7px; }
.nav-toggle.active span:first-child { transform: rotate(45deg) translate(3px, 3px); }
.nav-toggle.active span:last-child { transform: rotate(-45deg) translate(3px, -3px); }

/* ===== HERO ===== */
.hero {
    min-height: 100vh;
    background: var(--navy);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background-image: url('https://images.unsplash.com/photo-1575361204480-aadea25e6e68?w=1920&q=80');
    background-size: cover;
    background-position: center;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(10,15,30,0.92) 0%, rgba(10,15,30,0.75) 50%, rgba(10,15,30,0.88) 100%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(to top, var(--navy), transparent);
    pointer-events: none;
}

.hero-inner {
    position: relative;
    z-index: 1;
    padding: 140px 0 80px;
}

.hero-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--gold);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 24px;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.8rem, 5.5vw, 4.5rem);
    font-weight: 700;
    line-height: 1.08;
    color: var(--white);
    margin-bottom: 28px;
    letter-spacing: -1.5px;
}

.hero-title span {
    color: var(--gold);
}

.hero-desc {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--gray-400);
    max-width: 540px;
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.hero-metrics {
    display: flex;
    gap: 48px;
    margin-top: 80px;
    padding-top: 40px;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.metric-val {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--white);
    display: block;
    letter-spacing: -1px;
}

.metric-label {
    font-size: 0.78rem;
    color: var(--gray-500);
    margin-top: 4px;
    display: block;
}

/* ===== BUTTONS ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: var(--gold);
    color: var(--navy);
    font-family: var(--font);
    font-size: 0.9rem;
    font-weight: 600;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary:hover { background: #c49a38; transform: translateY(-1px); }

.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: transparent;
    color: var(--white);
    font-family: var(--font);
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 10px;
    transition: all 0.2s;
}

.btn-ghost:hover { border-color: rgba(255,255,255,0.5); background: rgba(255,255,255,0.04); }

.btn-full { width: 100%; justify-content: center; font-size: 0.95rem; padding: 16px; }

/* ===== SECTIONS ===== */
.section { padding: 120px 0; }

.section-dark {
    background: var(--navy);
    color: var(--white);
}

.section-muted {
    background: var(--gray-50);
}

.section-intro { margin-bottom: 64px; }

.overline {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    color: var(--gold);
    margin-bottom: 16px;
    display: block;
}

.overline-light { color: var(--gold); }

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    font-weight: 700;
    line-height: 1.15;
    color: var(--gray-900);
    letter-spacing: -0.8px;
}

.section-intro-light .section-title { color: var(--white); }

/* ===== ABOUT ===== */
.about-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

.about-text .text-lg {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--gray-700);
    margin-bottom: 20px;
}

.about-text p {
    color: var(--gray-500);
    margin-bottom: 16px;
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.feature-card {
    padding: 28px 24px;
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    transition: all 0.25s;
}

.feature-card:hover {
    border-color: var(--gold);
    box-shadow: 0 8px 30px rgba(0,0,0,0.06);
}

.feature-num {
    font-family: var(--font-display);
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--gold);
    margin-bottom: 14px;
    letter-spacing: 1px;
}

.feature-card h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 0.85rem;
    color: var(--gray-500);
    line-height: 1.6;
}

/* ===== PROGRAMS ===== */
.programs-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.program-card {
    background: var(--navy-light);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 14px;
    padding: 32px 24px 28px;
    position: relative;
    transition: all 0.3s;
}

.program-card:hover {
    border-color: rgba(255,255,255,0.12);
    transform: translateY(-4px);
}

.program-featured {
    border-color: var(--gold);
    background: linear-gradient(180deg, rgba(212,168,67,0.06) 0%, var(--navy-light) 100%);
}

.program-tag {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--gold);
    color: var(--navy);
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 4px 10px;
    border-radius: 6px;
}

.program-header { margin-bottom: 20px; }

.program-age {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: -2px;
    line-height: 1;
}

.program-age-label {
    font-size: 0.85rem;
    color: var(--gray-500);
    margin-left: 4px;
}

.program-card h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 10px;
}

.program-card > p {
    font-size: 0.85rem;
    color: var(--gray-400);
    line-height: 1.6;
    margin-bottom: 20px;
}

.program-card ul {
    margin-bottom: 24px;
}

.program-card li {
    font-size: 0.82rem;
    color: var(--gray-400);
    padding: 6px 0;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    display: flex;
    align-items: center;
    gap: 8px;
}

.program-card li::before {
    content: '';
    width: 4px;
    height: 4px;
    background: var(--gold);
    border-radius: 50%;
    flex-shrink: 0;
}

.program-link {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--gold);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.2s;
}

.program-link:hover { gap: 10px; }

/* ===== TRIAL FORM ===== */
.trial-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.trial-left .text-lg {
    font-size: 1.05rem;
    color: var(--gray-500);
    line-height: 1.8;
    margin-bottom: 32px;
}

.trial-info-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.trial-info-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--gray-50);
    border-radius: 12px;
}

.trial-info-item i {
    font-size: 1.2rem;
    color: var(--gold);
    width: 24px;
    text-align: center;
}

.trial-info-item span {
    font-size: 0.75rem;
    color: var(--gray-500);
    display: block;
}

.trial-info-item a {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gray-900);
}

.trial-info-item a:hover { color: var(--gold); }

.trial-form {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 16px;
    padding: 36px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-field {
    margin-bottom: 16px;
}

.form-field label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.optional { color: var(--gray-400); font-weight: 400; }

.form-field input,
.form-field select,
.form-field textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--gray-200);
    border-radius: 10px;
    font-family: var(--font);
    font-size: 0.9rem;
    color: var(--gray-800);
    transition: border 0.2s;
    background: var(--white);
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
    outline: none;
    border-color: var(--blue-soft);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.08);
}

.form-field textarea { resize: vertical; min-height: 72px; }

.form-check {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 20px;
    cursor: pointer;
    font-size: 0.8rem;
    color: var(--gray-500);
}

.form-check input { margin-top: 2px; accent-color: var(--blue); }

.form-success {
    text-align: center;
    padding: 60px 36px;
}

.success-icon {
    width: 56px;
    height: 56px;
    background: #dcfce7;
    color: var(--green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 20px;
}

.form-success h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.form-success p { color: var(--gray-500); }

/* ===== REVIEWS ===== */
.rating-summary {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 16px;
}

.rating-stars {
    color: var(--gold);
    font-size: 1.1rem;
    letter-spacing: 2px;
}

.rating-text {
    font-size: 0.85rem;
    color: var(--gray-500);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.review-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 14px;
    padding: 28px;
    transition: all 0.25s;
}

.review-card:hover {
    border-color: var(--gray-300);
    box-shadow: 0 8px 30px rgba(0,0,0,0.04);
}

.review-card p {
    font-size: 0.92rem;
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 20px;
}

.review-card footer {
    display: flex;
    align-items: center;
    gap: 8px;
}

.review-card footer strong {
    font-size: 0.88rem;
    color: var(--gray-800);
}

.review-card footer span {
    font-size: 0.78rem;
    color: var(--gray-400);
}

.review-card footer span::before {
    content: '·';
    margin-right: 8px;
}

/* ===== FAQ ===== */
.faq-list {
    max-width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 48px;
}

.faq-col {}

.faq-item {
    border-bottom: 1px solid var(--gray-200);
}

.faq-item summary {
    padding: 20px 0;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-800);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.2s;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
    content: '+';
    font-size: 1.3rem;
    font-weight: 300;
    color: var(--gray-400);
    transition: transform 0.2s;
}

.faq-item[open] summary::after {
    content: '−';
}

.faq-item[open] summary { color: var(--gold); }

.faq-body {
    padding-bottom: 20px;
}

.faq-body p {
    font-size: 0.92rem;
    color: var(--gray-500);
    line-height: 1.8;
}

/* ===== CONTACT ===== */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: start;
}

.contact-items {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-item i {
    color: var(--gold);
    font-size: 0.95rem;
    margin-top: 4px;
    width: 20px;
    text-align: center;
}

.contact-item strong {
    display: block;
    font-size: 0.85rem;
    color: var(--white);
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 0.88rem;
    color: var(--gray-400);
    line-height: 1.5;
}

.contact-item a { color: var(--gray-400); }
.contact-item a:hover { color: var(--gold); }

.contact-social {
    display: flex;
    gap: 12px;
    margin-top: 32px;
}

.contact-social a {
    width: 40px;
    height: 40px;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    font-size: 1.1rem;
    transition: all 0.2s;
}

.contact-social a:hover {
    border-color: var(--gold);
    color: var(--gold);
}

.contact-map {
    border-radius: 14px;
    overflow: hidden;
    min-height: 400px;
    background: var(--navy-light);
}

.contact-map iframe { display: block; }

/* ===== FOOTER ===== */
.footer {
    background: var(--navy);
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 32px 0;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--white);
}

.footer-brand .brand-mark { width: 32px; height: 32px; font-size: 0.72rem; border-radius: 8px; }
.footer-logo-img { width: 32px; height: 32px; border-radius: 8px; }
.footer-brand strong { font-family: var(--font-display); font-size: 0.88rem; display: block; }
.footer-brand span { font-size: 0.72rem; color: var(--gray-500); display: block; }

.footer-copy { font-size: 0.78rem; color: var(--gray-500); }

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    font-size: 0.8rem;
    color: var(--gray-400);
    transition: color 0.2s;
}

.footer-links a:hover { color: var(--gold); }

/* ===== FLOAT BUTTONS ===== */
.wa-float {
    position: fixed;
    bottom: 88px;
    right: 20px;
    width: 52px;
    height: 52px;
    background: #22c55e;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.5rem;
    box-shadow: 0 4px 16px rgba(34,197,94,0.3);
    z-index: 90;
    transition: transform 0.2s;
}

.wa-float:hover { transform: translateY(-2px); }

.phone-float {
    position: fixed;
    bottom: 24px;
    right: 20px;
    width: 52px;
    height: 52px;
    background: var(--navy);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.2rem;
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
    z-index: 90;
    transition: transform 0.2s;
}

.phone-float:hover { transform: translateY(-2px); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .programs-grid { grid-template-columns: 1fr 1fr; }
    .about-layout { grid-template-columns: 1fr; gap: 48px; }
    .trial-layout { grid-template-columns: 1fr; gap: 40px; }
    .contact-layout { grid-template-columns: 1fr; gap: 40px; }
    .hero-metrics { gap: 32px; }
    .reviews-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .nav-toggle { display: flex; flex-direction: column; justify-content: center; }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--navy);
        flex-direction: column;
        padding: 80px 32px 40px;
        transition: right 0.3s ease;
        align-items: flex-start;
        gap: 0;
    }

    .nav-menu.active { right: 0; }

    .nav-link {
        display: block;
        width: 100%;
        padding: 14px 0;
        font-size: 1rem;
        border-bottom: 1px solid rgba(255,255,255,0.04);
    }

    .nav-cta { margin-left: 0; margin-top: 16px; text-align: center; display: block; }

    .hero-inner { padding: 120px 0 60px; }
    .hero-title { font-size: 2.2rem; }
    .hero-metrics { flex-wrap: wrap; gap: 24px; }
    .metric { min-width: calc(50% - 12px); }

    .section { padding: 80px 0; }
    .programs-grid { grid-template-columns: 1fr; }
    .about-features { grid-template-columns: 1fr; }
    .reviews-grid { grid-template-columns: 1fr; }
    .faq-list { grid-template-columns: 1fr; gap: 0; }
    .form-row { grid-template-columns: 1fr; }

    .footer-inner { flex-direction: column; text-align: center; }
    .footer-links { flex-wrap: wrap; justify-content: center; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 1.8rem; }
    .hero-actions { flex-direction: column; }
    .hero-actions .btn-primary,
    .hero-actions .btn-ghost { width: 100%; justify-content: center; }
    .trial-form { padding: 24px; }
    .contact-map { min-height: 280px; }
}