/* ========== AImartva.ge — Enhanced Main Stylesheet ========== */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+Georgian:wght@400;500;600;700;800;900&family=Outfit:wght@400;500;600;700;800;900&display=swap');

/* ===== Variables ===== */
:root {
    --bg: #fafbfe;
    --bg-secondary: #f0f4f8;
    --bg-card: #ffffff;
    --text: #1a1a2e;
    --text-secondary: #555770;
    --text-muted: #8e90a6;
    --accent: #2563eb;
    --accent-glow: rgba(37,99,235,0.08);
    --accent-orange: #f97316;
    --accent-green: #10b981;
    --accent-purple: #8b5cf6;
    --accent-cyan: #06b6d4;
    --accent-red: #ef4444;
    --border: rgba(0,0,0,0.06);
    --border-strong: rgba(0,0,0,0.12);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.08);
    --shadow-xl: 0 16px 48px rgba(0,0,0,0.1);
    --radius: 12px;
    --radius-lg: 20px;
    --radius-full: 50px;
    --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
    --font-geo: 'Noto Sans Georgian', sans-serif;
    --font-en: 'Outfit', sans-serif;
}

/* Dark Mode */
[data-theme="dark"] {
    --bg: #0a0a1a;
    --bg-secondary: #111128;
    --bg-card: #16163a;
    --text: #e8e8f0;
    --text-secondary: #a0a0c0;
    --text-muted: #6b6b8d;
    --accent-glow: rgba(37,99,235,0.15);
    --border: rgba(255,255,255,0.06);
    --border-strong: rgba(255,255,255,0.12);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.3);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.4);
    --shadow-xl: 0 16px 48px rgba(0,0,0,0.5);
}

/* ===== Reset ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { 
    font-family: var(--font-geo); 
    background: var(--bg); 
    color: var(--text); 
    line-height: 1.7; 
    font-size: 17px; /* +1px for better readability */
    transition: background var(--transition), color var(--transition); 
}
a { text-decoration: none; color: inherit; transition: all var(--transition); }
img { max-width: 100%; height: auto; }
ul { list-style: none; }

/* ===== Container - Wider for Desktop ===== */
.container { 
    max-width: 1600px; /* 1200px → 1600px */
    margin: 0 auto; 
    padding: 0 32px; /* 24px → 32px */
}

/* Tablet breakpoint */
@media (max-width: 1400px) {
    .container { max-width: 1200px; padding: 0 28px; }
}

@media (max-width: 1024px) {
    .container { max-width: 960px; padding: 0 24px; }
}

/* ===== Header ===== */
.header { 
    position: fixed; 
    top: 0; 
    left: 0; 
    right: 0; 
    z-index: 1000; 
    padding: 18px 0; /* 16px → 18px */
    transition: all var(--transition); 
    background: transparent; 
}
.header.scrolled { 
    background: rgba(250,251,254,0.9); /* 0.85 → 0.9 */
    backdrop-filter: blur(24px); /* 20px → 24px */
    -webkit-backdrop-filter: blur(24px); 
    box-shadow: var(--shadow-md); /* sm → md */
    padding: 12px 0; /* 10px → 12px */
}
[data-theme="dark"] .header.scrolled { background: rgba(10,10,26,0.9); }
.header-inner { display: flex; align-items: center; justify-content: space-between; }

/* Logo - Slightly larger */
.logo-link { display: flex; align-items: center; gap: 16px; /* 14px → 16px */ }
.logo-img { 
    height: 75px; /* 70px → 75px */
    width: auto; 
    object-fit: contain; 
    transition: transform var(--transition); 
}
.logo-link:hover .logo-img { transform: scale(1.05); }
.logo-text { 
    font-family: var(--font-en); 
    font-size: 1.85rem; /* 1.7rem → 1.85rem */
    font-weight: 800; 
    letter-spacing: -0.5px; 
    color: var(--text); 
}
.logo-highlight { 
    background: linear-gradient(135deg, var(--accent), var(--accent-purple)); 
    -webkit-background-clip: text; 
    -webkit-text-fill-color: transparent; 
    background-clip: text; 
}

/* Nav - Better spacing */
.nav { display: flex; align-items: center; gap: 40px; /* 32px → 40px */ }
.nav-link { 
    font-size: 0.98rem; /* 0.92rem → 0.98rem */
    font-weight: 500; 
    color: var(--text-secondary); 
    position: relative; 
}
.nav-link:hover { color: var(--accent); }
.nav-link::after { 
    content: ''; 
    position: absolute; 
    bottom: -4px; 
    left: 0; 
    width: 0; 
    height: 2px; 
    background: var(--accent); 
    border-radius: 2px; 
    transition: width var(--transition); 
}
.nav-link:hover::after { width: 100%; }

/* Header Actions - Larger buttons */
.header-actions { display: flex; align-items: center; gap: 14px; /* 12px → 14px */ }
.theme-toggle { 
    width: 44px; /* 40px → 44px */
    height: 44px; 
    border-radius: 50%; 
    border: 1px solid var(--border-strong); 
    background: var(--bg-card); 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    cursor: pointer; 
    color: var(--text-secondary); 
    transition: all var(--transition); 
}
.theme-toggle:hover { 
    border-color: var(--accent); 
    color: var(--accent); 
    transform: scale(1.05);
}
.theme-icon.moon { display: none; }
[data-theme="dark"] .theme-icon.sun { display: none; }
[data-theme="dark"] .theme-icon.moon { display: block; }

.btn-header { 
    padding: 12px 28px; /* 10px 24px → 12px 28px */
    border-radius: var(--radius-full); 
    background: linear-gradient(135deg, var(--accent), var(--accent-purple)); 
    color: #fff; 
    font-size: 0.96rem; /* 0.9rem → 0.96rem */
    font-weight: 600; 
    border: none; 
    cursor: pointer; 
    box-shadow: 0 4px 15px rgba(37,99,235,0.3); 
}
.btn-header:hover { 
    transform: translateY(-2px); 
    box-shadow: 0 6px 24px rgba(37,99,235,0.4); 
}

.btn-header-outline { 
    padding: 12px 28px; 
    border-radius: var(--radius-full); 
    background: transparent; 
    color: var(--text); 
    font-size: 0.96rem; 
    font-weight: 600; 
    border: 1px solid var(--border-strong); 
    cursor: pointer; 
    transition: all var(--transition); 
}
.btn-header-outline:hover { 
    border-color: var(--accent); 
    color: var(--accent); 
    transform: translateY(-1px);
}

.btn-header-profile { 
    display: flex; 
    align-items: center; 
    gap: 10px; /* 8px → 10px */
    padding: 10px 24px; /* 8px 20px → 10px 24px */
    border-radius: var(--radius-full); 
    background: linear-gradient(135deg, var(--accent), var(--accent-purple)); 
    color: #fff; 
    font-size: 0.94rem; /* 0.88rem → 0.94rem */
    font-weight: 600; 
    transition: all var(--transition); 
}
.btn-header-profile:hover { 
    transform: translateY(-2px); 
    box-shadow: 0 6px 20px rgba(37,99,235,0.4); 
}

.mobile-menu-btn { 
    display: none; 
    width: 44px; 
    height: 44px; 
    border: none; 
    background: none; 
    cursor: pointer; 
    flex-direction: column; 
    align-items: center; 
    justify-content: center; 
    gap: 6px; 
}
.mobile-menu-btn span { 
    display: block; 
    width: 24px; 
    height: 2px; 
    background: var(--text); 
    border-radius: 2px; 
    transition: all var(--transition); 
}

/* ===== Hero - Enhanced ===== */
.hero { 
    position: relative; 
    min-height: 100vh; 
    display: flex; 
    align-items: center; 
    padding-top: 110px; /* 100px → 110px */
    overflow: hidden; 
}
.hero-bg { 
    position: absolute; 
    inset: 0; 
    background: url('../images/hero-bg.png') center/cover no-repeat; 
    z-index: 0; 
}
.hero-overlay { 
    position: absolute; 
    inset: 0; 
    background: linear-gradient(to right, rgba(10,10,26,0.88) 0%, rgba(10,10,26,0.65) 30%, rgba(10,10,26,0.15) 50%, transparent 60%); 
}
[data-theme="dark"] .hero-overlay { 
    background: linear-gradient(to right, rgba(10,10,26,0.88) 0%, rgba(10,10,26,0.65) 30%, rgba(10,10,26,0.15) 50%, transparent 60%); 
}

.hero-grid { 
    position: relative; 
    z-index: 2; 
    display: grid; 
    grid-template-columns: 1.2fr 1fr; /* More space for content */
    gap: 80px; /* 60px → 80px */
    align-items: center; 
}

@media (max-width: 1200px) {
    .hero-grid { 
        grid-template-columns: 1fr 1fr; 
        gap: 60px; 
    }
}

@media (max-width: 1024px) {
    .hero-grid { 
        grid-template-columns: 1.1fr 0.9fr; 
        gap: 40px; 
    }
}

.hero-content { padding: 50px 0; /* 40px → 50px */ }

.hero-badge { 
    display: inline-flex; 
    align-items: center; 
    gap: 10px; /* 8px → 10px */
    padding: 10px 22px; /* 8px 18px → 10px 22px */
    border-radius: var(--radius-full); 
    background: rgba(37,99,235,0.2); 
    color: #a5c4ff; 
    font-size: 0.92rem; /* 0.85rem → 0.92rem */
    font-weight: 600; 
    margin-bottom: 28px; /* 24px → 28px */
    border: 1px solid rgba(37,99,235,0.3); 
    backdrop-filter: blur(8px); 
}

.hero-title { 
    font-size: 3.6rem; /* 3.2rem → 3.6rem */
    font-weight: 900; 
    line-height: 1.15; 
    margin-bottom: 24px; /* 20px → 24px */
    color: #fff; 
}

@media (max-width: 1400px) {
    .hero-title { font-size: 3.2rem; }
}

@media (max-width: 1200px) {
    .hero-title { font-size: 2.8rem; }
}

.hero-title .highlight { 
    background: linear-gradient(135deg, var(--accent), var(--accent-purple)); 
    -webkit-background-clip: text; 
    -webkit-text-fill-color: transparent; 
    background-clip: text; 
}

.hero-subtitle { 
    font-size: 1.18rem; /* 1.1rem → 1.18rem */
    color: rgba(255,255,255,0.85); /* 0.8 → 0.85 */
    line-height: 1.8; 
    margin-bottom: 40px; /* 36px → 40px */
    max-width: 520px; /* 480px → 520px */
}

@media (max-width: 1200px) {
    .hero-subtitle { font-size: 1.08rem; max-width: 480px; }
}

.hero-buttons { display: flex; gap: 16px; /* 14px → 16px */ flex-wrap: wrap; }

/* Buttons - Enhanced */
.btn { 
    display: inline-flex; 
    align-items: center; 
    gap: 10px; /* 8px → 10px */
    padding: 16px 36px; /* 14px 30px → 16px 36px */
    border-radius: var(--radius-full); 
    font-size: 1.02rem; /* 0.95rem → 1.02rem */
    font-weight: 600; 
    border: none; 
    cursor: pointer; 
    transition: all var(--transition); 
    font-family: var(--font-geo); 
}

.btn-primary { 
    background: linear-gradient(135deg, var(--accent), var(--accent-purple)); 
    color: #fff; 
    box-shadow: 0 4px 20px rgba(37,99,235,0.3); 
}
.btn-primary:hover { 
    transform: translateY(-3px); /* -2px → -3px */
    box-shadow: 0 8px 32px rgba(37,99,235,0.45); 
}

.btn-outline { 
    background: var(--bg-card); 
    color: var(--text); 
    border: 1px solid var(--border-strong); 
}
.btn-outline:hover { 
    border-color: var(--accent); 
    color: var(--accent); 
    transform: translateY(-2px);
}

.btn-lg { 
    padding: 20px 44px; /* 18px 40px → 20px 44px */
    font-size: 1.1rem; /* 1.05rem → 1.1rem */
}

/* ===== Chat Preview - Enhanced ===== */
.hero-visual { position: relative; margin-top: 220px; }

.chat-preview {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 16px; /* 14px → 16px */
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 16px 20px; /* 14px 18px → 16px 20px */
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transition: all var(--transition);
}

.chat-preview:hover { 
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.chat-header-bar {
    display: flex;
    align-items: center;
    gap: 10px; /* 8px → 10px */
    padding-bottom: 12px; /* 10px → 12px */
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 12px; /* 10px → 12px */
}

.chat-avatar { 
    width: 34px; /* 30px → 34px */
    height: 34px; 
    border-radius: 50%; 
    background: linear-gradient(135deg, var(--accent), var(--accent-purple)); 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    color: #fff; 
    font-weight: 800; 
    font-size: 0.7rem; /* 0.65rem → 0.7rem */
}

.chat-name { 
    font-weight: 700; 
    font-size: 0.88rem; /* 0.8rem → 0.88rem */
    color: #fff; 
}

.chat-status-dot { 
    font-size: 0.8rem; /* 0.75rem → 0.8rem */
    color: var(--accent-green); 
}
.chat-status-dot::before { 
    content: ''; 
    display: inline-block; 
    width: 7px; /* 6px → 7px */
    height: 7px; 
    border-radius: 50%; 
    background: var(--accent-green); 
    margin-right: 7px; /* 6px → 7px */
}

.chat-messages { 
    display: grid; 
    grid-template-columns: 1fr 1fr; 
    gap: 8px; /* 6px → 8px */
}

.chat-msg {
    padding: 10px 14px; /* 8px 12px → 10px 14px */
    border-radius: 12px;
    font-size: 0.84rem; /* 0.78rem → 0.84rem */
    line-height: 1.5; /* 1.4 → 1.5 */
    max-width: 100%;
    animation: fadeInMsg 0.5s ease forwards;
    opacity: 0;
}

.chat-msg-user {
    background: rgba(37,99,235,0.15);
    border: 1px solid rgba(37,99,235,0.25);
    color: #fff;
    justify-self: end;
    text-align: right;
}

.chat-msg-assistant {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    color: rgba(255,255,255,0.95);
    justify-self: start;
}

.chat-msg:nth-child(1) { animation-delay: 0.2s; }
.chat-msg:nth-child(2) { animation-delay: 0.4s; }
.chat-msg:nth-child(3) { animation-delay: 0.6s; }
.chat-msg:nth-child(4) { animation-delay: 0.8s; }

@keyframes fadeInMsg {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== Sections - Better spacing ===== */
section { padding: 80px 0; /* 60px → 80px */ }

@media (max-width: 1024px) {
    section { padding: 60px 0; }
}

/* Section Headers */
.section-header { text-align: center; margin-bottom: 60px; /* 50px → 60px */ }
.section-tag { 
    display: inline-block; 
    padding: 8px 20px; /* 6px 16px → 8px 20px */
    background: var(--accent-glow); 
    color: var(--accent); 
    border-radius: var(--radius-full); 
    font-size: 0.92rem; /* 0.85rem → 0.92rem */
    font-weight: 600; 
    margin-bottom: 16px; /* 12px → 16px */
}

.section-title { 
    font-size: 2.8rem; /* 2.4rem → 2.8rem */
    font-weight: 800; 
    margin-bottom: 18px; /* 16px → 18px */
    color: var(--text); 
}

@media (max-width: 1200px) {
    .section-title { font-size: 2.4rem; }
}

@media (max-width: 1024px) {
    .section-title { font-size: 2rem; }
}

.section-subtitle { 
    font-size: 1.15rem; /* 1.05rem → 1.15rem */
    color: var(--text-secondary); 
    max-width: 700px; /* 600px → 700px */
    margin: 0 auto; 
    line-height: 1.8; 
}

@media (max-width: 1024px) {
    .section-subtitle { font-size: 1.05rem; max-width: 600px; }
}

/* ===== Cards Grid - Responsive ===== */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* 4 columns on large screens */
    gap: 28px; /* 24px → 28px */
}

@media (max-width: 1400px) {
    .cards-grid { grid-template-columns: repeat(3, 1fr); gap: 24px; }
}

@media (max-width: 1024px) {
    .cards-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 28px; /* 28px 24px → 32px 28px */
    transition: all var(--transition);
}

.card:hover {
    border-color: var(--accent);
    transform: translateY(-4px); /* -2px → -4px */
    box-shadow: var(--shadow-lg);
}

.card-icon {
    width: 60px; /* 52px → 60px */
    height: 60px;
    border-radius: var(--radius);
    background: var(--accent-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px; /* 16px → 20px */
    font-size: 1.6rem; /* 1.4rem → 1.6rem */
}

.card-title {
    font-size: 1.15rem; /* 1.05rem → 1.15rem */
    font-weight: 700;
    margin-bottom: 12px; /* 10px → 12px */
    color: var(--text);
}

.card-desc {
    font-size: 0.96rem; /* 0.9rem → 0.96rem */
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== Teachers Grid - Enhanced ===== */
.teachers-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

@media (max-width: 1200px) {
    .teachers-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 1024px) {
    .teachers-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}

.teacher-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 24px; /* 28px 20px → 32px 24px */
    text-align: center;
    transition: all var(--transition);
    cursor: pointer;
}

.teacher-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.teacher-card.active {
    border-color: var(--accent);
    background: var(--accent-glow);
}

.teacher-avatar {
    width: 80px; /* 68px → 80px */
    height: 80px;
    border-radius: 50%;
    margin: 0 auto 16px; /* 12px → 16px */
    font-size: 2.4rem; /* 2rem → 2.4rem */
    display: flex;
    align-items: center;
    justify-content: center;
}

.teacher-name {
    font-size: 1.08rem; /* 0.98rem → 1.08rem */
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text);
}

.teacher-desc {
    font-size: 0.92rem; /* 0.85rem → 0.92rem */
    color: var(--text-secondary);
}

/* ===== Utility Classes ===== */
.text-center { text-align: center; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mt-5 { margin-top: 48px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.mb-5 { margin-bottom: 48px; }

/* ===== Footer ===== */
.footer {
    background: var(--bg-secondary);
    padding: 60px 0 30px; /* 50px → 60px */
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px; /* 40px → 48px */
    margin-bottom: 48px; /* 40px → 48px */
}

@media (max-width: 1024px) {
    .footer-grid { 
        grid-template-columns: 1fr 1fr; 
        gap: 32px; 
    }
}

.footer-brand {
    font-size: 1.5rem; /* 1.3rem → 1.5rem */
    font-weight: 800;
    margin-bottom: 14px; /* 12px → 14px */
}

.footer-desc {
    font-size: 0.96rem; /* 0.9rem → 0.96rem */
    color: var(--text-secondary);
    line-height: 1.7;
}

.footer-title {
    font-size: 1.08rem; /* 0.98rem → 1.08rem */
    font-weight: 700;
    margin-bottom: 18px; /* 16px → 18px */
    color: var(--text);
}

.footer-link {
    display: block;
    font-size: 0.95rem; /* 0.88rem → 0.95rem */
    color: var(--text-secondary);
    margin-bottom: 10px; /* 8px → 10px */
}

.footer-link:hover {
    color: var(--accent);
    padding-left: 4px;
}

.footer-bottom {
    padding-top: 28px; /* 24px → 28px */
    border-top: 1px solid var(--border);
    text-align: center;
    font-size: 0.92rem; /* 0.85rem → 0.92rem */
    color: var(--text-muted);
}