/* ==================== DESIGN TOKENS ==================== */
:root {
    --bg-dark: #080d1a;
    --bg-darker: #050810;
    --bg-card: #0f1829;
    --bg-elevated: #1a2540;
    --border-color: #1e2d4a;
    --border-light: #2a3f5e;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --accent: #ec4899;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --navbar-height: 68px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-glow: 0 0 40px rgba(99,102,241,0.15);
    --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

html::-webkit-scrollbar,
body::-webkit-scrollbar,
*::-webkit-scrollbar { display: none; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 'Roboto', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Background grid texture */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(99,102,241,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99,102,241,0.025) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: 0;
}

/* ==================== NAVBAR ==================== */
.navbar {
    background: rgba(8, 13, 26, 0.85);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 200;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    height: var(--navbar-height);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    gap: 2rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
    flex-shrink: 0;
    transition: var(--transition);
    letter-spacing: -0.3px;
}

.nav-logo:hover { opacity: 0.85; }

.nav-logo span {
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-logo .logo-icon {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-sm);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.25rem;
    flex: 1;
    align-items: center;
}

.nav-link {
    display: inline-block;
    padding: 0.5rem 0.875rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
}

.nav-link:hover { color: var(--text-primary); background: rgba(255,255,255,0.06); }
.nav-link.active { color: var(--primary-light); background: rgba(99,102,241,0.12); }

.nav-auth {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.user-info {
    display: flex !important;
    align-items: center;
    gap: 0.75rem;
}

.user-info span {
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    font-size: 0.9rem;
}

.btn-auth {
    padding: 0.5rem 1.25rem;
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.875rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    letter-spacing: 0.01em;
}

.btn-auth:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(99,102,241,0.4);
}

.btn-logout {
    padding: 0.4rem 0.875rem;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.8rem;
    background: transparent;
    color: var(--text-secondary);
}

.btn-logout:hover {
    border-color: var(--error);
    color: var(--error);
    background: rgba(239,68,68,0.08);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-primary);
    padding: 0.4rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.menu-toggle:hover { background: rgba(255,255,255,0.08); }

/* ==================== MAIN CONTENT ==================== */
.main-content {
    max-width: 1280px;
    margin: 0 auto;
    padding: 5rem 2rem;
    position: relative;
    z-index: 1;
}

/* ==================== HERO ==================== */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
    margin-bottom: 8rem;
    padding: 5rem 4rem;
    background: linear-gradient(135deg, rgba(99,102,241,0.06) 0%, rgba(139,92,246,0.04) 100%);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -60px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(99,102,241,0.15), transparent 70%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -40px;
    left: -40px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(139,92,246,0.1), transparent 70%);
    pointer-events: none;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(99,102,241,0.12);
    border: 1px solid rgba(99,102,241,0.25);
    color: var(--primary-light);
    font-size: 0.78rem;
    font-weight: 600;
    padding: 0.35rem 0.875rem;
    border-radius: 999px;
    margin-bottom: 1.5rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.hero-badge::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--success);
    border-radius: 50%;
    box-shadow: 0 0 6px var(--success);
    animation: pulse 2s ease infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-content h1 {
    font-size: clamp(2rem, 3.5vw, 3.25rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.25rem;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

.hero-content h1 span {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.7;
    max-width: 480px;
}

.hero-buttons {
    display: flex;
    gap: 0.875rem;
    flex-wrap: wrap;
}

.hero-graphic {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.hero-graphic svg {
    width: 100%;
    max-width: 400px;
    height: auto;
    filter: drop-shadow(0 20px 60px rgba(99,102,241,0.2));
}

/* ==================== BUTTONS ==================== */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    letter-spacing: 0.01em;
    position: relative;
    overflow: hidden;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 16px rgba(99,102,241,0.25);
}

.btn-primary:hover {
    box-shadow: 0 8px 24px rgba(99,102,241,0.45);
}

.btn-secondary {
    background: rgba(255,255,255,0.06);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--primary-light);
    color: var(--primary-light);
}

.btn-large { padding: 0.875rem 2rem; font-size: 1rem; }
.btn-block { width: 100%; justify-content: center; }

/* ==================== FEATURES ==================== */
.section-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section-label {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary-light);
    background: rgba(99,102,241,0.1);
    border: 1px solid rgba(99,102,241,0.2);
    padding: 0.3rem 0.875rem;
    border-radius: 999px;
    margin-bottom: 1rem;
}

.section-header h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.025em;
    margin-bottom: 0.75rem;
}

.section-header p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 520px;
    margin: 0 auto;
}

.features { margin-bottom: 8rem; }

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem 1.75rem;
    text-align: left;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(99,102,241,0.3), transparent);
    opacity: 0;
    transition: var(--transition);
}

.feature-card:hover {
    border-color: rgba(99,102,241,0.35);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.3), 0 0 0 1px rgba(99,102,241,0.1);
}

.feature-card:hover::before { opacity: 1; }

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, rgba(99,102,241,0.18), rgba(139,92,246,0.12));
    color: var(--primary-light);
    flex-shrink: 0;
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background: linear-gradient(135deg, rgba(99,102,241,0.3), rgba(139,92,246,0.25));
    transform: scale(1.05);
}

.feature-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ==================== STATS ==================== */
.stats {
    margin-bottom: 8rem;
    padding: 3.5rem 4rem;
    background: linear-gradient(135deg, rgba(99,102,241,0.07) 0%, rgba(139,92,246,0.05) 100%);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.stats::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(99,102,241,0.08), transparent);
    pointer-events: none;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    position: relative;
    z-index: 1;
}

.stat-card {
    text-align: center;
    padding: 1rem;
}

.stat-card h3 {
    font-size: 2.75rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 0.5rem;
    letter-spacing: -0.03em;
}

.stat-card p, .stat-card a {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    display: block;
}

.stat-card a:hover { color: var(--primary-light); }

/* ==================== CTA ==================== */
.cta {
    margin-bottom: 4rem;
}

.cta-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 4rem;
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.cta-content::before {
    content: '';
    position: absolute;
    top: -80px;
    left: 50%;
    transform: translateX(-50%);
    width: 400px;
    height: 200px;
    background: radial-gradient(ellipse, rgba(99,102,241,0.12), transparent 70%);
    pointer-events: none;
}

.cta-content h2 {
    font-size: clamp(1.5rem, 2.5vw, 2.25rem);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    letter-spacing: -0.025em;
    position: relative;
}

.cta-content p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 2rem;
    position: relative;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
}

.cta-divider {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.cta-mini {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
}

.cta-mini:hover {
    border-color: rgba(99,102,241,0.35);
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.cta-mini h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.cta-mini p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1.25rem;
}

/* ==================== AUTH MODAL ==================== */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(5, 8, 20, 0.85);
    backdrop-filter: blur(12px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal.show { display: flex; }

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    width: 100%;
    max-width: 420px;
    position: relative;
    box-shadow: 0 24px 80px rgba(0,0,0,0.5);
}

.close {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    background: rgba(255,255,255,0.06);
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.close:hover { background: rgba(239,68,68,0.15); color: var(--error); }

.auth-container { display: flex; flex-direction: column; gap: 1.25rem; }

.auth-toggle {
    display: flex;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 4px;
    gap: 4px;
}

.tab-btn {
    flex: 1;
    padding: 0.5rem;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 600;
    transition: var(--transition);
}

.tab-btn.active {
    background: var(--bg-elevated);
    color: var(--text-primary);
}

.auth-form { display: none; flex-direction: column; gap: 0.875rem; }
.auth-form.active { display: flex; }
.auth-form h2 { font-size: 1.35rem; font-weight: 800; color: var(--text-primary); letter-spacing: -0.02em; }

.auth-input {
    padding: 0.75rem 1rem;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: var(--transition);
    outline: none;
    width: 100%;
}

.auth-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.12);
}

.auth-input::placeholder { color: var(--text-muted); }

/* ==================== CAPTCHA MODAL ==================== */
.captcha-modal {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(5, 8, 20, 0.85);
    backdrop-filter: blur(12px);
    z-index: 9999;
    padding: 1rem;
}

.captcha-modal.show { display: flex; }

.captcha-modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 2rem;
    width: min(100%, 420px);
    position: relative;
    box-shadow: 0 24px 80px rgba(0,0,0,0.5);
}

.captcha-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    border: none;
    background: rgba(255,255,255,0.06);
    color: var(--text-secondary);
    font-size: 1.1rem;
    cursor: pointer;
    border-radius: var(--radius-sm);
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.captcha-close:hover { background: rgba(239,68,68,0.15); color: var(--error); }

/* ==================== FOOTER ==================== */
.footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: 4rem 2rem 2rem;
    position: relative;
    z-index: 1;
}

.footer-content {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand { display: flex; flex-direction: column; gap: 1rem; }

.footer-brand .footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--text-primary);
}

.footer-brand .footer-logo img {
    width: 28px;
    height: 28px;
    border-radius: 6px;
}

.footer-brand .footer-logo span {
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.875rem;
    line-height: 1.6;
    max-width: 240px;
}

.footer-section h4 {
    color: var(--text-primary);
    margin-bottom: 1.25rem;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.footer-section ul { list-style: none; }
.footer-section ul li { margin-bottom: 0.625rem; }

.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.875rem;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
}

.footer-section a:hover { color: var(--primary-light); }

.footer-bottom {
    max-width: 1280px;
    margin: 0 auto;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.footer-bottom .footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-bottom .footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.8rem;
    transition: var(--transition);
}

.footer-bottom .footer-links a:hover { color: var(--primary-light); }

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) {
    .hero { grid-template-columns: 1fr; gap: 3rem; padding: 3rem; }
    .hero-graphic { display: none; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-content { grid-template-columns: 1fr 1fr; }
    .cta-divider { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-container { padding: 0 1.25rem; }
    .nav-menu { display: none; }
    .nav-menu.mobile-active {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: var(--navbar-height);
        left: 0;
        right: 0;
        background: rgba(8,13,26,0.97);
        border-bottom: 1px solid var(--border-color);
        gap: 0.25rem;
        padding: 1rem;
        z-index: 150;
        backdrop-filter: blur(16px);
    }
    .nav-menu.mobile-active li { width: 100%; }
    .nav-menu.mobile-active .nav-link { display: block; padding: 0.875rem 1rem; width: 100%; }
    .nav-auth { display: none; }
    .nav-auth.mobile-active {
        display: flex;
        flex-direction: column;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: rgba(8,13,26,0.97);
        border-top: 1px solid var(--border-color);
        padding: 1rem;
        z-index: 150;
        gap: 0.75rem;
        backdrop-filter: blur(16px);
    }
    .nav-auth.mobile-active .btn-auth,
    .nav-auth.mobile-active .btn-logout { width: 100%; justify-content: center; }
    .menu-toggle { display: flex; align-items: center; justify-content: center; }
    .main-content { padding: 3rem 1.25rem 8rem; }
    .hero { padding: 2rem 1.5rem; margin-bottom: 4rem; }
    .stats { padding: 2.5rem 1.5rem; margin-bottom: 4rem; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
    .cta-content { padding: 2.5rem 1.5rem; }
    .features-grid { gap: 1rem; }
    .footer-content { grid-template-columns: 1fr; gap: 2rem; }
    .footer-brand p { max-width: 100%; }
    .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
    .hero { padding: 1.75rem 1.25rem; }
    .hero-buttons { flex-direction: column; }
    .btn { width: 100%; justify-content: center; }
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 1rem; }
    .stat-card h3 { font-size: 2rem; }
    .cta-content { padding: 2rem 1.25rem; }
    .cta-buttons { flex-direction: column; }
    .modal-content { padding: 1.75rem 1.25rem; max-width: 100%; }
    .features-grid { grid-template-columns: 1fr; }
    .section-header h2 { font-size: 1.6rem; }
}

/* ==================== MISC ==================== */
.commits {
    text-decoration: none;
    cursor: pointer;
    color: var(--warning);
    opacity: 0.8;
    transition: var(--transition);
}
.commits:hover { opacity: 1; }