/* 2AData Shared Styles — used across all standard pages */
/* Last updated: 2026-02-17 */

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

/* CSS Variables */
:root {
    --primary: #0f172a;
    --primary-light: #1e293b;
    --primary-dark: #020617;
    --accent: #3b82f6;
    --accent-light: #60a5fa;
    --accent-dark: #2563eb;
    --secondary: #8b5cf6;
    --success: #10b981;
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --gradient-primary: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    --gradient-accent: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

/* Base */
html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--gray-700);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4 { line-height: 1.2; color: var(--gray-900); }
.text-gradient {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-primary {
    background: var(--gradient-accent);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
}

.btn-secondary {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent);
}

.btn-secondary:hover {
    background: rgba(59, 130, 246, 0.2);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--gray-200);
    color: var(--gray-700);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-1px);
}

.btn-outline-light {
    background: transparent;
    border: 2px solid rgba(255,255,255,0.3);
    color: var(--white);
}

.btn-outline-light:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.6);
}

.btn-lg {
    padding: 18px 36px;
    font-size: 1.0625rem;
}

.nav-cta { margin-left: 16px; }

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-lg);
    padding: 12px 0;
}

.navbar.scrolled .nav-link { color: var(--gray-700); }
.navbar.scrolled .nav-link:hover { color: var(--accent); }
.navbar.scrolled .nav-link.active { color: var(--accent); background: rgba(59, 130, 246, 0.08); }
.navbar.scrolled .logo-light { display: none !important; }
.navbar.scrolled .logo-dark { display: block !important; }
.navbar.scrolled .mobile-menu-btn span { background: var(--gray-700); }

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 10px 18px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: rgba(255,255,255,0.85);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--white);
    background: rgba(255,255,255,0.1);
}

.nav-link.active {
    color: var(--white);
    background: rgba(255,255,255,0.12);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 100;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    margin: 6px 0;
    transition: all 0.3s ease;
}

/* Page Hero (shared across subpages) */
.page-hero {
    padding: 160px 0 80px;
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 60%);
}

.page-hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.page-hero h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    color: var(--white);
    margin-bottom: 20px;
    font-weight: 800;
}

.page-hero p {
    font-size: 1.25rem;
    color: rgba(255,255,255,0.8);
    line-height: 1.8;
}

/* Forms */
.form-group { margin-bottom: 24px; }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

label {
    display: block;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 8px;
    font-size: 0.9375rem;
}

input, textarea, select {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition-fast);
    background: var(--white);
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

textarea {
    min-height: 140px;
    resize: vertical;
}

.btn-submit {
    width: 100%;
    background: var(--gradient-accent);
    color: var(--white);
    padding: 16px 32px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: 0 4px 14px rgba(59, 130, 246, 0.4);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
}

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.success-message, .error-message {
    padding: 16px 20px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    display: none;
    font-weight: 500;
}

.success-message {
    background: rgba(16, 185, 129, 0.1);
    color: #047857;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.error-message {
    background: rgba(239, 68, 68, 0.1);
    color: #b91c1c;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.success-message.show, .error-message.show { display: block; }

/* Footer */
.footer {
    background: var(--primary-dark);
    color: var(--white);
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 64px;
}

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--white);
}

.footer-brand p {
    color: rgba(255,255,255,0.6);
    font-size: 0.9375rem;
    line-height: 1.7;
}

.footer-column h4 {
    font-size: 1rem;
    margin-bottom: 24px;
    color: var(--white);
}

.footer-column a {
    display: block;
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    padding: 8px 0;
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.footer-column a:hover { color: var(--accent-light); }

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    color: rgba(255,255,255,0.5);
    font-size: 0.875rem;
}

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

.footer-legal a {
    color: rgba(255,255,255,0.5);
    text-decoration: none;
    font-size: 0.875rem;
}

.footer-legal a:hover { color: var(--white); }

/* Shared Responsive */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(15, 23, 42, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px;
        gap: 8px;
        border-top: 1px solid rgba(255,255,255,0.1);
        box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    }

    .nav-links.active { display: flex; }

    .nav-links .nav-link {
        padding: 14px 20px;
        border-radius: 8px;
        text-align: center;
    }

    .nav-links .nav-cta {
        margin-left: 0;
        margin-top: 10px;
    }

    .mobile-menu-btn { display: block; }

    .form-row { grid-template-columns: 1fr; }

    .footer-grid { grid-template-columns: 1fr; }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}