/**
 * SHANHAY STUDIO — LUXURY LIGHT DESIGN SYSTEM
 * Premium Alabaster White & Royal Polished Gold
 */

:root {
    /* Base Fonts */
    --font-heading: 'Cinzel', -apple-system, BlinkMacSystemFont, 'Segoe UI', serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);

    /* Pure Luxury Light Palette */
    --bg-base: #FFFFFF;
    --bg-surface: #F8FAFC;
    --bg-card: #FFFFFF;
    --bg-card-hover: #FFFFFF;
    --bg-glass: rgba(255, 255, 255, 0.95);

    --border-subtle: #E2E8F0;
    --border-gold: rgba(217, 119, 6, 0.3);
    --border-gold-glow: rgba(217, 119, 6, 0.5);

    --gold-primary: #D97706;
    --gold-bright: #B45309;
    --gold-deep: #92400E;
    --gold-gradient: linear-gradient(135deg, #F59E0B 0%, #D97706 50%, #B45309 100%);
    --gold-btn-shadow: 0 8px 24px rgba(217, 119, 6, 0.25);

    --accent-cyan: #0284C7;
    --accent-emerald: #059669;
    --accent-crimson: #DC2626;

    --text-pure: #0F172A;
    --text-primary: #1E293B;
    --text-secondary: #475569;
    --text-muted: #64748B;

    --header-bg: rgba(255, 255, 255, 0.95);
    --card-shadow: 0 10px 30px rgba(15, 23, 42, 0.05), 0 1px 3px rgba(15, 23, 42, 0.03);
    --glow-effect: 0 8px 25px rgba(217, 119, 6, 0.1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    background: #FFFFFF;
    background-image: 
        radial-gradient(circle at 50% 0%, rgba(217, 119, 6, 0.03) 0%, transparent 40%),
        radial-gradient(circle at 90% 50%, rgba(2, 132, 199, 0.02) 0%, transparent 40%);
    background-attachment: fixed;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-pure);
    font-weight: 700;
    line-height: 1.25;
}

p {
    line-height: 1.7;
    color: var(--text-secondary);
}

a {
    color: var(--gold-primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--gold-bright);
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-wide {
    width: 100%;
    max-width: 1380px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 13px 28px;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-decoration: none;
    text-align: center;
}

.btn-primary {
    background: var(--gold-gradient);
    color: #FFFFFF !important;
    box-shadow: var(--gold-btn-shadow);
    font-weight: 800;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(217, 119, 6, 0.35);
    color: #FFFFFF !important;
}

.btn-secondary {
    background: #FFFFFF;
    color: var(--text-pure) !important;
    border: 1px solid var(--border-subtle);
    box-shadow: 0 2px 6px rgba(0,0,0,0.03);
}

.btn-secondary:hover {
    border-color: var(--gold-primary);
    color: var(--gold-primary) !important;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.06);
}

.btn-cyan {
    background: linear-gradient(135deg, #0284C7, #0369A1);
    color: #FFFFFF !important;
    font-weight: 800;
}

.btn-cyan:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(2, 132, 199, 0.3);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 12px;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 15px;
    letter-spacing: 0.05em;
}

.btn-block {
    width: 100%;
}

/* Cards */
.glass-card {
    background: #FFFFFF;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 32px;
    transition: var(--transition);
    box-shadow: var(--card-shadow);
}

.glass-card:hover {
    border-color: var(--border-gold);
    box-shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--header-bg);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-subtle);
    padding: 14px 0;
    transition: var(--transition);
}

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

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

.brand-logo-img {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--gold-primary);
    box-shadow: 0 2px 10px rgba(217, 119, 6, 0.2);
}

.logo-text-main {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 0.06em;
    color: var(--text-pure);
    text-transform: uppercase;
}

.logo-tagline {
    font-size: 9px;
    letter-spacing: 0.15em;
    color: var(--gold-primary);
    text-transform: uppercase;
    font-weight: 700;
}

.nav-menu {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 22px;
}

.nav-link {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
    color: var(--gold-primary);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-pure);
    font-size: 24px;
    cursor: pointer;
}

/* Alerts */
.alert {
    padding: 16px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.alert-success {
    background: #ECFDF5;
    border: 1px solid #A7F3D0;
    color: #065F46;
}

.alert-error {
    background: #FEF2F2;
    border: 1px solid #FECACA;
    color: #991B1B;
}

.alert-warning {
    background: #FFFBEB;
    border: 1px solid #FDE68A;
    color: #92400E;
}

.alert-info {
    background: #F0F9FF;
    border: 1px solid #BAE6FD;
    color: #075985;
}

/* Form Controls */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    background: #FFFFFF;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-pure);
    font-family: var(--font-sans);
    font-size: 14px;
    transition: var(--transition);
    outline: none;
}

.form-control:focus {
    border-color: var(--gold-primary);
    box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.15);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border-radius: var(--radius-full);
}

.badge-gold {
    background: #FEF3C7;
    color: #B45309;
    border: 1px solid #FDE68A;
}

.badge-cyan {
    background: #E0F2FE;
    color: #0369A1;
    border: 1px solid #BAE6FD;
}

.badge-green {
    background: #DCFCE7;
    color: #15803D;
    border: 1px solid #BBF7D0;
}

.badge-red {
    background: #FEE2E2;
    color: #B91C1C;
    border: 1px solid #FECACA;
}

/* Footer */
.site-footer {
    background: #F8FAFC;
    border-top: 1px solid var(--border-subtle);
    padding: 60px 0 30px;
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 48px;
}

.footer-col h4 {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-pure);
    margin-bottom: 20px;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 13px;
}

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

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 24px;
    border-top: 1px solid var(--border-subtle);
    font-size: 13px;
    color: var(--text-muted);
}

@media (max-width: 992px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        border-bottom: 1px solid var(--border-subtle);
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        gap: 16px;
    }
    .nav-menu.open {
        display: flex;
    }
    .mobile-menu-toggle {
        display: block;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 600px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

/* Modal Overlay & Popup Styling */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    z-index: 9999;
    align-items: center;
    justify-content: center;
}

.modal-overlay.active {
    display: flex !important;
}

.modal-box {
    position: relative;
    width: 90%;
    max-width: 900px;
    background: #000000;
    border-radius: 12px;
    border: 1px solid var(--border-gold);
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.6);
}

.modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(0, 0, 0, 0.6);
    color: #FFFFFF;
    border: 1px solid rgba(255, 255, 255, 0.2);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 14px;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--gold-primary);
    color: #FFFFFF;
}