/* ========================================
   ULTRA LUXURY DESIGN SYSTEM
   NS PHONES - Premium E-Commerce Platform
   ======================================== */

:root {
    /* Dark Luxury Palette */
    --dark-primary: #0a0a0a;
    --dark-secondary: #111111;
    --dark-tertiary: #1a1a1a;
    --dark-elevated: #222222;

    /* Premium Gold Metallic */
    --gold-primary: #d4af37;
    --gold-light: #f4d03f;
    --gold-dark: #b8860b;
    --gold-gradient: linear-gradient(135deg, #d4af37 0%, #f4d03f 50%, #d4af37 100%);
    --gold-shimmer: linear-gradient(90deg, transparent, rgba(244, 208, 63, 0.3), transparent);

    /* Accent Colors */
    --success: #00c853;
    --danger: #ff1744;
    --warning: #ff9100;
    --info: #00d4ff;

    /* Glass Morphism */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-bg-strong: rgba(255, 255, 255, 0.06);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);

    /* Premium Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.6);
    --shadow-gold: 0 4px 24px rgba(212, 175, 55, 0.3);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================
   BASE STYLES & RESET
   ======================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background: var(--dark-primary);
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--dark-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--gold-primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gold-light);
}

/* Selection */
::selection {
    background: var(--gold-primary);
    color: var(--dark-primary);
}

/* ========================================
   UTILITIES
   ======================================== */

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

.text-gradient {
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass-effect {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.premium-shadow {
    box-shadow:
        0 4px 16px rgba(0, 0, 0, 0.4),
        0 0 32px rgba(212, 175, 55, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */

header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(30px) saturate(180%);
    -webkit-backdrop-filter: blur(30px) saturate(180%);
    border-bottom: 1px solid var(--glass-border);
    transition: all var(--transition-smooth);
}

header.scrolled {
    background: rgba(10, 10, 10, 0.95);
    box-shadow: var(--shadow-xl);
    border-bottom-color: rgba(212, 175, 55, 0.2);
}

.header-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 32px;
    font-weight: 900;
    background: var(--gold-gradient);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 3px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all var(--transition-normal);
    animation: shimmer 3s infinite;
    position: relative;
}

.logo:hover {
    transform: scale(1.05);
    filter: brightness(1.2);
}

@keyframes shimmer {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.main-nav {
    display: flex;
    gap: 48px;
    align-items: center;
}

.main-nav a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    letter-spacing: 1px;
    text-transform: uppercase;
    position: relative;
    padding: 8px 0;
    transition: all var(--transition-normal);
}

.main-nav a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gold-gradient);
    transition: width var(--transition-normal);
    box-shadow: 0 0 10px var(--gold-primary);
}

.main-nav a:hover {
    color: var(--gold-light);
    text-shadow: 0 0 20px rgba(212, 175, 55, 0.5);
}

.main-nav a:hover::before {
    width: 100%;
}

.main-nav a.active {
    color: var(--gold-light);
}

.main-nav a.active::before {
    width: 100%;
}

.header-actions {
    display: flex;
    gap: 16px;
    align-items: center;
}

.btn-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--gold-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
}

.btn-icon:hover {
    background: var(--glass-bg-strong);
    border-color: var(--gold-primary);
    box-shadow: var(--shadow-gold);
    transform: translateY(-2px);
}

.btn-icon .badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--danger);
    color: white;
    font-size: 11px;
    font-weight: 700;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(255, 23, 68, 0.5);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gold-primary);
    transition: all var(--transition-normal);
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 100px;
    background: var(--dark-primary);
    z-index: 1;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(212, 175, 55, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 212, 255, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--gold-primary);
    border-radius: 50px;
    color: var(--gold-light);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 24px;
    box-shadow: var(--shadow-gold);
}

.hero h1 {
    font-size: clamp(48px, 8vw, 96px);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 24px;
    background: var(--gold-gradient);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 4s infinite;
}

.hero-subtitle {
    font-size: clamp(18px, 3vw, 24px);
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 40px;
    font-weight: 300;
    letter-spacing: 1px;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
    padding: 16px 40px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all var(--transition-smooth);
    border: none;
    position: relative;
    overflow: hidden;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-primary {
    background: var(--gold-gradient);
    background-size: 200% 200%;
    color: var(--dark-primary);
    box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
    background-position: 100% 0;
    transform: translateY(-3px);
    box-shadow:
        var(--shadow-gold),
        0 0 30px rgba(212, 175, 55, 0.5);
}

.btn-secondary {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 2px solid var(--gold-primary);
    color: var(--gold-light);
}

.btn-secondary:hover {
    background: var(--glass-bg-strong);
    border-color: var(--gold-light);
    transform: translateY(-3px);
    box-shadow: var(--shadow-gold);
}

/* ========================================
   CARDS
   ======================================== */

.card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    transition: left 0.5s;
}

.card:hover::before {
    left: 100%;
}

.card:hover {
    transform: translateY(-8px);
    border-color: rgba(212, 175, 55, 0.3);
    box-shadow:
        var(--shadow-xl),
        0 0 40px rgba(212, 175, 55, 0.1);
}

/* ========================================
   PRODUCT CARDS
   ======================================== */

.product-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-smooth);
    cursor: pointer;
    position: relative;
}

.product-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--radius-lg);
    padding: 2px;
    background: linear-gradient(135deg, var(--gold-primary), transparent, var(--gold-primary));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.product-card:hover::after {
    opacity: 1;
}

.product-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow:
        var(--shadow-xl),
        0 0 50px rgba(212, 175, 55, 0.15);
}

.product-image {
    width: 100%;
    height: 280px;
    object-fit: cover;
    background: var(--dark-tertiary);
    transition: transform var(--transition-slow);
}

.product-card:hover .product-image {
    transform: scale(1.1);
}

.product-info {
    padding: 20px;
    position: relative;
    z-index: 1;
    background: linear-gradient(to top, var(--dark-primary) 0%, transparent 100%);
}

.product-brand {
    font-size: 11px;
    font-weight: 600;
    color: var(--gold-primary);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.product-name {
    font-size: 18px;
    font-weight: 700;
    color: white;
    margin-bottom: 12px;
    line-height: 1.3;
}

.product-price {
    font-size: 24px;
    font-weight: 800;
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.product-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--gold-gradient);
    color: var(--dark-primary);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: var(--shadow-gold);
}

/* ========================================
   FORMS
   ======================================== */

.form-container {
    max-width: 600px;
    margin: 0 auto;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: var(--shadow-xl);
}

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

.form-group label {
    display: block;
    color: var(--gold-light);
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 16px 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: white;
    font-size: 15px;
    transition: all var(--transition-normal);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--gold-primary);
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.2);
    background: var(--glass-bg-strong);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

/* ========================================
   TICKER
   ======================================== */

.ticker-wrap {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(90deg, var(--dark-primary) 0%, var(--dark-secondary) 50%, var(--dark-primary) 100%);
    border-top: 1px solid var(--glass-border);
    overflow: hidden;
    z-index: 999;
}

.ticker {
    display: flex;
    animation: ticker 30s linear infinite;
}

.ticker-item {
    flex-shrink: 0;
    padding: 12px 32px;
    color: var(--gold-light);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 1px;
    white-space: nowrap;
    border-right: 1px solid var(--glass-border);
}

@keyframes ticker {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ========================================
   SECTIONS
   ======================================== */

section {
    padding: 100px 0;
    position: relative;
    background: var(--dark-primary);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    padding: 8px 20px;
    background: var(--glass-bg);
    border: 1px solid var(--gold-primary);
    border-radius: 50px;
    color: var(--gold-light);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 900;
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.6);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   GRID SYSTEM
   ======================================== */

.grid {
    display: grid;
    gap: 30px;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ========================================
   FOOTER
   ======================================== */

footer {
    background: var(--dark-secondary);
    border-top: 1px solid var(--glass-border);
    padding: 80px 0 30px;
    margin-bottom: 50px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.footer-logo {
    font-size: 28px;
    font-weight: 900;
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
}

.footer h4 {
    color: var(--gold-light);
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 14px;
    transition: all var(--transition-normal);
}

.footer-links a:hover {
    color: var(--gold-light);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--glass-border);
    color: rgba(255, 255, 255, 0.4);
    font-size: 13px;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 1024px) {
    .main-nav {
        gap: 32px;
    }

    .hero h1 {
        font-size: 64px;
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background: var(--dark-secondary);
        flex-direction: column;
        padding: 100px 40px;
        gap: 24px;
        transition: right var(--transition-smooth);
        box-shadow: var(--shadow-xl);
    }

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

    .hero {
        padding-top: 120px;
        min-height: auto;
        padding-bottom: 60px;
    }

    .hero h1 {
        font-size: 48px;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    section {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .logo {
        font-size: 24px;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .form-container {
        padding: 24px;
    }

    .product-image {
        height: 220px;
    }
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease forwards;
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

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

.text-center {
    text-align: center;
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

.hidden {
    display: none;
}