/* ==========================================================
   EnjungShop - Modern Design System & Styles
   ========================================================== */

:root {
    --bg-main: #0b0f19;
    --bg-surface: #111827;
    --bg-card: #1f2937;
    --bg-card-hover: #283548;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-highlight: rgba(99, 102, 241, 0.3);
    
    --text-main: #f9fafb;
    --text-muted: #9ca3af;
    --text-dim: #6b7280;

    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.25);
    
    --accent: #10b981;
    --accent-glow: rgba(16, 185, 129, 0.25);
    
    --danger: #ef4444;
    --warning: #f59e0b;

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 9999px;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
}

/* Reset & Basics */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

/* Header & Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 48px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-main);
    font-weight: 700;
    font-size: 22px;
    letter-spacing: -0.5px;
}

.brand-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), #a855f7);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.nav-links {
    display: flex;
    gap: 16px;
    align-items: center;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
}

.nav-link:hover {
    color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.05);
}

/* Hero Section */
.hero {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 56px auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(99, 102, 241, 0.1);
    color: #a5b4fc;
    border: 1px solid var(--border-highlight);
    padding: 6px 16px;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 16px;
    background: linear-gradient(180deg, #ffffff 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: clamp(16px, 2vw, 18px);
    color: var(--text-muted);
    line-height: 1.6;
}

/* Filter Tags */
.filter-tabs {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.filter-btn {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 8px 18px;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    box-shadow: 0 4px 12px var(--primary-glow);
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 28px;
    margin-bottom: 80px;
}

/* Product Card */
.card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    position: relative;
}

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

.card-media {
    height: 180px;
    background: linear-gradient(135deg, #1e1b4b 0%, #0f172a 100%);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--border-color);
    overflow: hidden;
}

.card-media-badge {
    background: rgba(17, 24, 39, 0.75);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #e0e7ff;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.card-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.card-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-main);
    line-height: 1.3;
}

.card-desc {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 20px;
    flex: 1;
}

.card-features {
    list-style: none;
    margin-bottom: 24px;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.card-features li {
    font-size: 13px;
    color: #cbd5e1;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.card-features li svg {
    color: var(--accent);
    flex-shrink: 0;
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

.price-tag {
    display: flex;
    flex-direction: column;
}

.price-label {
    font-size: 11px;
    text-transform: uppercase;
    color: var(--text-dim);
    font-weight: 600;
}

.price-value {
    font-size: 24px;
    font-weight: 800;
    color: #ffffff;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--primary);
    color: #ffffff;
    box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-accent {
    background: var(--accent);
    color: #ffffff;
    box-shadow: 0 4px 14px var(--accent-glow);
}

.btn-accent:hover {
    background: #059669;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-danger {
    background: var(--danger);
    color: #ffffff;
}

.btn-danger:hover {
    background: #dc2626;
}

/* Modal Checkout & Detail */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    padding: 20px;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-box {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 580px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 32px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transform: scale(0.95);
    transition: var(--transition);
}

.modal-overlay.active .modal-box {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 24px;
}

.modal-title {
    font-size: 22px;
    font-weight: 700;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 24px;
    cursor: pointer;
    line-height: 1;
    padding: 4px;
}

.modal-close:hover {
    color: var(--text-main);
}

/* Success Download Floating / Box */
.download-success-card {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(6, 78, 59, 0.3) 100%);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--radius-md);
    padding: 24px;
    text-align: center;
    margin-top: 20px;
}

.floating-download-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: linear-gradient(135deg, #10b981, #059669);
    color: #ffffff;
    padding: 16px 28px;
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: 700;
    box-shadow: 0 12px 30px rgba(16, 185, 129, 0.5);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 99999;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.floating-download-btn:hover {
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 16px 36px rgba(16, 185, 129, 0.6);
}

/* Empty & Loading States */
.state-box {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 16px auto;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Footer */
footer {
    border-top: 1px solid var(--border-color);
    padding: 40px 0;
    text-align: center;
    color: var(--text-dim);
    font-size: 14px;
}

/* Custom Page & Product Landing Full View */
.custom-landing-view {
    min-height: 100vh;
    background: #ffffff;
    color: #111827;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
    }
    .products-grid {
        grid-template-columns: 1fr;
    }
    .modal-box {
        padding: 20px;
    }
    .floating-download-btn {
        bottom: 20px;
        right: 20px;
        padding: 12px 20px;
        font-size: 14px;
    }
}