@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
    --bg-color: #000000;
    --app-bg: #09090b;
    --text-color: #ffffff;
    --text-secondary: #a1a1aa;
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-hover-bg: rgba(255, 255, 255, 0.08);
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-soft: 0 8px 30px rgba(0, 0, 0, 0.5);
    --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.7);
    --primary-btn: #ffffff;
    --primary-btn-text: #000000;
    --border-radius-sm: 10px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --accent: #e4e4e7;
    --accent-bg: rgba(255, 255, 255, 0.1);
    --accent-highlight: #3b82f6; /* Subtle blue for tags if needed */
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    display: flex;
    justify-content: center;
}

/* Container */
.app-container {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    position: relative;
    background-color: var(--app-bg);
    box-shadow: 0 0 50px rgba(255, 255, 255, 0.02);
    overflow-x: hidden;
}

/* Header & Search */
header {
    padding: 32px 20px 24px;
    position: sticky;
    top: 0;
    background: rgba(9, 9, 11, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    z-index: 10;
}

.brand-container {
    margin-bottom: 24px;
}

h1.brand {
    font-size: 1.75rem;
    font-weight: 800;
    text-align: left;
    margin-bottom: 4px;
    letter-spacing: -0.03em;
    color: var(--text-color);
}

.brand-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-align: left;
}

.search-container {
    position: relative;
}

.search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    width: 20px;
    height: 20px;
    transition: var(--transition);
}

#searchInput {
    width: 100%;
    padding: 16px 16px 16px 48px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-color);
    background-color: var(--card-bg);
    backdrop-filter: blur(8px);
    box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
    outline: none;
}

#searchInput:focus {
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.05), var(--shadow-soft);
    background-color: rgba(255, 255, 255, 0.08);
}

.search-container:focus-within .search-icon {
    color: var(--text-color);
}

#searchInput::placeholder {
    color: #71717a;
}

/* Main Grid - Folders */
main {
    padding: 0 20px 40px;
}

.folder-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 24px;
}

.folder-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius-md);
    padding: 14px;
    box-shadow: var(--shadow-soft);
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.folder-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(255, 255, 255, 0.2);
    background-color: var(--card-hover-bg);
}

.folder-preview-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4px;
    aspect-ratio: 1/1;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    margin-bottom: 14px;
    background-color: #18181b;
}

.folder-preview-item {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.folder-card:hover .folder-preview-item {
    transform: scale(1.05); /* Slight zoom on hover */
}

.folder-empty-slot {
    background-color: #18181b;
    width: 100%;
    height: 100%;
}

.folder-code {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 6px;
    background-color: rgba(255, 255, 255, 0.15);
    display: inline-flex;
    align-items: center;
    padding: 4px 8px;
    border-radius: 6px;
    letter-spacing: 0.5px;
}

.folder-title {
    font-size: 0.9rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--text-color);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    grid-column: 1 / -1;
    background: var(--card-bg);
    border-radius: var(--border-radius-md);
    border: 1px dashed var(--border-color);
}

/* Detail View Modal (Level 2 - Folders) */
.detail-view {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--app-bg);
    z-index: 100;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
}

@media (min-width: 480px) {
    .detail-view {
        position: absolute;
    }
}

.detail-view.active {
    transform: translateX(0);
}

.detail-header {
    padding: 24px 20px 20px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    background: rgba(9, 9, 11, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 10;
}

.back-btn {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    transition: var(--transition);
    flex-shrink: 0;
}

.back-btn:hover {
    background: var(--card-hover-bg);
    transform: translateX(-2px);
}

.back-btn svg {
    width: 20px;
    height: 20px;
}

.detail-header-info {
    margin-left: 16px;
    flex: 1;
}

.detail-code {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 2px;
}

.detail-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-color);
    line-height: 1.3;
}

.detail-content {
    flex: 1;
    overflow-y: auto;
    padding: 24px 20px;
    background: var(--app-bg);
}

.product-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.product-card {
    display: flex;
    background-color: var(--card-bg);
    border-radius: var(--border-radius-md);
    padding: 12px;
    box-shadow: var(--shadow-soft);
    gap: 16px;
    align-items: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(255, 255, 255, 0.2);
    background-color: var(--card-hover-bg);
}

.product-image {
    width: 80px;
    height: 80px;
    border-radius: var(--border-radius-sm);
    object-fit: cover;
    background-color: #18181b;
    flex-shrink: 0;
}

.product-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.product-name {
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 6px;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    color: var(--text-color);
}

.product-price {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-color);
}

/* =========================================
   Product Detail Modal (Level 3 - Slide up)
   ========================================= */
.product-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    align-items: flex-end;
}

@media (min-width: 480px) {
    .product-modal-overlay {
        position: absolute;
    }
}

.product-modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.product-modal-content {
    background-color: #09090b; /* Very dark slate / almost black */
    width: 100%;
    max-height: 90vh;
    border-top-left-radius: 24px;
    border-top-right-radius: 24px;
    transform: translateY(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    border-top: 1px solid var(--border-color);
    box-shadow: 0 -10px 40px rgba(0,0,0,0.5);
}

.product-modal-overlay.active .product-modal-content {
    transform: translateY(0);
}

.pm-header {
    display: flex;
    align-items: center;
    padding: 20px 20px;
    border-bottom: 1px solid var(--border-color);
}

.pm-close-btn {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    cursor: pointer;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    flex-shrink: 0;
    transition: var(--transition);
}
.pm-close-btn:hover {
    background: var(--card-hover-bg);
}
.pm-close-btn svg {
    width: 18px;
    height: 18px;
}

.pm-title {
    flex: 1;
    text-align: center;
    font-weight: 600;
    font-size: 1rem;
    margin-right: 36px; /* offset for close btn */
}

.pm-body {
    flex: 1;
    overflow-y: auto;
    padding: 0 0 20px 0;
}

.pm-img {
    width: 100%;
    aspect-ratio: 1/1;
    object-fit: cover;
    background-color: #18181b;
}

.pm-details-container {
    padding: 20px;
}

.pm-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.pm-badge {
    font-size: 0.7rem;
    font-weight: 700;
    padding: 4px 8px;
    border-radius: 4px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.pm-badge-discount {
    background-color: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.pm-badge-sold {
    background-color: rgba(255, 255, 255, 0.1);
    color: #e4e4e7;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.pm-badge-rating {
    background-color: rgba(234, 179, 8, 0.2);
    color: #fde047;
    border: 1px solid rgba(234, 179, 8, 0.3);
    display: flex;
    align-items: center;
    gap: 4px;
}

.pm-name {
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 12px;
}

.pm-price-row {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 20px;
}

.pm-price {
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
}

.pm-original-price {
    font-size: 1rem;
    color: var(--text-secondary);
    text-decoration: line-through;
}

.pm-desc-title {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: #fff;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

.pm-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.pm-footer {
    padding: 16px 20px 24px;
    border-top: 1px solid var(--border-color);
    background: #09090b;
}

.pm-btn-buy {
    background: var(--primary-btn);
    color: var(--primary-btn-text);
    text-decoration: none;
    padding: 14px 20px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 700;
    text-align: center;
    display: block;
    width: 100%;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.1);
}

.pm-btn-buy:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(255, 255, 255, 0.15);
    background: #e4e4e7;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 4px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}