:root {
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-bg-hover: rgba(255, 255, 255, 0.2);
    --glass-bg-active: rgba(255, 255, 255, 0.3);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-border-hover: rgba(255, 255, 255, 0.4);
    --glass-blur: blur(20px);
    --glass-blur-sm: blur(10px);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 4px 15px rgba(255, 255, 255, 0.2);
    --text-primary: #fff;
    --text-secondary: rgba(255, 255, 255, 0.8);
    --text-muted: rgba(255, 255, 255, 0.7);
    --accent-gold: #ffd700;
    --radius-lg: 20px;
    --radius-md: 16px;
    --radius-sm: 10px;
    --radius-pill: 25px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Malgun Gothic', 'Apple SD Gothic Neo', sans-serif;
    background: url('/images/background.webp') no-repeat center center fixed;
    background-size: cover;
    min-height: 100vh;
    color: var(--text-secondary);
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: -1;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Glass Effect Mixin */
.glass {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow);
}

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

/* Header */
header {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    padding: 20px 0;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--shadow);
}

header h1 {
    color: var(--text-primary);
    text-align: center;
    font-size: 2em;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

/* Navigation */
nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 15px;
    flex-wrap: wrap;
}

nav a {
    color: var(--text-primary);
    text-decoration: none;
    padding: 10px 25px;
    border-radius: var(--radius-pill);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: var(--glass-blur-sm);
    -webkit-backdrop-filter: var(--glass-blur-sm);
    transition: var(--transition);
    border: 1px solid var(--glass-border);
}

nav a:hover, nav a.active {
    background: var(--glass-bg-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
    border-color: var(--glass-border-hover);
}

/* Section Card */
.section {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-lg);
    padding: 25px;
    margin-bottom: 30px;
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow);
}

.section h2 {
    color: var(--text-primary);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--glass-border);
}

/* Table */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

th, td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

th {
    background: var(--glass-bg);
    color: var(--text-primary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85em;
    letter-spacing: 1px;
}

tr:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Typography */
.price {
    color: var(--accent-gold);
    font-weight: bold;
}

.seller {
    color: var(--text-secondary);
}

.item-name {
    color: var(--text-primary);
    font-weight: 500;
}

.item-cell {
    display: flex;
    align-items: center;
    gap: 12px;
}

.item-icon {
    width: 32px;
    height: 32px;
    image-rendering: pixelated;
    border-radius: 4px;
    background: rgba(0, 0, 0, 0.3);
    padding: 2px;
    flex-shrink: 0;
}

/* Search Box */
.search-box {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    align-items: center;
}

.search-box select,
.search-box input {
    padding: 12px 20px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur-sm);
    -webkit-backdrop-filter: var(--glass-blur-sm);
    color: var(--text-primary);
    font-size: 1em;
    min-width: 200px;
    transition: var(--transition);
}

.search-box select:focus,
.search-box input:focus {
    outline: none;
    border-color: var(--glass-border-hover);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
}

.search-box button {
    padding: 12px 30px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(255, 255, 255, 0.3);
    background: var(--glass-bg-hover);
    backdrop-filter: var(--glass-blur-sm);
    -webkit-backdrop-filter: var(--glass-blur-sm);
    color: var(--text-primary);
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
}

.search-box button:hover {
    transform: translateY(-2px);
    background: var(--glass-bg-active);
    box-shadow: var(--shadow-sm);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    padding: 20px;
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.stat-card h3 {
    color: var(--text-secondary);
    margin-bottom: 10px;
    font-size: 0.9em;
}

.stat-card .value {
    color: var(--text-primary);
    font-size: 1.8em;
    font-weight: bold;
}

/* Utilities */
.no-data {
    text-align: center;
    padding: 40px;
    color: var(--text-muted);
    font-style: italic;
}

.refresh-info {
    text-align: right;
    font-size: 0.85em;
    color: var(--text-muted);
    margin-bottom: 15px;
}

.description {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.info-list {
    color: var(--text-secondary);
    line-height: 2;
}

/* Badge */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8em;
    font-weight: 500;
}

.badge-price {
    background: rgba(255, 215, 0, 0.2);
    color: var(--accent-gold);
    border: 1px solid rgba(255, 215, 0, 0.3);
}

.badge-count {
    background: rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    color: var(--text-muted);
    font-size: 0.9em;
    margin-top: 40px;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
    padding: 15px 0;
}

.page-btn {
    padding: 8px 14px;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur-sm);
    -webkit-backdrop-filter: var(--glass-blur-sm);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.9em;
    transition: var(--transition);
}

.page-btn:hover:not(:disabled) {
    background: var(--glass-bg-hover);
    transform: translateY(-1px);
}

.page-btn.active {
    background: var(--glass-bg-active);
    border-color: var(--glass-border-hover);
    font-weight: bold;
}

.page-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.page-dots {
    color: var(--text-muted);
    padding: 0 5px;
}

/* Responsive Table Wrapper */
.table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* Hide on mobile */
.hide-mobile {
    display: table-cell;
}

/* Responsive - Tablet */
@media (max-width: 1024px) {
    .container {
        padding: 15px;
    }

    .section {
        padding: 20px;
        border-radius: var(--radius-md);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    th, td {
        padding: 12px 10px;
    }
}

/* Responsive - Mobile */
@media (max-width: 768px) {
    :root {
        --radius-lg: 16px;
        --radius-md: 12px;
    }

    .container {
        padding: 10px;
    }

    /* Header */
    header {
        padding: 15px 0;
        margin-bottom: 20px;
    }

    header h1 {
        font-size: 1.5em;
    }

    /* Navigation */
    nav {
        gap: 8px;
        margin-top: 12px;
    }

    nav a {
        padding: 8px 16px;
        font-size: 0.85em;
    }

    /* Section */
    .section {
        padding: 15px;
        margin-bottom: 20px;
        border-radius: var(--radius-md);
    }

    .section h2 {
        font-size: 1.1em;
        margin-bottom: 15px;
    }

    /* Stats Grid */
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
        margin-bottom: 20px;
    }

    .stat-card {
        padding: 15px;
        border-radius: var(--radius-sm);
    }

    .stat-card h3 {
        font-size: 0.8em;
    }

    .stat-card .value {
        font-size: 1.5em;
    }

    /* Table */
    table {
        font-size: 0.85em;
    }

    th, td {
        padding: 10px 8px;
    }

    th {
        font-size: 0.75em;
        letter-spacing: 0.5px;
    }

    .hide-mobile {
        display: none;
    }

    .item-cell {
        gap: 8px;
    }

    .item-icon {
        width: 28px;
        height: 28px;
    }

    .item-name {
        font-size: 0.9em;
        word-break: break-word;
    }

    /* Search Box */
    .search-box {
        flex-direction: column;
        gap: 10px;
    }

    .search-box select,
    .search-box input {
        width: 100%;
        min-width: unset;
        padding: 14px 18px;
    }

    .search-box button {
        width: 100%;
        padding: 14px 20px;
    }

    /* Badge */
    .badge {
        padding: 3px 8px;
        font-size: 0.75em;
    }

    /* Pagination */
    .pagination {
        gap: 4px;
        flex-wrap: wrap;
    }

    .page-btn {
        padding: 8px 12px;
        font-size: 0.85em;
        min-width: 36px;
    }

    /* Utilities */
    .refresh-info {
        text-align: center;
        font-size: 0.8em;
    }

    .no-data {
        padding: 30px 15px;
        font-size: 0.9em;
    }

    .description {
        font-size: 0.9em;
    }

    .info-list {
        font-size: 0.9em;
        padding-left: 20px;
    }

    .info-list li {
        margin-bottom: 8px;
    }

    /* Footer */
    footer {
        padding: 15px;
        margin-top: 20px;
        font-size: 0.85em;
    }
}

/* Responsive - Small Mobile */
@media (max-width: 480px) {
    .container {
        padding: 8px;
    }

    header h1 {
        font-size: 1.3em;
    }

    nav {
        gap: 6px;
    }

    nav a {
        padding: 8px 12px;
        font-size: 0.8em;
    }

    .section {
        padding: 12px;
        border-radius: var(--radius-sm);
    }

    .section h2 {
        font-size: 1em;
    }

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

    /* Table Card Layout for very small screens */
    table, thead, tbody, th, td, tr {
        display: block;
    }

    thead {
        display: none;
    }

    tr {
        background: var(--glass-bg);
        border-radius: var(--radius-sm);
        margin-bottom: 10px;
        padding: 12px;
        border: 1px solid var(--glass-border);
    }

    tr:hover {
        background: var(--glass-bg-hover);
    }

    td {
        padding: 8px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    td:last-child {
        border-bottom: none;
    }

    td::before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--text-muted);
        font-size: 0.8em;
        text-transform: uppercase;
        margin-right: 10px;
    }

    td.item-cell {
        justify-content: flex-start;
    }

    td.item-cell::before {
        display: none;
    }

    .item-cell {
        width: 100%;
        padding-bottom: 10px;
        border-bottom: 1px solid var(--glass-border);
        margin-bottom: 5px;
    }

    .page-btn {
        padding: 10px;
        min-width: 40px;
    }

    .pagination {
        gap: 6px;
    }
}