:root {
    --bg-dark: #0f111a;
    --bg-card: #161925;
    --bg-hover: #1e2233;
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --accent-green: #00d95a;
    --accent-green-hover: #00bf4f;
    --border-color: #2a2f45;
    
    --race-zerg: #a855f7;
    --race-zerg-bg: rgba(168, 85, 247, 0.15);
    --race-protoss: #eab308;
    --race-protoss-bg: rgba(234, 179, 8, 0.15);
    --race-terran: #3b82f6;
    --race-terran-bg: rgba(59, 130, 246, 0.15);
    --race-random: #9ca3af;
    --race-random-bg: rgba(156, 163, 175, 0.15);
    
    --tier-s: #fbbf24;
    --tier-a: #ef4444;
    --tier-b: #a855f7;
    --tier-c: #3b82f6;
    --tier-d: #22c55e;
    --tier-e: #94a3b8;
}

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

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-dark);
}

.logo {
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: -0.5px;
}

.logo-text {
    color: #fff;
}

.logo-highlight {
    color: var(--accent-green);
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    padding: 0.5rem 0;
    transition: color 0.2s;
}

.nav-btn:hover {
    color: var(--text-main);
}

.nav-btn.active {
    color: var(--accent-green);
}

/* Main Content */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.top-section {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 2rem;
}

.live-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background-color: rgba(0, 217, 90, 0.1);
    color: var(--accent-green);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: 0.5px;
}

.title-area h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.title-area p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.action-area {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 1rem;
    color: var(--text-muted);
}

.search-box input {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    color: var(--text-main);
    font-family: inherit;
    width: 250px;
    outline: none;
    transition: border-color 0.2s;
}

.search-box input:focus {
    border-color: var(--accent-green);
}

.report-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--accent-green);
    color: #000;
    border: none;
    border-radius: 0.5rem;
    padding: 0.75rem 1.25rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}

.report-btn:hover {
    background-color: var(--accent-green-hover);
}
.report-btn:active {
    transform: scale(0.98);
}

.report-btn.secondary {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.report-btn.secondary:hover {
    background-color: rgba(255, 255, 255, 0.15);
}

/* Stats Cards */
.stats-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.5rem;
}

.card-icon.blue { background-color: rgba(59, 130, 246, 0.1); color: #3b82f6; }
.card-icon.purple { background-color: rgba(168, 85, 247, 0.1); color: #a855f7; }
.card-icon.yellow { background-color: rgba(234, 179, 8, 0.1); color: #eab308; }

.card-title {
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.card-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.card-desc {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.top-name {
    font-size: 1.1rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Tabs */
.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Table container styling */
.table-container {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    overflow: hidden;
    position: relative;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.data-table th,
.data-table td {
    padding: 1.25rem 1.5rem;
}

.data-table th {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    background-color: rgba(0,0,0,0.1);
    border-bottom: 1px solid var(--border-color);
}

.data-table tbody tr {
    transition: background-color 0.2s;
    border-bottom: 1px solid rgba(255,255,255,0.05); /* very faint line, or none. Requirements say "해당 회색선을 삭제해서 보여줘" so I will use border-bottom: none; */
}
.data-table tbody tr {
    border-bottom: none;
}

.data-table tbody tr:hover {
    background-color: rgba(255,255,255,0.03);
}

.rank-number {
    font-weight: 700;
    font-size: 1rem;
}
.rank-1 { color: #fbbf24; }
.rank-2 { color: #94a3b8; }
.rank-3 { color: #d97706; }

.user-name {
    font-weight: 600;
}

.race-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
}
.race-badge.zerg { background-color: var(--race-zerg-bg); color: var(--race-zerg); }
.race-badge.protoss { background-color: var(--race-protoss-bg); color: var(--race-protoss); }
.race-badge.terran { background-color: var(--race-terran-bg); color: var(--race-terran); }
.race-badge.random { background-color: var(--race-random-bg); color: var(--race-random); }

.rating-score {
    font-weight: 700;
    font-size: 1.1rem;
}

.record {
    font-size: 0.9rem;
    display: flex;
    gap: 0.5rem;
    align-items: center;
}
.win { color: var(--accent-green); font-weight: 600;}
.loss { color: #ef4444; font-weight: 600;}
.winrate { color: var(--text-muted); font-size: 0.8rem; }

.action-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 0.25rem;
}
.action-btn:hover {
    color: var(--text-main);
    background-color: rgba(255,255,255,0.1);
}

.rank-change {
    margin-left: 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
}
.change-up { color: var(--accent-green); }
.change-down { color: #ef4444; }
.change-none { color: var(--text-muted); }

/* History elements */
.history-header {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}
.history-header h2 {
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.badge {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 0.1rem 0.5rem;
    border-radius: 1rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}
.history-container {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    min-height: 300px;
}
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 300px;
    color: var(--text-muted);
}
.empty-icon {
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    background-color: rgba(255,255,255,0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}
.history-list {
    display:flex;
    flex-direction: column;
}
.history-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}
.history-item:last-child {
    border-bottom: none;
}
.match-info h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}
.match-time {
    font-size: 0.8rem;
    color: var(--text-muted);
}
.match-result {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background-color: rgba(0,0,0,0.2);
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
}
.player-outcome {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
}
.player-winner { color: var(--accent-green); }
.player-loser { color: #ef4444; }
.vs { color: var(--text-muted); font-size: 0.8rem; }
.rating-delta {
    font-size: 0.8rem;
    margin-left: 0.5rem;
}

/* Tier Table */
.tier-table th {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
}

.tier-table th:first-child, .tier-table td:first-child {
    width: 100px;
    text-align: center;
    font-weight: 700;
    font-size: 1.25rem;
}

.tier-table tbody tr {
    border-bottom: 1px solid var(--border-color);
}

.tier-table tbody tr:last-child {
    border-bottom: none;
}

.tier-table td {
    padding: 0;
}

.tier-s { color: var(--tier-s); }
.tier-a { color: var(--tier-a); }
.tier-b { color: var(--tier-b); }
.tier-c { color: var(--tier-c); }
.tier-d { color: var(--tier-d); }
.tier-e { color: var(--tier-e); }

.tier-row-content {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
    padding: 1.25rem 1.5rem;
}

.tier-player-item {
    font-size: 0.9rem;
    color: var(--text-muted);
    padding: 0.5rem;
    border-radius: 0.25rem;
    border: 2px solid transparent;
    transition: all 0.2s;
}

.tier-player-item:hover {
    background-color: rgba(255,255,255,0.05);
    color: var(--text-main);
}

.tier-player-item.highlight {
    border-color: #fbbf24;
    background-color: rgba(251, 191, 36, 0.1);
    color: #fff;
}

.user-details-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    background-color: rgba(0,0,0,0.2);
    padding: 1.5rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
}

.detail-stat {
    display: flex;
    flex-direction: column;
}
.detail-stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}
.detail-stat-val {
    font-size: 1.25rem;
    font-weight: 600;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 100;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    width: 100%;
    max-width: 500px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1.25rem;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.2s;
}

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

.modal-body {
    padding: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.form-group input,
.form-group select {
    width: 100%;
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.95rem;
}

.form-group select option {
    background-color: var(--bg-card);
    color: var(--text-main);
}

.form-row {
    display: flex;
    gap: 1rem;
}

.form-group.half {
    flex: 1;
}

.info-box {
    display: flex;
    gap: 0.75rem;
    background-color: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
}

.info-box svg {
    flex-shrink: 0;
    color: #3b82f6;
}

.info-box span {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.submit-btn {
    width: 100%;
    padding: 1rem;
    background-color: var(--accent-green);
    color: #000;
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

.submit-btn:hover {
    background-color: var(--accent-green-hover);
}

/* Admin Styles */
.admin-dashboard {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.admin-section {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
}

.admin-section h2 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.admin-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.admin-item {
    background-color: rgba(0,0,0,0.2);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.admin-item-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    font-size: 0.9rem;
}
.admin-item-info strong {
    color: var(--text-main);
}
.admin-item-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 0.25rem;
}

.admin-actions {
    display: flex;
    gap: 0.5rem;
}

.admin-btn {
    padding: 0.4rem 0.75rem;
    border: none;
    border-radius: 0.25rem;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
}

.admin-btn.approve { background-color: var(--accent-green); color: #000; }
.admin-btn.reject { background-color: #ef4444; color: #fff; }
.admin-btn.delete { background-color: var(--bg-dark); color: #ef4444; border: 1px solid #ef4444;}

.admin-status {
    font-size: 0.8rem;
    padding: 0.2rem 0.5rem;
    border-radius: 0.25rem;
    font-weight: 600;
}
.status-rejected { background-color: rgba(239,68,68,0.2); color: #ef4444; }
.status-approved { background-color: rgba(0,217,90,0.2); color: var(--accent-green); }

.admin-edit-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    align-items: center;
}
.admin-edit-input {
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.4rem 0.5rem;
    border-radius: 0.25rem;
    font-family: inherit;
    font-size: 0.85rem;
}
.admin-edit-input:focus {
    border-color: #60a5fa;
    outline: none;
}

/* Admin Grid Navigation */
.admin-grid-nav {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.admin-grid-card {
    border: 3px solid rgba(255, 255, 255, 0.4);
    border-radius: 1.5rem;
    padding: 2.5rem 1rem;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.6);
    cursor: pointer;
    transition: all 0.2s ease;
    background-color: transparent;
}

.admin-grid-card:hover {
    border-color: #60a5fa;
    color: var(--text-main);
}

.admin-grid-card.active {
    border-color: #60a5fa;
    color: #60a5fa;
    background-color: rgba(96, 165, 250, 0.05);
}

@media (max-width: 768px) {
    .admin-grid-nav {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 480px) {
    .admin-grid-nav {
        grid-template-columns: 1fr;
    }
}

/* New User Badge */
.new-badge {
    display: inline-block;
    background: linear-gradient(135deg, #ef4444, #fb923c);
    color: white;
    font-size: 0.65rem;
    font-weight: 800;
    padding: 0.1rem 0.35rem;
    border-radius: 4px;
    margin-right: 0.4rem;
    vertical-align: middle;
    line-height: 1;
    text-transform: uppercase;
    box-shadow: 0 2px 4px rgba(239, 68, 68, 0.3);
}
.new-badge.tier-badge {
    margin-right: 0.25rem;
    font-size: 0.6rem;
    padding: 0.1rem 0.25rem;
}