/* ==========================================
   PING PANG CLUB - Styles
   Inspiré du design de pingpang.paris
   ========================================== */

:root {
    /* Couleurs principales */
    --color-primary: #0b362d;
    --color-primary-light: #145244;
    --color-primary-dark: #072119;

    --color-black: #1a1a1a;
    --color-white: #ffffff;
    --color-cream: #F5F6F3;
    --color-gray-100: #f7f7f7;
    --color-gray-200: #e8e8e8;
    --color-gray-300: #d1d1d1;
    --color-gray-400: #9a9a9a;
    --color-gray-500: #6b6b6b;
    --color-gray-600: #4a4a4a;

    /* Couleurs pastel pour les catégories */
    --color-pastel-blue: #a8d4e6;
    --color-pastel-pink: #f4c4c4;
    --color-pastel-yellow: #f4e4a4;
    --color-pastel-violet: #d4c4e4;
    --color-pastel-green: #b4e4c4;

    /* États */
    --color-success: #22c55e;
    --color-error: #ef4444;
    --color-warning: #f59e0b;

    /* Typographie */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;

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

    /* Bordures */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    --radius-full: 9999px;

    /* Ombres */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;

    /* Layout */
    --sidebar-width: 260px;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-cream);
    color: var(--color-black);
    line-height: 1.5;
    min-height: 100vh;
}

/* ==========================================
   Layout Principal
   ========================================== */

.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--color-black);
    color: var(--color-white);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: var(--spacing-xl);
}

.logo-icon {
    font-size: 2rem;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    font-style: italic;
}

.nav-menu {
    list-style: none;
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-weight: 500;
    color: var(--color-gray-400);
}

.nav-item:hover {
    background: rgba(255,255,255,0.05);
    color: var(--color-white);
}

.nav-item.active {
    background: var(--color-primary);
    color: var(--color-white);
}

.nav-icon {
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
}

.sidebar-footer {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255,255,255,0.1);
}

.btn-reset {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: 1px solid rgba(255,255,255,0.2);
    color: var(--color-gray-400);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.85rem;
    transition: all var(--transition-fast);
}

.btn-reset:hover {
    background: rgba(255,255,255,0.05);
    color: var(--color-white);
    border-color: rgba(255,255,255,0.3);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: var(--spacing-2xl);
    max-width: calc(100% - var(--sidebar-width));
}

/* Pages */
.page {
    display: none;
    animation: fadeIn var(--transition-normal);
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Page Header */
.page-header {
    margin-bottom: var(--spacing-xl);
}

.page-header h1 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: var(--spacing-xs);
}

.page-header .subtitle {
    color: var(--color-gray-500);
    font-size: 1rem;
}

.btn-back {
    margin-top: var(--spacing-md);
    background: none;
    border: none;
    color: var(--color-primary);
    cursor: pointer;
    font-size: 0.9rem;
    padding: 0;
    font-weight: 500;
}

.btn-back:hover {
    text-decoration: underline;
}

/* ==========================================
   Composants Communs
   ========================================== */

/* Boutons */
.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.btn-primary:hover {
    background: var(--color-primary-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-black);
    border: 1px solid var(--color-gray-300);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-secondary:hover {
    border-color: var(--color-black);
}

/* Cards */
.card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

/* Form Elements */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray-600);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

/* ==========================================
   Dashboard
   ========================================== */

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.stat-value {
    display: block;
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 600;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.dashboard-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.dashboard-card.wide {
    grid-column: span 2;
}

.dashboard-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-600);
}

.mini-ranking .mini-rank-item,
.mini-history .mini-match-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-gray-200);
}

.mini-ranking .mini-rank-item:last-child,
.mini-history .mini-match-item:last-child {
    border-bottom: none;
}

.mini-rank-position {
    width: 24px;
    height: 24px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    margin-right: var(--spacing-md);
}

.mini-rank-position.gold { background: #fbbf24; }
.mini-rank-position.silver { background: #94a3b8; }
.mini-rank-position.bronze { background: #d97706; }

.mini-rank-name {
    flex: 1;
    font-weight: 500;
}

.mini-rank-elo {
    font-weight: 600;
    color: var(--color-primary);
}

.mini-match-item {
    justify-content: space-between;
    font-size: 0.9rem;
}

.mini-match-players {
    flex: 1;
}

.mini-match-score {
    font-weight: 600;
    background: var(--color-gray-100);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

/* ==========================================
   Match Form
   ========================================== */

.match-form-container {
    max-width: 700px;
}

.match-form {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.match-players {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.player-select-group {
    flex: 1;
}

.player-select-group label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray-600);
}

.player-select-group select {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-size: 1rem;
    background: var(--color-white);
    cursor: pointer;
}

.player-select-group select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.player-preview {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
    text-align: center;
    min-height: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.player-preview .elo-badge {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.player-preview .record {
    font-size: 0.85rem;
    color: var(--color-gray-500);
}

.vs-badge {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    font-style: italic;
    color: var(--color-gray-400);
    padding-top: 30px;
}

.score-input {
    margin-bottom: var(--spacing-xl);
}

.score-input h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
}

.score-fields {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
}

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

.score-field label {
    display: block;
    font-size: 0.85rem;
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-sm);
}

.score-field input {
    width: 80px;
    height: 80px;
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    color: var(--color-primary);
}

.score-field input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.score-separator {
    font-size: 2rem;
    color: var(--color-gray-400);
}

.elo-preview {
    background: var(--color-cream);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.elo-preview p {
    color: var(--color-gray-500);
    font-style: italic;
}

.elo-preview-content {
    display: flex;
    justify-content: space-around;
}

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

.elo-change .player-name {
    font-size: 0.9rem;
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-xs);
}

.elo-change .change-value {
    font-size: 1.5rem;
    font-weight: 700;
}

.elo-change .change-value.positive { color: var(--color-success); }
.elo-change .change-value.negative { color: var(--color-error); }

/* ==========================================
   Ranking Table
   ========================================== */

.ranking-filters {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 1px solid var(--color-gray-300);
    background: var(--color-white);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--color-primary);
}

.filter-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.ranking-table-container {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.ranking-table {
    width: 100%;
    border-collapse: collapse;
}

.ranking-table th,
.ranking-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
}

.ranking-table th {
    background: var(--color-gray-100);
    font-weight: 600;
    color: var(--color-gray-600);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ranking-table tbody tr {
    border-bottom: 1px solid var(--color-gray-200);
    transition: background var(--transition-fast);
    cursor: pointer;
}

.ranking-table tbody tr:hover {
    background: var(--color-gray-100);
}

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

.rank-cell {
    font-weight: 700;
    width: 50px;
}

.rank-cell .rank-badge {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    background: var(--color-gray-200);
}

.rank-cell .rank-badge.gold { background: linear-gradient(135deg, #fbbf24, #f59e0b); color: white; }
.rank-cell .rank-badge.silver { background: linear-gradient(135deg, #cbd5e1, #94a3b8); color: white; }
.rank-cell .rank-badge.bronze { background: linear-gradient(135deg, #fbbf24, #d97706); color: white; }

.player-cell {
    font-weight: 600;
}

.elo-cell {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
}

.ratio-cell {
    color: var(--color-gray-500);
}

.evolution-cell {
    font-weight: 600;
}

.evolution-cell.positive { color: var(--color-success); }
.evolution-cell.negative { color: var(--color-error); }

/* ==========================================
   Tournament
   ========================================== */

.tournament-tabs,
.tournament-phases {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-gray-200);
    padding-bottom: var(--spacing-md);
}

.tab-btn,
.phase-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    background: none;
    cursor: pointer;
    font-weight: 500;
    color: var(--color-gray-500);
    position: relative;
    transition: color var(--transition-fast);
}

.tab-btn:hover,
.phase-btn:hover {
    color: var(--color-black);
}

.tab-btn.active,
.phase-btn.active {
    color: var(--color-primary);
}

.tab-btn.active::after,
.phase-btn.active::after {
    content: '';
    position: absolute;
    bottom: calc(-1 * var(--spacing-md) - 1px);
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary);
}

.tab-content,
.phase-content {
    display: none;
}

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

.tournament-form {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    max-width: 600px;
}

.participants-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
    max-height: 300px;
    overflow-y: auto;
    padding: var(--spacing-md);
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
}

.participant-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--color-white);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.participant-checkbox:hover {
    background: var(--color-cream);
}

.participant-checkbox input {
    cursor: pointer;
}

.participant-checkbox.selected {
    background: var(--color-primary);
    color: var(--color-white);
}

/* Pools */
.pools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.pool-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.pool-header {
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-md) var(--spacing-lg);
    font-weight: 600;
}

.pool-standings {
    width: 100%;
}

.pool-standings th,
.pool-standings td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: center;
}

.pool-standings th {
    background: var(--color-gray-100);
    font-size: 0.75rem;
    text-transform: uppercase;
}

.pool-standings td:first-child {
    text-align: left;
    font-weight: 500;
}

.pool-standings .qualified {
    background: rgba(34, 197, 94, 0.1);
}

.pool-matches {
    padding: var(--spacing-md);
    border-top: 1px solid var(--color-gray-200);
}

.pool-match {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm);
    background: var(--color-gray-100);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.pool-match:hover {
    background: var(--color-gray-200);
}

.pool-match:last-child {
    margin-bottom: 0;
}

.pool-match.completed {
    background: var(--color-cream);
}

.pool-match-players {
    flex: 1;
    font-size: 0.9rem;
}

.pool-match-score {
    font-weight: 700;
    padding: 2px 8px;
    background: var(--color-white);
    border-radius: var(--radius-sm);
}

.pool-match-score.pending {
    color: var(--color-gray-400);
    font-weight: 400;
}

/* Bracket */
.bracket {
    overflow-x: auto;
    padding: var(--spacing-lg);
    background: var(--color-white);
    border-radius: var(--radius-lg);
}

.bracket-rounds {
    display: flex;
    gap: var(--spacing-xl);
    min-width: max-content;
}

.bracket-round {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    justify-content: space-around;
    min-width: 220px;
}

.bracket-round-title {
    font-weight: 600;
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-600);
}

.bracket-match {
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.bracket-match:hover {
    box-shadow: var(--shadow-md);
}

.bracket-match.completed {
    background: var(--color-cream);
}

.bracket-player {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-200);
}

.bracket-player:last-child {
    border-bottom: none;
}

.bracket-player.winner {
    background: var(--color-primary);
    color: var(--color-white);
}

.bracket-player .name {
    font-weight: 500;
}

.bracket-player .score {
    font-weight: 700;
}

/* Tournament Cards */
.tournament-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tournament-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.tournament-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.tournament-card-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.tournament-card-badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.tournament-card-badge.active {
    background: var(--color-success);
    color: white;
}

.tournament-card-badge.completed {
    background: var(--color-gray-400);
    color: white;
}

.tournament-card-info {
    display: flex;
    gap: var(--spacing-lg);
    color: var(--color-gray-500);
    font-size: 0.9rem;
}

/* ==========================================
   Players
   ========================================== */

.players-actions {
    margin-bottom: var(--spacing-xl);
}

.players-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.player-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.player-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.player-avatar {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: 2rem;
    color: var(--color-white);
    font-weight: 700;
}

.player-card-name {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.player-card-elo {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.player-card-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    color: var(--color-gray-500);
    font-size: 0.9rem;
}

.player-card-stat {
    text-align: center;
}

.player-card-stat strong {
    display: block;
    font-size: 1.25rem;
    color: var(--color-black);
}

/* Player Profile */
.player-profile-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-xl);
}

.profile-stats {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
}

.profile-elo {
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 600;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.profile-elo-label {
    font-size: 0.9rem;
    color: var(--color-gray-500);
    text-transform: uppercase;
    margin-bottom: var(--spacing-xl);
}

.profile-stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.profile-stat-item {
    padding: var(--spacing-md);
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
}

.profile-stat-item strong {
    display: block;
    font-size: 1.5rem;
    color: var(--color-black);
}

.profile-stat-item span {
    font-size: 0.85rem;
    color: var(--color-gray-500);
}

.profile-chart {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.profile-chart h3 {
    margin-bottom: var(--spacing-md);
}

.profile-chart canvas {
    width: 100%;
    max-height: 250px;
}

.profile-history {
    grid-column: span 2;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.profile-history h3 {
    margin-bottom: var(--spacing-md);
}

/* ==========================================
   History
   ========================================== */

.history-filters {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.history-filters input,
.history-filters select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-size: 1rem;
}

.history-filters input {
    flex: 1;
    max-width: 300px;
}

.history-list {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.history-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
}

.history-item:last-child {
    border-bottom: none;
}

.history-date {
    width: 100px;
    font-size: 0.85rem;
    color: var(--color-gray-500);
}

.history-players {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.history-player {
    flex: 1;
    text-align: center;
}

.history-player.winner {
    font-weight: 600;
}

.history-vs {
    color: var(--color-gray-400);
    font-style: italic;
}

.history-score {
    font-weight: 700;
    font-size: 1.25rem;
    min-width: 60px;
    text-align: center;
}

.history-elo-changes {
    display: flex;
    gap: var(--spacing-md);
    min-width: 120px;
}

.history-elo-change {
    font-size: 0.85rem;
    font-weight: 600;
}

.history-elo-change.positive { color: var(--color-success); }
.history-elo-change.negative { color: var(--color-error); }

/* ==========================================
   Modals
   ========================================== */

.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--spacing-lg);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
}

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

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--color-gray-100);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-500);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-gray-200);
    color: var(--color-black);
}

.modal-content form {
    padding: var(--spacing-lg);
}

/* ==========================================
   Toast Notifications
   ========================================== */

.toast-container {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    background: var(--color-black);
    color: var(--color-white);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    animation: slideIn var(--transition-normal);
    max-width: 350px;
}

.toast.success { background: var(--color-success); }
.toast.error { background: var(--color-error); }
.toast.warning { background: var(--color-warning); }

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ==========================================
   Empty States
   ========================================== */

.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-gray-500);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.empty-state-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: var(--spacing-sm);
}

/* ==========================================
   Mobile Menu
   ========================================== */

.mobile-menu-btn {
    display: none;
    position: fixed;
    top: var(--spacing-md);
    left: var(--spacing-md);
    z-index: 200;
    width: 44px;
    height: 44px;
    background: var(--color-black);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 10px;
}

.mobile-menu-btn span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-white);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 90;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

/* ==========================================
   Responsive
   ========================================== */

@media (max-width: 1024px) {
    .dashboard-stats {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .dashboard-card.wide {
        grid-column: span 1;
    }

    .player-profile-content {
        grid-template-columns: 1fr;
    }

    .profile-history {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    :root {
        --sidebar-width: 0px;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .sidebar {
        transform: translateX(-100%);
        width: 260px;
        transition: transform var(--transition-normal);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        max-width: 100%;
        padding: var(--spacing-lg);
        padding-top: calc(var(--spacing-lg) + 60px);
    }

    .page-header h1 {
        font-size: 1.75rem;
    }

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

    .stat-card {
        padding: var(--spacing-md);
    }

    .stat-value {
        font-size: 2rem;
    }

    .match-players {
        flex-direction: column;
    }

    .vs-badge {
        padding: var(--spacing-md) 0;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

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

    .history-item {
        flex-wrap: wrap;
    }

    .history-date {
        width: 100%;
        margin-bottom: var(--spacing-sm);
    }

    .ranking-table th,
    .ranking-table td {
        padding: var(--spacing-sm);
        font-size: 0.85rem;
    }

    .elo-cell {
        font-size: 1rem;
    }
}