/* Gomoku AI Arena — theme skin.
   Layered on top of Bootstrap 5.1.3. Loaded from base.html. */

:root {
    --arena-bg: #f5f6fb;
    --arena-ink: #1e2233;
    --arena-muted: #6b7186;
    --arena-primary: #5b4bd6;
    --arena-primary-dark: #4536b8;
    --arena-violet: #8b5cf6;
    --arena-emerald: #10b981;
    --arena-amber: #f59e0b;
    --arena-rose: #f43f5e;
    --arena-surface: #ffffff;
    --arena-border: #e7e9f3;
    --arena-shadow: 0 6px 24px rgba(30, 34, 51, 0.07);
    --arena-shadow-lg: 0 12px 36px rgba(30, 34, 51, 0.12);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--arena-ink);
    background-color: var(--arena-bg);
    /* faint Gomoku-grid backdrop */
    background-image:
        linear-gradient(rgba(91, 75, 214, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(91, 75, 214, 0.04) 1px, transparent 1px);
    background-size: 28px 28px;
    /* sticky footer: keep the copyright pinned to the bottom of the page */
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
main { flex: 1 0 auto; }
footer { flex-shrink: 0; }

h1, h2, h3, h4, h5, h6, .navbar-brand {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-weight: 600;
    letter-spacing: -0.01em;
}

/* ---- Navbar ---- */
.navbar.bg-primary {
    background: linear-gradient(100deg, var(--arena-primary-dark), var(--arena-violet)) !important;
    box-shadow: var(--arena-shadow);
}
.navbar-brand { font-weight: 700; }
.navbar-dark .nav-link {
    border-radius: 8px;
    padding: 0.4rem 0.85rem !important;
    transition: background-color 0.15s ease;
}
.navbar-dark .nav-link:hover,
.navbar-dark .nav-link:focus {
    background-color: rgba(255, 255, 255, 0.14);
    color: #fff;
}

/* ---- Navbar User Badge ---- */
.navbar-user-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.22);
    color: #ffffff;
    font-size: 0.875rem;
    font-weight: 500;
    backdrop-filter: blur(4px);
    transition: background-color 0.15s ease;
}
.navbar-user-badge:hover {
    background: rgba(255, 255, 255, 0.2);
}
.navbar-user-badge .user-avatar {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.05em;
}
.navbar-user-badge .user-role-tag {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    padding: 0.2em 0.5em;
    border-radius: 6px;
    text-transform: uppercase;
    line-height: 1;
}
.navbar-user-badge .role-admin {
    background: var(--arena-rose);
    color: #ffffff;
}

/* ---- Cards ---- */
.card {
    border: 1px solid var(--arena-border);
    border-radius: 16px;
    box-shadow: var(--arena-shadow);
    background: var(--arena-surface);
}
.card-header {
    background: transparent;
    border-bottom: 1px solid var(--arena-border);
    font-weight: 600;
}
.agent-card, .dashboard-card { transition: transform 0.18s ease, box-shadow 0.18s ease; }
.agent-card:hover, .dashboard-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--arena-shadow-lg);
}

/* ---- Dashboard stat cards: gradient fills ---- */
.card.bg-primary { background: linear-gradient(135deg, var(--arena-primary), var(--arena-violet)) !important; border: none; }
.card.bg-success { background: linear-gradient(135deg, #059669, var(--arena-emerald)) !important; border: none; }
.card.bg-warning { background: linear-gradient(135deg, #d97706, var(--arena-amber)) !important; border: none; }
.card.bg-info    { background: linear-gradient(135deg, #0ea5e9, #38bdf8) !important; border: none; }
.card.bg-warning .card-title, .card.bg-warning h2 { color: #fff !important; }

/* ---- Buttons ---- */
.btn { border-radius: 10px; font-weight: 500; }
.btn-primary {
    background: linear-gradient(135deg, var(--arena-primary), var(--arena-violet));
    border: none;
    box-shadow: 0 4px 12px rgba(91, 75, 214, 0.28);
}
.btn-primary:hover, .btn-primary:focus {
    background: linear-gradient(135deg, var(--arena-primary-dark), #7c3aed);
    box-shadow: 0 6px 16px rgba(91, 75, 214, 0.38);
}
.btn-outline-primary {
    color: var(--arena-primary);
    border-color: var(--arena-primary);
}
.btn-outline-primary:hover {
    background: var(--arena-primary);
    border-color: var(--arena-primary);
}

/* ---- Badges ---- */
.badge { font-weight: 600; border-radius: 8px; padding: 0.4em 0.65em; }
.badge.bg-primary { background: var(--arena-primary) !important; }
.badge.bg-success { background: var(--arena-emerald) !important; }
.badge.bg-info { background: #0ea5e9 !important; }

/* ---- Tables ---- */
.table { --bs-table-striped-bg: rgba(91, 75, 214, 0.04); }
.table thead th {
    text-transform: uppercase;
    font-size: 0.74rem;
    letter-spacing: 0.04em;
    color: var(--arena-muted);
    border-bottom: 2px solid var(--arena-border);
}
.table td { vertical-align: middle; }

/* ---- List groups ---- */
.list-group-item {
    border-color: var(--arena-border);
    transition: background-color 0.15s ease;
}
.list-group-item:hover { background-color: rgba(91, 75, 214, 0.04); }

/* ---- Progress ---- */
.progress { background-color: #eceef7; border-radius: 999px; }
.progress-bar { background: linear-gradient(90deg, var(--arena-primary), var(--arena-violet)); }

/* ---- Misc / existing helpers ---- */
.lead { color: var(--arena-muted); }
.leaderboard-rank { font-size: 1.2em; font-weight: 700; }
.win-rate { color: var(--arena-emerald); font-weight: 600; }
.game-result-black_wins { color: var(--arena-ink); font-weight: bold; }
.game-result-white_wins { color: var(--arena-muted); font-weight: bold; }
.game-result-draw { color: var(--arena-amber); font-weight: bold; }
.game-result-error { color: var(--arena-rose); font-weight: bold; }
.elo-rating { font-size: 0.9em; color: var(--arena-muted); }

footer.bg-light {
    background: var(--arena-surface) !important;
    border-top: 1px solid var(--arena-border);
}

/* ---- Theme toggle button ---- */
.theme-toggle {
    color: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 10px;
    margin-right: 0.5rem;
    line-height: 1;
}
.theme-toggle:hover, .theme-toggle:focus {
    color: #fff;
    background: rgba(255, 255, 255, 0.14);
}

/* ======================================================
   DARK MODE
   ====================================================== */
[data-theme="dark"] {
    --arena-bg: #0f1117;
    --arena-ink: #e7e9f3;
    --arena-muted: #9aa0b5;
    --arena-primary: #7c6cf0;
    --arena-primary-dark: #6354e0;
    --arena-violet: #a78bfa;
    --arena-surface: #1a1d29;
    --arena-border: #2a2e3f;
    --arena-shadow: 0 6px 24px rgba(0, 0, 0, 0.45);
    --arena-shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.6);
}
[data-theme="dark"] body {
    background-image:
        linear-gradient(rgba(167, 139, 250, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(167, 139, 250, 0.05) 1px, transparent 1px);
}
/* Surfaces & neutral utilities */
[data-theme="dark"] .bg-light,
[data-theme="dark"] pre.bg-light { background: var(--arena-surface) !important; color: var(--arena-ink); }
[data-theme="dark"] .bg-white { background: var(--arena-surface) !important; }
[data-theme="dark"] .text-dark { color: var(--arena-ink) !important; }
[data-theme="dark"] .text-muted,
[data-theme="dark"] .text-secondary { color: var(--arena-muted) !important; }
[data-theme="dark"] .list-group-item {
    background: var(--arena-surface);
    color: var(--arena-ink);
}
[data-theme="dark"] .list-group-item:hover { background: rgba(167, 139, 250, 0.08); }
/* Tables */
[data-theme="dark"] .table {
    --bs-table-color: var(--arena-ink);
    --bs-table-striped-color: var(--arena-ink);
    --bs-table-striped-bg: rgba(167, 139, 250, 0.06);
    color: var(--arena-ink);
    border-color: var(--arena-border);
}
[data-theme="dark"] .table > :not(caption) > * > * { border-color: var(--arena-border); }
/* Forms */
[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
    background-color: #11141d;
    border-color: var(--arena-border);
    color: var(--arena-ink);
}
[data-theme="dark"] .form-control::placeholder { color: #6b7186; }
[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus {
    background-color: #11141d;
    color: var(--arena-ink);
    border-color: var(--arena-primary);
    box-shadow: 0 0 0 0.2rem rgba(124, 108, 240, 0.25);
}
[data-theme="dark"] .form-text { color: var(--arena-muted); }
/* Code & badges that assume light backgrounds */
[data-theme="dark"] code { color: #e879f9; }
[data-theme="dark"] .badge.bg-info.text-dark { color: #0f1117 !important; }
/* Theme-toggle icon: show sun in dark mode */
[data-theme="dark"] .theme-toggle .fa-moon { display: none; }
.theme-toggle .fa-sun { display: none; }
[data-theme="dark"] .theme-toggle .fa-sun { display: inline-block; }

/* Alerts: Bootstrap's pastel fills are too bright on a dark page.
   Re-tint to translucent surfaces with a colored edge and light text. */
[data-theme="dark"] .alert { border-width: 1px; border-style: solid; }
[data-theme="dark"] .alert-success {
    background: rgba(16, 185, 129, 0.12); border-color: rgba(16, 185, 129, 0.35); color: #6ee7b7;
}
[data-theme="dark"] .alert-danger {
    background: rgba(244, 63, 94, 0.12); border-color: rgba(244, 63, 94, 0.35); color: #fda4af;
}
[data-theme="dark"] .alert-warning {
    background: rgba(245, 158, 11, 0.12); border-color: rgba(245, 158, 11, 0.35); color: #fcd34d;
}
[data-theme="dark"] .alert-info {
    background: rgba(14, 165, 233, 0.12); border-color: rgba(14, 165, 233, 0.35); color: #7dd3fc;
}
[data-theme="dark"] .alert a { color: inherit; text-decoration: underline; }
/* The dismiss "×" is a dark SVG — invert it so it shows on dark alerts. */
[data-theme="dark"] .btn-close { filter: invert(1) grayscale(1) brightness(1.6); }

/* Stat cards stay vivid by design, but soften the brightest (info/cyan)
   gradient slightly so it doesn't glare against the dark page. */
[data-theme="dark"] .card.bg-info { background: linear-gradient(135deg, #0284c7, #0ea5e9) !important; }

/* Modals, Dropdowns, and Input Groups in dark mode */
[data-theme="dark"] .modal-content {
    background-color: var(--arena-surface);
    border-color: var(--arena-border);
    color: var(--arena-ink);
}
[data-theme="dark"] .modal-header,
[data-theme="dark"] .modal-footer {
    border-color: var(--arena-border);
}
[data-theme="dark"] .dropdown-menu {
    background-color: var(--arena-surface);
    border-color: var(--arena-border);
    box-shadow: var(--arena-shadow-lg);
}
[data-theme="dark"] .dropdown-item {
    color: var(--arena-ink);
}
[data-theme="dark"] .dropdown-item:hover,
[data-theme="dark"] .dropdown-item:focus {
    background-color: rgba(167, 139, 250, 0.12);
    color: var(--arena-violet);
}
[data-theme="dark"] .input-group-text {
    background-color: #11141d;
    border-color: var(--arena-border);
    color: var(--arena-muted);
}

/* ======================================================
   REDUCED MOTION — honor user OS preference
   ====================================================== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
    .agent-card:hover, .dashboard-card:hover { transform: none; }
}