/* ═══════════════════════════════════════════
   Learning RPG — Dark Gaming Theme
   ═══════════════════════════════════════════ */

:root {
    --bg-body: #0f0e17;
    --bg-card: #1a1a2e;
    --bg-card-hover: #1f1f35;
    --bg-input: #16213e;
    --border: #2a2a4a;
    --accent-gold: #e6a817;
    --accent-purple: #7f5af0;
    --accent-green: #2cb67d;
    --accent-pink: #e53170;
    --text-primary: #fffffe;
    --text-muted: #94a1b2;
}

body {
    background: var(--bg-body);
    color: var(--text-primary);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    min-height: 100vh;
}

/* ── Navbar ── */
.rpg-navbar {
    background: linear-gradient(135deg, #0f0e17 0%, #1a1a2e 100%);
    border-bottom: 2px solid var(--accent-gold);
    padding: .6rem 1rem;
    box-shadow: 0 2px 20px rgba(230, 168, 23, 0.15);
}

.rpg-brand {
    font-weight: 800;
    font-size: 1.3rem;
    background: linear-gradient(135deg, var(--accent-gold), #f5d76e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-icon {
    -webkit-text-fill-color: initial;
    font-size: 1.4rem;
}

.rpg-navbar .nav-link {
    color: var(--text-muted);
    font-weight: 500;
    padding: .4rem .8rem;
    border-radius: 8px;
    transition: all 0.2s;
}

.rpg-navbar .nav-link:hover,
.rpg-navbar .nav-link.active {
    color: var(--accent-gold);
    background: rgba(230, 168, 23, 0.1);
}

/* ── Stat Cards ── */
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.2rem;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.stat-card.streak {
    border-color: #e6481750;
    background: linear-gradient(135deg, var(--bg-card), #2a1a1a);
}

.stat-icon {
    font-size: 1.8rem;
    margin-bottom: .3rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-gold), #f5d76e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ── RPG Cards ── */
.rpg-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
}

.card-title {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.05rem;
}

.card-title i {
    color: var(--accent-gold);
}

/* ── XP Bars ── */
.xp-bar-bg {
    height: 10px;
    background: #ffffff10;
    border-radius: 5px;
    overflow: hidden;
}

.xp-bar-fill {
    height: 100%;
    border-radius: 5px;
    transition: width 1s ease-out;
    box-shadow: 0 0 8px rgba(127, 90, 240, 0.4);
}

.skill-rank-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 600;
    margin-right: 6px;
    color: #fff;
}

.xp-value {
    color: var(--accent-green);
    font-weight: 700;
}

/* ── Skill Cards (skills page) ── */
.skill-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1rem;
    transition: background 0.2s;
}

.skill-card:hover {
    background: var(--bg-card-hover);
}

/* ── Heatmap ── */
.heatmap-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 3px;
}

.heatmap-cell {
    width: 14px;
    height: 14px;
    border-radius: 3px;
    transition: transform 0.15s;
}

.heatmap-cell:hover {
    transform: scale(1.5);
    z-index: 2;
}

.heatmap-cell.mini {
    width: 12px;
    height: 12px;
    display: inline-block;
}

.heatmap-cell.level-0 { background: #ffffff08; }
.heatmap-cell.level-1 { background: #2cb67d40; }
.heatmap-cell.level-2 { background: #2cb67d80; }
.heatmap-cell.level-3 { background: #2cb67dcc; }
.heatmap-cell.level-4 { background: #e6a817; box-shadow: 0 0 6px rgba(230, 168, 23, 0.5); }

.heatmap-legend {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* ── Rank Cards ── */
.rank-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: .8rem;
    text-align: center;
    transition: all 0.2s;
}

.rank-card.rank-current {
    border-width: 2px;
    box-shadow: 0 0 16px rgba(230, 168, 23, 0.2);
    background: linear-gradient(135deg, var(--bg-card), #2a2a1a);
}

.rank-icon {
    font-size: 1.5rem;
    display: block;
    margin-bottom: .2rem;
}

.rank-tier {
    display: block;
    font-size: 0.65rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: .2rem;
}

/* ── Tables ── */
.rpg-table {
    --bs-table-bg: transparent;
    --bs-table-hover-bg: #ffffff08;
    font-size: 0.9rem;
}

.rpg-table thead th {
    border-bottom-color: var(--border);
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.rpg-table td {
    border-bottom-color: #ffffff08;
    vertical-align: middle;
}

/* ── Forms ── */
.rpg-input {
    background: var(--bg-input) !important;
    border: 1px solid var(--border) !important;
    color: var(--text-primary) !important;
    border-radius: 10px;
}

.rpg-input:focus {
    border-color: var(--accent-purple) !important;
    box-shadow: 0 0 0 3px rgba(127, 90, 240, 0.2) !important;
}

/* ── Activity Type Selector ── */
.activity-type-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 8px;
}

.activity-type-option input {
    display: none;
}

.activity-type-card {
    background: var(--bg-input);
    border: 2px solid var(--border);
    border-radius: 12px;
    padding: .7rem .5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

.activity-type-card:hover {
    border-color: var(--accent, var(--accent-purple));
    background: rgba(127, 90, 240, 0.08);
}

.activity-type-option input:checked + .activity-type-card {
    border-color: var(--accent, var(--accent-purple));
    background: rgba(127, 90, 240, 0.12);
    box-shadow: 0 0 12px rgba(127, 90, 240, 0.2);
}

.type-icon {
    font-size: 1.5rem;
    display: block;
    margin-bottom: .2rem;
}

.type-name {
    font-size: 0.8rem;
    font-weight: 600;
}

/* ── Buttons ── */
.rpg-btn-primary {
    background: linear-gradient(135deg, var(--accent-purple), #6930c3);
    border: none;
    color: #fff;
    font-weight: 600;
    padding: .6rem 1.5rem;
    border-radius: 12px;
    transition: all 0.2s;
}

.rpg-btn-primary:hover {
    background: linear-gradient(135deg, #6930c3, var(--accent-purple));
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(127, 90, 240, 0.3);
    color: #fff;
}

/* ── XP Preview ── */
.xp-preview {
    color: var(--accent-green);
    font-size: 1rem;
}

.xp-preview strong {
    font-size: 1.2rem;
}

/* ── Alerts ── */
.rpg-alert {
    border-radius: 12px;
    border: none;
}

.flash-container {
    max-width: 600px;
    margin: 0 auto 1rem;
}

/* ── Footer ── */
.rpg-footer {
    border-top: 1px solid var(--border);
    margin-top: 2rem;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .stat-value { font-size: 1.5rem; }
    .stat-icon { font-size: 1.4rem; }
    .rpg-card { padding: 1rem; }
    .heatmap-cell { width: 10px; height: 10px; }
    .activity-type-grid { grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); }
}

/* ── Materials ── */
.material-item {
    padding: .8rem .5rem;
    transition: background 0.2s;
}

.material-item:hover {
    background: rgba(255, 255, 255, 0.03);
}

.status-toggle {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.status-option input { display: none; }

.status-card {
    text-align: center;
    padding: .6rem .4rem;
    border-radius: 10px;
    border: 2px solid var(--border);
    cursor: pointer;
    font-weight: 600;
    font-size: .85rem;
    transition: all 0.2s;
}

.status-card.studying { color: var(--text-muted); }
.status-card.done { color: var(--text-muted); }

.status-option input:checked + .status-card.studying {
    border-color: #fd7e14;
    background: rgba(253, 126, 20, 0.1);
    color: #fd7e14;
}

.status-option input:checked + .status-card.done {
    border-color: #2cb67d;
    background: rgba(44, 182, 125, 0.1);
    color: #2cb67d;
}

input[type="file"].rpg-input::file-selector-button {
    background: var(--accent-purple);
    color: #fff;
    border: none;
    padding: .4rem .8rem;
    border-radius: 8px;
    margin-right: .8rem;
    cursor: pointer;
    font-weight: 500;
}

input[type="file"].rpg-input::file-selector-button:hover {
    background: #6930c3;
}

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

.rpg-card, .stat-card {
    animation: fadeIn 0.4s ease-out;
}

/* ── Chart containers ── */
canvas {
    max-height: 300px;
}