/* Gamification: streaks, leaderboards, friends, rare diamonds */
.diamond-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    font-weight: 700;
    color: #5c6bc0;
    background: linear-gradient(135deg, #e8eaf6 0%, #c5cae9 100%);
    border: 1px solid #9fa8da;
    padding: 4px 10px;
    border-radius: 20px;
}
.diamond-badge.rare {
    color: #0288d1;
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    border-color: #64b5f6;
    box-shadow: 0 0 12px rgba(3, 169, 244, 0.25);
    animation: gem-pulse 2.5s ease-in-out infinite;
}
.diamond-badge i { color: inherit; }
@keyframes gem-pulse {
    0%, 100% { box-shadow: 0 0 8px rgba(3, 169, 244, 0.2); }
    50% { box-shadow: 0 0 16px rgba(3, 169, 244, 0.45); }
}

.diamond-vault-wrap { margin-bottom: 20px; }
.diamond-vault {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: linear-gradient(135deg, #0a1628 0%, #152a45 100%);
    border: 1px solid rgba(100, 181, 246, 0.35);
    border-radius: 14px;
    box-shadow: 0 4px 24px rgba(3, 169, 244, 0.12);
}
.diamond-vault-gem {
    width: 52px; height: 52px;
    border-radius: 14px;
    background: linear-gradient(135deg, #0288d1, #01579b);
    display: flex; align-items: center; justify-content: center;
    font-size: 22px; color: #fff;
    box-shadow: 0 0 20px rgba(3, 169, 244, 0.4);
    animation: gem-pulse 2.5s ease-in-out infinite;
}
.diamond-vault-label {
    font-size: 10px; text-transform: uppercase; letter-spacing: 0.1em;
    color: rgba(255,255,255,0.55); font-weight: 700;
}
.diamond-vault-count {
    font-family: 'JetBrains Mono', monospace;
    font-size: 28px; font-weight: 800; color: #4fc3f7;
    line-height: 1.1;
}
.diamond-vault-hint { font-size: 11px; color: rgba(255,255,255,0.45); margin-top: 2px; }

.epic-champion-gems {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    font-weight: 700;
    color: #4fc3f7;
    margin-bottom: 4px;
    text-shadow: 0 0 12px rgba(79, 195, 247, 0.6);
}
.epic-champion-gems i { color: #ffd700; margin-right: 4px; }

/* Easter eggs */
.easter-gem-btn {
    position: absolute;
    opacity: 0.12;
    font-size: 14px;
    color: #4fc3f7;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.2s;
    user-select: none;
    z-index: 2;
}
.easter-gem-btn:hover { opacity: 0.55; transform: scale(1.2); }
.easter-flash {
    position: fixed;
    top: 20%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: rgba(10, 22, 40, 0.95);
    color: #fff;
    padding: 16px 24px;
    border-radius: 12px;
    border: 1px solid rgba(79, 195, 247, 0.4);
    font-size: 14px;
    font-weight: 600;
    z-index: 10000;
    opacity: 0;
    transition: opacity 0.35s, transform 0.35s;
    max-width: 90vw;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.easter-flash.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.easter-flash.rare {
    border-color: rgba(255, 215, 0, 0.5);
    box-shadow: 0 0 30px rgba(255, 215, 0, 0.2);
}
.easter-flash.rare::before {
    content: "💎 ";
}
#streak-secret-egg {
    cursor: pointer;
    border-radius: 2px;
    transition: transform 0.15s;
}
#streak-secret-egg:hover { transform: scale(1.4); }
.grad-cap-secret { cursor: pointer; }

.stats-kpi-row {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
}
.stats-kpi-card {
    background: var(--surface);
    border: 1px solid var(--border-soft);
    border-radius: 12px;
    padding: 16px;
    text-align: center;
}
.stats-kpi-card .val {
    font-family: 'JetBrains Mono', monospace;
    font-size: 26px;
    font-weight: 700;
    color: var(--green);
}
.stats-kpi-card .lbl {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-dim);
    margin-top: 4px;
}
.stats-kpi-card.streak .val { color: #ff6f00; }
.stats-kpi-card.diamonds .val { color: #0288d1; }

.streak-grid-wrap {
    background: var(--surface);
    border: 1px solid var(--border-soft);
    border-radius: 14px;
    padding: 20px;
    margin-bottom: 24px;
    overflow-x: auto;
}
.streak-grid-wrap h4 {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-dim);
    margin: 0 0 12px;
}
.streak-grid {
    display: grid;
    grid-template-rows: repeat(7, 11px);
    grid-auto-flow: column;
    grid-auto-columns: 11px;
    gap: 3px;
    width: max-content;
    min-width: 728px;
}
.streak-cell {
    width: 11px;
    height: 11px;
    border-radius: 2px;
    background: var(--progress-track, var(--border-soft));
    border: 1px solid color-mix(in srgb, var(--border-soft) 80%, transparent);
}
.streak-cell.l1 { background: color-mix(in srgb, var(--green) 26%, var(--surface)); border-color: transparent; }
.streak-cell.l2 { background: color-mix(in srgb, var(--green) 46%, var(--surface)); border-color: transparent; }
.streak-cell.l3 { background: color-mix(in srgb, var(--green) 68%, var(--surface)); border-color: transparent; }
.streak-cell.l4 { background: var(--green); border-color: transparent; }
.streak-legend {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 10px;
    font-size: 11px;
    color: var(--text-dim);
}
.streak-legend span { width: 11px; height: 11px; border-radius: 2px; display: inline-block; }

.profile-settings {
    background: var(--surface);
    border: 1px solid var(--border-soft);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 24px;
}
.profile-settings label { font-size: 12px; font-weight: 600; color: var(--text-muted); }
.profile-settings input {
    max-width: 280px;
    margin-top: 6px;
    padding: 8px 12px;
    border: 1px solid var(--border-soft);
    border-radius: 8px;
    font-family: 'JetBrains Mono', monospace;
}

.friends-add-row {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.friends-add-row input {
    flex: 1;
    min-width: 200px;
    padding: 10px 14px;
    border: 1px solid var(--border-soft);
    border-radius: 8px;
}
.friend-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px;
    background: var(--surface);
    border: 1px solid var(--border-soft);
    border-radius: 12px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}
.friend-card-head { display: flex; align-items: center; gap: 12px; }
.friend-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--green), #3d9a6a);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
}
.friend-stats-row {
    display: flex;
    gap: 16px;
    font-size: 12px;
    color: var(--text-muted);
    flex-wrap: wrap;
}
.friend-stats-row strong { color: var(--text); }

.test-watermark-single {
    display: none;
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 15;
    align-items: center;
    justify-content: center;
}
.test-watermark-single.active { display: flex; }
.watermark-big {
    font-family: 'JetBrains Mono', monospace;
    font-size: clamp(48px, 12vw, 120px);
    font-weight: 700;
    color: rgba(0, 77, 38, 0.045);
    transform: rotate(-25deg);
    text-align: center;
    line-height: 1.1;
    user-select: none;
    white-space: nowrap;
}
.watermark-big small {
    display: block;
    font-size: 0.35em;
    letter-spacing: 0.2em;
    margin-top: 0.2em;
}

.lb-section {
    padding: 60px 5%;
    background: var(--page-bg);
}
.lb-tabs {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 28px;
    flex-wrap: wrap;
}
.lb-tab {
    padding: 10px 20px;
    border: 1px solid var(--green);
    background: var(--surface);
    color: var(--green);
    border-radius: var(--radius-sm, 8px);
    font-weight: 700;
    font-size: 12px;
    text-transform: none;
    letter-spacing: 0;
    cursor: pointer;
    box-shadow: 0 1px 2px var(--shadow-soft, rgba(16, 24, 40, 0.06));
    transition: background 0.15s, border-color 0.15s, color 0.15s, box-shadow 0.15s;
}
.lb-tab.active,
.lb-tab:hover {
    border-color: var(--green);
    background: var(--green);
    color: #fff;
    box-shadow: 0 8px 20px color-mix(in srgb, var(--green) 25%, transparent);
}
.lb-podium {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 16px;
    margin-bottom: 32px;
    min-height: 200px;
}
.lb-podium-slot {
    text-align: center;
    flex: 0 0 140px;
    color: var(--text);
}
.lb-podium-slot.first .lb-avatar-md {
    width: 80px; height: 80px; font-size: 28px;
    border: 3px solid var(--gold);
    box-shadow: 0 10px 30px color-mix(in srgb, var(--gold) 28%, transparent);
}
.lb-podium-slot.second .lb-avatar-md {
    border: 3px solid color-mix(in srgb, var(--green) 55%, var(--surface));
    background: linear-gradient(135deg, var(--green), var(--green-dark, var(--green)));
}
.lb-podium-slot.third .lb-avatar-md {
    border: 3px solid color-mix(in srgb, var(--gold) 60%, var(--surface));
    background: linear-gradient(135deg, var(--gold), color-mix(in srgb, var(--gold) 78%, var(--green)));
}
.lb-podium-bar {
    height: 60px;
    background: linear-gradient(180deg, var(--green), var(--green-dark, var(--green)));
    border-radius: var(--radius, 8px) var(--radius, 8px) 0 0;
    margin-top: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse, #fff);
    font-weight: 800;
    font-size: 24px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.18);
}
.lb-podium-slot.first .lb-podium-bar {
    height: 90px;
    background: linear-gradient(180deg, var(--gold), color-mix(in srgb, var(--gold) 72%, var(--green)));
    color: var(--text);
}
.lb-podium-slot.second .lb-podium-bar { height: 70px; }
.lb-podium-slot.third .lb-podium-bar { height: 50px; opacity: 0.85; }
.lb-podium-name { font-weight: 700; font-size: 14px; margin-top: 6px; color: var(--text); }
.lb-list {
    max-width: 720px;
    margin: 0 auto;
    background: var(--surface);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius, 12px);
    overflow: hidden;
    box-shadow: 0 18px 44px var(--shadow-soft, rgba(16,24,40,0.06));
}
.lb-row {
    display: flex; align-items: center; gap: 14px; padding: 12px 18px;
    border-bottom: 1px solid var(--border-soft); transition: background 0.15s, transform 0.15s;
}
.lb-row:hover { background: var(--surface-muted); transform: translateX(2px); }
.lb-row:last-child { border-bottom: none; }
.lb-rank { width: 32px; font-family: 'JetBrains Mono', monospace; font-weight: 700; color: var(--text-dim); }
.lb-row.top10 .lb-rank { color: var(--green); }

/* Brand graduation cap */
.brand-grad-icon { color: var(--gold); margin-right: 6px; }

/* Avatar shared */
.lb-avatar-sm, .lb-avatar-md, .lb-avatar-lg {
    flex-shrink: 0;
    border-radius: 12px;
    object-fit: cover;
    background: linear-gradient(135deg, var(--green), var(--green-dark, var(--green)));
}
.lb-avatar-sm { width: 40px; height: 40px; border-radius: 10px; }
.lb-avatar-md { width: 64px; height: 64px; border-radius: 14px; margin: 0 auto 8px; }
.lb-avatar-lg { width: 88px; height: 88px; border-radius: 16px; }
.lb-avatar-fallback {
    display: flex; align-items: center; justify-content: center;
    font-weight: 800; color: var(--text-inverse, #fff);
    background: linear-gradient(135deg, var(--green), var(--green-dark, var(--green)));
    border: 2px solid rgba(255,255,255,0.2);
}
.lb-avatar-img { border: 2px solid rgba(255,255,255,0.15); }
.lb-row-body { flex: 1; min-width: 0; }
.lb-row-name { font-weight: 700; }
.lb-row-meta { font-size: 11px; color: var(--text-dim); }

/* Profile avatar upload */
.profile-avatar-row {
    display: flex; align-items: center; gap: 20px; margin-bottom: 20px; flex-wrap: wrap;
}
.profile-avatar-preview {
    width: 88px; height: 88px; border-radius: 16px;
    background: linear-gradient(135deg, var(--green), #3d9a6a);
    display: flex; align-items: center; justify-content: center;
    font-size: 32px; font-weight: 800; color: white;
    overflow: hidden; border: 3px solid var(--gold);
    flex-shrink: 0;
}
.profile-avatar-preview img { width: 100%; height: 100%; object-fit: cover; }

/* ===== Epic homepage top-5 leaderboard ===== */
.epic-home-lb {
    padding: 48px 5% 56px;
    background:
        radial-gradient(circle at 15% 12%, color-mix(in srgb, var(--green) 8%, transparent), transparent 28%),
        radial-gradient(circle at 85% 4%, color-mix(in srgb, var(--gold) 12%, transparent), transparent 26%),
        var(--page-bg);
    position: relative;
    overflow: hidden;
}
.epic-home-lb::before {
    content: "";
    position: absolute;
    inset: 0;
    background: none;
    pointer-events: none;
}
.epic-lb-title {
    font-family: 'DM Sans', sans-serif;
    font-size: clamp(26px, 3vw, 38px);
    font-weight: 800;
    text-align: center;
    color: var(--green);
    letter-spacing: 0;
    margin: 0 0 8px;
}
.epic-lb-sub {
    text-align: center;
    color: var(--text-secondary, #006aff);
    font-size: 14px;
    margin-bottom: 28px;
}
.epic-home-lb .lb-tabs { margin-bottom: 32px; }
.epic-home-lb .lb-tab {
    background: var(--surface);
    border-color: var(--green);
    color: var(--green);
    opacity: 1;
}
.epic-home-lb .lb-tab.active,
.epic-home-lb .lb-tab:hover {
    background: var(--green);
    border-color: var(--green);
    color: #ffffff;
    box-shadow: 0 4px 16px color-mix(in srgb, var(--green) 30%, transparent);
}
.epic-lb-wrap {
    max-width: 1120px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    background: var(--surface);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius, 12px);
    padding: 40px 42px 42px;
    box-shadow: 0 18px 48px var(--shadow-soft, rgba(16,24,40,0.08));
}

.epic-podium {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 12px;
    margin-bottom: 8px;
    min-height: 280px;
    padding: 0 8px;
}
.epic-slot { flex: 0 1 200px; max-width: 200px; }
.epic-slot-card {
    border-radius: 20px 20px 12px 12px;
    padding: 16px 12px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.epic-slot--first .epic-slot-card {
    background: linear-gradient(180deg, color-mix(in srgb, var(--gold) 18%, transparent) 0%, color-mix(in srgb, var(--gold) 6%, transparent) 70%, transparent 100%);
    border: 1px solid color-mix(in srgb, var(--gold) 34%, var(--border-soft));
    box-shadow: 0 0 32px color-mix(in srgb, var(--gold) 14%, transparent), inset 0 -60px 80px color-mix(in srgb, var(--gold) 7%, transparent);
    min-height: 260px;
}
.epic-slot--second .epic-slot-card {
    background: linear-gradient(180deg, color-mix(in srgb, var(--green) 10%, transparent) 0%, transparent 70%);
    border: 1px solid color-mix(in srgb, var(--green) 24%, var(--border-soft));
    box-shadow: 0 0 24px color-mix(in srgb, var(--green) 10%, transparent);
    min-height: 220px;
}
.epic-slot--third .epic-slot-card {
    background: linear-gradient(180deg, color-mix(in srgb, var(--gold) 8%, transparent) 0%, transparent 70%);
    border: 1px solid color-mix(in srgb, var(--gold) 22%, var(--border-soft));
    box-shadow: 0 0 24px color-mix(in srgb, var(--gold) 10%, transparent);
    min-height: 200px;
}
.epic-slot-name {
    font-weight: 700;
    font-size: 13px;
    color: var(--text);
    margin-bottom: 12px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding: 0 4px;
}
.epic-slot-avatar-wrap {
    display: flex;
    justify-content: center;
    margin-bottom: 16px;
}
.epic-slot--first .lb-avatar-lg { width: 100px; height: 100px; border: 3px solid color-mix(in srgb, var(--gold) 62%, var(--surface)); box-shadow: 0 0 24px color-mix(in srgb, var(--gold) 28%, transparent); }
.epic-slot--second .lb-avatar-lg { width: 80px; height: 80px; border: 3px solid color-mix(in srgb, var(--green) 52%, var(--surface)); }
.epic-slot--third .lb-avatar-lg { width: 72px; height: 72px; border: 3px solid color-mix(in srgb, var(--gold) 50%, var(--surface)); }
.epic-slot-rank {
    font-family: 'JetBrains Mono', monospace;
    font-size: clamp(48px, 8vw, 72px);
    font-weight: 900;
    line-height: 1;
    padding: 12px 0 8px;
}
.epic-slot--first .epic-slot-rank {
    color: var(--gold);
    text-shadow: 0 0 28px color-mix(in srgb, var(--gold) 35%, transparent);
}
.epic-slot--second .epic-slot-rank {
    color: var(--green);
    text-shadow: 0 0 24px color-mix(in srgb, var(--green) 18%, transparent);
}
.epic-slot--third .epic-slot-rank {
    color: color-mix(in srgb, var(--gold) 70%, var(--text));
    text-shadow: 0 0 24px color-mix(in srgb, var(--gold) 18%, transparent);
}

.epic-rest-list { margin-top: 16px; }
.epic-rest-row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 20px;
    margin-bottom: 4px;
    border-radius: 12px;
    background: var(--surface-muted);
    border: 1px solid var(--border-soft);
    transition: background 0.2s, transform 0.15s;
}
.epic-rest-row:hover {
    background: color-mix(in srgb, var(--green) 4%, var(--surface-muted));
    transform: translateX(4px);
}
.epic-rest-rank {
    font-family: 'JetBrains Mono', monospace;
    font-size: 28px;
    font-weight: 800;
    color: var(--green);
    min-width: 36px;
}
.epic-rest-name {
    flex: 1;
    font-weight: 700;
    color: var(--text);
    font-size: 15px;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.epic-rest-score {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    font-weight: 700;
    color: var(--text-muted);
    white-space: nowrap;
}
.epic-rest-score i {
    color: var(--gold);
    margin-right: 4px;
    font-size: 11px;
}
.epic-rest-row .lb-avatar-sm {
    border: 2px solid color-mix(in srgb, var(--green) 20%, var(--surface));
    box-shadow: 0 0 12px color-mix(in srgb, var(--green) 8%, transparent);
}

.epic-lb-full-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 28px;
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    cursor: pointer;
    background: none;
    border: none;
    font-family: 'DM Sans', sans-serif;
    transition: color 0.15s;
}
.epic-lb-full-link:hover { color: var(--green); }
.epic-empty {
    text-align: center;
    color: var(--text-muted);
    padding: 48px 20px;
    font-size: 15px;
}

@media (max-width: 600px) {
    .epic-podium { gap: 6px; min-height: 220px; }
    .epic-slot { flex: 0 1 110px; max-width: 110px; }
    .epic-slot-name { font-size: 11px; }
    .epic-slot--first .lb-avatar-lg { width: 72px; height: 72px; }
    .epic-slot--second .lb-avatar-lg { width: 60px; height: 60px; }
    .epic-slot--third .lb-avatar-lg { width: 56px; height: 56px; }
    .epic-slot-rank { font-size: 40px; }
    .epic-slot--first .epic-slot-card { min-height: 200px; }
    .epic-slot--second .epic-slot-card { min-height: 170px; }
    .epic-slot--third .epic-slot-card { min-height: 155px; }
}