/* =============================================================
   CodeForge — Leaderboard Page Stylesheet
   leaderboard.css | "Scale the Ranks" — perfectly harmonized
   with home.css & problems.css design language.
   ============================================================= */

/* ─────────────────────────────────────────────────────────────
   0. MESH BACKGROUND — identical to home & problems pages
   ───────────────────────────────────────────────────────────── */
body.leaderboard-mesh-bg {
    background:
        radial-gradient(ellipse at 0% 0%,   #b8d9f4 0%, transparent 50%),
        radial-gradient(ellipse at 100% 80%, #f5bf5a 0%, transparent 50%),
        radial-gradient(ellipse at 60% 100%, #f0c97e 0%, transparent 40%),
        #f0ebe1;
    background-attachment: fixed;
    min-height: 100vh;
    color: #111111;

    /* Light-palette token overrides — mirrors problems page */
    --bg-primary:    #f5efe6;
    --bg-secondary:  #ede8df;
    --bg-elevated:   #ffffff;
    --bg-card:       rgba(255, 255, 255, 0.72);
    --text-primary:   #111111;
    --text-secondary: #444444;
    --text-muted:     #888888;
    --border:       #d6d0c7;
    --border-hover: #bcb6ae;
    --glass-bg:     rgba(255, 255, 255, 0.45);
    --glass-border: rgba(0, 0, 0, 0.08);
    --shadow-sm:  0 2px 8px  rgba(0, 0, 0, 0.06);
    --shadow-md:  0 8px 24px rgba(0, 0, 0, 0.09);
    --shadow-lg:  0 16px 40px rgba(0, 0, 0, 0.12);
}



/* ─────────────────────────────────────────────────────────────
   2. PAGE WRAPPER — mirrors problems-page-container
   ───────────────────────────────────────────────────────────── */
.leaderboard-page-container {
    max-width: 1360px;
    margin: 0 auto;
    padding: 40px 48px 80px;
    animation: fadeInUp 0.7s ease-out both;
}

/* ─────────────────────────────────────────────────────────────
   3. MAIN CANVAS — rounded framed panel, mirrors problems-canvas
   ───────────────────────────────────────────────────────────── */
.leaderboard-canvas {
    background: rgba(255, 255, 255, 0.28);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border: 1px solid rgba(0, 0, 0, 0.14);
    border-radius: 28px;
    overflow: hidden;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.07);
}

/* ─────────────────────────────────────────────────────────────
   4. HERO HEADER — giant title + subtitle
   ───────────────────────────────────────────────────────────── */
.leaderboard-hero-section {
    padding: 52px 56px 36px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.10);
    position: relative;
    overflow: hidden;
}

/* Decorative sparkle accents (matching mockup corner stars) */
.leaderboard-hero-section::before,
.leaderboard-hero-section::after {
    content: '✦';
    position: absolute;
    font-size: 1.1rem;
    color: rgba(0, 0, 0, 0.15);
    pointer-events: none;
}
.leaderboard-hero-section::before {
    right: 48%;
    bottom: 36px;
}
.leaderboard-hero-section::after {
    right: 32%;
    top: 52px;
    font-size: 0.7rem;
}

.leaderboard-main-title {
    font-size: clamp(3rem, 6vw, 5.5rem);
    font-weight: 800;
    letter-spacing: -0.05em;
    line-height: 1.02;
    color: #111111;
    margin: 0 0 14px 0;
}

.leaderboard-subtitle {
    color: #555555;
    font-size: 1rem;
    font-weight: 400;
    max-width: 52ch;
    line-height: 1.65;
}

/* ─────────────────────────────────────────────────────────────
   5. TWO-COLUMN LAYOUT — mirrors problems-layout structure
   ───────────────────────────────────────────────────────────── */
.leaderboard-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 0;
    align-items: start;
    width: 100%;
    min-width: 0;
}

/* ─────────────────────────────────────────────────────────────
   6. LEFT COLUMN — Rankings table
   ───────────────────────────────────────────────────────────── */
.leaderboard-main-column {
    padding: 40px 48px 48px 56px;
    border-right: 1px solid rgba(0, 0, 0, 0.10);
    min-width: 0;
    overflow-x: auto;
}

/* ─────────────────────────────────────────────────────────────
   7. RANKINGS TABLE — clean borderless style like problems table
   ───────────────────────────────────────────────────────────── */
.rankings-table {
    width: 100%;
    min-width: 560px;
    border-collapse: separate;
    border-spacing: 0;
    text-align: left;
}

.rankings-table thead th {
    font-size: 0.8rem;
    font-weight: 700;
    color: #888888;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0 0 14px;
    border-bottom: 1px solid #e0dbd3;
    white-space: nowrap;
}

/* Align stat headers to the right */
.rankings-table thead th.th-points,
.rankings-table thead th.th-solved,
.rankings-table thead th.th-accuracy {
    text-align: right;
}

.rankings-table thead th.th-action {
    width: 60px;
    text-align: right;
}

/* ─────────────────────────────────────────────────────────────
   8. TABLE ROWS — podium & regular
   ───────────────────────────────────────────────────────────── */
.rankings-table tbody tr {
    transition: background 0.15s ease, transform 0.2s ease;
}

.rankings-table tbody tr:hover {
    background: rgba(0, 0, 0, 0.025);
    transform: translateX(4px);
}

/* Gold — Rank 1 */
.rankings-table tbody tr.lb-rank-1 {
    background: rgba(254, 243, 199, 0.55);
}
.rankings-table tbody tr.lb-rank-1:hover {
    background: rgba(254, 243, 199, 0.75);
}

/* Silver — Rank 2 */
.rankings-table tbody tr.lb-rank-2 {
    background: rgba(241, 245, 249, 0.55);
}
.rankings-table tbody tr.lb-rank-2:hover {
    background: rgba(241, 245, 249, 0.80);
}

/* Bronze — Rank 3 */
.rankings-table tbody tr.lb-rank-3 {
    background: rgba(255, 247, 237, 0.55);
}
.rankings-table tbody tr.lb-rank-3:hover {
    background: rgba(255, 247, 237, 0.80);
}

/* ─────────────────────────────────────────────────────────────
   9. TABLE CELLS
   ───────────────────────────────────────────────────────────── */
.rankings-table td {
    padding: 18px 0;
    vertical-align: middle;
    border-bottom: 1px solid #ede8e0;
    color: #111111;
    font-size: 0.95rem;
}

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

/* Rank cell */
.lb-rank-cell {
    width: 72px;
    padding-right: 12px !important;
}

.lb-rank-badge {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-weight: 700;
    font-size: 0.9rem;
    color: #444444;
}

/* Medal icon wrapper */
.lb-medal-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    font-size: 1rem;
    flex-shrink: 0;
}

/* Gold medal */
.lb-medal-gold {
    background: #fef3c7;
    border: 1.5px solid #fbbf24;
    color: #92400e;
}

/* Silver medal */
.lb-medal-silver {
    background: #f1f5f9;
    border: 1.5px solid #cbd5e1;
    color: #475569;
}

/* Bronze medal */
.lb-medal-bronze {
    background: #fff7ed;
    border: 1.5px solid #fb923c;
    color: #9a3412;
}

/* Plain rank circle for 4+ */
.lb-rank-plain {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.10);
    font-weight: 700;
    font-size: 0.85rem;
    color: #555555;
}

/* User cell */
.lb-user-cell {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-right: 16px;
    min-width: 180px;
}

/* Initials avatar — colored per position */
.lb-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.75rem;
    color: #ffffff;
    flex-shrink: 0;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

/* Gradient palette — 10 distinct gradients, JS cycles lb-avatar-c1..c10 class */
.lb-avatar-c1,  .lb-avatar-c11, .lb-avatar-c21, .lb-avatar-c31, .lb-avatar-c41 { background: #111111; }
.lb-avatar-c2,  .lb-avatar-c12, .lb-avatar-c22, .lb-avatar-c32, .lb-avatar-c42 { background: #111111; }
.lb-avatar-c3,  .lb-avatar-c13, .lb-avatar-c23, .lb-avatar-c33, .lb-avatar-c43 { background: #111111; }
.lb-avatar-c4,  .lb-avatar-c14, .lb-avatar-c24, .lb-avatar-c34, .lb-avatar-c44 { background: #111111; }
.lb-avatar-c5,  .lb-avatar-c15, .lb-avatar-c25, .lb-avatar-c35, .lb-avatar-c45 { background: #111111; }
.lb-avatar-c6,  .lb-avatar-c16, .lb-avatar-c26, .lb-avatar-c36, .lb-avatar-c46 { background: #111111; }
.lb-avatar-c7,  .lb-avatar-c17, .lb-avatar-c27, .lb-avatar-c37, .lb-avatar-c47 { background: #111111; }
.lb-avatar-c8,  .lb-avatar-c18, .lb-avatar-c28, .lb-avatar-c38, .lb-avatar-c48 { background: #111111; }
.lb-avatar-c9,  .lb-avatar-c19, .lb-avatar-c29, .lb-avatar-c39, .lb-avatar-c49 { background: #111111; }
.lb-avatar-c10, .lb-avatar-c20, .lb-avatar-c30, .lb-avatar-c40, .lb-avatar-c50 { background: #333333; }

.lb-username {
    font-weight: 600;
    font-size: 0.95rem;
    color: #111111;
    text-decoration: none;
    transition: color 0.15s ease;
}

.lb-username:hover {
    color: #555555;
}

/* Stat cells — right-aligned monospace numbers */
.lb-stat-cell {
    font-family: var(--font-mono);
    font-weight: 600;
    color: #333333;
    font-size: 0.9rem;
    text-align: right;
    padding-right: 16px;
}

/* Action cell — circular arrow button */
.lb-action-cell {
    text-align: right;
    padding-right: 0 !important;
    width: 60px;
}

.lb-action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1.5px solid #999999;
    background: transparent;
    color: #333333;
    text-decoration: none;
    font-size: 1rem;
    line-height: 1;
    transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease, transform 0.15s ease;
    flex-shrink: 0;
}

.lb-action-btn:hover {
    border-color: #111111;
    background: #111111;
    color: #ffffff;
    transform: scale(1.08);
}

/* ─────────────────────────────────────────────────────────────
   10. CURRENT USER ROW HIGHLIGHT
   ───────────────────────────────────────────────────────────── */
.rankings-table tbody tr.lb-current-user td {
    background: rgba(59, 130, 246, 0.05) !important;
}
.rankings-table tbody tr.lb-current-user .lb-username {
    font-weight: 700;
}

/* ─────────────────────────────────────────────────────────────
   11. EMPTY STATE
   ───────────────────────────────────────────────────────────── */
.lb-empty-state {
    text-align: center;
    padding: 64px 32px;
    color: #888888;
}

.lb-empty-icon {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.4;
}

.lb-empty-state h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: #333333;
    margin-bottom: 8px;
}

.lb-empty-state p {
    font-size: 0.95rem;
    margin-bottom: 20px;
}

/* Empty state CTA button */
.lb-cta-btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.9rem;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: background 0.2s ease, transform 0.15s ease;
    background: #111111;
    color: #ffffff;
    border: 1.5px solid #111111;
}

.lb-cta-btn:hover {
    background: #333333;
    border-color: #333333;
    transform: translateY(-1px);
}

/* ─────────────────────────────────────────────────────────────
   12. RIGHT COLUMN — Competitive Segments sidebar
   ───────────────────────────────────────────────────────────── */
.leaderboard-sidebar {
    padding: 36px 28px 48px;
    min-width: 0;
}

/* ─────────────────────────────────────────────────────────────
   13. SEGMENTS CARD — stacked layered paper effect
   ───────────────────────────────────────────────────────────── */
.segments-stack {
    position: relative;
}

/* Pseudo-elements disabled — layered effect achieved via box-shadow on card */
.segments-stack::after,
.segments-stack::before {
    display: none;
}

/* Primary card — clean shadow, no horizontal overflow */
.segments-card {
    position: relative;
    z-index: 2;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 0, 0, 0.10);
    border-radius: 20px;
    padding: 28px 24px 32px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.10);
}

/* ─────────────────────────────────────────────────────────────
   14. SEGMENTS CARD HEADER
   ───────────────────────────────────────────────────────────── */
.segments-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 28px;
}

.segments-title {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: #111111;
    line-height: 1.1;
    margin: 0;
}

/* Trophy badge icon */
.segments-trophy-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border-radius: 14px;
    background: rgba(245, 191, 90, 0.15);
    border: 1.5px solid rgba(245, 191, 90, 0.3);
    font-size: 1.3rem;
    flex-shrink: 0;
    margin-left: 12px;
}

/* ─────────────────────────────────────────────────────────────
   15. FILTER FIELDS — matching problems page select style
   ───────────────────────────────────────────────────────────── */
.segments-body {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.segment-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.segment-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: #333333;
}

.segment-select {
    width: 100%;
    padding: 11px 40px 11px 16px;
    border: 1px solid #d4cec5;
    border-radius: 999px;
    background-color: rgba(255, 255, 255, 0.9);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23666666' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    color: #111111;
    font-size: 0.9rem;
    font-family: inherit;
    appearance: none;
    -webkit-appearance: none;
    outline: none;
    cursor: pointer;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.segment-select:focus {
    border-color: #888888;
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.06);
}

.segment-select::-ms-expand {
    display: none;
}

/* ─────────────────────────────────────────────────────────────
   16. SPARKLE DECORATION (matching mockup aesthetics)
   ───────────────────────────────────────────────────────────── */
.lb-sparkle {
    position: absolute;
    pointer-events: none;
    color: rgba(0, 0, 0, 0.12);
    font-size: 1.4rem;
    line-height: 1;
}

/* ─────────────────────────────────────────────────────────────
   17. RESPONSIVE — Tablet and Mobile
   ───────────────────────────────────────────────────────────── */
@media (max-width: 1100px) {
    .leaderboard-page-container {
        padding: 28px 28px 60px;
    }

    .leaderboard-layout {
        grid-template-columns: 1fr;
    }

    .leaderboard-main-column {
        border-right: none;
        border-bottom: 1px solid rgba(0, 0, 0, 0.10);
        padding: 36px 36px 40px;
    }

    .leaderboard-sidebar {
        padding: 32px 36px 40px;
        order: -1; /* Filter above table on smaller screens */
    }

    .segments-stack::before,
    .segments-stack::after {
        display: none; /* hide stacked layers on mobile */
    }

    body.leaderboard-mesh-bg .navbar-actions {
        border-left: none;
        padding-left: 0;
    }
}

@media (max-width: 768px) {
    .leaderboard-page-container {
        padding: 16px 16px 48px;
    }

    .leaderboard-hero-section {
        padding: 36px 24px 24px;
    }

    .leaderboard-main-title {
        font-size: 2.8rem;
    }

    .leaderboard-main-column {
        padding: 28px 20px 32px;
    }

    .leaderboard-sidebar {
        padding: 24px 20px 28px;
    }

    /* Wrap to compact table on mobile */
    .rankings-table thead th.th-solved,
    .rankings-table td.lb-stat-cell:nth-child(4) {
        display: none;
    }
}

@media (max-width: 560px) {
    .leaderboard-main-title {
        font-size: 2.2rem;
        letter-spacing: -0.04em;
    }

    .rankings-table thead th.th-accuracy,
    .rankings-table td.lb-stat-cell:nth-child(5) {
        display: none;
    }

    .lb-avatar {
        width: 30px;
        height: 30px;
        font-size: 0.65rem;
    }

    .lb-username {
        font-size: 0.875rem;
    }

    .rankings-table td {
        padding: 14px 0;
    }
}

/* ─────────────────────────────────────────────────────────────
   18. FOOTER — light-mode overrides for leaderboard page
   ───────────────────────────────────────────────────────────── */
body.leaderboard-mesh-bg .footer {
    background: rgba(240, 235, 225, 0.60);
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    color: #555555;
    margin-top: 0;
}

body.leaderboard-mesh-bg .footer p {
    color: #666666;
}

body.leaderboard-mesh-bg .footer-links li a {
    color: #555555;
}

body.leaderboard-mesh-bg .footer-links li a:hover {
    color: #111111;
}

/* ─────────────────────────────────────────────────────────────
   19. PROFILE / LOGOUT NAV BUTTONS — light mode match
   ───────────────────────────────────────────────────────────── */
body.leaderboard-mesh-bg .profile-btn,
body.leaderboard-mesh-bg .nav-logout-btn {
    background: #ffffff;
    border: 1px solid rgba(0, 0, 0, 0.10);
    color: #111111;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

body.leaderboard-mesh-bg .profile-name {
    color: #111111;
    font-weight: 600;
}

body.leaderboard-mesh-bg .auth-toggle-capsule {
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.03);
}

body.leaderboard-mesh-bg .auth-toggle-btn {
    color: #444444;
}

body.leaderboard-mesh-bg .auth-toggle-btn:hover {
    color: #111111;
}

body.leaderboard-mesh-bg .auth-toggle-btn.active {
    background: #111111;
    color: #ffffff;
}