/* ==========================================================================
   🏆 NEXTEDU NEXUS — MOCK ARENA LEADERBOARD STYLESHEET
   Dedicated Competitive Examination & Academic Board Mock Performance Center
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@600;700;800;900&family=Poppins:wght@400;500;600;700;800;900&display=swap');

:root {
    --nexus-bg: #070a12;
    --nexus-bg-gradient: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.15) 0%, rgba(7, 10, 18, 0.95) 75%);
    --nexus-card-bg: rgba(17, 24, 39, 0.65);
    --nexus-card-hover: rgba(30, 41, 59, 0.75);
    --nexus-card-border: rgba(255, 255, 255, 0.08);
    --nexus-card-border-glow: rgba(139, 92, 246, 0.35);
    --nexus-text-main: #f8fafc;
    --nexus-text-muted: #94a3b8;
    --nexus-text-sub: #64748b;
    --nexus-primary: #8b5cf6;
    --nexus-primary-rgb: 139, 92, 246;
    --nexus-indigo: #6366f1;
    --nexus-cyan: #06b6d4;
    --nexus-emerald: #10b981;
    --nexus-rose: #f43f5e;
    
    /* Podium metallics */
    --gold-glow: rgba(251, 191, 36, 0.35);
    --gold-border: rgba(251, 191, 36, 0.5);
    --gold-gradient: linear-gradient(135deg, rgba(251, 191, 36, 0.2) 0%, rgba(217, 119, 6, 0.05) 100%);
    --silver-glow: rgba(203, 213, 225, 0.25);
    --silver-border: rgba(203, 213, 225, 0.4);
    --silver-gradient: linear-gradient(135deg, rgba(203, 213, 225, 0.15) 0%, rgba(148, 163, 184, 0.05) 100%);
    --bronze-glow: rgba(217, 119, 6, 0.25);
    --bronze-border: rgba(217, 119, 6, 0.4);
    --bronze-gradient: linear-gradient(135deg, rgba(217, 119, 6, 0.15) 0%, rgba(180, 83, 9, 0.05) 100%);

    --nexus-radius-lg: 24px;
    --nexus-radius-md: 16px;
    --nexus-radius-sm: 10px;
    --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    --font-poppins: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-orbitron: 'Orbitron', monospace, sans-serif;
}

[data-theme="light"] {
    --nexus-bg: #f8fafc;
    --nexus-bg-gradient: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.08) 0%, #f8fafc 85%);
    --nexus-card-bg: rgba(255, 255, 255, 0.85);
    --nexus-card-hover: #ffffff;
    --nexus-card-border: rgba(15, 23, 42, 0.08);
    --nexus-card-border-glow: rgba(99, 102, 241, 0.35);
    --nexus-text-main: #0f172a;
    --nexus-text-muted: #475569;
    --nexus-text-sub: #94a3b8;
}

/* Base resets & typography */
body.nexus-mock-body {
    background: var(--nexus-bg) !important;
    background-image: var(--nexus-bg-gradient) !important;
    background-attachment: fixed !important;
    color: var(--nexus-text-main);
    font-family: var(--font-poppins);
    min-height: 100vh;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.nexus-page-container {
    max-width: 960px;
    margin: 0 auto;
    padding: 20px 16px 160px;
    box-sizing: border-box;
}

/* Header Bar */
.nexus-top-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--nexus-card-bg);
    border: 1px solid var(--nexus-card-border);
    border-radius: var(--nexus-radius-lg);
    padding: 14px 20px;
    margin-bottom: 24px;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
    position: relative;
    z-index: 50;
}

.nexus-header-left {
    display: flex;
    align-items: center;
    gap: 14px;
}

.nexus-back-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--nexus-card-border);
    color: var(--nexus-text-main);
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.1rem;
    transition: var(--transition-smooth);
    text-decoration: none;
}

.nexus-back-btn:hover {
    background: var(--nexus-primary);
    color: #fff;
    border-color: var(--nexus-primary);
    transform: translateX(-3px);
}

.nexus-brand-meta {
    display: flex;
    flex-direction: column;
}

.nexus-brand-tag {
    font-size: 0.65rem;
    font-weight: 800;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--nexus-primary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.nexus-header-title {
    font-family: var(--font-orbitron);
    font-size: 1.25rem;
    font-weight: 800;
    margin: 0;
    color: var(--nexus-text-main);
    letter-spacing: 0.5px;
    line-height: 1.2;
}

.nexus-header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nexus-filter-trigger {
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    color: #fff;
    border: none;
    padding: 10px 18px;
    border-radius: 14px;
    font-weight: 700;
    font-size: 0.88rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 18px rgba(99, 102, 241, 0.35);
    transition: var(--transition-smooth);
}

.nexus-filter-trigger:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(99, 102, 241, 0.5);
}

.nexus-theme-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--nexus-card-border);
    color: var(--nexus-text-main);
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition-smooth);
}

.nexus-theme-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: rotate(15deg);
}

/* Hero Section */
.nexus-rank-hero {
    background: var(--nexus-card-bg);
    border: 1px solid var(--nexus-card-border);
    border-radius: var(--nexus-radius-lg);
    padding: 26px 24px;
    margin-bottom: 22px;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    position: relative;
    overflow: hidden;
}

.nexus-rank-hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 250px;
    height: 100%;
    background: radial-gradient(circle at 100% 0%, rgba(139, 92, 246, 0.18), transparent 70%);
    pointer-events: none;
}

.nexus-hero-badge-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 12px;
}

.nexus-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: #a78bfa;
    background: rgba(139, 92, 246, 0.12);
    border: 1px solid rgba(139, 92, 246, 0.25);
    padding: 5px 12px;
    border-radius: 999px;
}

.nexus-live-indicator {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--nexus-emerald);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.25);
    padding: 4px 10px;
    border-radius: 999px;
}

.nexus-pulse-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--nexus-emerald);
    box-shadow: 0 0 8px var(--nexus-emerald);
    animation: nexusPulse 2s infinite;
}

@keyframes nexusPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.85); }
}

.nexus-hero-heading {
    font-size: 1.4rem;
    font-weight: 800;
    margin: 0 0 6px 0;
    color: var(--nexus-text-main);
    letter-spacing: -0.2px;
}

.nexus-hero-subtext {
    font-size: 0.85rem;
    color: var(--nexus-text-muted);
    margin: 0 0 20px 0;
    max-width: 600px;
    line-height: 1.5;
}

/* Quick Metrics Row */
.nexus-metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    border-top: 1px solid var(--nexus-card-border);
    padding-top: 16px;
}

.nexus-metric-box {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--nexus-card-border);
    border-radius: var(--nexus-radius-sm);
    padding: 10px 14px;
    transition: var(--transition-smooth);
}

.nexus-metric-box:hover {
    border-color: rgba(139, 92, 246, 0.3);
    transform: translateY(-1px);
}

.nexus-metric-lbl {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--nexus-text-sub);
    letter-spacing: 0.5px;
    display: block;
    margin-bottom: 4px;
}

.nexus-metric-val {
    font-family: var(--font-orbitron);
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--nexus-text-main);
    line-height: 1.1;
}

.nexus-metric-val.highlight-gold {
    color: #fbbf24;
}

.nexus-metric-val.highlight-purple {
    color: #c084fc;
}

/* Active Category Pill & Dynamic Arena Title */
.nexus-filter-meta-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    background: var(--nexus-card-bg);
    border: 1px solid var(--nexus-card-border);
    border-radius: var(--nexus-radius-md);
    padding: 12px 18px;
    margin-bottom: 18px;
    backdrop-filter: blur(10px);
}

.nexus-active-filter-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--nexus-text-main);
}

.nexus-filter-chip {
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.35);
    color: #818cf8;
    padding: 4px 10px;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.nexus-clear-filter-btn {
    background: none;
    border: none;
    color: var(--nexus-rose);
    font-size: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    padding: 0;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: opacity 0.2s;
}

.nexus-clear-filter-btn:hover {
    opacity: 0.8;
}

/* Time Tabs Segmented Control */
.rank-toggle-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: 22px;
}

.rank-toggle-pill {
    display: flex;
    background: rgba(15, 23, 42, 0.7);
    border: 1px solid var(--nexus-card-border);
    border-radius: 999px;
    padding: 4px;
    width: 100%;
    max-width: 400px;
    backdrop-filter: blur(12px);
    box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.25);
}

[data-theme="light"] .rank-toggle-pill {
    background: rgba(226, 232, 240, 0.7);
}

.toggle-btn {
    flex: 1;
    padding: 9px 0;
    border: none;
    background: transparent;
    color: var(--nexus-text-muted);
    font-weight: 700;
    font-size: 0.88rem;
    font-family: var(--font-poppins);
    border-radius: 999px;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-align: center;
}

.toggle-btn:hover {
    color: var(--nexus-text-main);
}

.toggle-btn.active {
    background: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
    transform: scale(1.02);
}

/* Info & Fair Play Banner */
.nexus-info-banner {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: rgba(99, 102, 241, 0.06);
    border: 1px solid rgba(99, 102, 241, 0.18);
    border-radius: var(--nexus-radius-md);
    padding: 12px 16px;
    margin-bottom: 22px;
    font-size: 0.8rem;
    color: var(--nexus-text-muted);
    line-height: 1.5;
}

.nexus-info-banner i {
    color: #818cf8;
    font-size: 1.1rem;
    margin-top: 2px;
    flex-shrink: 0;
}

.nexus-info-banner a {
    color: #818cf8;
    text-decoration: underline;
    font-weight: 600;
}

/* Offline Notice */
.nexus-offline-banner {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.35);
    color: #fca5a5;
    padding: 10px 16px;
    border-radius: var(--nexus-radius-md);
    font-size: 0.82rem;
    font-weight: 600;
    display: none;
    align-items: center;
    gap: 10px;
    margin-bottom: 18px;
    animation: fadeIn 0.3s ease;
}

/* Dynamic Arena Header Card */
.nexus-arena-title-row {
    margin-bottom: 20px;
    text-align: center;
}

#leaderboardTitle {
    font-size: 1.4rem;
    font-weight: 800;
    margin: 0 0 4px 0;
    color: var(--nexus-text-main);
    letter-spacing: -0.3px;
}

#leaderboardSubtitle {
    font-size: 0.82rem;
    color: var(--nexus-text-muted);
    margin: 0;
    font-weight: 500;
}

/* 3D Top 3 Podium */
.podium-section {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 16px;
    margin-bottom: 34px;
    perspective: 1000px;
    min-height: 280px;
}

.podium-item {
    flex: 1;
    max-width: 240px;
    border-radius: var(--nexus-radius-lg);
    padding: 24px 16px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    transition: var(--transition-smooth);
    position: relative;
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.3);
}

.podium-item:hover {
    transform: translateY(-6px);
}

/* Podium Rank Variations */
.podium-item.gold {
    background: var(--gold-gradient), var(--nexus-card-bg);
    border: 2px solid var(--gold-border);
    box-shadow: 0 14px 42px var(--gold-glow);
    transform: translateY(-16px);
    z-index: 5;
}

.podium-item.gold:hover {
    transform: translateY(-22px);
}

.podium-item.silver {
    background: var(--silver-gradient), var(--nexus-card-bg);
    border: 1.5px solid var(--silver-border);
    box-shadow: 0 10px 30px var(--silver-glow);
    z-index: 4;
}

.podium-item.bronze {
    background: var(--bronze-gradient), var(--nexus-card-bg);
    border: 1.5px solid var(--bronze-border);
    box-shadow: 0 10px 30px var(--bronze-glow);
    z-index: 3;
}

.podium-avatar-wrap {
    position: relative;
    margin-bottom: 14px;
}

.podium-avatar-img {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid rgba(255, 255, 255, 0.2);
    display: block;
    background: #1e293b;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.3);
}

.podium-item.gold .podium-avatar-img {
    width: 86px;
    height: 86px;
    border-color: #fbbf24;
    box-shadow: 0 0 24px rgba(251, 191, 36, 0.45);
}

.podium-item.silver .podium-avatar-img {
    border-color: #cbd5e1;
    box-shadow: 0 0 18px rgba(203, 213, 225, 0.35);
}

.podium-item.bronze .podium-avatar-img {
    border-color: #d97706;
    box-shadow: 0 0 18px rgba(217, 119, 6, 0.35);
}

.podium-crown {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 1.5rem;
    color: #fbbf24;
    filter: drop-shadow(0 2px 6px rgba(251, 191, 36, 0.6));
    animation: crownFloat 2.4s ease-in-out infinite alternate;
}

@keyframes crownFloat {
    0% { transform: translateX(-50%) translateY(0); }
    100% { transform: translateX(-50%) translateY(-5px); }
}

.podium-rank-tag {
    position: absolute;
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.72rem;
    font-weight: 900;
    color: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.rank-tag-gold {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #fff;
}

.rank-tag-silver {
    background: linear-gradient(135deg, #94a3b8, #64748b);
    color: #fff;
}

.rank-tag-bronze {
    background: linear-gradient(135deg, #b45309, #78350f);
    color: #fff;
}

.podium-info {
    width: 100%;
}

.podium-name {
    font-size: 0.95rem;
    font-weight: 800;
    margin: 0 0 4px 0;
    color: var(--nexus-text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
    cursor: pointer;
    transition: color 0.2s;
}

.podium-name:hover {
    color: var(--nexus-primary);
}

.podium-score {
    font-family: var(--font-orbitron);
    font-size: 1.15rem;
    font-weight: 800;
    margin: 0 0 6px 0;
    letter-spacing: 0.5px;
    color: var(--nexus-text-main);
}

.podium-item.gold .podium-score {
    color: #fbbf24;
}

.podium-stats {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--nexus-text-muted);
    background: rgba(255, 255, 255, 0.05);
    padding: 3px 10px;
    border-radius: 999px;
}

/* Rank List (4-50) */
.nexus-list-card {
    background: var(--nexus-card-bg);
    border: 1px solid var(--nexus-card-border);
    border-radius: var(--nexus-radius-lg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    overflow: hidden;
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.25);
    margin-bottom: 30px;
}

.nexus-list-header {
    display: grid;
    grid-template-columns: 70px 1fr 140px 140px;
    gap: 16px;
    padding: 16px 22px;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--nexus-card-border);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--nexus-text-sub);
}

.nexus-rank-list {
    display: flex;
    flex-direction: column;
}

.nexus-rank-row {
    display: grid;
    grid-template-columns: 70px 1fr 140px 140px;
    gap: 16px;
    align-items: center;
    padding: 14px 22px;
    border-bottom: 1px solid var(--nexus-card-border);
    transition: var(--transition-smooth);
}

.nexus-rank-row:last-child {
    border-bottom: none;
}

.nexus-rank-row:hover {
    background: var(--nexus-card-hover);
    transform: translateX(3px);
}

.nexus-rank-row.is-current-user {
    background: rgba(139, 92, 246, 0.12);
    border-left: 4px solid var(--nexus-primary);
}

.col-rank {
    font-family: var(--font-orbitron);
    font-weight: 800;
    font-size: 0.95rem;
    color: var(--nexus-text-muted);
}

.col-scholar {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.scholar-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    object-fit: cover;
    background: #1e293b;
    border: 1px solid var(--nexus-card-border);
    flex-shrink: 0;
}

.scholar-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    flex-wrap: wrap;
}

.scholar-name {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--nexus-text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    cursor: pointer;
    transition: color 0.2s;
}

.scholar-name:hover {
    color: var(--nexus-primary);
}

.plan-badge {
    font-size: 0.62rem;
    font-weight: 800;
    text-transform: uppercase;
    padding: 2px 7px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    letter-spacing: 0.5px;
    flex-shrink: 0;
}

.plan-badge.prime {
    background: linear-gradient(135deg, #e11d48, #be123c);
    color: #fff;
    box-shadow: 0 2px 8px rgba(225, 29, 72, 0.35);
}

.plan-badge.standard {
    background: linear-gradient(135deg, #6366f1, #4f46e5);
    color: #fff;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.35);
}

.you-tag {
    font-size: 0.6rem;
    font-weight: 900;
    color: #fff;
    background: #8b5cf6;
    padding: 2px 6px;
    border-radius: 4px;
    letter-spacing: 0.5px;
}

.col-tests {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--nexus-text-muted);
}

.col-score {
    font-family: var(--font-orbitron);
    font-size: 1rem;
    font-weight: 800;
    color: var(--nexus-primary);
    text-align: right;
}

/* Sticky Personal Rank HUD */
.user-rank-sticky {
    position: fixed;
    bottom: 84px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 32px);
    max-width: 780px;
    background: rgba(17, 24, 39, 0.92);
    border: 1px solid rgba(139, 92, 246, 0.35);
    border-radius: 20px;
    padding: 12px 20px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5), 0 0 25px rgba(139, 92, 246, 0.2);
    z-index: 100;
    display: none;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition-smooth);
}

[data-theme="light"] .user-rank-sticky {
    background: rgba(255, 255, 255, 0.95);
    border-color: rgba(99, 102, 241, 0.35);
    box-shadow: 0 10px 35px rgba(15, 23, 42, 0.15), 0 0 20px rgba(99, 102, 241, 0.15);
}

.sticky-rank-left {
    display: flex;
    align-items: center;
    gap: 14px;
    min-width: 0;
}

.sticky-rank-badge {
    font-family: var(--font-orbitron);
    font-size: 1.3rem;
    font-weight: 900;
    color: #fbbf24;
    background: rgba(251, 191, 36, 0.12);
    border: 1px solid rgba(251, 191, 36, 0.3);
    padding: 6px 12px;
    border-radius: 12px;
    min-width: 52px;
    text-align: center;
}

.sticky-user-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--nexus-primary);
    flex-shrink: 0;
}

.sticky-meta {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.sticky-name {
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--nexus-text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sticky-stats {
    font-size: 0.75rem;
    color: var(--nexus-text-muted);
    font-weight: 600;
}

.sticky-score {
    font-family: var(--font-orbitron);
    font-size: 1.25rem;
    font-weight: 900;
    color: var(--nexus-primary);
    text-align: right;
    flex-shrink: 0;
}

/* Filter Modal */
.nexus-modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(3, 7, 18, 0.78);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 99999;
    display: none;
    justify-content: center;
    align-items: center;
    padding: 16px;
    box-sizing: border-box;
}

.nexus-filter-dialog {
    background: var(--nexus-card-bg);
    border: 1px solid var(--nexus-card-border);
    border-radius: var(--nexus-radius-lg);
    width: 100%;
    max-width: 520px;
    max-height: 86vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    animation: modalSlideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalSlideUp {
    from { opacity: 0; transform: translateY(20px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.nexus-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 22px;
    border-bottom: 1px solid var(--nexus-card-border);
    flex-shrink: 0;
}

.nexus-modal-title {
    font-size: 1.15rem;
    font-weight: 800;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--nexus-text-main);
}

.nexus-modal-close {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--nexus-card-border);
    color: var(--nexus-text-main);
    width: 34px;
    height: 34px;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: var(--transition-smooth);
}

.nexus-modal-close:hover {
    background: rgba(255, 255, 255, 0.15);
}

.nexus-modal-body {
    padding: 20px 22px;
    overflow-y: auto;
    flex-grow: 1;
}

.nexus-filter-section-title {
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--nexus-primary);
    margin: 0 0 10px 0;
    display: flex;
    align-items: center;
    gap: 6px;
}

.chip-grid-small {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-bottom: 22px;
}

.chip-option {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--nexus-card-border);
    padding: 10px 8px;
    border-radius: 12px;
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--nexus-text-main);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    user-select: none;
}

.chip-option:hover {
    border-color: var(--nexus-primary);
    background: rgba(139, 92, 246, 0.08);
    transform: translateY(-1px);
}

.chip-option.selected {
    background: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    border-color: #8b5cf6;
    color: #fff;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

.chip-option.disabled {
    opacity: 0.35;
    cursor: not-allowed;
    pointer-events: none;
    filter: grayscale(1);
}

.nexus-filter-selection-preview {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--nexus-card-border);
    border-radius: var(--nexus-radius-sm);
    padding: 10px 14px;
    font-size: 0.8rem;
    color: var(--nexus-text-muted);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nexus-validation-msg {
    color: #fb7185;
    font-size: 0.78rem;
    font-weight: 700;
    margin-bottom: 12px;
    display: none;
    align-items: center;
    gap: 6px;
}

.nexus-modal-footer {
    display: flex;
    gap: 12px;
    padding: 16px 22px;
    border-top: 1px solid var(--nexus-card-border);
    background: rgba(0, 0, 0, 0.15);
    flex-shrink: 0;
}

.nexus-btn-reset {
    flex: 1;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--nexus-card-border);
    color: var(--nexus-text-main);
    padding: 12px;
    border-radius: 14px;
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.nexus-btn-reset:hover {
    background: rgba(255, 255, 255, 0.1);
}

.nexus-btn-apply {
    flex: 2;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    border: none;
    color: #fff;
    padding: 12px;
    border-radius: 14px;
    font-weight: 800;
    font-size: 0.9rem;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.35);
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.nexus-btn-apply:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 22px rgba(16, 185, 129, 0.5);
}

/* Paywall Modal (HTTP 403) */
.nexus-paywall-dialog {
    background: var(--nexus-card-bg);
    border: 1px solid rgba(244, 63, 94, 0.35);
    border-radius: var(--nexus-radius-lg);
    width: 100%;
    max-width: 460px;
    padding: 32px 28px;
    text-align: center;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6), 0 0 30px rgba(244, 63, 94, 0.2);
    animation: modalSlideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.nexus-paywall-icon {
    width: 68px;
    height: 68px;
    border-radius: 20px;
    background: rgba(244, 63, 94, 0.12);
    border: 1px solid rgba(244, 63, 94, 0.3);
    color: var(--nexus-rose);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 20px;
}

.nexus-paywall-title {
    font-size: 1.3rem;
    font-weight: 900;
    margin: 0 0 8px 0;
    color: var(--nexus-text-main);
}

.nexus-paywall-desc {
    font-size: 0.88rem;
    color: var(--nexus-text-muted);
    line-height: 1.5;
    margin: 0 0 24px 0;
}

.nexus-paywall-btn {
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    color: #fff;
    border: none;
    padding: 13px 28px;
    border-radius: 14px;
    font-weight: 800;
    font-size: 0.95rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    justify-content: center;
    box-shadow: 0 4px 18px rgba(99, 102, 241, 0.4);
    transition: var(--transition-smooth);
}

.nexus-paywall-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(99, 102, 241, 0.55);
}

/* Shimmer Skeleton Loaders */
.skeleton-shimmer {
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.04) 25%, rgba(255, 255, 255, 0.09) 50%, rgba(255, 255, 255, 0.04) 75%);
    background-size: 200% 100%;
    animation: shimmerAnim 1.6s infinite;
    border-radius: 8px;
}

@keyframes shimmerAnim {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-podium-box {
    width: 100%;
    height: 180px;
    border-radius: var(--nexus-radius-lg);
}

.skeleton-row {
    height: 48px;
    margin-bottom: 8px;
    border-radius: 12px;
}

/* Empty & Error States */
.nexus-state-box {
    text-align: center;
    padding: 50px 24px;
    color: var(--nexus-text-muted);
}

.nexus-state-icon {
    font-size: 2.8rem;
    color: var(--nexus-primary);
    margin-bottom: 14px;
}

.nexus-state-title {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--nexus-text-main);
    margin: 0 0 6px 0;
}

.nexus-state-desc {
    font-size: 0.85rem;
    color: var(--nexus-text-muted);
    max-width: 420px;
    margin: 0 auto 20px;
    line-height: 1.5;
}

.nexus-state-action {
    background: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    color: #fff;
    border: none;
    padding: 11px 22px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.88rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-smooth);
}

.nexus-state-action:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

/* Animations */
.fade-in-up {
    animation: fadeInUp 0.4s ease-out both;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive Rules */
@media (max-width: 768px) {
    .nexus-page-container {
        padding: 14px 12px 160px;
    }

    .nexus-top-header {
        padding: 12px 14px;
        margin-bottom: 18px;
    }

    .nexus-header-title {
        font-size: 1.1rem;
    }

    .nexus-filter-trigger span {
        display: none;
    }

    .nexus-filter-trigger {
        padding: 9px 12px;
    }

    .nexus-metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .podium-section {
        gap: 8px;
        min-height: 240px;
    }

    .podium-item {
        padding: 18px 8px 14px;
    }

    .podium-avatar-img {
        width: 58px;
        height: 58px;
    }

    .podium-item.gold .podium-avatar-img {
        width: 70px;
        height: 70px;
    }

    .podium-name {
        font-size: 0.82rem;
    }

    .podium-score {
        font-size: 0.92rem;
    }

    .podium-stats {
        font-size: 0.65rem;
        padding: 2px 7px;
    }

    .nexus-list-header,
    .nexus-rank-row {
        grid-template-columns: 50px 1fr 100px;
        gap: 10px;
        padding: 12px 14px;
    }

    .hide-on-mobile {
        display: none !important;
    }

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

    .user-rank-sticky {
        bottom: 74px;
        padding: 10px 14px;
        width: calc(100% - 20px);
    }

    .sticky-rank-badge {
        font-size: 1rem;
        padding: 4px 8px;
        min-width: 42px;
    }

    .sticky-user-avatar {
        width: 36px;
        height: 36px;
    }

    .sticky-name {
        font-size: 0.88rem;
    }

    .sticky-stats {
        font-size: 0.7rem;
    }

    .sticky-score {
        font-size: 1rem;
    }
}

@media (max-width: 430px) {
    .nexus-hero-heading {
        font-size: 1.2rem;
    }

    .col-rank {
        font-size: 0.85rem;
    }

    .scholar-name {
        font-size: 0.84rem;
    }

    .col-score {
        font-size: 0.88rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, ::before, ::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}