:root {
            /* Matched with index/home.css: clean 60/30/10 light system */
            --bg: #FFFFFF;
            --surface: #F8FAFC;
            --bg2: #F8FAFC;
            --card: #FFFFFF;
            --card-hover: #F8FAFC;
            --border: #E2E8F0;
            --border-hover: #CBD5E1;
            --fg: #0F172A;
            --fg-secondary: #334155;
            --muted: #64748B;
            --muted-light: #94A3B8;
            --accent: #2563EB;
            --accent-hover: #1D4ED8;
            --accent-light: #EFF6FF;
            --accent-subtle: rgba(37, 99, 235, 0.06);

            --gold: #D97706;
            --gold-dim: #FFFBEB;
            --gold-subtle: rgba(217, 119, 6, 0.06);
            --silver: #71717A;
            --silver-dim: #F4F4F5;
            --silver-subtle: rgba(113, 113, 122, 0.06);
            --bronze: #B45309;
            --bronze-dim: #FEF9C3;
            --bronze-subtle: rgba(180, 83, 9, 0.06);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Outfit', sans-serif;
            background: var(--bg);
            color: var(--fg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background:
                radial-gradient(circle at 18% 8%, rgba(37, 99, 235, 0.10), transparent 28%),
                linear-gradient(180deg, var(--accent-light) 0%, var(--bg) 42%);
            pointer-events: none;
            z-index: 0;
        }

        body::after {
            content: '';
            position: fixed;
            right: -20%;
            bottom: -30%;
            width: 55%;
            height: 55%;
            background: radial-gradient(ellipse, rgba(37, 99, 235, 0.05) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }

        ::-webkit-scrollbar {
            width: 5px;
            height: 5px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 10px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--muted-light);
        }

        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            padding: 16px 24px;
            transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
        }

        .navbar.scrolled {
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            padding: 12px 24px;
        }

        .brand-title {
            display: flex;
            flex-direction: column;
            line-height: 13px;
            font-weight: 800;
            font-size: 16px;
            color: var(--fg);
            letter-spacing: -0.01em;
        }

        .nav-link {
            color: var(--muted);
            font-weight: 600;
            font-size: 13px;
            text-decoration: none;
            padding: 8px 16px;
            border-radius: 8px;
            transition: all 0.25s;
            letter-spacing: 0.01em;
        }

        .nav-link:hover {
            color: var(--fg);
            background: var(--surface);
        }

        .nav-link.active {
            color: var(--accent);
            background: var(--accent-light);
        }

        .page-shell {
            position: relative;
            z-index: 1;
        }

        .dashboard-hero {
            padding: 120px 24px 32px;
            position: relative;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 5px 12px;
            border-radius: 6px;
            background: var(--accent-light);
            color: var(--accent);
            font-size: 11px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        .dashboard-title {
            font-size: clamp(34px, 5vw, 58px);
            font-weight: 900;
            letter-spacing: -0.03em;
            line-height: 1.05;
            color: var(--fg);
        }

        .dashboard-title span {
            color: var(--accent);
        }

        #headerSubtitle {
            color: var(--muted) !important;
            font-size: clamp(15px, 2vw, 18px) !important;
            line-height: 1.7;
            max-width: 620px;
            margin-left: 0 !important;
            margin-top: 18px;
        }

        .glass-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 12px;
            box-shadow: none;
            transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
        }

        .glass-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
            border-color: var(--border-hover);
        }

        .tab-btn {
            padding: 8px 16px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 13px;
            letter-spacing: 0.01em;
            color: var(--muted);
            background: transparent;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.25s;
            white-space: nowrap;
        }

        .tab-btn:hover {
            color: var(--fg);
            background: var(--surface);
        }

        .tab-btn.active {
            color: var(--accent);
            background: var(--accent-light);
            border-color: transparent;
            box-shadow: none;
        }

        .sub-tab-btn {
            padding: 6px 14px;
            border-radius: 6px;
            font-weight: 600;
            font-size: 12px;
            color: var(--muted);
            background: transparent;
            border: 1px solid var(--border);
            cursor: pointer;
            transition: all 0.25s;
        }

        .sub-tab-btn:hover {
            color: var(--fg);
            background: var(--surface);
        }

        .sub-tab-btn.active {
            color: var(--accent);
            background: var(--accent-light);
            border-color: transparent;
        }

        .stat-card {
            border-radius: 12px;
            padding: 24px;
            border: 1px solid var(--border);
            background: var(--bg) !important;
            transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
            position: relative;
            overflow: hidden;
        }

        .stat-card::after {
            display: none;
        }

        .stat-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
            border-color: var(--border-hover);
        }

        .stat-card.gold {
            border-color: rgba(217, 119, 6, 0.18);
            background: var(--gold-subtle) !important;
        }

        .stat-card.silver {
            border-color: rgba(113, 113, 122, 0.18);
            background: var(--silver-subtle) !important;
        }

        .stat-card.bronze {
            border-color: rgba(180, 83, 9, 0.18);
            background: var(--bronze-subtle) !important;
        }

        .stat-card.total-card {
            border-color: var(--accent);
            background: var(--accent-light) !important;
        }

        .medal-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            animation: none;
        }

        .medal-icon.gold-icon {
            background: var(--gold-dim);
            color: var(--gold);
            box-shadow: none;
        }

        .medal-icon.silver-icon {
            background: var(--silver-dim);
            color: var(--silver);
        }

        .medal-icon.bronze-icon {
            background: var(--bronze-dim);
            color: var(--bronze);
        }

        .data-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            font-size: 13px;
        }

        .data-table thead th {
            padding: 12px 14px;
            text-align: left;
            font-weight: 700;
            font-size: 11px;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--muted);
            border-bottom: 1px solid var(--border);
            background: var(--surface);
            position: sticky;
            top: 0;
            z-index: 2;
        }

        .data-table thead th:first-child {
            border-radius: 12px 0 0 0;
        }

        .data-table thead th:last-child {
            border-radius: 0 12px 0 0;
        }

        .data-table tbody td {
            padding: 11px 14px;
            border-bottom: 1px solid var(--border);
            transition: background 0.2s;
            color: var(--fg-secondary);
        }

        .data-table tbody tr:hover td {
            background: var(--surface);
        }

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

        .toast {
            position: fixed;
            bottom: 30px;
            right: 30px;
            padding: 14px 22px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 14px;
            z-index: 9999;
            transform: translateY(100px);
            opacity: 0;
            transition: all 0.5s cubic-bezier(0.22, 1, 0.36, 1);
            display: flex;
            align-items: flex-start;
            gap: 10px;
            max-width: 520px;
            line-height: 1.5;
        }

        .toast.show {
            transform: translateY(0);
            opacity: 1;
        }

        .toast.success {
            background: #F0FDF4;
            border: 1px solid #BBF7D0;
            color: #16A34A;
        }

        .toast.error {
            background: #FEF2F2;
            border: 1px solid #FECACA;
            color: #DC2626;
        }

        .toast.warning {
            background: #FFFBEB;
            border: 1px solid #FDE68A;
            color: #B45309;
        }

        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            animation: fadeUp2 0.6s cubic-bezier(0.22, 1, 0.36, 1) forwards;
        }

        @keyframes fadeUp2 {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .fade-up:nth-child(2) {
            animation-delay: 0.08s;
        }

        .fade-up:nth-child(3) {
            animation-delay: 0.16s;
        }

        .fade-up:nth-child(4) {
            animation-delay: 0.24s;
        }

        .shimmer-line {
            height: 1px;
            background: var(--border);
        }

        #loadingScreen {
            position: fixed;
            inset: 0;
            z-index: 9998;
            background: var(--bg);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            transition: opacity 0.6s, visibility 0.6s;
        }

        #loadingScreen.hidden {
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
        }

        .loader-ring {
            width: 56px;
            height: 56px;
            border: 3px solid var(--border);
            border-top-color: var(--accent);
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
            margin-bottom: 24px;
        }

        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }

        .loader-bar {
            width: min(280px, calc(100vw - 48px));
            height: 4px;
            background: var(--border);
            border-radius: 4px;
            overflow: hidden;
            margin-bottom: 14px;
        }

        .loader-bar-inner {
            height: 100%;
            width: 0%;
            background: var(--accent);
            border-radius: 4px;
            transition: width 0.4s ease;
        }

        .error-box {
            max-width: 520px;
            text-align: center;
            padding: 32px;
            margin-top: 8px;
        }

        .error-box code {
            display: block;
            text-align: left;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 14px 18px;
            margin-top: 14px;
            font-size: 11.5px;
            color: var(--accent);
            line-height: 1.7;
            word-break: break-all;
        }

        .cabor-rank {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 6px;
            font-size: 11px;
            font-weight: 800;
        }

        .cabor-rank.r1 {
            background: var(--gold-dim);
            color: var(--gold);
        }

        .cabor-rank.r2 {
            background: var(--silver-dim);
            color: var(--silver);
        }

        .cabor-rank.r3 {
            background: var(--bronze-dim);
            color: var(--bronze);
        }

        .cabor-rank.rn {
            background: var(--surface);
            color: var(--muted);
        }

        #mainContent {
            padding-top: 24px !important;
        }

        button[id^="btn"] {
            border-radius: 6px !important;
            font-weight: 600 !important;
        }

        #btnBar,
        #btnLine {
            color: var(--muted) !important;
            background: transparent !important;
            border-color: var(--border) !important;
        }

        #btnBar:hover,
        #btnLine:hover {
            color: var(--fg) !important;
            background: var(--surface) !important;
        }

        #btnBar.active,
        #btnLine.active {
            color: var(--accent) !important;
            background: var(--accent-light) !important;
            border-color: transparent !important;
        }

        @media (max-width: 900px) {
            .stat-grid {
                grid-template-columns: 1fr 1fr !important;
            }

            .chart-grid {
                grid-template-columns: 1fr !important;
            }

            .dashboard-hero {
                padding-top: 104px;
            }
        }

        @media (max-width: 680px) {
            .navbar {
                padding: 12px 16px;
            }

            .nav-link {
                padding: 7px 10px;
                font-size: 12px;
            }

            .brand-title {
                font-size: 14px;
            }

            #navLinks {
                gap: 0 !important;
            }

            .dashboard-hero {
                padding: 96px 18px 24px;
            }

            #mainContent {
                padding-left: 18px !important;
                padding-right: 18px !important;
            }

            .glass-card {
                border-radius: 12px;
            }
        }

        @media (max-width: 480px) {
            .stat-grid {
                grid-template-columns: 1fr !important;
            }

            .tab-btn {
                flex: 1;
                text-align: center;
            }

            #tabContainer {
                flex-wrap: nowrap !important;
                min-width: max-content;
            }
        }

        @media (prefers-reduced-motion: reduce) {

            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
        }