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

:root {
    --bg: #0f0f14;
    --bg-card: #1a1a24;
    --bg-card-hover: #22223a;
    --bg-input: #14141e;
    --border: #2a2a3e;
    --text: #e4e4ed;
    --text-dim: #8888a0;
    --accent: #6366f1;
    --accent-glow: rgba(99,102,241,0.3);
    --gold: #fbbf24;
    --silver: #94a3b8;
    --bronze: #d97706;
    --success: #22c55e;
    --danger: #ef4444;
    --radius: 12px;
    --radius-sm: 8px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.5;
}

/* Navbar */
.navbar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 24px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16162a 100%);
    border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 100;
    backdrop-filter: blur(20px);
}
.navbar-brand { display: flex; align-items: center; gap: 12px; font-size: 20px; font-weight: 700; }
.navbar-brand .logo { width: 36px; height: 36px; background: var(--accent); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 18px; }
.navbar-links { display: flex; gap: 8px; }
.navbar-links a {
    padding: 8px 16px; border-radius: var(--radius-sm);
    color: var(--text-dim); text-decoration: none; font-size: 14px; font-weight: 500;
    transition: all 0.2s;
}
.navbar-links a:hover, .navbar-links a.active { color: var(--text); background: var(--bg-card); }

/* Layout */
.container { max-width: 1200px; margin: 0 auto; padding: 24px; }
.page-header { margin-bottom: 32px; }
.page-header h1 { font-size: 28px; font-weight: 700; margin-bottom: 4px; }
.page-header p { color: var(--text-dim); font-size: 14px; }

/* Cards */
.card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 24px;
    transition: all 0.2s;
}
.card:hover { border-color: rgba(99,102,241,0.3); }
.card-title { font-size: 16px; font-weight: 600; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }

/* Stats Grid */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 32px; }
.stat-card { text-align: center; padding: 20px; }
.stat-value { font-size: 32px; font-weight: 800; background: linear-gradient(135deg, var(--accent), #a78bfa); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.stat-label { font-size: 12px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 1px; margin-top: 4px; }

/* Filters */
.filters { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 24px; }
.filter-group { display: flex; flex-direction: column; gap: 4px; }
.filter-group label { font-size: 11px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 1px; }
select, input[type="text"], input[type="number"], input[type="password"] {
    background: var(--bg-input); border: 1px solid var(--border); color: var(--text);
    padding: 10px 14px; border-radius: var(--radius-sm); font-size: 14px;
    outline: none; transition: border-color 0.2s; min-width: 160px;
}
select:focus, input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 10px 20px; border-radius: var(--radius-sm);
    font-size: 14px; font-weight: 600; cursor: pointer; border: none;
    transition: all 0.2s; text-decoration: none;
}
.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover { background: #5558e6; box-shadow: 0 4px 20px var(--accent-glow); }
.btn-secondary { background: var(--bg-card); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--bg-card-hover); }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: #dc2626; }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-icon { width: 36px; height: 36px; padding: 0; display: flex; align-items: center; justify-content: center; border-radius: 8px; }

/* Leaderboard */
.leaderboard { display: flex; flex-direction: column; gap: 8px; }
.leaderboard-item {
    display: grid; grid-template-columns: 50px 1fr auto;
    align-items: center; gap: 16px;
    padding: 16px 20px; background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); transition: all 0.3s;
}
.leaderboard-item:hover { transform: translateX(4px); border-color: rgba(99,102,241,0.3); }
.leaderboard-item.rank-1 { border-color: var(--gold); background: linear-gradient(135deg, rgba(251,191,36,0.08), var(--bg-card)); }
.leaderboard-item.rank-2 { border-color: var(--silver); background: linear-gradient(135deg, rgba(148,163,184,0.06), var(--bg-card)); }
.leaderboard-item.rank-3 { border-color: var(--bronze); background: linear-gradient(135deg, rgba(217,119,6,0.06), var(--bg-card)); }

.rank {
    width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 16px; background: var(--bg-input); border: 2px solid var(--border);
}
.rank-1 .rank { background: linear-gradient(135deg, #fbbf24, #f59e0b); color: #1a1a24; border-color: #fbbf24; }
.rank-2 .rank { background: linear-gradient(135deg, #94a3b8, #64748b); color: #1a1a24; border-color: #94a3b8; }
.rank-3 .rank { background: linear-gradient(135deg, #d97706, #b45309); color: #1a1a24; border-color: #d97706; }

.member-info { display: flex; align-items: center; gap: 14px; }
.avatar {
    width: 44px; height: 44px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 18px; color: white; flex-shrink: 0;
}
.member-name { font-weight: 600; font-size: 15px; }
.member-dept { font-size: 12px; color: var(--text-dim); }

.scores-grid { display: flex; gap: 20px; }
.score-item { text-align: center; }
.score-label { font-size: 10px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.5px; }
.score-value { font-size: 18px; font-weight: 700; }
.score-media { color: var(--accent); font-size: 22px; }

/* Podium */
.podium { display: flex; justify-content: center; align-items: flex-end; gap: 16px; margin-bottom: 40px; padding: 20px 0; }
.podium-item { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.podium-bar {
    width: 120px; border-radius: 12px 12px 0 0; display: flex; flex-direction: column;
    align-items: center; justify-content: flex-end; padding: 20px 12px;
    transition: all 0.5s;
}
.podium-1 .podium-bar { height: 180px; background: linear-gradient(180deg, rgba(251,191,36,0.2), rgba(251,191,36,0.05)); border: 1px solid rgba(251,191,36,0.3); }
.podium-2 .podium-bar { height: 140px; background: linear-gradient(180deg, rgba(148,163,184,0.15), rgba(148,163,184,0.03)); border: 1px solid rgba(148,163,184,0.2); }
.podium-3 .podium-bar { height: 110px; background: linear-gradient(180deg, rgba(217,119,6,0.15), rgba(217,119,6,0.03)); border: 1px solid rgba(217,119,6,0.2); }
.podium-avatar { width: 56px; height: 56px; border-radius: 50%; font-size: 22px; font-weight: 700; display: flex; align-items: center; justify-content: center; color: white; border: 3px solid; }
.podium-1 .podium-avatar { border-color: var(--gold); }
.podium-2 .podium-avatar { border-color: var(--silver); }
.podium-3 .podium-avatar { border-color: var(--bronze); }
.podium-name { font-weight: 600; font-size: 14px; text-align: center; }
.podium-score { font-size: 24px; font-weight: 800; }
.podium-1 .podium-score { color: var(--gold); }
.podium-2 .podium-score { color: var(--silver); }
.podium-3 .podium-score { color: var(--bronze); }

/* Dept badges */
.dept-badge {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 3px 10px; border-radius: 20px; font-size: 11px; font-weight: 600;
    background: rgba(99,102,241,0.15); color: var(--accent); border: 1px solid rgba(99,102,241,0.25);
}

/* Table */
.table-wrapper { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th { text-align: left; font-size: 11px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 1px; padding: 12px 16px; border-bottom: 1px solid var(--border); }
td { padding: 14px 16px; border-bottom: 1px solid rgba(42,42,62,0.5); font-size: 14px; }
tr:hover td { background: rgba(99,102,241,0.03); }

/* Score Input */
.score-input-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
.score-card {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px;
}
.score-card-header { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.score-inputs { display: flex; flex-direction: column; gap: 10px; }
.score-row { display: flex; align-items: center; gap: 12px; }
.score-row label { width: 120px; font-size: 13px; color: var(--text-dim); }
.score-row input { flex: 1; }
.score-row .val { font-weight: 700; width: 50px; text-align: right; font-size: 15px; }
input[type="range"] {
    -webkit-appearance: none; height: 6px; background: var(--border); border-radius: 3px; outline: none; flex: 1;
}
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none; width: 18px; height: 18px; border-radius: 50%;
    background: var(--accent); cursor: pointer; box-shadow: 0 0 10px var(--accent-glow);
}

/* Modal */
.modal-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.7); display: flex;
    align-items: center; justify-content: center; z-index: 200; backdrop-filter: blur(4px);
}
.modal {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px;
    padding: 32px; width: 90%; max-width: 500px;
}
.modal h2 { font-size: 20px; margin-bottom: 20px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; color: var(--text-dim); margin-bottom: 6px; }
.form-group input, .form-group select { width: 100%; }
.form-actions { display: flex; gap: 12px; justify-content: flex-end; margin-top: 24px; }
.checkbox-group { display: flex; flex-wrap: wrap; gap: 8px; }
.checkbox-item {
    display: flex; align-items: center; gap: 6px; padding: 6px 12px;
    background: var(--bg-input); border: 1px solid var(--border); border-radius: 8px;
    cursor: pointer; font-size: 13px;
}
.checkbox-item input { accent-color: var(--accent); }

/* Tabs */
.tabs { display: flex; gap: 4px; margin-bottom: 24px; background: var(--bg-input); border-radius: var(--radius); padding: 4px; }
.tab {
    padding: 10px 20px; border-radius: var(--radius-sm); cursor: pointer;
    font-size: 14px; font-weight: 500; color: var(--text-dim); transition: all 0.2s; border: none; background: none;
}
.tab.active { background: var(--accent); color: white; }
.tab:hover:not(.active) { color: var(--text); background: var(--bg-card); }

/* Auth screen */
.auth-screen {
    display: flex; align-items: center; justify-content: center; min-height: calc(100vh - 65px);
}
.auth-card { text-align: center; max-width: 380px; width: 100%; }
.auth-card .logo-big { width: 80px; height: 80px; background: var(--accent); border-radius: 20px; display: flex; align-items: center; justify-content: center; font-size: 36px; margin: 0 auto 24px; }
.auth-card h2 { font-size: 24px; margin-bottom: 8px; }
.auth-card p { color: var(--text-dim); margin-bottom: 24px; }
.auth-card input { width: 100%; text-align: center; font-size: 24px; letter-spacing: 8px; padding: 16px; margin-bottom: 16px; }
.auth-error { color: var(--danger); font-size: 13px; margin-bottom: 12px; display: none; }

/* Toast */
.toast {
    position: fixed; bottom: 24px; right: 24px; padding: 14px 24px;
    background: var(--success); color: white; border-radius: var(--radius-sm);
    font-weight: 600; font-size: 14px; z-index: 300;
    animation: slideUp 0.3s ease;
}
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } }

/* Empty state */
.empty-state { text-align: center; padding: 60px 20px; color: var(--text-dim); }
.empty-state .icon { font-size: 48px; margin-bottom: 16px; opacity: 0.5; }
.empty-state p { font-size: 15px; }

/* Mobile */
@media (max-width: 768px) {
    .container { padding: 16px; }
    .podium { gap: 8px; }
    .podium-bar { width: 90px; }
    .scores-grid { flex-wrap: wrap; gap: 12px; }
    .leaderboard-item { grid-template-columns: 40px 1fr; }
    .leaderboard-item .scores-grid { grid-column: 1 / -1; }
    .navbar { padding: 12px 16px; }
    .navbar-links a { padding: 6px 10px; font-size: 13px; }
    .filters { flex-direction: column; }
    select, input { min-width: unset; width: 100%; }
    .score-input-grid { grid-template-columns: 1fr; }
}

/* Animations */
.fade-in { animation: fadeIn 0.4s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } }
.hidden { display: none !important; }