:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --success: #16a34a;
    --danger: #dc2626;
    --border: #e2e8f0;
    --bg: #f8fafc;
    --text: #1e293b;
    --muted: #64748b;
    --radius: 8px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px 20px 60px;
}

h1 { font-size: 1.6rem; margin-bottom: 4px; }
h2 { font-size: 1.2rem; margin-top: 28px; }
h3 { font-size: 1rem; }

.muted { color: var(--muted); }

/* Topbar */
.topbar {
    background: #fff;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}
.topbar-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}
.brand { font-weight: 700; font-size: 1.1rem; color: var(--primary-dark); }
.nav { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.nav a { color: var(--text); text-decoration: none; font-size: 0.92rem; }
.nav a:hover { color: var(--primary); }
.nav-user { font-size: 0.85rem; color: var(--muted); }
.btn-logout { background: #f1f5f9; padding: 6px 12px; border-radius: var(--radius); }

/* Buttons */
.btn {
    display: inline-block;
    padding: 9px 16px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text);
    cursor: pointer;
    font-size: 0.9rem;
    text-decoration: none;
}
.btn:hover { background: #f1f5f9; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: #f1f5f9; }
.btn-danger { background: #fff; color: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-sm { padding: 5px 10px; font-size: 0.82rem; }
.btn-block { display: block; width: 100%; text-align: center; margin-top: 8px; }

/* Forms */
form label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin: 12px 0 4px;
}
form input[type=text],
form input[type=password],
form input[type=file],
form select,
form textarea {
    width: 100%;
    padding: 9px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.92rem;
    background: #fff;
}
form textarea { resize: vertical; }

.search-form { display: flex; gap: 10px; max-width: 500px; margin: 16px 0; }
.search-form input { flex: 1; }
.search-form-inline { display: flex; gap: 8px; margin: 10px 0; max-width: 400px; }
.search-form-inline input { flex: 1; padding: 7px 10px; border: 1px solid var(--border); border-radius: var(--radius); }

/* Login */
.login-wrap { display: flex; justify-content: center; padding-top: 60px; }
.login-card {
    background: #fff;
    padding: 32px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    width: 100%;
    max-width: 380px;
}

/* Alerts */
.alert { padding: 12px 16px; border-radius: var(--radius); margin-bottom: 16px; font-size: 0.9rem; }
.alert-success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.alert-error { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }

/* Table */
.table { width: 100%; border-collapse: collapse; margin-top: 12px; background: #fff; border-radius: var(--radius); overflow: hidden; }
.table th, .table td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; font-size: 0.88rem; }
.table th { background: #f1f5f9; font-weight: 600; }
.table tr:hover td { background: #fafbfc; }
.table-scroll { overflow-x: auto; }
.small-table th, .small-table td { white-space: nowrap; padding: 8px 10px; font-size: 0.8rem; }
.actions { display: flex; gap: 6px; }

/* Badges */
.badge { padding: 3px 10px; border-radius: 999px; font-size: 0.78rem; font-weight: 600; }
.badge-done { background: #dcfce7; color: #166534; }
.badge-pending { background: #fef3c7; color: #92400e; }
.badge-batch { background: #e0e7ff; color: #3730a3; }
.badge-round-done { background: #dcfce7; color: #166534; }
.badge-round-pending { background: #f1f5f9; color: #64748b; }

.round-buttons { display: flex; gap: 6px; flex-wrap: wrap; }
.round-btn { min-width: 44px; text-align: center; }
.round-switch { display: flex; align-items: center; gap: 6px; margin: 4px 0 20px; flex-wrap: wrap; }

/* Stat cards */
.stat-cards { display: flex; gap: 16px; margin: 16px 0 24px; flex-wrap: wrap; }
.stat-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 24px; min-width: 160px; }
.stat-num { font-size: 1.8rem; font-weight: 700; color: var(--primary-dark); }
.stat-label { color: var(--muted); font-size: 0.85rem; margin-top: 4px; }

.page-actions { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 6px; }

/* Two column layout */
.two-col { display: grid; grid-template-columns: 340px 1fr; gap: 28px; align-items: start; }
.col-form { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; position: sticky; top: 90px; }
@media (max-width: 900px) {
    .two-col { grid-template-columns: 1fr; }
    .col-form { position: static; }
}

/* Score form */
.score-group { border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 18px; margin-bottom: 16px; background: #fff; }
.score-group legend { font-weight: 700; padding: 0 6px; color: var(--primary-dark); }
.score-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 6px 0; }
.score-row label { margin: 0; font-weight: 500; flex: 1; }
.score-row select { width: 110px; }
.form-group { margin: 20px 0; }

.participant-info { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 18px; margin: 12px 0 20px; display: flex; gap: 24px; flex-wrap: wrap; }

.back-link { display: inline-block; margin-bottom: 10px; color: var(--primary); text-decoration: none; font-size: 0.88rem; }

.charts-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 20px 0 30px; }
.chart-box { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
@media (max-width: 800px) { .charts-row { grid-template-columns: 1fr; } }

.footer { text-align: center; color: var(--muted); font-size: 0.8rem; padding: 20px; }

hr { border: none; border-top: 1px solid var(--border); margin: 24px 0; }