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

:root {
  --bg: #f5f6fa;
  --surface: #ffffff;
  --border: #e0e4ef;
  --primary: #4361ee;
  --primary-dark: #3a56d4;
  --danger: #ef233c;
  --success: #2ec4b6;
  --warn: #f4a261;
  --text: #1a1a2e;
  --muted: #6b7280;
  --radius: 8px;
  --shadow: 0 1px 4px rgba(0,0,0,0.08);
  --nav-w: 220px;
}

body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.5; }

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Layout ── */
.layout { display: flex; min-height: 100vh; }

nav.sidebar {
  width: var(--nav-w); background: var(--surface); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; position: fixed; top: 0; left: 0; bottom: 0; z-index: 100;
}

nav.sidebar .logo {
  padding: 20px 16px 14px; font-size: 16px; font-weight: 700; color: var(--primary); border-bottom: 1px solid var(--border);
}

nav.sidebar ul { list-style: none; padding: 8px 0; flex: 1; }
nav.sidebar ul li a {
  display: flex; align-items: center; gap: 8px; padding: 9px 16px;
  color: var(--text); border-left: 3px solid transparent; transition: background .15s;
}
nav.sidebar ul li a:hover { background: var(--bg); text-decoration: none; }
nav.sidebar ul li a.active { border-left-color: var(--primary); color: var(--primary); background: #eef1ff; font-weight: 600; }

nav.sidebar .nav-footer { padding: 12px 16px; border-top: 1px solid var(--border); font-size: 12px; color: var(--muted); }
nav.sidebar .nav-footer .username { font-weight: 600; color: var(--text); }
nav.sidebar .nav-footer .logout-btn { cursor: pointer; color: var(--danger); background: none; border: none; font-size: 12px; padding: 0; margin-top: 4px; display: block; }
nav.sidebar .nav-footer .logout-btn:hover { text-decoration: underline; }

main.content { margin-left: var(--nav-w); flex: 1; padding: 28px 32px; max-width: 1200px; }

/* ── Cards & Panels ── */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 20px; box-shadow: var(--shadow); }
.card h2 { font-size: 16px; font-weight: 600; margin-bottom: 14px; }

.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.page-header h1 { font-size: 22px; font-weight: 700; }

/* ── Buttons ── */
btn, .btn { display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: var(--radius); border: none; cursor: pointer; font-size: 13px; font-weight: 500; transition: opacity .15s; }
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: var(--radius); border: none; cursor: pointer; font-size: 13px; font-weight: 500; transition: opacity .15s; }
.btn:hover { opacity: .85; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-ghost { background: transparent; color: var(--primary); border: 1px solid var(--primary); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-icon { padding: 5px 8px; }

/* ── Forms ── */
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 12px; font-weight: 600; color: var(--muted); margin-bottom: 4px; text-transform: uppercase; letter-spacing: .4px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px;
  font-size: 14px; color: var(--text); background: var(--bg); transition: border .15s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--primary); background: #fff;
}
.form-row { display: flex; gap: 14px; }
.form-row .form-group { flex: 1; }

/* ── Tables ── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; padding: 8px 12px; background: var(--bg); border-bottom: 2px solid var(--border); font-weight: 600; font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .4px; }
td { padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: #fafbff; }

/* ── Badges ── */
.badge { display: inline-block; padding: 2px 8px; border-radius: 99px; font-size: 11px; font-weight: 600; }
.badge-green { background: #d1fae5; color: #065f46; }
.badge-red { background: #fee2e2; color: #991b1b; }
.badge-blue { background: #dbeafe; color: #1e40af; }
.badge-gray { background: #f3f4f6; color: #374151; }
.badge-warn { background: #fef3c7; color: #92400e; }

/* ── Gap colors ── */
.gap-pos { color: #059669; font-weight: 600; }
.gap-zero { color: var(--muted); }
.gap-neg { color: var(--danger); font-weight: 600; }

/* ── Stars / level selector ── */
.level-picker { display: flex; gap: 4px; }
.level-picker input[type=radio] { display: none; }
.level-picker label { width: 28px; height: 28px; border-radius: 50%; border: 2px solid var(--border); cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; color: var(--muted); transition: all .15s; }
.level-picker input[type=radio]:checked + label { background: var(--primary); border-color: var(--primary); color: #fff; }
.level-picker label:hover { border-color: var(--primary); color: var(--primary); }

/* ── Score input row ── */
.score-row { display: flex; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.score-row:last-child { border-bottom: none; }
.score-row .comp-name { flex: 1; }
.score-row .comp-group { font-size: 11px; color: var(--muted); }

/* ── Modal ── */
.modal-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,.35); display: flex; align-items: center; justify-content: center; z-index: 999; }
.modal { background: var(--surface); border-radius: var(--radius); padding: 24px; width: 480px; max-width: 95vw; max-height: 90vh; overflow-y: auto; box-shadow: 0 8px 32px rgba(0,0,0,.15); }
.modal h3 { font-size: 16px; font-weight: 700; margin-bottom: 16px; }
.modal-footer { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }
.modal.hidden, .hidden { display: none !important; }

/* ── Login ── */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--bg); }
.login-box { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 36px 32px; width: 360px; box-shadow: var(--shadow); }
.login-box h1 { font-size: 22px; font-weight: 700; margin-bottom: 6px; color: var(--primary); }
.login-box p { color: var(--muted); font-size: 13px; margin-bottom: 24px; }
.login-box .error { color: var(--danger); font-size: 13px; margin-top: 8px; }

/* ── Accordion (models builder) ── */
.accordion { border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 12px; overflow: hidden; }
.accordion-header { padding: 12px 16px; background: var(--bg); display: flex; align-items: center; gap: 8px; cursor: pointer; font-weight: 600; }
.accordion-header:hover { background: #eef1ff; }
.accordion-body { padding: 0 16px 16px; }
.accordion-body.collapsed { display: none; }

.comp-item { display: flex; align-items: center; gap: 8px; padding: 8px 0; border-bottom: 1px solid var(--border); }
.comp-item:last-child { border-bottom: none; }
.comp-item .comp-label { flex: 1; }
.comp-actions { display: flex; gap: 4px; }

/* ── Radar container ── */
.radar-wrap { display: flex; justify-content: center; align-items: center; padding: 10px 0; }
canvas#radarChart { max-width: 420px; }

/* ── Misc ── */
.empty { color: var(--muted); text-align: center; padding: 40px 0; font-size: 14px; }
.error-msg { color: var(--danger); font-size: 13px; padding: 4px 0; }
.loading { color: var(--muted); font-size: 13px; padding: 20px 0; text-align: center; }
.flex { display: flex; gap: 8px; }
.flex-center { display: flex; align-items: center; gap: 8px; }
.ml-auto { margin-left: auto; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mb-8 { margin-bottom: 8px; }
.text-muted { color: var(--muted); }
.text-sm { font-size: 12px; }