:root {
  --brand: #0b5fff;
  --brand-dark: #08348c;
  --bg: #f4f6fb;
  --card-bg: #ffffff;
  --text: #1c2333;
  --muted: #6b7280;
  --border: #e5e8f0;
  --danger: #d64545;
  --danger-bg: #fdecec;
  --success: #1f9d55;
  --warning: #b7791f;
  --warning-bg: #fdf3dc;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Segoe UI', Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

a { color: var(--brand); text-decoration: none; }

/* ---------- Login page ---------- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.login-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: 0 10px 30px rgba(20, 30, 60, 0.08);
  padding: 40px 36px;
  width: 100%;
  max-width: 380px;
}
.login-card h1 {
  font-size: 22px;
  margin: 0 0 4px;
  color: var(--brand-dark);
}
.login-card p.sub { color: var(--muted); margin: 0 0 28px; font-size: 14px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.field input {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
}
.field input:focus { outline: none; border-color: var(--brand); }
.btn {
  display: inline-block;
  width: 100%;
  padding: 12px;
  background: var(--brand);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}
.btn:hover { background: var(--brand-dark); }
.alert {
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 18px;
}
.alert-error { background: var(--danger-bg); color: var(--danger); }

/* ---------- App shell ---------- */
.app { display: flex; min-height: 100vh; }
.sidebar {
  width: 230px;
  background: var(--brand-dark);
  color: #fff;
  padding: 24px 0;
  flex-shrink: 0;
}
.sidebar .brand { padding: 0 24px 24px; font-weight: 700; font-size: 18px; border-bottom: 1px solid rgba(255,255,255,.12); margin-bottom: 12px; }
.sidebar nav a {
  display: block;
  padding: 12px 24px;
  color: rgba(255,255,255,.85);
  font-size: 14px;
}
.sidebar nav a.active, .sidebar nav a:hover { background: rgba(255,255,255,.08); color: #fff; }
.main { flex: 1; padding: 28px 32px; }
.topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.topbar h2 { margin: 0; font-size: 20px; }
.topbar .who { font-size: 14px; color: var(--muted); }

.grid { display: grid; grid-template-columns: 2fr 1fr; gap: 20px; }
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.card h3 { margin: 0 0 14px; font-size: 15px; color: var(--brand-dark); }

.report-row { display: flex; justify-content: space-between; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--border); }
.report-row:last-child { border-bottom: none; }
.report-row .date { font-weight: 600; font-size: 14px; }
.report-row .calls { font-size: 12px; color: var(--muted); }

.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.badge-ok { background: #e9f9ef; color: var(--success); }
.badge-locked { background: var(--danger-bg); color: var(--danger); }
.badge-renew { background: var(--warning-bg); color: var(--warning); }

.balance-amount { font-size: 28px; font-weight: 700; color: var(--brand-dark); }
.balance-sub { font-size: 13px; color: var(--muted); margin-top: 4px; }

.lock-message {
  background: var(--danger-bg);
  color: var(--danger);
  padding: 16px 18px;
  border-radius: var(--radius);
  font-size: 14px;
  margin-bottom: 20px;
}

.renew-message {
  background: var(--warning-bg);
  color: var(--warning);
  padding: 16px 18px;
  border-radius: var(--radius);
  font-size: 14px;
  margin-bottom: 20px;
}

/* calendar */
#calendar { width: 100%; }
.cal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; text-align: center; font-size: 13px; }
.cal-grid .dow { font-weight: 600; color: var(--muted); padding: 6px 0; }
.cal-grid button {
  padding: 8px 0;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
}
.cal-grid button.has-report { border-color: var(--brand); color: var(--brand); font-weight: 600; }
.cal-grid button.empty-cell { visibility: hidden; }
.cal-grid button:disabled { color: #cbd0da; cursor: default; }

@media (max-width: 800px) {
  .app { flex-direction: column; }
  .sidebar { width: 100%; }
  .grid { grid-template-columns: 1fr; }
}