/* ============================================================
   Interview Management System — Global Styles
   ============================================================ */

:root {
  --dark:       #0F172A;
  --mid:        #1E3A5F;
  --accent:     #0EA5E9;
  --accent-d:   #0284C7;
  --light:      #F0F9FF;
  --white:      #FFFFFF;
  --muted:      #64748B;
  --success:    #059669;
  --warning:    #D97706;
  --danger:     #DC2626;
  --text:       #1E293B;
  --card:       #F8FAFC;
  --border:     #E2E8F0;
  --sidebar-w:  260px;
  --radius:     8px;
  --shadow:     0 1px 4px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.06);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 14px;
  color: var(--text);
  background: #F1F5F9;
  min-height: 100vh;
}

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

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

.sidebar {
  width: var(--sidebar-w);
  background: var(--dark);
  color: #CBD5E1;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  overflow-y: auto;
}

.sidebar-logo {
  padding: 20px 20px 16px;
  border-bottom: 1px solid #1E3A5F;
}
.sidebar-logo h1 {
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
  line-height: 1.3;
}
.sidebar-logo span { color: var(--accent); }

.sidebar-user {
  padding: 14px 20px;
  border-bottom: 1px solid #1E3A5F;
  font-size: 12px;
  color: #94A3B8;
}
.sidebar-user strong { display: block; color: var(--white); font-size: 13px; margin-bottom: 2px; }

.nav-section {
  padding: 12px 0 4px;
}
.nav-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .08em;
  color: #475569;
  padding: 0 20px 6px;
  text-transform: uppercase;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 20px;
  color: #94A3B8;
  font-size: 13px;
  cursor: pointer;
  transition: background .15s, color .15s;
  text-decoration: none;
}
.nav-item:hover, .nav-item.active {
  background: #1E3A5F;
  color: var(--white);
  text-decoration: none;
}
.nav-item.active { border-left: 3px solid var(--accent); padding-left: 17px; }
.nav-item svg { width: 16px; height: 16px; flex-shrink: 0; }

.sidebar-footer {
  margin-top: auto;
  padding: 16px 20px;
  border-top: 1px solid #1E3A5F;
}

.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.topbar {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 0 28px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}
.topbar-title { font-size: 16px; font-weight: 600; color: var(--dark); }
.topbar-actions { display: flex; align-items: center; gap: 12px; }

.page-content { padding: 28px; flex: 1; }

/* ── Cards ── */
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-header h2 { font-size: 15px; font-weight: 600; color: var(--dark); }
.card-body { padding: 20px; }

/* ── Stat cards ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow);
}
.stat-card .label { font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.stat-card .value { font-size: 28px; font-weight: 700; color: var(--dark); }
.stat-card .sub   { font-size: 11px; color: var(--muted); margin-top: 4px; }
.stat-card.accent .value { color: var(--accent-d); }
.stat-card.success .value { color: var(--success); }
.stat-card.warning .value { color: var(--warning); }
.stat-card.danger  .value { color: var(--danger); }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: opacity .15s, background .15s;
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { opacity: .88; text-decoration: none; }
.btn-primary   { background: var(--accent-d); color: var(--white); }
.btn-success   { background: var(--success);  color: var(--white); }
.btn-danger    { background: var(--danger);   color: var(--white); }
.btn-warning   { background: var(--warning);  color: var(--white); }
.btn-outline   { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { background: var(--card); }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-lg { padding: 11px 22px; font-size: 15px; }

/* ── Tables ── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
  background: #F8FAFC;
  padding: 10px 14px;
  text-align: left;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
tbody td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: middle;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: #F8FAFC; }

/* ── Badges ── */
.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 600;
}
.badge-blue    { background: #DBEAFE; color: #1D4ED8; }
.badge-green   { background: #D1FAE5; color: #065F46; }
.badge-yellow  { background: #FEF3C7; color: #92400E; }
.badge-red     { background: #FEE2E2; color: #991B1B; }
.badge-purple  { background: #EDE9FE; color: #5B21B6; }
.badge-gray    { background: #F1F5F9; color: #475569; }

/* ── Forms ── */
.form-group  { margin-bottom: 18px; }
.form-row    { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-row-3  { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
label        { display: block; font-size: 12px; font-weight: 600; color: var(--muted); margin-bottom: 5px; letter-spacing:.03em; text-transform:uppercase; }
input[type=text], input[type=email], input[type=password], input[type=date],
input[type=time], input[type=number], select, textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  color: var(--text);
  background: var(--white);
  transition: border-color .15s, box-shadow .15s;
  outline: none;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(14,165,233,.12);
}
textarea { resize: vertical; min-height: 80px; }
.form-hint { font-size: 11px; color: var(--muted); margin-top: 4px; }
.form-error { font-size: 11px; color: var(--danger); margin-top: 4px; }

/* ── Alerts ── */
.alert {
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 13px;
  margin-bottom: 16px;
  border-left: 4px solid;
}
.alert-success { background: #F0FDF4; border-color: var(--success); color: #166534; }
.alert-danger  { background: #FEF2F2; border-color: var(--danger);  color: #991B1B; }
.alert-warning { background: #FFFBEB; border-color: var(--warning); color: #92400E; }
.alert-info    { background: #F0F9FF; border-color: var(--accent);  color: #075985; }

/* ── Score slider ── */
.score-slider-wrap { display: flex; align-items: center; gap: 14px; }
.score-slider {
  -webkit-appearance: none;
  flex: 1;
  height: 6px;
  border-radius: 3px;
  background: var(--border);
  outline: none;
}
.score-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--accent-d);
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0,0,0,.2);
}
.score-value-display {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent-d);
  min-width: 44px;
  text-align: center;
}

/* ── Misc ── */
.page-header { margin-bottom: 24px; }
.page-header h1 { font-size: 22px; font-weight: 700; color: var(--dark); }
.page-header p  { color: var(--muted); font-size: 13px; margin-top: 4px; }

.empty-state { text-align: center; padding: 48px 20px; color: var(--muted); }
.empty-state svg { width: 48px; height: 48px; margin-bottom: 12px; opacity: .35; }
.empty-state h3  { font-size: 15px; font-weight: 600; color: var(--text); margin-bottom: 6px; }

.divider { border: none; border-top: 1px solid var(--border); margin: 20px 0; }

.text-muted   { color: var(--muted); }
.text-success { color: var(--success); }
.text-danger  { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-accent  { color: var(--accent-d); }
.fw-600 { font-weight: 600; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }

/* ── Login page ── */
.login-page {
  min-height: 100vh;
  background: var(--dark);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.login-card {
  background: var(--white);
  border-radius: 12px;
  padding: 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 20px 60px rgba(0,0,0,.3);
}
.login-logo { text-align: center; margin-bottom: 28px; }
.login-logo h1 { font-size: 20px; font-weight: 700; color: var(--dark); }
.login-logo span { color: var(--accent-d); }
.login-logo p { font-size: 12px; color: var(--muted); margin-top: 4px; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); transition: transform .25s; }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .form-row, .form-row-3 { grid-template-columns: 1fr; }
}