@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Sans:ital,wght@0,300;0,400;0,500;1,300&display=swap');

:root {
  --bg:        #0a0e1a;
  --bg2:       #111827;
  --card:      #161d2e;
  --border:    #1e2d45;
  --accent:    #3b82f6;
  --accent2:   #06b6d4;
  --success:   #10b981;
  --warning:   #f59e0b;
  --danger:    #ef4444;
  --text:      #e2e8f0;
  --muted:     #64748b;
  --radius:    12px;
  --radius-lg: 20px;
  --shadow:    0 4px 24px rgba(0,0,0,.45);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Background mesh ── */
body::before {
  content: '';
  position: fixed; inset: 0; z-index: -1;
  background:
    radial-gradient(ellipse 60% 50% at 20% 10%, rgba(59,130,246,.12) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 90%, rgba(6,182,212,.10) 0%, transparent 60%);
  pointer-events: none;
}

/* ── Typography ── */
h1,h2,h3,h4 { font-family: 'Syne', sans-serif; font-weight: 700; line-height: 1.15; }

a { color: var(--accent); text-decoration: none; }
a:hover { opacity: .85; }

/* ── Layout ── */
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.page-wrap  { padding: 40px 0 80px; }

/* ── Navbar ── */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,14,26,.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
}
.navbar-inner {
  max-width: 1180px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.navbar-brand {
  font-family: 'Syne', sans-serif; font-size: 1.3rem; font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  letter-spacing: -.5px;
}
.navbar-brand span { -webkit-text-fill-color: var(--text); }
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a {
  padding: 8px 16px; border-radius: 8px; font-size: .9rem; font-weight: 500;
  color: var(--muted); transition: all .2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); background: var(--border); }
.nav-links .btn-nav {
  background: var(--accent); color: #fff !important;
  padding: 8px 18px;
}
.nav-links .btn-nav:hover { background: #2563eb; opacity: 1; }

/* ── Cards ── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow);
}
.card-sm { padding: 24px; border-radius: var(--radius); }
.card-header { margin-bottom: 24px; }
.card-header h2 { font-size: 1.5rem; }
.card-header p  { color: var(--muted); margin-top: 4px; font-size: .95rem; }

/* ── Forms ── */
.form-group { margin-bottom: 20px; }
.form-label { display: block; margin-bottom: 8px; font-size: .85rem; font-weight: 500; color: var(--muted); letter-spacing: .04em; text-transform: uppercase; }
.form-control {
  width: 100%; padding: 12px 16px;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text);
  font-family: 'DM Sans', sans-serif; font-size: .95rem;
  transition: border-color .2s, box-shadow .2s;
  outline: none;
}
.form-control:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(59,130,246,.15); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }

select.form-control { cursor: pointer; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 24px; border-radius: var(--radius);
  font-family: 'DM Sans', sans-serif; font-size: .95rem; font-weight: 500;
  border: none; cursor: pointer; transition: all .2s; text-decoration: none;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #2563eb; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(59,130,246,.35); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #059669; }
.btn-danger  { background: var(--danger); color: #fff; }
.btn-danger:hover  { background: #dc2626; }
.btn-ghost   { background: var(--border); color: var(--text); }
.btn-ghost:hover { background: var(--bg2); }
.btn-sm      { padding: 8px 16px; font-size: .85rem; }
.btn-full    { width: 100%; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none !important; }

/* ── Alerts ── */
.alert { padding: 14px 18px; border-radius: var(--radius); font-size: .9rem; margin-bottom: 20px; border-left: 4px solid; }
.alert-success { background: rgba(16,185,129,.12); border-color: var(--success); color: #34d399; }
.alert-danger  { background: rgba(239,68,68,.12);  border-color: var(--danger);  color: #f87171; }
.alert-warning { background: rgba(245,158,11,.12); border-color: var(--warning); color: #fbbf24; }
.alert-info    { background: rgba(59,130,246,.12); border-color: var(--accent);  color: #93c5fd; }

/* ── Badges ── */
.badge {
  display: inline-block; padding: 3px 10px; border-radius: 99px; font-size: .75rem; font-weight: 600; letter-spacing: .03em;
}
.badge-success  { background: rgba(16,185,129,.2);  color: var(--success); }
.badge-warning  { background: rgba(245,158,11,.2);  color: var(--warning); }
.badge-danger   { background: rgba(239,68,68,.2);   color: var(--danger); }
.badge-info     { background: rgba(59,130,246,.2);  color: var(--accent); }
.badge-morning  { background: rgba(251,191,36,.15); color: #fbbf24; }
.badge-afternoon{ background: rgba(6,182,212,.15);  color: var(--accent2); }

/* ── Tables ── */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th { background: var(--bg2); padding: 12px 16px; text-align: left; font-size: .78rem; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
td { padding: 13px 16px; border-top: 1px solid var(--border); vertical-align: middle; }
tr:hover td { background: rgba(255,255,255,.025); }

/* ── Stats grid ── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 32px; }
.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 24px; }
.stat-label { font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin-bottom: 6px; }
.stat-value { font-family: 'Syne', sans-serif; font-size: 2rem; font-weight: 700; line-height: 1; }
.stat-value.blue  { color: var(--accent); }
.stat-value.green { color: var(--success); }
.stat-value.yellow{ color: var(--warning); }
.stat-value.cyan  { color: var(--accent2); }

/* ── Auth page ── */
.auth-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 24px; }
.auth-card { width: 100%; max-width: 460px; }
.auth-logo { text-align: center; margin-bottom: 32px; }
.auth-logo h1 { font-size: 2rem; background: linear-gradient(135deg, var(--accent), var(--accent2)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.auth-logo p  { color: var(--muted); font-size: .95rem; margin-top: 4px; }

/* ── QR section ── */
.qr-wrap {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 32px; gap: 16px; text-align: center;
}
.qr-wrap img { border-radius: var(--radius); border: 6px solid var(--border); max-width: 240px; }
.qr-info { font-size: .85rem; color: var(--muted); }

/* ── Session pill ── */
.session-pills { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 24px; }
.session-pill {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 20px; border-radius: 99px; font-size: .85rem; font-weight: 500;
  border: 1px solid var(--border); background: var(--bg2);
}
.session-pill.active-morning   { border-color: #fbbf24; color: #fbbf24; background: rgba(251,191,36,.08); }
.session-pill.active-afternoon { border-color: var(--accent2); color: var(--accent2); background: rgba(6,182,212,.08); }
.session-pill .dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; }

/* ── Page title ── */
.page-title { margin-bottom: 32px; }
.page-title h1 { font-size: 2rem; }
.page-title p   { color: var(--muted); margin-top: 6px; }

/* ── Divider ── */
.divider { border: none; border-top: 1px solid var(--border); margin: 24px 0; }

/* ── Utilities ── */
.text-muted { color: var(--muted); }
.text-center{ text-align: center; }
.mt-auto    { margin-top: auto; }
.mb-0       { margin-bottom: 0; }
.gap-2      { gap: 8px; }
.flex       { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap  { flex-wrap: wrap; }