/* ── Google Fonts ─────────────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ── Design Tokens ────────────────────────────────────────────────────────── */
:root {
  --bg:          #0f172a;
  --surface:     #1e293b;
  --surface2:    #263348;
  --glass:       rgba(255,255,255,0.05);
  --glass-border:rgba(255,255,255,0.10);
  --primary:     #0ea5e9;
  --primary-dark:#0284c7;
  --cyan:        #06b6d4;
  --violet:      #8b5cf6;
  --success:     #22c55e;
  --warning:     #f59e0b;
  --danger:      #ef4444;
  --text:        #f1f5f9;
  --text-muted:  #94a3b8;
  --text-dim:    #64748b;
  --sidebar-w:   240px;
  --radius:      12px;
  --radius-sm:   8px;
  --shadow:      0 4px 24px rgba(0,0,0,0.4);
  --transition:  0.2s ease;
}

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

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* ── Sidebar ──────────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  min-height: 100vh;
  background: var(--surface);
  border-right: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
  position: fixed;
  top: 0; left: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px 24px;
  border-bottom: 1px solid var(--glass-border);
  margin-bottom: 16px;
}

.sidebar-logo .logo-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}

.sidebar-logo .logo-text { font-size: 15px; font-weight: 600; line-height: 1.3; }
.sidebar-logo .logo-sub  { font-size: 11px; color: var(--text-muted); font-weight: 400; }

.nav-section { font-size: 10px; font-weight: 600; color: var(--text-dim);
  text-transform: uppercase; letter-spacing: 1px; padding: 8px 12px 4px; }

.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px; border-radius: var(--radius-sm);
  color: var(--text-muted); font-size: 14px; font-weight: 500;
  transition: var(--transition); margin-bottom: 2px;
}
.nav-item:hover  { background: var(--glass); color: var(--text); }
.nav-item.active { background: linear-gradient(135deg, rgba(14,165,233,.2), rgba(6,182,212,.1));
  color: var(--primary); border: 1px solid rgba(14,165,233,.2); }
.nav-item .icon  { font-size: 18px; width: 22px; text-align: center; }

.sidebar-footer {
  margin-top: auto; padding-top: 16px; border-top: 1px solid var(--glass-border);
}
.status-badge {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px; background: var(--glass); border-radius: var(--radius-sm);
  font-size: 12px; color: var(--text-muted);
}
.status-dot { width: 8px; height: 8px; border-radius: 50%;
  background: var(--success); box-shadow: 0 0 8px var(--success); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.5} }

/* ── Main Content ─────────────────────────────────────────────────────────── */
.main {
  margin-left: var(--sidebar-w);
  flex: 1; padding: 32px;
  min-height: 100vh;
}

.page-header { margin-bottom: 32px; }
.page-title  { font-size: 26px; font-weight: 700; margin-bottom: 4px; }
.page-sub    { font-size: 14px; color: var(--text-muted); }

/* ── Cards ────────────────────────────────────────────────────────────────── */
.card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
  padding: 24px;
}
.card-title { font-size: 14px; font-weight: 600; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: .5px; margin-bottom: 12px; }

/* ── Stats Grid ───────────────────────────────────────────────────────────── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px; margin-bottom: 24px; }

.stat-card {
  background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: var(--radius); padding: 20px 24px;
  display: flex; align-items: center; gap: 16px;
  transition: var(--transition);
}
.stat-card:hover { border-color: var(--primary); transform: translateY(-2px); }
.stat-icon { width: 48px; height: 48px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center; font-size: 22px; flex-shrink: 0; }
.stat-icon.blue   { background: rgba(14,165,233,.15); }
.stat-icon.cyan   { background: rgba(6,182,212,.15); }
.stat-icon.violet { background: rgba(139,92,246,.15); }
.stat-icon.green  { background: rgba(34,197,94,.15); }
.stat-value { font-size: 28px; font-weight: 700; line-height: 1; }
.stat-label { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 10px 20px; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 600; border: none; transition: var(--transition);
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  color: #fff; box-shadow: 0 4px 16px rgba(14,165,233,.3);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(14,165,233,.4); }
.btn-secondary { background: var(--glass); border: 1px solid var(--glass-border); color: var(--text); }
.btn-secondary:hover { background: var(--surface2); }
.btn-danger { background: rgba(239,68,68,.15); border: 1px solid rgba(239,68,68,.3); color: var(--danger); }
.btn-danger:hover { background: rgba(239,68,68,.25); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none !important; }
.btn-lg { padding: 14px 28px; font-size: 15px; border-radius: 10px; }
.btn-sm { padding: 7px 14px; font-size: 13px; }

/* ── Form ─────────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 13px; font-weight: 500; color: var(--text-muted);
  margin-bottom: 6px; }
.form-control {
  width: 100%; padding: 10px 14px;
  background: var(--surface); border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm); color: var(--text); font-size: 14px;
  transition: var(--transition);
}
.form-control:focus { outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(14,165,233,.15); }

/* ── Camera Preview ───────────────────────────────────────────────────────── */
.camera-wrap {
  position: relative; border-radius: var(--radius); overflow: hidden;
  background: #000; aspect-ratio: 4/3; max-width: 520px;
}
.camera-wrap video, .camera-wrap canvas, .camera-wrap img {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.camera-overlay {
  position: absolute; inset: 0; display: flex;
  flex-direction: column; align-items: center; justify-content: center;
  background: rgba(0,0,0,.6); backdrop-filter: blur(2px); gap: 12px;
}
.camera-overlay.hidden { display: none; }

.shot-counter {
  position: absolute; top: 12px; right: 12px;
  background: rgba(0,0,0,.7); border: 1px solid var(--glass-border);
  border-radius: 20px; padding: 4px 12px; font-size: 13px; font-weight: 600;
}
.countdown-ring {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  font-size: 72px; font-weight: 700;
  color: var(--primary); text-shadow: 0 0 40px rgba(14,165,233,.8);
  animation: popIn .3s ease;
}
@keyframes popIn { from{transform:translate(-50%,-50%) scale(.6)} to{transform:translate(-50%,-50%) scale(1)} }

/* ── Shot Grid ────────────────────────────────────────────────────────────── */
.shot-grid { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.shot-thumb {
  width: 72px; height: 72px; border-radius: var(--radius-sm);
  object-fit: cover; border: 2px solid var(--glass-border);
  transition: var(--transition);
}
.shot-thumb.captured { border-color: var(--primary); box-shadow: 0 0 12px rgba(14,165,233,.4); }
.shot-slot {
  width: 72px; height: 72px; border-radius: var(--radius-sm);
  border: 2px dashed var(--glass-border); display: flex;
  align-items: center; justify-content: center;
  color: var(--text-dim); font-size: 22px;
}

/* ── Result Card ──────────────────────────────────────────────────────────── */
.result-card { padding: 24px; border-radius: var(--radius);
  border: 1px solid var(--glass-border); background: var(--glass);
  transition: var(--transition); }
.result-card.identified { border-color: var(--success); background: rgba(34,197,94,.08); }
.result-card.unknown    { border-color: var(--warning); background: rgba(245,158,11,.08); }
.result-card.no_face    { border-color: var(--text-dim); }
.result-status {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: 20px; font-size: 13px; font-weight: 600;
  margin-bottom: 16px;
}
.result-status.identified { background: rgba(34,197,94,.15); color: var(--success); }
.result-status.unknown    { background: rgba(245,158,11,.15); color: var(--warning); }
.result-status.no_face    { background: rgba(100,116,139,.15); color: var(--text-muted); }

/* ── Confidence Bar ───────────────────────────────────────────────────────── */
.confidence-wrap { margin-top: 12px; }
.confidence-label { display: flex; justify-content: space-between;
  font-size: 12px; color: var(--text-muted); margin-bottom: 6px; }
.confidence-bar { height: 8px; background: var(--surface2); border-radius: 4px; overflow: hidden; }
.confidence-fill {
  height: 100%; border-radius: 4px;
  background: linear-gradient(90deg, var(--primary), var(--cyan));
  transition: width .6s cubic-bezier(.4,0,.2,1);
  box-shadow: 0 0 8px rgba(14,165,233,.4);
}

/* ── Table ────────────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; border-radius: var(--radius);
  border: 1px solid var(--glass-border); }
table { width: 100%; border-collapse: collapse; }
thead { background: var(--surface2); }
th { padding: 12px 16px; text-align: left; font-size: 12px; font-weight: 600;
  color: var(--text-muted); text-transform: uppercase; letter-spacing: .5px; }
td { padding: 14px 16px; font-size: 14px;
  border-top: 1px solid var(--glass-border); }
tr:hover td { background: rgba(255,255,255,.02); }

/* ── Toast ────────────────────────────────────────────────────────────────── */
#toast-container { position: fixed; bottom: 24px; right: 24px; z-index: 9999;
  display: flex; flex-direction: column; gap: 8px; }
.toast {
  min-width: 280px; padding: 14px 18px; border-radius: var(--radius-sm);
  border: 1px solid var(--glass-border); backdrop-filter: blur(20px);
  font-size: 14px; font-weight: 500; display: flex; align-items: center; gap: 10px;
  animation: slideUp .3s ease; box-shadow: var(--shadow);
}
@keyframes slideUp { from{transform:translateY(20px);opacity:0} to{transform:none;opacity:1} }
.toast.success { background: rgba(34,197,94,.15); border-color: rgba(34,197,94,.3); color: var(--success); }
.toast.error   { background: rgba(239,68,68,.15);  border-color: rgba(239,68,68,.3);  color: var(--danger); }
.toast.info    { background: rgba(14,165,233,.15); border-color: rgba(14,165,233,.3); color: var(--primary); }

/* ── Upload Drop Zone ─────────────────────────────────────────────────────── */
.dropzone {
  border: 2px dashed var(--glass-border); border-radius: var(--radius);
  padding: 40px 24px; text-align: center; cursor: pointer;
  transition: var(--transition); color: var(--text-muted);
}
.dropzone:hover, .dropzone.drag-over {
  border-color: var(--primary); background: rgba(14,165,233,.05);
  color: var(--primary);
}
.dropzone .drop-icon { font-size: 40px; margin-bottom: 12px; display: block; }

/* ── Loader ───────────────────────────────────────────────────────────────── */
.spinner {
  width: 20px; height: 20px; border: 2px solid rgba(255,255,255,.2);
  border-top-color: var(--primary); border-radius: 50%;
  animation: spin .6s linear infinite; display: inline-block;
}
@keyframes spin { to{transform: rotate(360deg)} }

/* ── Scrollbar ────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--surface2); border-radius: 3px; }

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { width: 60px; padding: 16px 8px; }
  .sidebar-logo .logo-text, .sidebar-logo .logo-sub,
  .nav-item span, .nav-section { display: none; }
  .nav-item { justify-content: center; padding: 12px; }
  .main { margin-left: 60px; padding: 20px; }
}