/* ───────────────────────────────────────────────────────────────── *
 * FaceTag – Custom CSS Design System                                 *
 * ───────────────────────────────────────────────────────────────── */

:root {
  --brand: #6366f1;
  --brand-glow: rgba(99, 102, 241, 0.35);
  --brand-dark: #4338ca;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-hover: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.08);
  --sidebar-w: 240px;
  --topbar-h: 64px;
  --radius: 14px;
  --shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'Inter', sans-serif; background: #030712; color: #f1f5f9; }

/* ── Scrollbar ────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #374151; border-radius: 4px; }

/* ── Sidebar ──────────────────────────────────────────────────── */
.sidebar {
  position: fixed; left: 0; top: 0; bottom: 0;
  width: var(--sidebar-w);
  background: rgba(10, 12, 20, 0.95);
  backdrop-filter: blur(20px);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  z-index: 100;
  transition: transform 0.3s ease;
}
.sidebar-logo {
  display: flex; align-items: center; gap: 12px;
  padding: 24px 20px;
  border-bottom: 1px solid var(--border);
}
.logo-icon { width: 36px; height: 36px; flex-shrink: 0; }
.logo-text { display: block; font-size: 18px; font-weight: 800; color: #f1f5f9; }
.logo-sub  { display: block; font-size: 10px; font-weight: 500; color: #6b7280; letter-spacing: 0.06em; text-transform: uppercase; }

.sidebar-nav { flex: 1; padding: 16px 12px; display: flex; flex-direction: column; gap: 4px; }
.nav-link {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  color: #9ca3af;
  text-decoration: none;
  font-size: 14px; font-weight: 500;
  transition: all 0.2s;
  cursor: pointer;
}
.nav-link svg { width: 18px; height: 18px; flex-shrink: 0; }
.nav-link:hover { background: var(--surface-hover); color: #f1f5f9; }
.nav-link.active {
  background: linear-gradient(135deg, rgba(99,102,241,0.25), rgba(99,102,241,0.1));
  color: #a5b4fc;
  border: 1px solid rgba(99,102,241,0.3);
  box-shadow: 0 0 12px var(--brand-glow);
}
.sidebar-footer { padding: 16px 20px; border-top: 1px solid var(--border); }
.mode-badge {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px; color: #6b7280;
}
.mode-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 6px #10b981;
  animation: pulse 2s infinite;
}

/* ── Main wrapper ─────────────────────────────────────────────── */
.main-wrapper {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex; flex-direction: column;
}

/* ── Topbar ───────────────────────────────────────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 50;
  height: var(--topbar-h);
  background: rgba(3, 7, 18, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 16px;
  padding: 0 28px;
}
.topbar-title { font-size: 18px; font-weight: 700; flex: 1; }
.sidebar-toggle-btn {
  display: none; background: none; border: none; cursor: pointer;
  color: #9ca3af; padding: 6px;
}
.sidebar-toggle-btn svg { width: 22px; height: 22px; }
.topbar-actions { display: flex; align-items: center; gap: 12px; }
.global-search-wrap {
  display: flex; align-items: center; gap: 8px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: 7px 14px;
}
.global-search-wrap svg { width: 16px; height: 16px; color: #6b7280; }
.global-search-wrap input {
  background: none; border: none; outline: none;
  color: #f1f5f9; font-size: 14px; width: 200px;
}

/* ── Page content ─────────────────────────────────────────────── */
.page-content {
  flex: 1;
  padding: 32px 28px;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
}

/* ── Cards ────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  backdrop-filter: blur(8px);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.card:hover { border-color: rgba(99,102,241,0.3); box-shadow: 0 0 0 1px rgba(99,102,241,0.1); }

/* ── Stat cards ───────────────────────────────────────────────── */
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}
.stat-card::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--brand-glow), transparent 60%);
  opacity: 0; transition: opacity 0.3s;
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.stat-card:hover::before { opacity: 1; }
.stat-num { font-size: 36px; font-weight: 800; color: #f1f5f9; }
.stat-label { font-size: 13px; color: #9ca3af; margin-top: 4px; }
.stat-icon {
  position: absolute; right: 16px; top: 50%;
  transform: translateY(-50%);
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(99,102,241,0.15);
  color: var(--brand);
}
.stat-icon svg { width: 24px; height: 24px; }

/* ── Buttons ──────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px; border-radius: 10px;
  font-size: 14px; font-weight: 600;
  border: none; cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  color: white;
  box-shadow: 0 4px 14px rgba(99,102,241,0.4);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(99,102,241,0.5); }
.btn-primary:active { transform: translateY(0); }
.btn-ghost {
  background: var(--surface);
  border: 1px solid var(--border);
  color: #d1d5db;
}
.btn-ghost:hover { background: var(--surface-hover); border-color: rgba(99,102,241,0.4); color: #f1f5f9; }
.btn-danger {
  background: rgba(239,68,68,0.15);
  border: 1px solid rgba(239,68,68,0.3);
  color: #f87171;
}
.btn-danger:hover { background: rgba(239,68,68,0.25); }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn svg { width: 16px; height: 16px; }

/* ── Form elements ────────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-label { font-size: 13px; font-weight: 600; color: #d1d5db; }
.form-input {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  color: #f1f5f9;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-input:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-glow);
}
.form-input::placeholder { color: #6b7280; }
select.form-input option { background: #1f2937; }

/* ── Badges ───────────────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px; border-radius: 20px;
  font-size: 11px; font-weight: 600; letter-spacing: 0.02em;
}
.badge-green  { background: rgba(16,185,129,0.15); color: #34d399; border: 1px solid rgba(16,185,129,0.3); }
.badge-yellow { background: rgba(245,158,11,0.15); color: #fbbf24; border: 1px solid rgba(245,158,11,0.3); }
.badge-red    { background: rgba(239,68,68,0.15);  color: #f87171; border: 1px solid rgba(239,68,68,0.3); }
.badge-blue   { background: rgba(59,130,246,0.15); color: #60a5fa; border: 1px solid rgba(59,130,246,0.3); }
.badge-gray   { background: rgba(107,114,128,0.2); color: #9ca3af; border: 1px solid rgba(107,114,128,0.3); }

/* ── Confidence badge colors ──────────────────────────────────── */
.conf-high   { background: rgba(16,185,129,0.2);  color: #34d399; }
.conf-mid    { background: rgba(245,158,11,0.2);  color: #fbbf24; }
.conf-low    { background: rgba(239,68,68,0.2);   color: #f87171; }
.conf-unknown{ background: rgba(107,114,128,0.25);color: #9ca3af; }

/* ── Upload zone ──────────────────────────────────────────────── */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 48px 32px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s;
  background: var(--surface);
}
.upload-zone:hover, .upload-zone.dragging {
  border-color: var(--brand);
  background: rgba(99,102,241,0.05);
  box-shadow: 0 0 0 4px var(--brand-glow);
}

/* ── Employee card ────────────────────────────────────────────── */
.employee-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}
.employee-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4);
  border-color: rgba(99,102,241,0.4);
}
.employee-avatar {
  width: 100%; aspect-ratio: 1;
  object-fit: cover;
  background: linear-gradient(135deg, #1e1b4b, #312e81);
}
.employee-avatar-placeholder {
  width: 100%; aspect-ratio: 1;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #1e1b4b, #312e81);
  font-size: 48px; font-weight: 800; color: #a5b4fc;
}
.employee-info { padding: 16px; }
.employee-name  { font-size: 15px; font-weight: 700; color: #f1f5f9; }
.employee-role  { font-size: 12px; color: #9ca3af; margin-top: 2px; }
.employee-dept  { margin-top: 10px; }

/* ── Photo gallery ────────────────────────────────────────────── */
.photo-item {
  position: relative; cursor: pointer; border-radius: 12px; overflow: hidden;
  background: #111827;
  break-inside: avoid; margin-bottom: 16px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.photo-item:hover { transform: scale(1.02); box-shadow: 0 8px 32px rgba(0,0,0,0.5); }
.photo-item img { width: 100%; display: block; }
.photo-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 60%);
  opacity: 0; transition: opacity 0.3s;
  display: flex; align-items: flex-end; padding: 12px;
}
.photo-item:hover .photo-overlay { opacity: 1; }
.photo-face-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.face-tag-chip {
  background: rgba(0,0,0,0.75); backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 20px; padding: 4px 10px;
  font-size: 11px; font-weight: 600; color: white;
}
.face-tag-chip.unknown { color: #fbbf24; }

/* ── Progress bar ─────────────────────────────────────────────── */
.progress-bar-wrap {
  background: rgba(255,255,255,0.08); border-radius: 99px; height: 6px; overflow: hidden;
}
.progress-bar-fill {
  height: 100%; border-radius: 99px;
  background: linear-gradient(90deg, #6366f1, #818cf8);
  transition: width 0.5s ease;
}

/* ── Activity feed ────────────────────────────────────────────── */
.activity-item {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.activity-item:last-child { border-bottom: none; }
.activity-icon {
  width: 32px; height: 32px; flex-shrink: 0;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px;
}
.activity-icon.reg  { background: rgba(99,102,241,0.2); }
.activity-icon.tag  { background: rgba(16,185,129,0.2); }
.activity-text { font-size: 13px; color: #d1d5db; line-height: 1.5; }
.activity-time { font-size: 11px; color: #6b7280; margin-top: 2px; }

/* ── Modal ────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(0,0,0,0.7); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.modal-overlay.hidden { display: none; }
.modal-container {
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: 20px;
  max-width: 820px; width: 100%;
  max-height: 90vh; overflow-y: auto;
  position: relative;
  box-shadow: 0 24px 80px rgba(0,0,0,0.6);
  animation: slideUp 0.3s cubic-bezier(0.16,1,0.3,1);
}
.modal-close {
  position: absolute; top: 16px; right: 16px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; color: #9ca3af;
  width: 32px; height: 32px; cursor: pointer;
  font-size: 14px;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}
.modal-close:hover { background: var(--surface-hover); color: #f1f5f9; }

/* ── Toast ────────────────────────────────────────────────────── */
.toast-container {
  position: fixed; bottom: 24px; right: 24px;
  z-index: 999; display: flex; flex-direction: column; gap: 10px;
}
.toast {
  min-width: 260px; max-width: 360px;
  background: #111827; border: 1px solid var(--border);
  border-radius: 12px; padding: 12px 16px;
  display: flex; gap: 10px; align-items: flex-start;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  animation: slideUp 0.3s ease;
}
.toast-icon { font-size: 16px; }
.toast-msg  { font-size: 13px; font-weight: 500; color: #f1f5f9; }

/* ── Face overlay canvas (gallery) ───────────────────────────── */
.photo-canvas-wrap { position: relative; }
.face-overlay-canvas { position: absolute; inset: 0; pointer-events: none; }

/* ── Webcam preview ───────────────────────────────────────────── */
.webcam-wrap {
  position: relative; border-radius: 12px; overflow: hidden;
  background: #0a0a14; border: 1px solid var(--border);
}
.webcam-wrap video, .webcam-wrap canvas {
  width: 100%; display: block;
}
.webcam-status {
  position: absolute; top: 12px; right: 12px;
  background: rgba(0,0,0,0.7); border-radius: 20px;
  padding: 4px 12px; font-size: 12px; font-weight: 600;
  display: flex; align-items: center; gap: 6px;
}
.webcam-status.detected  { border: 1px solid #10b981; color: #34d399; }
.webcam-status.detecting { border: 1px solid #f59e0b; color: #fbbf24; }

/* ── Section headings ─────────────────────────────────────────── */
.section-title {
  font-size: 22px; font-weight: 800; color: #f1f5f9;
  display: flex; align-items: center; gap: 10px;
}
.section-subtitle { font-size: 14px; color: #6b7280; margin-top: 4px; }

/* ── Masonry grid ─────────────────────────────────────────────── */
.masonry { columns: 3; column-gap: 16px; }
@media (max-width: 1024px) { .masonry { columns: 2; } }
@media (max-width: 640px)  { .masonry { columns: 1; } }

/* ── Check success ────────────────────────────────────────────── */
.success-checkmark {
  width: 48px; height: 48px; border-radius: 50%;
  background: rgba(16,185,129,0.15); border: 2px solid #10b981;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  animation: fadeIn 0.4s ease;
}

/* ── Skeleton loader ──────────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, #111827 25%, #1f2937 50%, #111827 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 8px;
}
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ── Animations ───────────────────────────────────────────────── */
@keyframes fadeIn  { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pulse   { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

/* ── Responsive sidebar ───────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.sidebar-open { transform: translateX(0); }
  .main-wrapper { margin-left: 0; }
  .sidebar-toggle-btn { display: flex; }
  .page-content { padding: 20px 16px; }
}

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

/* ── Empty state ──────────────────────────────────────────────── */
.empty-state {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; padding: 60px 20px; text-align: center; gap: 12px;
}
.empty-state-icon { font-size: 52px; opacity: 0.3; }
.empty-state-title { font-size: 17px; font-weight: 700; color: #d1d5db; }
.empty-state-desc  { font-size: 13px; color: #6b7280; max-width: 320px; }

/* ── Spinner ──────────────────────────────────────────────────── */
.spinner {
  width: 24px; height: 24px; border: 3px solid rgba(99,102,241,0.2);
  border-top-color: var(--brand); border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }