/* ══════════════════════════════════════════════════════════════════════════════
   VerifAI — Design System v1.0.0
   Premium dark theme with glassmorphism
   ══════════════════════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ── Tokens ──────────────────────────────────────────────────────────────────── */
:root {
  /* Backgrounds */
  --bg-base:     #06060f;
  --bg-surface:  #0d0d1a;
  --bg-card:     #13132a;
  --bg-elevated: #1a1a3e;
  --bg-input:    #0f0f20;

  /* Primary */
  --primary:       #6366f1;
  --primary-light: #818cf8;
  --primary-dark:  #4f46e5;
  --primary-glow:  rgba(99, 102, 241, 0.25);
  --primary-bg:    rgba(99, 102, 241, 0.08);

  /* Accent */
  --accent:      #a78bfa;
  --accent-glow: rgba(167, 139, 250, 0.2);

  /* Semantic */
  --success:     #22c55e;
  --success-bg:  rgba(34, 197, 94, 0.1);
  --warning:     #f59e0b;
  --warning-bg:  rgba(245, 158, 11, 0.1);
  --error:       #ef4444;
  --error-bg:    rgba(239, 68, 68, 0.1);

  /* Text */
  --text:        #e2e8f0;
  --text-muted:  #94a3b8;
  --text-dim:    #64748b;
  --text-heading:#f8fafc;

  /* Border */
  --border:      rgba(99, 102, 241, 0.12);
  --border-hover:rgba(99, 102, 241, 0.3);

  /* Misc */
  --radius:      12px;
  --radius-sm:   8px;
  --radius-lg:   20px;
  --radius-xl:   28px;
  --shadow:      0 4px 24px rgba(0,0,0,0.3);
  --shadow-glow: 0 0 40px var(--primary-glow);
  --transition:  all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  background: var(--bg-base);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }

img { max-width: 100%; display: block; }

/* ── Utilities ───────────────────────────────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-sm { max-width: 540px; margin: 0 auto; padding: 0 24px; }
.text-center { text-align: center; }
.text-gradient {
  background: linear-gradient(135deg, var(--primary-light), var(--accent), #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-muted { color: var(--text-muted); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

/* ── Glassmorphism Card ──────────────────────────────────────────────────────── */
.glass {
  background: rgba(19, 19, 42, 0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}
.glass:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}

/* ── Buttons ─────────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  line-height: 1.4;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 16px var(--primary-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--primary-glow);
  color: #fff;
}

.btn-secondary {
  background: var(--primary-bg);
  color: var(--primary-light);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: rgba(99, 102, 241, 0.15);
  border-color: var(--border-hover);
  color: var(--primary-light);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary-light);
}

.btn-danger {
  background: var(--error-bg);
  color: var(--error);
  border: 1px solid rgba(239,68,68,0.2);
}
.btn-danger:hover {
  background: rgba(239,68,68,0.2);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
  border-radius: 6px;
}

.btn-lg {
  padding: 16px 40px;
  font-size: 16px;
  border-radius: var(--radius);
}

.btn-block { width: 100%; }

/* ── Form Inputs ─────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 20px; }
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.form-input,
.form-select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  transition: var(--transition);
  outline: none;
}
.form-input:focus,
.form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}
.form-input::placeholder { color: var(--text-dim); }

/* ── Badges ──────────────────────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.badge-primary { background: var(--primary-bg); color: var(--primary-light); }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-error   { background: var(--error-bg);   color: var(--error); }

/* ── Tables ──────────────────────────────────────────────────────────────────── */
.table-wrapper { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; }
thead { background: var(--bg-elevated); }
th {
  padding: 14px 16px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}
td {
  padding: 14px 16px;
  font-size: 14px;
  border-top: 1px solid var(--border);
  color: var(--text);
}
tbody tr { transition: var(--transition); }
tbody tr:hover { background: var(--primary-bg); }

/* ── Modal ───────────────────────────────────────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}
.modal-overlay.active { display: flex; }
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
  animation: modalIn 0.3s ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to   { opacity: 1; transform: scale(1)    translateY(0); }
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}
.modal-title { font-size: 18px; font-weight: 700; color: var(--text-heading); }
.modal-close {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 20px;
  cursor: pointer;
  padding: 4px;
  transition: var(--transition);
}
.modal-close:hover { color: var(--text); }

/* ── Notifications ───────────────────────────────────────────────────────────── */
.toast-container {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  animation: toastIn 0.3s ease, toastOut 0.3s ease 3.7s forwards;
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 280px;
  box-shadow: var(--shadow);
}
.toast-success { background: #065f46; color: #a7f3d0; border: 1px solid rgba(34,197,94,0.3); }
.toast-error   { background: #7f1d1d; color: #fca5a5; border: 1px solid rgba(239,68,68,0.3); }
.toast-info    { background: #1e1b4b; color: #c7d2fe; border: 1px solid rgba(99,102,241,0.3); }

@keyframes toastIn  { from { opacity:0; transform:translateX(100px); } to { opacity:1; transform:translateX(0); } }
@keyframes toastOut { from { opacity:1; } to { opacity:0; transform:translateX(100px); } }

/* ── Skeleton Loading ────────────────────────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-elevated) 50%, var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer { 0%{background-position:200%} 100%{background-position:-200%} }

/* ── Responsive ──────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .btn-lg { padding: 14px 28px; font-size: 15px; }
  .modal { padding: 24px; margin: 16px; }
}