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

:root {
  --bg: #0f172a;
  --bg-card: #1e293b;
  --bg-input: #0f172a;
  --border: #334155;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --accent: #f97316;
  --accent-hover: #fb923c;
  --success: #22c55e;
  --danger: #ef4444;
  --info: #38bdf8;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* Login Screen */
.login-screen {
  display: none;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: var(--bg);
}

.login-box {
  text-align: center;
  padding: 3rem;
  background: var(--bg-card);
  border-radius: 16px;
  border: 1px solid var(--border);
  max-width: 400px;
}

.login-box h1 {
  font-size: 2rem;
  margin-bottom: 0.25rem;
}

.login-box .subtitle {
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.login-box .logo-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
}

.login-box .powered-by {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-bottom: 1.5rem;
}

.login-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 12px 40px;
  font-size: 1.1rem;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.2s;
}

.login-btn:hover { background: var(--accent-hover); }

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-left .logo-icon { font-size: 1.5rem; }

.header h1 {
  font-size: 1.3rem;
  font-weight: 700;
}

.header h1 span { color: var(--accent); }

.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

#user-email {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.btn-logout {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
}

.btn-logout:hover {
  border-color: var(--danger);
  color: var(--danger);
}

/* Main Content */
.main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

/* Stats Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
}

.stat-card .stat-label {
  color: var(--text-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.stat-card .stat-value {
  font-size: 2rem;
  font-weight: 700;
}

.stat-card .stat-value .top-slug {
  font-size: 1rem;
  color: var(--accent);
}

.stat-card .stat-value .top-count {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Create Form */
.create-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.create-section h2 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr auto;
  gap: 0.75rem;
  align-items: end;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.form-group input, .form-group select {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus, .form-group select:focus {
  border-color: var(--accent);
}

.form-group input::placeholder {
  color: #475569;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 10px 24px;
  font-size: 0.95rem;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  white-space: nowrap;
  transition: background 0.2s;
}

.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

/* Links Table */
.table-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.table-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.table-header h2 {
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.table-wrapper {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead th {
  text-align: left;
  padding: 0.75rem 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

tbody td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid #1e293b;
  font-size: 0.9rem;
  vertical-align: middle;
}

tbody tr:hover { background: rgba(248, 250, 252, 0.02); }
tbody tr.row-expired { opacity: 0.5; }

.slug-cell { display: flex; flex-direction: column; gap: 2px; }
.slug-label { font-weight: 600; color: var(--info); font-family: 'SF Mono', 'Fira Code', monospace; }
.link-title { font-size: 0.8rem; color: var(--text-muted); }

.dest-link {
  color: var(--text);
  text-decoration: none;
  word-break: break-all;
}
.dest-link:hover { color: var(--accent); }

.clicks-cell { display: flex; flex-direction: column; gap: 2px; }
.click-count { font-weight: 700; font-size: 1.1rem; }
.last-clicked { font-size: 0.75rem; color: var(--text-muted); }

.status-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.status-active { background: rgba(34, 197, 94, 0.15); color: var(--success); }
.status-expired { background: rgba(239, 68, 68, 0.15); color: var(--danger); }

.actions-cell {
  display: flex;
  gap: 4px;
  white-space: nowrap;
}

.btn-icon {
  background: none;
  border: 1px solid transparent;
  padding: 6px 8px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.2s;
}

.btn-icon:hover {
  background: rgba(248, 250, 252, 0.05);
  border-color: var(--border);
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.1);
  border-color: var(--danger);
}

.empty-state {
  text-align: center;
  padding: 3rem !important;
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* Modals */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  max-width: 500px;
  width: 90%;
}

.modal h3 {
  font-size: 1.2rem;
  margin-bottom: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover { color: var(--text); }

.modal .form-group { margin-bottom: 1rem; }

.modal-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  margin-top: 1.5rem;
}

.btn-secondary {
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 20px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.95rem;
  transition: all 0.2s;
}

.btn-secondary:hover { border-color: var(--text-muted); }

/* QR Modal */
#qr-container {
  display: flex;
  justify-content: center;
  margin: 1.5rem 0;
  background: #fff;
  border-radius: 12px;
  padding: 1.5rem;
}

#qr-url {
  text-align: center;
  color: var(--text-muted);
  font-family: monospace;
  font-size: 0.9rem;
  margin-bottom: 1rem;
  word-break: break-all;
}

/* Toast */
#toast-container {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  transform: translateX(120%);
  transition: transform 0.3s ease;
  max-width: 400px;
}

.toast-show { transform: translateX(0); }
.toast-success { background: #166534; color: #bbf7d0; }
.toast-error { background: #991b1b; color: #fecaca; }
.toast-info { background: #1e3a5f; color: #bae6fd; }

/* Loading */
.loading-overlay {
  display: none;
  justify-content: center;
  padding: 3rem;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Responsive */
@media (max-width: 768px) {
  .form-row {
    grid-template-columns: 1fr;
  }
  .header {
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
  }
  .main { padding: 1rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}