/* Global Design System for MailPhix - Dark Theme */
:root {
  --primary: #6366f1;
  --primary-600: #4f46e5;
  --accent: #8b5cf6;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --info: #3b82f6;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 10px;
  --radius-2xl: 12px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
  --shadow-md: 0 2px 4px 0 rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 4px 8px 0 rgba(0, 0, 0, 0.06);
  --shadow-xl: 0 8px 16px 0 rgba(0, 0, 0, 0.07);
  --shadow-2xl: 0 16px 32px 0 rgba(0, 0, 0, 0.08);
}

/* Typography */
body { font-family: Inter, system-ui, -apple-system, Segoe UI, Arial, sans-serif; color: #f8fafc; background: #0b1120; }
h1,h2,h3 { color: #f8fafc; letter-spacing: -0.01em; }
small, .text-muted { color: #94a3b8; }

/* Cards */
.card, .content-card, .profile-card { background: rgba(255, 255, 255, 0.05); border: 1px solid rgba(255, 255, 255, 0.08); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.card:hover { box-shadow: var(--shadow-md); }

/* Buttons */
.btn { border-radius: var(--radius-sm); font-weight: 600; transition: all .2s ease; }
.btn-primary { background: var(--primary); border: none; color: white; }
.btn-primary:hover { background: var(--primary-600); }
.btn-secondary { background: rgba(255, 255, 255, 0.05); color: #f8fafc; border: 1px solid rgba(255, 255, 255, 0.08); }
.btn-secondary:hover { background: rgba(255, 255, 255, 0.08); }
.btn-success { background: var(--success); border: none; color: white; }
.btn-danger { background: var(--danger); border: none; color: white; }

/* Inputs */
.form-control { border-radius: var(--radius-sm); border: 1px solid rgba(255, 255, 255, 0.08); padding: .625rem .75rem; background: rgba(255, 255, 255, 0.05); color: #f8fafc; }
.form-control:hover { border-color: rgba(255, 255, 255, 0.12); }
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(99,102,241,.2); }

/* Compact density utilities */
.compact-input { padding: .5rem .625rem !important; }
.compact-gap-2 { gap: .5rem !important; }
.compact-gap-1 { gap: .375rem !important; }
.compact-table th { padding: .5rem .75rem !important; }
.compact-table td { padding: .625rem .75rem !important; }
.compact-btn { padding: .5rem 1rem !important; border-radius: var(--radius-sm) !important; }

/* Badges */
.badge { border-radius: 999px; padding: .25rem .6rem; font-weight: 600; }
.badge-primary { background: rgba(99,102,241,0.2); color: #c7d2fe; }
.badge-success { background: rgba(16,185,129,0.2); color: #86efac; }
.badge-danger { background: rgba(239,68,68,0.2); color: #fca5a5; }

/* Navbar */
.navbar { background: #0f172a; border-bottom: 1px solid rgba(255, 255, 255, 0.08); box-shadow: 0 4px 20px rgba(0,0,0,.2); }
.nav-link { color: #94a3b8; border-radius: var(--radius-sm); padding: .5rem .75rem; }
.nav-link:hover { color: #f8fafc; background: rgba(255, 255, 255, 0.05); }
.nav-link.active { color: var(--primary); background: rgba(99,102,241,0.1); }

/* Upload Zone */
.upload-zone { border: 2px dashed rgba(255, 255, 255, 0.08); border-radius: var(--radius-md); background: rgba(255, 255, 255, 0.02); }
.upload-zone.drag-over { border-color: var(--primary); background: rgba(99,102,241,0.1); }

/* Toast */
.toast { border-radius: var(--radius-md); box-shadow: var(--shadow-md); }

/* Carousel Fixes */
.carousel-container { margin-bottom: 2rem; }
.carousel-track { min-height: 520px; }
.email-preview-card { border-radius: var(--radius-lg); }

/* Utilities */
.flex { display:flex; }
.items-center { align-items:center; }
.justify-between { justify-content:space-between; }
.gap-2 { gap:.5rem; }
.gap-3 { gap:.75rem; }
.gap-4 { gap:1rem; }
.mt-2 { margin-top:.5rem; }
.mt-3 { margin-top:.75rem; }
.mt-4 { margin-top:1rem; }
.mb-2 { margin-bottom:.5rem; }
.mb-3 { margin-bottom:.75rem; }
.mb-4 { margin-bottom:1rem; }
.p-2 { padding:.5rem; }
.p-3 { padding:.75rem; }
.p-4 { padding:1rem; }
.rounded-md { border-radius: var(--radius-md); }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }

/* Outline variants */
.btn-outline-primary { border: 1px solid var(--primary); color: var(--primary); background: transparent; }
.btn-outline-primary:hover { background: var(--primary); color: #fff; }

/* Badge variants */
.badge.bg-primary { background: var(--primary) !important; color: white; }
.badge.bg-success { background: var(--success) !important; color: white; }
.badge.bg-info { background: var(--accent) !important; color: white; }