/* ═══════════════════════════════════════════════════════════
   Domain Mail — Design System (common.css)
   Premium dark theme with glassmorphism
   ═══════════════════════════════════════════════════════════ */

/* ── CSS Variables ──────────────────────────────────────── */
:root {
  /* Backgrounds */
  --bg-deep:       #06080f;
  --bg-primary:    #0b0f1a;
  --bg-surface:    #111827;
  --bg-elevated:   #1a2035;
  --bg-hover:      #1f2847;
  --bg-active:     #253052;

  /* Glass */
  --glass-bg:      rgba(17, 24, 39, 0.72);
  --glass-border:  rgba(255, 255, 255, 0.06);
  --glass-blur:    16px;

  /* Text */
  --text-primary:   #e8ecf4;
  --text-secondary: #8b95a9;
  --text-tertiary:  #5a6478;
  --text-inverse:   #0b0f1a;

  /* Accent */
  --accent:         #4f8ff7;
  --accent-hover:   #6ba3ff;
  --accent-subtle:  rgba(79, 143, 247, 0.12);
  --accent-glow:    rgba(79, 143, 247, 0.25);

  /* Status */
  --success:  #34d399;
  --warning:  #fbbf24;
  --error:    #f87171;
  --info:     #60a5fa;

  /* Borders & Shadows */
  --border:        rgba(255, 255, 255, 0.06);
  --border-strong: rgba(255, 255, 255, 0.12);
  --shadow-sm:     0 1px 2px rgba(0,0,0,0.3);
  --shadow-md:     0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg:     0 8px 32px rgba(0,0,0,0.5);
  --shadow-glow:   0 0 20px rgba(79, 143, 247, 0.15);

  /* Radius */
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --radius-xl:  24px;

  /* Transitions */
  --transition-fast:   150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow:   400ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

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

/* ── Scrollbar ──────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.1);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.18); }

/* ── Glass Panel ────────────────────────────────────────── */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
}

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  outline: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #6c63ff);
  color: #fff;
  box-shadow: var(--shadow-sm), 0 0 16px rgba(79,143,247,0.2);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md), 0 0 24px rgba(79,143,247,0.3);
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
}
.btn-secondary:hover { background: var(--bg-hover); }

.btn-danger {
  background: rgba(248, 113, 113, 0.12);
  color: var(--error);
  border: 1px solid rgba(248,113,113,0.2);
}
.btn-danger:hover { background: rgba(248, 113, 113, 0.22); }

.btn-sm { padding: 6px 14px; font-size: 0.82rem; }
.btn-icon {
  width: 36px; height: 36px; padding: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-icon:hover { background: var(--bg-hover); color: var(--text-primary); }

/* ── Inputs ─────────────────────────────────────────────── */
.input-group { margin-bottom: 18px; }
.input-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.input {
  width: 100%;
  padding: 11px 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.93rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}
.input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-subtle);
}
.input::placeholder { color: var(--text-tertiary); }

select.input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238b95a9' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

/* ── Badge ──────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-active { background: rgba(52,211,153,0.12); color: var(--success); }
.badge-inactive { background: rgba(248,113,113,0.12); color: var(--error); }
.badge-accent { background: var(--accent-subtle); color: var(--accent); }
.badge-unread {
  width: 8px; height: 8px; padding: 0;
  background: var(--accent);
  border-radius: 50%;
}

/* ── Toast / Notification ───────────────────────────────── */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 500;
  animation: slideInRight 0.3s ease, fadeOut 0.3s ease 2.7s forwards;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-lg);
  max-width: 360px;
}
.toast-success { background: rgba(52,211,153,0.15); color: var(--success); border: 1px solid rgba(52,211,153,0.25); }
.toast-error   { background: rgba(248,113,113,0.15); color: var(--error); border: 1px solid rgba(248,113,113,0.25); }
.toast-info    { background: rgba(96,165,250,0.15); color: var(--info); border: 1px solid rgba(96,165,250,0.25); }

/* ── Spinner ────────────────────────────────────────────── */
.spinner {
  width: 28px; height: 28px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.loading-overlay {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 60px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ── Empty State ────────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  color: var(--text-tertiary);
  text-align: center;
}
.empty-state svg { width: 64px; height: 64px; margin-bottom: 16px; opacity: 0.3; }
.empty-state h3 { font-size: 1.1rem; color: var(--text-secondary); margin-bottom: 6px; }
.empty-state p { font-size: 0.88rem; }

/* ── Table ──────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
}
th, td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.88rem;
}
th {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--bg-primary);
  position: sticky;
  top: 0;
}
tr:hover td { background: var(--bg-hover); }

/* ── Modal ──────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease;
}

.modal {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 28px;
  width: 90%;
  max-width: 480px;
  box-shadow: var(--shadow-lg);
  animation: scaleIn 0.25s ease;
}

.modal h3 {
  font-size: 1.1rem;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
}

/* ── Animations ─────────────────────────────────────────── */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeOut { from { opacity: 1; } to { opacity: 0; } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.95); } to { opacity: 1; transform: scale(1); } }
@keyframes slideInRight { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: translateX(0); } }
@keyframes slideInUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

/* ── Utility ────────────────────────────────────────────── */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: 8px; }
.gap-md { gap: 16px; }
.mt-auto { margin-top: auto; }
.text-sm { font-size: 0.82rem; }
.text-xs { font-size: 0.75rem; }
.text-secondary { color: var(--text-secondary); }
.text-right { text-align: right; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hidden { display: none !important; }