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

/* ===== Dark Theme (Default) ===== */
:root, [data-theme="dark"] {
  --bg: #09090b;
  --bg-subtle: #111113;
  --bg-card: rgba(24, 24, 27, 0.72);
  --bg-card-solid: #18181b;
  --bg-hover: rgba(255, 255, 255, 0.045);
  --bg-active: rgba(99, 102, 241, 0.10);
  --bg-input: rgba(9, 9, 11, 0.6);
  --border: rgba(255, 255, 255, 0.07);
  --border-light: rgba(255, 255, 255, 0.11);
  --border-focus: rgba(99, 102, 241, 0.5);
  --text: #e8ecf4;
  --text-secondary: #b0b8cc;
  --text-muted: #7a84a0;
  --text-dim: #4e5672;
  --primary: #6366f1;
  --primary-light: #818cf8;
  --primary-bg: rgba(99, 102, 241, 0.10);
  --primary-glow: rgba(99, 102, 241, 0.20);
  --accent: #a78bfa;
  --danger: #f43f5e;
  --danger-bg: rgba(244, 63, 94, 0.10);
  --danger-hover: #fb7185;
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.10);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.10);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow: 0 4px 24px rgba(0,0,0,0.35);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.5);
  --glass: blur(24px) saturate(1.4);
  --radius: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --sidebar-w: 240px;
  --topbar-h: 60px;
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  color-scheme: dark;
}

/* ===== Light Theme ===== */
[data-theme="light"] {
  --bg: #f4f6fb;
  --bg-subtle: #edf0f7;
  --bg-card: rgba(255, 255, 255, 0.82);
  --bg-card-solid: #ffffff;
  --bg-hover: rgba(0, 0, 0, 0.03);
  --bg-active: rgba(99, 102, 241, 0.06);
  --bg-input: rgba(255, 255, 255, 0.9);
  --border: rgba(0, 0, 0, 0.07);
  --border-light: rgba(0, 0, 0, 0.10);
  --border-focus: rgba(99, 102, 241, 0.45);
  --text: #1a1d2e;
  --text-secondary: #4a5068;
  --text-muted: #6b7394;
  --text-dim: #9ca3be;
  --primary: #6366f1;
  --primary-light: #4f46e5;
  --primary-bg: rgba(99, 102, 241, 0.07);
  --primary-glow: rgba(99, 102, 241, 0.12);
  --accent: #7c3aed;
  --danger: #e11d48;
  --danger-bg: rgba(225, 29, 72, 0.07);
  --danger-hover: #f43f5e;
  --success: #059669;
  --success-bg: rgba(5, 150, 105, 0.07);
  --warning: #d97706;
  --warning-bg: rgba(217, 119, 6, 0.07);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.12);
  --glass: blur(24px) saturate(1.2);
  color-scheme: light;
}

/* ===== Body ===== */
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  transition: background var(--transition-slow), color var(--transition-slow);
}
[data-theme="dark"] body {
  background-image:
    radial-gradient(ellipse at 0% 0%, rgba(99,102,241,0.10) 0%, transparent 45%),
    radial-gradient(ellipse at 90% 100%, rgba(167,139,250,0.035) 0%, transparent 55%);
  background-attachment: fixed;
}
[data-theme="light"] body {
  background-image:
    radial-gradient(ellipse at 15% 5%, rgba(99,102,241,0.04) 0%, transparent 55%),
    radial-gradient(ellipse at 85% 95%, rgba(167,139,250,0.03) 0%, transparent 50%);
  background-attachment: fixed;
}
a { color: var(--primary-light); text-decoration: none; }
button { cursor: pointer; font-family: inherit; }
::selection { background: rgba(99, 102, 241, 0.25); }

/* Scrollbar */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-dim); }

/* ===== Layout ===== */
.app { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-card);
  backdrop-filter: var(--glass);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: background var(--transition-slow), border-color var(--transition-slow);
}
.sidebar-header {
  padding: 24px 22px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}
.sidebar-toggle {
  background: none; border: none; color: var(--text-dim);
  width: 32px; height: 32px; border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; transition: all var(--transition);
  margin-left: auto; flex-shrink: 0;
}
.sidebar-toggle:hover { background: var(--bg-hover); color: var(--text); }

/* Collapsed sidebar */
.app.sidebar-collapsed .sidebar { width: 64px; }
.app.sidebar-collapsed .sidebar-title,
.app.sidebar-collapsed .nav-item span,
.app.sidebar-collapsed .sidebar-footer span { display: none; }
.app.sidebar-collapsed .sidebar-header { padding: 18px 12px; justify-content: center; gap: 0; }
.app.sidebar-collapsed .sidebar-logo { display: none; }
.app.sidebar-collapsed .sidebar-toggle { margin: 8px auto 0; }
.app.sidebar-collapsed .nav { padding: 12px 8px; }
.app.sidebar-collapsed .nav-item { justify-content: center; padding: 11px 0; }
.app.sidebar-collapsed .nav-item.active::before { display: none; }
.app.sidebar-collapsed .sidebar-footer { padding: 12px; text-align: center; }
.app.sidebar-collapsed .logout-btn { justify-content: center; }
.app.sidebar-collapsed .main { margin-left: 64px; }
.sidebar, .main { transition: all var(--transition-slow); }
.sidebar-logo {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 2px 12px var(--primary-glow);
}
.sidebar-logo svg { width: 18px; height: 18px; color: #fff; }
.sidebar-header h1 { font-size: 15px; font-weight: 600; letter-spacing: -0.3px; }
.nav { flex: 1; padding: 16px 12px; overflow-y: auto; display: flex; flex-direction: column; gap: 2px; }
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  color: var(--text-muted);
  font-size: 13.5px;
  font-weight: 460;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  border-radius: 9px;
  position: relative;
}
.nav-item:hover { background: var(--bg-hover); color: var(--text-secondary); }
.nav-item.active {
  color: var(--primary-light);
  background: var(--bg-active);
  font-weight: 520;
}
.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 3px; height: 18px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  border-radius: 0 4px 4px 0;
}
.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; opacity: 0.55; transition: opacity var(--transition); }
.nav-item:hover svg { opacity: 0.75; }
.nav-item.active svg { opacity: 1; color: var(--primary); }
.sidebar-footer { padding: 16px 22px; border-top: 1px solid var(--border); }
.logout-btn {
  display: flex; align-items: center; gap: 8px;
  color: var(--text-dim); background: none; border: none;
  font-size: 13px; padding: 8px 0; width: 100%;
  transition: color var(--transition);
}
.logout-btn:hover { color: var(--danger); }

/* Main */
.main { flex: 1; margin-left: var(--sidebar-w); }
.topbar {
  height: var(--topbar-h);
  background: var(--bg-card);
  backdrop-filter: var(--glass);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 28px;
  position: sticky; top: 0; z-index: 50;
  transition: background var(--transition-slow), border-color var(--transition-slow);
}
.topbar-title { font-size: 16px; font-weight: 600; letter-spacing: -0.2px; }
.topbar-actions { display: flex; gap: 8px; align-items: center; }
.content { padding: 28px; min-height: calc(100vh - var(--topbar-h)); }

/* Theme Toggle */
.theme-toggle {
  display: flex; align-items: center; gap: 2px;
  background: var(--bg-input); border: 1px solid var(--border-light);
  border-radius: 8px; padding: 3px; height: 34px;
}
.theme-btn {
  background: none; border: none; color: var(--text-dim);
  width: 28px; height: 28px; border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition); font-size: 14px;
}
.theme-btn:hover { color: var(--text-secondary); }
.theme-btn.active { background: var(--primary-bg); color: var(--primary); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: 8px;
  font-size: 13px; font-weight: 500;
  border: 1px solid var(--border-light);
  background: var(--bg-card-solid);
  color: var(--text);
  transition: all var(--transition);
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
}
.btn:hover { border-color: var(--border-focus); transform: translateY(-1px); box-shadow: var(--shadow); }
.btn:active { transform: translateY(0); }
.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #4f46e5 100%);
  border-color: transparent; color: #fff;
  box-shadow: 0 2px 16px var(--primary-glow);
}
.btn-primary:hover { box-shadow: 0 6px 28px var(--primary-glow); }
.btn-danger { background: var(--danger); border-color: transparent; color: #fff; box-shadow: 0 2px 12px rgba(244,63,94,0.15); }
.btn-danger:hover { background: var(--danger-hover); }
.btn-sm { padding: 5px 11px; font-size: 12px; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none !important; box-shadow: none !important; }

/* ===== Table ===== */
.table-wrap {
  overflow-x: auto; border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg-card); backdrop-filter: var(--glass);
  box-shadow: var(--shadow-sm);
}
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th {
  text-align: left; padding: 13px 16px;
  color: var(--text-dim); font-weight: 550;
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.6px;
  background: var(--bg-hover); border-bottom: 1px solid var(--border);
}
td { padding: 13px 16px; border-bottom: 1px solid var(--border); transition: background var(--transition); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg-hover); }

/* ===== Badges ===== */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px; border-radius: 20px;
  font-size: 11.5px; font-weight: 560; letter-spacing: 0.15px;
}
.badge-active { background: var(--success-bg); color: var(--success); }
.badge-disabled { background: var(--bg-hover); color: var(--text-muted); }
.badge-error { background: var(--danger-bg); color: var(--danger); }

/* ===== Cards ===== */
.card {
  background: var(--bg-card); backdrop-filter: var(--glass);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 22px; margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}
.card:hover { border-color: var(--border-light); box-shadow: var(--shadow); }

/* Stat card (dashboard) */
.stat-card {
  display: flex; align-items: center; gap: 16px; padding: 20px 22px;
}
.stat-icon {
  width: 46px; height: 46px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.stat-value { font-size: 28px; font-weight: 700; line-height: 1.1; }
.stat-label { font-size: 12.5px; color: var(--text-dim); margin-top: 2px; }

/* ===== Forms ===== */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 12.5px; font-weight: 520; color: var(--text-muted); margin-bottom: 6px; }
.form-input, .form-select, .form-textarea {
  width: 100%; padding: 8px 14px;
  background: var(--bg-input); border: 1px solid var(--border-light);
  border-radius: 8px; color: var(--text); font-size: 13.5px;
  outline: none; transition: all var(--transition);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-bg);
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-dim); }
.form-textarea { min-height: 80px; resize: vertical; font-family: 'Cascadia Code', 'Fira Code', monospace; font-size: 12.5px; }

/* ===== Modal ===== */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  z-index: 200; animation: fadeIn 0.18s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal {
  background: var(--bg-card-solid); border: 1px solid var(--border-light);
  border-radius: var(--radius-xl); padding: 28px;
  width: 520px; max-width: 92vw; max-height: 85vh; overflow-y: auto;
  box-shadow: var(--shadow-lg); animation: modalIn 0.25s ease;
}
@keyframes modalIn { from { opacity: 0; transform: translateY(12px) scale(0.97); } to { opacity: 1; transform: translateY(0) scale(1); } }
.modal-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 22px; padding-bottom: 16px; border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-size: 16px; font-weight: 600; }
.modal-close {
  background: none; border: none; color: var(--text-dim);
  font-size: 20px; width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 8px; transition: all var(--transition);
}
.modal-close:hover { background: var(--bg-hover); color: var(--text); }
.modal-footer { display: flex; justify-content: flex-end; gap: 8px; margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--border); }

/* ===== Toast ===== */
.toast-container { position: fixed; bottom: 20px; right: 20px; z-index: 999; display: flex; flex-direction: column-reverse; gap: 8px; }
.toast {
  padding: 12px 20px; border-radius: var(--radius);
  font-size: 13.5px; font-weight: 460; max-width: 380px;
  backdrop-filter: blur(16px); box-shadow: var(--shadow);
  animation: toastIn 0.3s ease;
}
.toast-success { background: var(--success-bg); color: var(--success); border: 1px solid rgba(16, 185, 129, 0.15); }
.toast-error { background: var(--danger-bg); color: var(--danger); border: 1px solid rgba(244, 63, 94, 0.15); }
@keyframes toastIn { from { transform: translateX(120%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ===== Email Layout (classic 3-pane) ===== */
.email-layout {
  display: flex;
  flex-direction: column;
  height: calc(100vh - var(--topbar-h) - 56px);
  gap: 0;
}
.email-toolbar {
  padding: 12px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  flex-wrap: wrap;
}
.email-panes {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 0;
  flex: 1;
  min-height: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
  backdrop-filter: var(--glass);
}
.email-list-pane {
  overflow-y: auto;
  border-right: 1px solid var(--border);
}
.email-detail-pane {
  overflow-y: auto;
  padding: 24px;
}

/* ===== Email Items ===== */
.email-item {
  padding: 14px 18px; border-bottom: 1px solid var(--border);
  cursor: pointer; transition: all var(--transition);
}
.email-item:last-child { border-bottom: none; }
.email-item:hover { background: var(--bg-hover); }
.email-item.active { background: var(--bg-active); }
.email-item.unread { border-left: 3px solid var(--primary); }
.email-subject { font-size: 13.5px; font-weight: 560; margin-bottom: 3px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.email-from { font-size: 12px; color: var(--text-muted); margin-bottom: 2px; }
.email-preview { font-size: 12px; color: var(--text-dim); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.email-meta { display: flex; justify-content: space-between; align-items: center; margin-top: 6px; }
.email-date { font-size: 11px; color: var(--text-dim); }

/* Detail */
.detail-pane { padding: 0; }
.detail-pane h2 { font-size: 17px; font-weight: 600; margin-bottom: 14px; line-height: 1.4; }
.detail-meta { font-size: 12.5px; color: var(--text-muted); margin-bottom: 20px; line-height: 1.8; }
.detail-body { font-size: 14px; line-height: 1.7; }
.detail-body iframe { width: 100%; border: none; min-height: 400px; background: #fff; border-radius: var(--radius); }

/* ===== Loading / Empty ===== */
.loading, .empty-state {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 60px 20px; color: var(--text-dim); font-size: 13.5px;
}
.spinner {
  width: 26px; height: 26px;
  border: 2.5px solid var(--border-light); border-top-color: var(--primary);
  border-radius: 50%; animation: spin 0.7s linear infinite; margin-bottom: 14px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Toolbar ===== */
.toolbar { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; flex-wrap: wrap; }
.toolbar .search-input, .email-toolbar .search-input {
  padding: 8px 14px; background: var(--bg-input);
  border: 1px solid var(--border-light); border-radius: 8px;
  color: var(--text); font-size: 13px; outline: none; min-width: 200px;
  transition: all var(--transition);
}
.toolbar .search-input:focus, .email-toolbar .search-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-bg); }

/* Email link (account row → jump to that account's mailbox) */
.email-link {
  font-family: 'Cascadia Code', 'Fira Code', monospace;
  font-size: 13px;
  color: var(--primary-light);
  cursor: pointer;
  border-bottom: 1px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}
.email-link:hover {
  color: var(--primary);
  border-bottom-color: var(--border-focus);
}

/* Color Dot */
.color-dot {
  display: inline-block; width: 8px; height: 8px;
  border-radius: 50%; margin-right: 8px; vertical-align: middle;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .sidebar { width: 64px; }
  .sidebar-header h1, .nav-item span, .sidebar-footer span { display: none; }
  .sidebar-header { padding: 18px; justify-content: center; }
  .sidebar-logo { width: 32px; height: 32px; border-radius: 8px; }
  .nav-item { justify-content: center; padding: 12px; }
  .nav-item.active::before { display: none; }
  .main { margin-left: 64px; }
  .content { padding: 16px; }
  .topbar { padding: 0 16px; }
  .modal { width: 95vw; padding: 20px; }
  .theme-toggle { display: none; }
}

/* ===== Circle Swoop theme transition ===== */
/* The clip-path circle expansion is driven from JS (setTheme).
   Disable the default cross-fade so the circular mask owns the transition. */
::view-transition-old(root),
::view-transition-new(root) {
  animation: none;
  mix-blend-mode: normal;
}
/* New (incoming) theme sits on top so the circle reveals it */
::view-transition-new(root) { z-index: 1; }
::view-transition-old(root) { z-index: 0; }

/* ===== Ambient low-frequency breathing glow ===== */
/* ~0.125 Hz (8s round trip), opacity 0.15 <-> 0.35 — only animates opacity
   so it stays on the compositor (no reflow, near-zero CPU). */
@keyframes breathe {
  0%, 100% { opacity: 0.15; }
  50%      { opacity: 0.35; }
}
.card, .btn-primary { position: relative; }
.card::after, .btn-primary::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  pointer-events: none;
  z-index: -1;
  background: radial-gradient(circle at 50% 0%, var(--primary-glow), transparent 70%);
  animation: breathe 8s ease-in-out infinite;
}

/* Breathing focus ring for inputs (replaced elements can't host ::after,
   so the breathing lives on box-shadow instead). */
@keyframes breathe-ring {
  0%, 100% { box-shadow: 0 0 0 3px rgba(99,102,241,0.12); }
  50%      { box-shadow: 0 0 0 4px rgba(99,102,241,0.30); }
}
.form-input:focus, .form-select:focus, .form-textarea:focus,
.search-input:focus {
  animation: breathe-ring 8s ease-in-out infinite;
}

/* Respect reduced-motion: hold a static mid value, no looping */
@media (prefers-reduced-motion: reduce) {
  .card::after, .btn-primary::after { animation: none; opacity: 0.22; }
  .form-input:focus, .form-select:focus, .form-textarea:focus,
  .search-input:focus { animation: none; }
}