/* =============================================================
   TempMail v3.5 — Enhanced UI/UX
   Author: Mehmet Kahya
   Created: 17 March 2024
   Last Updated: 10 February 2026
   ============================================================= */

/* ── CSS Custom Properties ── */
:root {
  --primary: #3B82F6;
  --primary-hover: #2563EB;
  --primary-light: rgba(59, 130, 246, 0.1);
  --primary-ultra-light: rgba(59, 130, 246, 0.05);
  --secondary: #60A5FA;
  --accent: #8B5CF6;
  --accent-light: rgba(139, 92, 246, 0.1);
  --success: #10B981;
  --success-light: rgba(16, 185, 129, 0.1);
  --warning: #F59E0B;
  --warning-light: rgba(245, 158, 11, 0.1);
  --error: #EF4444;
  --error-light: rgba(239, 68, 68, 0.1);
  --text: #1F2937;
  --text-secondary: #6B7280;
  --text-tertiary: #9CA3AF;
  --bg: #F3F4F6;
  --bg-secondary: #E5E7EB;
  --card: #FFFFFF;
  --card-hover: #FAFBFC;
  --border: #E5E7EB;
  --border-hover: #D1D5DB;
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -2px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 25px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.06);
  --shadow-xl: 0 20px 50px -12px rgba(0,0,0,0.15);
  --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.15);
  --gradient-start: #2563EB;
  --gradient-mid: #1D4ED8;
  --gradient-end: #1E40AF;
  --radius-sm: 0.375rem;
  --radius: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  --header-text: #FFFFFF;
  --modal-overlay: rgba(0, 0, 0, 0.6);
  --ring: 0 0 0 3px rgba(59, 130, 246, 0.3);
  --glass: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] {
  --primary: #60A5FA;
  --primary-hover: #3B82F6;
  --primary-light: rgba(96, 165, 250, 0.12);
  --primary-ultra-light: rgba(96, 165, 250, 0.05);
  --secondary: #93C5FD;
  --accent: #A78BFA;
  --accent-light: rgba(167, 139, 250, 0.12);
  --success: #34D399;
  --success-light: rgba(52, 211, 153, 0.12);
  --warning: #FBBF24;
  --warning-light: rgba(251, 191, 36, 0.12);
  --error: #F87171;
  --error-light: rgba(248, 113, 113, 0.12);
  --text: #F9FAFB;
  --text-secondary: #D1D5DB;
  --text-tertiary: #9CA3AF;
  --bg: #0F172A;
  --bg-secondary: #1E293B;
  --card: #1E293B;
  --card-hover: #263248;
  --border: #334155;
  --border-hover: #475569;
  --gradient-start: #3B82F6;
  --gradient-mid: #1D4ED8;
  --gradient-end: #1E40AF;
  --header-text: #FFFFFF;
  --modal-overlay: rgba(0, 0, 0, 0.75);
  --ring: 0 0 0 3px rgba(96, 165, 250, 0.3);
  --shadow-glow: 0 0 20px rgba(96, 165, 250, 0.1);
  --glass: rgba(30, 41, 59, 0.8);
  --glass-border: rgba(51, 65, 85, 0.5);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  transition: background 0.35s ease, color var(--transition);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Subtle background pattern */
body::before {
  content: '';
  position: fixed; inset: 0; z-index: -1;
  background-image: radial-gradient(var(--border) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.4;
  pointer-events: none;
}

/* ── Accessibility ── */
.visually-hidden {
  position: absolute !important; width: 1px !important; height: 1px !important;
  padding: 0 !important; margin: -1px !important; overflow: hidden !important;
  clip: rect(0,0,0,0) !important; white-space: nowrap !important; border: 0 !important;
}

.skip-link {
  position: absolute; left: -999px; top: 0; background: #111827; color: #fff;
  padding: 0.75rem 1rem; z-index: 9999; border-radius: var(--radius); font-weight: 600;
}
.skip-link:focus { left: 1rem; top: 1rem; box-shadow: 0 0 0 4px rgba(255,255,255,0.4); }

*:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

.hidden { display: none !important; }

/* ── Layout ── */
.app-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* ── Theme Toggle ── */
.theme-switch {
  position: fixed;
  top: 1rem;
  right: 1rem;
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  z-index: 100;
  border: 1px solid var(--glass-border);
  transition: all var(--transition);
}
.theme-switch:hover { box-shadow: var(--shadow-lg); transform: translateY(-1px); }
.theme-switch i { font-size: 0.875rem; color: var(--text-secondary); transition: all var(--transition); }
.theme-switch:hover i { color: var(--primary); }

.switch { position: relative; display: inline-block; width: 2.75rem; height: 1.5rem; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
  position: absolute; cursor: pointer; inset: 0;
  background: var(--border); transition: var(--transition); border-radius: var(--radius-full);
}
.slider::before {
  position: absolute; content: ""; height: 1.125rem; width: 1.125rem;
  left: 0.1875rem; bottom: 0.1875rem; background: white;
  transition: var(--transition); border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
input:checked + .slider { background: var(--primary); }
input:checked + .slider::before { transform: translateX(1.25rem); }

/* ── Header ── */
header {
  text-align: center;
  padding: 2.5rem 2rem 2rem;
  background: linear-gradient(-45deg, var(--gradient-start), var(--gradient-mid), var(--gradient-end), var(--gradient-start));
  background-size: 300% 300%;
  animation: gradientShift 8s ease infinite;
  border-radius: var(--radius-xl);
  box-shadow: 0 8px 32px rgba(37, 99, 235, 0.2);
  position: relative;
  overflow: hidden;
  color: var(--header-text);
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

header::before {
  content: '';
  position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
  animation: patternFloat 20s linear infinite;
}
@keyframes patternFloat {
  from { background-position: 0 0; }
  to { background-position: 60px 60px; }
}

header::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(45deg, rgba(255,255,255,0.1) 0%, transparent 100%);
  pointer-events: none;
}

.header-content {
  position: relative; z-index: 1;
  display: flex; flex-direction: column; align-items: center; gap: 0.75rem;
}

.logo-title {
  display: flex; align-items: center; gap: 0.75rem;
}
.logo-title i {
  font-size: 2.25rem;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
  animation: iconFloat 3s ease-in-out infinite;
}
@keyframes iconFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}
.logo-title h1 {
  font-size: 2rem; font-weight: 800; letter-spacing: -0.025em;
  text-shadow: 0 2px 4px rgba(0,0,0,0.15);
  background: linear-gradient(to right, #fff, rgba(255,255,255,0.85));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-subtitle {
  font-size: 0.9rem; opacity: 0.85; font-weight: 400;
  max-width: 400px; line-height: 1.5;
}

.header-badges {
  display: flex; gap: 0.5rem; margin-top: 0.25rem; flex-wrap: wrap; justify-content: center;
}
.badge {
  display: inline-flex; align-items: center; gap: 0.35rem;
  padding: 0.25rem 0.75rem; border-radius: var(--radius-full);
  font-size: 0.75rem; font-weight: 600;
  background: rgba(255,255,255,0.15); backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.2);
  transition: all var(--transition);
}
.badge:hover { background: rgba(255,255,255,0.25); transform: translateY(-1px); }
.badge i { font-size: 0.625rem; }

/* System status */
.system-status {
  display: flex; align-items: center; gap: 0.375rem;
}
.status-led {
  width: 8px; height: 8px; border-radius: 50%; transition: background var(--transition);
  background: var(--text-tertiary);
}
.status-led.online { background: #34D399; box-shadow: 0 0 6px rgba(52,211,153,0.5); }
.status-led.offline { background: #F87171; box-shadow: 0 0 6px rgba(248,113,113,0.5); }
.status-led.loading {
  background: #FBBF24; box-shadow: 0 0 6px rgba(251,191,36,0.5);
  animation: statusPulse 1s ease infinite;
}
@keyframes statusPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
#status-text { font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }

/* ── Cards ── */
.card {
  background: var(--card);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
  animation: cardSlideIn 0.5s ease-out;
  position: relative;
}
.card::before {
  content: '';
  position: absolute; top: 0; left: 1.5rem; right: 1.5rem; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  opacity: 0; transition: opacity var(--transition);
}
.card:hover {
  box-shadow: var(--shadow);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}
.card:hover::before { opacity: 1; }

@keyframes cardSlideIn {
  from { opacity: 0; transform: translateY(1rem); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Email Controls ── */
.email-controls {
  display: flex; flex-direction: column; gap: 1rem;
}

.email-input-group {
  position: relative; display: flex; gap: 0.5rem; align-items: stretch;
}
.input-icon {
  position: absolute; left: 0.875rem; top: 50%; transform: translateY(-50%);
  color: var(--text-tertiary); pointer-events: none; font-size: 0.875rem;
  transition: color var(--transition);
}
.email-input-group:focus-within .input-icon { color: var(--primary); }
.email-input-group input {
  flex: 1;
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text);
  background: var(--bg);
  transition: all var(--transition);
  font-family: 'JetBrains Mono', 'Fira Code', monospace, sans-serif;
  letter-spacing: 0.01em;
}
.email-input-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: var(--ring);
  background: var(--card);
}
.email-input-group .icon-button {
  border-radius: var(--radius);
}
/* Copy success state */
.email-input-group .icon-button.copied {
  background: var(--success-light);
  border-color: var(--success);
  color: var(--success);
  animation: copyPop 0.3s var(--transition-spring);
}
@keyframes copyPop {
  0% { transform: scale(1); }
  50% { transform: scale(1.15); }
  100% { transform: scale(1); }
}

.controls-row {
  display: flex; gap: 0.75rem; flex-wrap: wrap; align-items: center;
}

.button-group {
  display: flex; gap: 0.5rem; flex: 1; min-width: 0;
}

/* ── Buttons ── */
button {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.625rem 1.25rem; border: none; border-radius: var(--radius);
  font-size: 0.8125rem; font-weight: 600; color: white;
  background: var(--primary); cursor: pointer; transition: all var(--transition);
  white-space: nowrap; position: relative; overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}
/* Ripple effect */
button .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.35);
  transform: scale(0);
  animation: rippleAnim 0.6s ease-out;
  pointer-events: none;
}
@keyframes rippleAnim {
  to { transform: scale(4); opacity: 0; }
}
button::after {
  content: ''; position: absolute; inset: 0; background: rgba(255,255,255,0);
  transition: background var(--transition);
}
button:hover::after { background: rgba(255,255,255,0.1); }
button:hover { background: var(--primary-hover); transform: translateY(-1px); box-shadow: var(--shadow); }
button:active { transform: translateY(0) scale(0.98); box-shadow: none; transition-duration: 0.1s; }

.primary-button {
  background: var(--primary);
  flex: 1; min-width: 0;
}
.primary-button:hover { background: var(--primary-hover); }

.icon-button {
  padding: 0.625rem; min-width: 2.5rem;
  background: var(--bg); color: var(--text); border: 1px solid var(--border);
}
.icon-button:hover {
  background: var(--bg-secondary); border-color: var(--border-hover); color: var(--text);
}
.icon-button::after { display: none; }

.danger-button { background: var(--error); }
.danger-button:hover { background: #DC2626; }

.ghost-button {
  background: transparent; color: var(--text-secondary); border: 1px solid var(--border);
}
.ghost-button:hover { background: var(--bg-secondary); color: var(--text); border-color: var(--border-hover); }

/* ── Auto-refresh ── */
.auto-refresh {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: var(--bg); border-radius: var(--radius);
  border: 1px solid var(--border);
  font-size: 0.8125rem;
}
.checkbox-label {
  display: flex; align-items: center; gap: 0.375rem; cursor: pointer;
  color: var(--text-secondary); font-weight: 500;
}
.checkbox-label i { font-size: 0.8125rem; }
.checkbox-label input[type="checkbox"] {
  width: 1rem; height: 1rem; accent-color: var(--primary); cursor: pointer;
}
.select-input {
  padding: 0.375rem 0.5rem; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--card); color: var(--text); font-size: 0.75rem; font-weight: 500;
}
.countdown-text {
  font-size: 0.75rem; color: var(--text-tertiary); font-variant-numeric: tabular-nums;
  min-width: 2rem;
}

/* ── Countdown progress bar ── */
.countdown-bar-container {
  position: absolute; bottom: 0; left: 0; right: 0; height: 3px;
  background: var(--border); border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  overflow: hidden; opacity: 0; transition: opacity var(--transition);
}
.countdown-bar-container.active { opacity: 1; }
.countdown-bar {
  height: 100%; background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: inherit;
  transition: width 1s linear;
  width: 100%;
}

/* ── Domain selector ── */
.domain-selector {
  display: flex; align-items: center; gap: 0.5rem; margin-top: 0.25rem;
}
.domain-selector label {
  font-size: 0.75rem; color: var(--text-tertiary); font-weight: 500;
  display: flex; align-items: center; gap: 0.25rem;
}
.domain-selector label i { font-size: 0.625rem; }
.domain-select {
  padding: 0.375rem 0.5rem; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg); color: var(--text); font-size: 0.75rem; font-weight: 500;
  cursor: pointer; transition: all var(--transition);
  max-width: 180px;
}
.domain-select:focus { border-color: var(--primary); box-shadow: var(--ring); outline: none; }
.domain-select:hover { border-color: var(--border-hover); }

/* ── Search ── */
.search-container { margin-bottom: 1rem; }
.search-input-group {
  position: relative; max-width: 100%;
}
.search-input-group i {
  position: absolute; left: 0.875rem; top: 50%; transform: translateY(-50%);
  color: var(--text-tertiary); pointer-events: none; font-size: 0.8125rem;
}
#email-search {
  width: 100%;
  padding: 0.625rem 1rem 0.625rem 2.375rem;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.8125rem;
  color: var(--text);
  background: var(--bg);
  transition: all var(--transition);
}
#email-search:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: var(--ring);
  background: var(--card);
}
#email-search::placeholder { color: var(--text-tertiary); }

/* Email count + info bar */
.inbox-toolbar {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 0.75rem; flex-wrap: wrap; gap: 0.5rem;
}
.email-count {
  display: inline-flex; align-items: center; gap: 0.375rem;
  font-size: 0.8125rem; font-weight: 600; color: var(--text-secondary);
}
.email-count .count-badge {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 1.375rem; height: 1.375rem; padding: 0 0.375rem;
  border-radius: var(--radius-full);
  background: var(--primary-light); color: var(--primary);
  font-size: 0.6875rem; font-weight: 700;
  transition: all var(--transition-spring);
}
.email-count .count-badge.has-mail {
  background: var(--primary); color: white;
  animation: badgePop 0.4s var(--transition-spring);
}
@keyframes badgePop {
  0% { transform: scale(1); }
  50% { transform: scale(1.3); }
  100% { transform: scale(1); }
}
.inbox-actions { display: flex; gap: 0.375rem; }

/* ── Table ── */
.table-container {
  overflow-x: auto; border-radius: var(--radius);
  border: 1px solid var(--border);
}
table { width: 100%; border-collapse: collapse; }
th {
  background: var(--bg); color: var(--text-secondary);
  font-weight: 600; text-align: left; padding: 0.75rem 1rem;
  border-bottom: 2px solid var(--border); font-size: 0.75rem;
  text-transform: uppercase; letter-spacing: 0.04em;
}
td {
  padding: 0.75rem 1rem; border-bottom: 1px solid var(--border);
  color: var(--text-secondary); font-size: 0.8125rem;
  transition: all var(--transition);
}
tr:last-child td { border-bottom: none; }
tr { transition: all var(--transition); cursor: default; }
tr:hover td {
  background: var(--primary-ultra-light); color: var(--text);
}
tr:hover td:first-child {
  box-shadow: inset 3px 0 0 var(--primary);
}
th i { margin-right: 0.35rem; font-size: 0.6875rem; opacity: 0.6; }

/* Row entry animation for new emails */
tr.row-new {
  animation: rowSlideIn 0.4s ease-out;
}
@keyframes rowSlideIn {
  from { opacity: 0; transform: translateX(-1rem); }
  to { opacity: 1; transform: translateX(0); }
}

/* ── Email Actions ── */
.email-actions {
  display: flex; gap: 0.375rem;
}
.email-actions .icon-button {
  padding: 0.5rem; min-width: 2rem; height: 2rem;
  display: inline-flex; align-items: center; justify-content: center;
}

/* ── Skeleton Loader ── */
.skeleton-row {
  animation: shimmer 1.5s ease-in-out infinite;
  background: linear-gradient(90deg, var(--bg) 25%, var(--border) 50%, var(--bg) 75%);
  background-size: 200% 100%; height: 48px;
}
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }
.skeleton-cell { height: 12px; width: 65%; margin: 8px auto; border-radius: var(--radius-sm); background: var(--border); }

/* ── Responsive Email Cards ── */
.emails-responsive {
  display: none; gap: 0.75rem;
}
.email-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1rem;
  display: flex; flex-direction: column; gap: 0.5rem;
  transition: all 0.3s ease; cursor: default;
  animation: cardEntryStagger 0.4s ease-out backwards;
}
.email-card:nth-child(1) { animation-delay: 0s; }
.email-card:nth-child(2) { animation-delay: 0.05s; }
.email-card:nth-child(3) { animation-delay: 0.1s; }
.email-card:nth-child(4) { animation-delay: 0.15s; }
.email-card:nth-child(5) { animation-delay: 0.2s; }
@keyframes cardEntryStagger {
  from { opacity: 0; transform: translateY(0.5rem); }
  to { opacity: 1; transform: translateY(0); }
}
.email-card:hover {
  border-color: var(--primary); box-shadow: var(--shadow), var(--shadow-glow);
  transform: translateY(-2px);
}
.email-card:active { transform: translateY(0); transition-duration: 0.1s; }
.email-card-header {
  font-size: 0.6875rem; color: var(--text-tertiary);
  display: flex; justify-content: space-between; align-items: center;
}
.email-card-subject { font-weight: 600; font-size: 0.875rem; word-break: break-word; color: var(--text); }
.email-card-meta {
  font-size: 0.75rem; color: var(--text-secondary);
  display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center;
}
.email-card-meta i { font-size: 0.625rem; }
.email-card-actions { margin-top: 0.5rem; display: flex; gap: 0.375rem; }
.email-card-actions button { flex: 1; font-size: 0.75rem; padding: 0.5rem; }

@media (max-width: 820px) {
  .table-container table { display: none; }
  .emails-responsive { display: flex; flex-direction: column; }
  .emails-responsive[hidden] { display: none; }
}

/* ── Loading Spinner ── */
#loading-spinner { margin: 1rem auto; }
.spinner {
  width: 2rem; height: 2rem;
  border: 3px solid var(--border);
  border-top: 3px solid var(--primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 1.5rem auto;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Error/Success Messages ── */
.error-message {
  padding: 0.75rem 1rem; border-radius: var(--radius);
  text-align: center; font-weight: 500; font-size: 0.8125rem; margin: 0.5rem 0;
}

/* ── Toast Notifications ── */
.toast-container {
  position: fixed; top: 1rem; left: 50%; transform: translateX(-50%);
  z-index: 10000; display: flex; flex-direction: column; gap: 0.5rem;
  pointer-events: none; max-width: 420px; width: calc(100% - 2rem);
}
.toast {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.875rem 1rem; border-radius: var(--radius);
  background: var(--card); border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: auto; font-size: 0.8125rem; font-weight: 500;
  color: var(--text);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.toast.toast-exit { animation: toastOut 0.3s ease forwards; }
.toast-icon {
  flex-shrink: 0; width: 1.5rem; height: 1.5rem; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; font-size: 0.6875rem;
}
.toast-success .toast-icon { background: var(--success-light); color: var(--success); }
.toast-error .toast-icon { background: var(--error-light); color: var(--error); }
.toast-info .toast-icon { background: var(--primary-light); color: var(--primary); }
.toast-warning .toast-icon { background: var(--warning-light); color: var(--warning); }
.toast-message { flex: 1; }
/* Toast progress bar */
.toast-progress {
  position: absolute; bottom: 0; left: 0; height: 2px;
  background: var(--primary); border-radius: 0 0 var(--radius) var(--radius);
  animation: toastProgress linear forwards;
}
.toast-success .toast-progress { background: var(--success); }
.toast-error .toast-progress { background: var(--error); }
.toast-warning .toast-progress { background: var(--warning); }
@keyframes toastProgress {
  from { width: 100%; }
  to { width: 0%; }
}
.toast-close {
  flex-shrink: 0; background: none; border: none; color: var(--text-tertiary);
  cursor: pointer; padding: 0.25rem; font-size: 0.875rem; line-height: 1;
}
.toast-close:hover { color: var(--text); }
.toast-close::after { display: none; }

@keyframes toastIn {
  from { opacity: 0; transform: translateY(-1rem) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes toastOut {
  to { opacity: 0; transform: translateY(-1rem) scale(0.95); }
}

/* ── Email Modal ── */
.email-modal {
  position: fixed; inset: 0;
  background: var(--modal-overlay);
  display: flex; align-items: center; justify-content: center;
  padding: 1.5rem; z-index: 5000;
  animation: modalOverlayIn 0.25s ease;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
@keyframes modalOverlayIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes modalOverlayOut { from { opacity: 1; } to { opacity: 0; } }

.email-modal-content {
  background: var(--card); padding: 0;
  border-radius: var(--radius-xl);
  max-width: 700px; width: 100%; max-height: 85vh;
  overflow: hidden; position: relative;
  box-shadow: var(--shadow-xl);
  animation: modalContentIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: flex; flex-direction: column;
  border: 1px solid var(--border);
}
@keyframes modalContentIn {
  from { opacity: 0; transform: scale(0.9) translateY(1.5rem); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--border);
  display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem;
  background: var(--bg);
}
.modal-header h2 {
  font-size: 1.0625rem; font-weight: 700; color: var(--text);
  word-break: break-word; line-height: 1.4;
}

.email-modal .close-btn {
  background: var(--bg-secondary); border: 1px solid var(--border); color: var(--text-secondary);
  cursor: pointer; padding: 0.375rem; border-radius: var(--radius-sm);
  transition: all var(--transition); flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  width: 2rem; height: 2rem;
}
.email-modal .close-btn:hover { background: var(--error-light); color: var(--error); border-color: var(--error); }
.email-modal .close-btn i { font-size: 0.875rem; }

/* Modal action toolbar */
.modal-actions {
  display: flex; gap: 0.375rem; padding: 0.75rem 1.5rem;
  border-bottom: 1px solid var(--border); background: var(--bg);
}
.modal-actions button {
  padding: 0.375rem 0.75rem; font-size: 0.75rem;
  background: var(--card); color: var(--text-secondary);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  gap: 0.375rem;
}
.modal-actions button:hover {
  background: var(--primary-light); color: var(--primary); border-color: var(--primary);
  transform: none; box-shadow: none;
}
.modal-actions button::after { display: none; }
.modal-actions button i { font-size: 0.6875rem; }

.email-meta {
  padding: 0.875rem 1.5rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.8125rem; color: var(--text-secondary);
  display: flex; flex-direction: column; gap: 0.25rem;
  background: var(--bg);
}
.email-meta p { display: flex; align-items: center; gap: 0.5rem; }
.email-meta p strong { color: var(--text); font-weight: 600; min-width: 3rem; }

.email-body {
  padding: 1.5rem; color: var(--text); line-height: 1.7;
  overflow-y: auto; flex: 1; font-size: 0.875rem;
}
.email-body img { max-width: 100%; height: auto; border-radius: var(--radius-sm); }
.email-body a { color: var(--primary); }
.email-body a:hover { text-decoration: underline; }

.attachments {
  padding: 1rem 1.5rem; border-top: 1px solid var(--border); background: var(--bg);
}
.attachments h3 { font-size: 0.8125rem; font-weight: 600; margin-bottom: 0.5rem; color: var(--text-secondary); }
.attachment-list { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.attachment-link {
  display: inline-flex; align-items: center; gap: 0.375rem;
  padding: 0.375rem 0.75rem; background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-secondary);
  text-decoration: none; font-size: 0.75rem; font-weight: 500;
  transition: all var(--transition);
}
.attachment-link:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary); transform: translateY(-1px); }
.attachment-link i { font-size: 0.6875rem; }

/* ── Keyboard shortcuts modal ── */
.shortcuts-overlay {
  position: fixed; inset: 0; background: var(--modal-overlay);
  display: flex; align-items: center; justify-content: center;
  z-index: 10001; animation: modalOverlayIn 0.2s ease;
  backdrop-filter: blur(4px);
}
.shortcuts-content {
  background: var(--card); border-radius: var(--radius-xl);
  padding: 2rem; max-width: 420px; width: calc(100% - 2rem);
  box-shadow: var(--shadow-xl); border: 1px solid var(--border);
  animation: modalContentIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.shortcuts-content h3 {
  font-size: 1rem; font-weight: 700; margin-bottom: 1rem;
  display: flex; align-items: center; gap: 0.5rem;
}
.shortcuts-content h3 i { color: var(--primary); }
.shortcut-list { display: flex; flex-direction: column; gap: 0.625rem; }
.shortcut-item {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 0.8125rem; color: var(--text-secondary);
}
.shortcut-item kbd {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.25rem 0.5rem; min-width: 1.5rem;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-sm); font-size: 0.6875rem;
  font-weight: 700; font-family: 'JetBrains Mono', monospace;
  color: var(--text); box-shadow: 0 1px 0 var(--border);
}
.shortcut-item span { display: flex; align-items: center; gap: 0.375rem; }
.shortcut-close {
  margin-top: 1.25rem; width: 100%;
  background: var(--bg); color: var(--text-secondary);
  border: 1px solid var(--border);
}
.shortcut-close:hover { background: var(--bg-secondary); color: var(--text); }

/* ── Keyboard shortcut hint (bottom right) ── */
.shortcut-hint {
  position: fixed; bottom: 1rem; right: 1rem;
  display: flex; align-items: center; gap: 0.375rem;
  padding: 0.375rem 0.75rem; background: var(--card);
  border: 1px solid var(--border); border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm); font-size: 0.6875rem; color: var(--text-tertiary);
  cursor: pointer; transition: all var(--transition); z-index: 50;
}
.shortcut-hint:hover { color: var(--text-secondary); border-color: var(--primary); }
.shortcut-hint kbd {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.125rem 0.375rem; background: var(--bg); border: 1px solid var(--border);
  border-radius: 3px; font-size: 0.625rem; font-weight: 700;
  font-family: 'JetBrains Mono', monospace; box-shadow: 0 1px 0 var(--border);
}

/* ── Empty State ── */
.empty-state {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 3rem 1rem; gap: 0.75rem; color: var(--text-tertiary);
}
.empty-state-icon {
  font-size: 3rem; opacity: 0.25;
  animation: emptyFloat 3s ease-in-out infinite;
}
@keyframes emptyFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(-6px) rotate(-3deg); }
  75% { transform: translateY(2px) rotate(2deg); }
}
.empty-state h4 { font-size: 0.9375rem; font-weight: 600; color: var(--text-secondary); }
.empty-state p { font-size: 0.8125rem; text-align: center; max-width: 280px; line-height: 1.6; }
.empty-state-hint {
  margin-top: 0.5rem; font-size: 0.75rem; color: var(--text-tertiary);
  display: flex; align-items: center; gap: 0.375rem;
}
.empty-state-hint kbd {
  display: inline-flex; padding: 0.125rem 0.375rem; background: var(--bg);
  border: 1px solid var(--border); border-radius: 3px; font-size: 0.625rem;
  font-weight: 700; font-family: 'JetBrains Mono', monospace;
}

/* ── Footer ── */
footer {
  margin-top: auto;
  padding: 1.5rem;
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  position: relative; overflow: hidden;
}
footer::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
  background-size: 200% 100%;
  animation: footerGradient 4s linear infinite;
}
@keyframes footerGradient {
  from { background-position: 0% 0; }
  to { background-position: 200% 0; }
}
.footer-content {
  display: flex; flex-direction: column; align-items: center;
  gap: 0.75rem; text-align: center;
}
.footer-content > p {
  font-size: 0.8125rem; color: var(--text-secondary); font-weight: 500;
}
.footer-content a { color: var(--primary); text-decoration: none; font-weight: 600; }
.footer-content a:hover { text-decoration: underline; }
.footer-content p i { margin-right: 0.35rem; color: var(--primary); }

.version { font-size: 0.6875rem; color: var(--text-tertiary); }

.social { display: flex; gap: 0.75rem; }
.social a {
  color: var(--text-secondary); font-size: 1.25rem;
  transition: all var(--transition); position: relative;
  display: flex; align-items: center; justify-content: center;
  width: 2.5rem; height: 2.5rem; border-radius: 50%;
  background: var(--bg);
}
.social a:hover {
  color: var(--primary); transform: translateY(-3px);
  box-shadow: var(--shadow), 0 4px 12px rgba(59, 130, 246, 0.2);
  background: var(--primary-light);
}

.footer-buttons { display: flex; gap: 0.5rem; flex-wrap: wrap; justify-content: center; }
.warning-button {
  background: var(--error); color: white;
  padding: 0.5rem 1rem; font-size: 0.75rem;
}
.warning-button:hover { background: #DC2626; }
.privacy-button {
  background: var(--bg); color: var(--text); border: 1px solid var(--border);
  padding: 0.5rem 1rem; font-size: 0.75rem;
}
.privacy-button:hover { background: var(--bg-secondary); }
.privacy-button a { color: inherit !important; text-decoration: none !important; }

/* ── Welcome Message ── */
.welcome-message {
  position: fixed; bottom: 1.5rem; right: 1.5rem;
  background: var(--glass); color: var(--text);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 1.5rem; border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl); max-width: 360px;
  z-index: 9001; border: 1px solid var(--glass-border);
  opacity: 0; transform: translateY(1.5rem) scale(0.95);
  transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.welcome-message.show { opacity: 1; transform: translateY(0) scale(1); }
.welcome-message-header {
  display: flex; align-items: center; gap: 0.625rem; margin-bottom: 0.75rem;
}
.welcome-message-header i { color: var(--primary); font-size: 1.25rem; }
.welcome-message-header h3 { font-size: 0.9375rem; font-weight: 700; }
.welcome-message-content {
  font-size: 0.8125rem; line-height: 1.6; color: var(--text-secondary);
}
.welcome-message-content ul { padding-left: 1.25rem; margin: 0.25rem 0; }
.welcome-message-content li { margin: 0.125rem 0; }
.welcome-message-actions { display: flex; justify-content: flex-end; margin-top: 1rem; }
.welcome-message-actions button {
  padding: 0.5rem 1.25rem; font-size: 0.8125rem;
  background: var(--primary); border-radius: var(--radius);
}

/* ── Session Timer ── */
.session-timer {
  display: flex; align-items: center; gap: 0.375rem;
  font-size: 0.75rem; color: var(--text-tertiary);
  font-variant-numeric: tabular-nums;
}
.session-timer i { font-size: 0.6875rem; }

/* ── Animations ── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-0.5rem); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(1.5rem); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideOut {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(1.5rem); }
}

/* Button icon animations */
.fa-rotate { transition: transform 0.3s ease; }
button:hover .fa-rotate { animation: spin 1s linear infinite; }
.fa-wand-magic-sparkles { transition: all 0.3s ease; }
button:hover .fa-wand-magic-sparkles { filter: brightness(1.2); transform: rotate(-10deg) scale(1.1); }

/* ── Tooltip ── */
[data-tooltip] {
  position: relative;
}
[data-tooltip]::before {
  content: attr(data-tooltip);
  position: absolute; bottom: calc(100% + 6px); left: 50%;
  transform: translateX(-50%) translateY(4px);
  padding: 0.375rem 0.625rem; border-radius: var(--radius-sm);
  background: var(--text); color: var(--card); font-size: 0.6875rem;
  font-weight: 500; white-space: nowrap;
  opacity: 0; pointer-events: none;
  transition: all 0.2s ease;
  z-index: 100;
}
[data-tooltip]::after {
  content: '';
  position: absolute; bottom: calc(100% + 2px); left: 50%;
  transform: translateX(-50%);
  border: 4px solid transparent;
  border-top-color: var(--text);
  opacity: 0; pointer-events: none;
  transition: all 0.2s ease;
  z-index: 100;
}
[data-tooltip]:hover::before { opacity: 1; transform: translateX(-50%) translateY(0); }
[data-tooltip]:hover::after { opacity: 1; }

/* ── Scroll-to-top button ── */
.scroll-top-btn {
  position: fixed; bottom: 1rem; left: 1rem;
  width: 2.5rem; height: 2.5rem; border-radius: 50%;
  background: var(--primary); color: white;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0; transform: translateY(1rem);
  transition: all 0.3s ease;
  z-index: 50; padding: 0; border: none;
  pointer-events: none;
}
.scroll-top-btn.visible {
  opacity: 1; transform: translateY(0); pointer-events: auto;
}
.scroll-top-btn:hover {
  transform: translateY(-2px); box-shadow: var(--shadow-xl);
  background: var(--primary-hover);
}
.scroll-top-btn::after { display: none; }

/* ── New mail indicator (enhanced) ── */
.new-mail-dot {
  display: inline-block; width: 6px; height: 6px; border-radius: 50%;
  background: var(--success); margin-right: 0.375rem; vertical-align: middle;
  animation: dotPulse 2s ease infinite;
  box-shadow: 0 0 6px var(--success);
}
@keyframes dotPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.5); }
}

/* ── Notification bell ── */
.notification-bell {
  position: relative; display: inline-flex;
}
.notification-bell .bell-badge {
  position: absolute; top: -4px; right: -4px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--error); color: white;
  font-size: 0.5rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  animation: bellBounce 0.5s var(--transition-spring);
  border: 2px solid var(--card);
}
@keyframes bellBounce {
  0% { transform: scale(0); }
  50% { transform: scale(1.3); }
  100% { transform: scale(1); }
}

/* ── Mobile FAB (Floating Action Button) ── */
.mobile-fab {
  display: none;
  position: fixed; bottom: 1.5rem; right: 1.5rem;
  z-index: 200;
}
.fab-main {
  width: 3.5rem; height: 3.5rem; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white; font-size: 1.25rem;
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition); border: none; padding: 0;
  position: relative; z-index: 2;
}
.fab-main:hover { transform: scale(1.1); box-shadow: 0 6px 24px rgba(59, 130, 246, 0.5); }
.fab-main::after { display: none; }
.fab-main.open { transform: rotate(45deg); }
.fab-main.open:hover { transform: rotate(45deg) scale(1.1); }

.fab-actions {
  position: absolute; bottom: calc(100% + 0.75rem); right: 0;
  display: flex; flex-direction: column-reverse; gap: 0.625rem;
  opacity: 0; pointer-events: none; transform: translateY(0.5rem);
  transition: all 0.25s ease;
}
.fab-actions.show { opacity: 1; pointer-events: auto; transform: translateY(0); }
.fab-action {
  width: 3rem; height: 3rem; border-radius: 50%;
  background: var(--card); color: var(--text);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.875rem; padding: 0; transition: all var(--transition);
}
.fab-action:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary); transform: none; box-shadow: var(--shadow-lg); }
.fab-action::after { display: none; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .app-container { padding: 0.75rem; gap: 1rem; }
  header { padding: 1.5rem 1rem; border-radius: var(--radius-lg); }
  .logo-title h1 { font-size: 1.5rem; }
  .logo-title i { font-size: 1.75rem; }
  .header-subtitle { font-size: 0.8rem; }
  .card { padding: 1rem; }
  .card::before { left: 1rem; right: 1rem; }
  .theme-switch { position: fixed; top: 0.75rem; right: 0.75rem; padding: 0.375rem 0.5rem; }
  .theme-switch i { font-size: 0.75rem; }
  .switch { width: 2.25rem; height: 1.25rem; }
  .slider::before { height: 0.875rem; width: 0.875rem; }
  input:checked + .slider::before { transform: translateX(1rem); }
  .email-controls { gap: 0.75rem; }
  .button-group { flex-direction: column; }
  .controls-row { flex-direction: column; }
  .auto-refresh { flex-wrap: wrap; }
  .domain-selector { flex-wrap: wrap; }

  /* Modal slides up from bottom on mobile */
  .email-modal { padding: 0; align-items: flex-end; }
  .email-modal-content {
    max-height: 92vh; border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    animation: modalSlideUp 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  }
  @keyframes modalSlideUp {
    from { opacity: 0; transform: translateY(100%); }
    to { opacity: 1; transform: translateY(0); }
  }
  .modal-header { padding: 1rem; }
  .modal-actions { padding: 0.5rem 1rem; }
  .email-meta { padding: 0.75rem 1rem; }
  .email-body { padding: 1rem; }
  .shortcut-hint { display: none; }
  .footer-buttons { flex-direction: column; }
  .footer-buttons button { width: 100%; }

  /* Show Mobile FAB */
  .mobile-fab { display: block; }
  .scroll-top-btn { bottom: 5.5rem; }
}

@media (max-width: 400px) {
  .logo-title h1 { font-size: 1.25rem; }
  .header-badges { gap: 0.375rem; }
  .badge { font-size: 0.6875rem; padding: 0.1875rem 0.5rem; }
}

/* ── Print ── */
@media print {
  .theme-switch, .toast-container, .shortcut-hint, header, footer,
  .email-controls, .search-container, .auto-refresh, .inbox-toolbar,
  .mobile-fab, .scroll-top-btn { display: none !important; }
  body { background: white; color: black; }
  body::before { display: none; }
  .card { box-shadow: none; border: 1px solid #ddd; transform: none !important; }
  .card::before { display: none; }
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-tertiary); }

/* ── Selection ── */
::selection { background: var(--primary-light); color: var(--primary-hover); }

/* ── Loading overlay for page-level operations ── */
.page-loading-bar {
  position: fixed; top: 0; left: 0; right: 0; height: 3px;
  z-index: 99999; pointer-events: none;
}
.page-loading-bar::after {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 100%;
  background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
  animation: pageLoadBar 1.5s ease-in-out infinite;
}
@keyframes pageLoadBar {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}