/* ============================================
   📬 TempMail — Design System & Styles
   Glassmorphism Dark Mode UI
   ============================================ */

/* Google Font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ── CSS Variables ── */
:root {
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Colors */
  --bg-primary: #0a0e27;
  --bg-secondary: #111638;
  --bg-glass: rgba(17, 22, 56, 0.65);
  --bg-glass-hover: rgba(25, 32, 72, 0.75);
  --bg-card: rgba(20, 27, 65, 0.5);

  --accent: #6c5ce7;
  --accent-hover: #7c6ef7;
  --accent-glow: rgba(108, 92, 231, 0.3);
  --accent-secondary: #00cec9;
  --accent-danger: #ff6b6b;
  --accent-danger-hover: #ee5a5a;
  --accent-success: #00b894;
  --accent-warning: #fdcb6e;

  --text-primary: #e8eaf6;
  --text-secondary: #9fa8da;
  --text-muted: #5c6bc0;
  --text-bright: #ffffff;

  --border: rgba(99, 110, 180, 0.2);
  --border-hover: rgba(108, 92, 231, 0.4);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 30px var(--accent-glow);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* Animated gradient background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(108, 92, 231, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(0, 206, 201, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(108, 92, 231, 0.05) 0%, transparent 70%);
  z-index: 0;
  pointer-events: none;
  animation: bgPulse 8s ease-in-out infinite alternate;
}

@keyframes bgPulse {
  0% { opacity: 0.7; }
  100% { opacity: 1; }
}

/* ── Layout ── */
.app {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ── Header ── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-logo .logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: var(--shadow-glow);
}

.header-logo h1 {
  font-size: 1.35rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--text-bright), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-success);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ── Main Layout ── */
.main {
  display: grid;
  grid-template-columns: 340px 1fr;
  flex: 1;
  overflow: hidden;
}

@media (max-width: 768px) {
  .main {
    grid-template-columns: 1fr;
  }
}

/* ── Sidebar ── */
.sidebar {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: calc(100vh - 73px);
  overflow: hidden;
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid var(--border);
}

.sidebar-header h2 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #5a4bd1);
  color: var(--text-bright);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-hover), var(--accent));
  transform: translateY(-1px);
  box-shadow: 0 0 40px var(--accent-glow);
}

.btn-danger {
  background: rgba(255, 107, 107, 0.15);
  color: var(--accent-danger);
  border: 1px solid rgba(255, 107, 107, 0.2);
}

.btn-danger:hover {
  background: rgba(255, 107, 107, 0.25);
}

.btn-secondary {
  background: rgba(99, 110, 180, 0.15);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: rgba(99, 110, 180, 0.25);
  color: var(--text-primary);
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-sm);
}

.btn-block {
  width: 100%;
}

/* ── Generate Section ── */
.generate-section {
  display: flex;
  gap: 8px;
}

.generate-section select {
  flex: 1;
  padding: 10px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
}

.generate-section select:hover,
.generate-section select:focus {
  border-color: var(--border-hover);
  outline: none;
}

/* ── Address List ── */
.address-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

.address-list::-webkit-scrollbar {
  width: 4px;
}

.address-list::-webkit-scrollbar-track {
  background: transparent;
}

.address-list::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

.address-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  margin-bottom: 4px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  position: relative;
}

.address-item:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border);
}

.address-item.active {
  background: var(--bg-glass-hover);
  border-color: var(--border-hover);
  box-shadow: inset 0 0 20px rgba(108, 92, 231, 0.08);
}

.address-item .address-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.address-item .address-info {
  flex: 1;
  min-width: 0;
}

.address-item .address-email {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.address-item .address-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 2px;
}

.address-item .badge {
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 20px;
  font-weight: 600;
}

.badge-unread {
  background: var(--accent);
  color: var(--text-bright);
}

.badge-count {
  background: rgba(99, 110, 180, 0.2);
  color: var(--text-secondary);
}

.address-item .address-actions {
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: var(--transition);
}

.address-item:hover .address-actions {
  opacity: 1;
}

.address-actions .btn-icon {
  width: 28px;
  height: 28px;
  font-size: 12px;
  background: rgba(99, 110, 180, 0.15);
  color: var(--text-secondary);
  border: none;
}

.address-actions .btn-icon:hover {
  background: rgba(255, 107, 107, 0.2);
  color: var(--accent-danger);
}

/* ── Content Area ── */
.content {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 73px);
  overflow: hidden;
}

/* ── Inbox / Email List ── */
.inbox-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
}

.inbox-header h2 {
  font-size: 1.1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.inbox-header .inbox-count {
  font-size: 0.75rem;
  padding: 2px 10px;
  background: var(--bg-card);
  border-radius: 20px;
  color: var(--text-secondary);
}

.inbox-actions {
  display: flex;
  gap: 8px;
}

.email-list {
  flex: 1;
  overflow-y: auto;
}

.email-list::-webkit-scrollbar {
  width: 4px;
}

.email-list::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

.email-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
}

.email-item:hover {
  background: var(--bg-glass-hover);
}

.email-item.unread {
  background: rgba(108, 92, 231, 0.04);
}

.email-item.unread .email-subject {
  color: var(--text-bright);
  font-weight: 600;
}

.email-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #5a4bd1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-bright);
  flex-shrink: 0;
  text-transform: uppercase;
}

.email-body {
  flex: 1;
  min-width: 0;
}

.email-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 2px;
}

.email-sender {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.email-time {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

.email-subject {
  font-size: 0.85rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 2px;
}

.email-preview {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.email-item .attachment-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-left: 8px;
}

/* ── Email Detail View ── */
.email-detail {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.email-detail-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.email-detail-subject {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: 12px;
}

.email-detail-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.email-detail-from {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
}

.email-detail-from .avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-bright);
  text-transform: uppercase;
}

.from-info .from-name {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
}

.from-info .from-email {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.email-detail-date {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.email-detail-body {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

.email-detail-body iframe {
  width: 100%;
  border: none;
  min-height: 400px;
  border-radius: var(--radius-md);
  background: #ffffff;
}

.email-text-body {
  white-space: pre-wrap;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-primary);
}

.email-attachments {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  background: var(--bg-glass);
}

.email-attachments h4 {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 10px;
}

.attachment-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.attachment-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  color: var(--text-primary);
}

.attachment-item:hover {
  border-color: var(--border-hover);
  background: var(--bg-glass-hover);
}

.attachment-item .att-icon {
  font-size: 16px;
}

.attachment-item .att-name {
  font-size: 0.8rem;
  font-weight: 500;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.attachment-item .att-size {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* ── Empty States ── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 24px;
  text-align: center;
  flex: 1;
}

.empty-state .empty-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.empty-state p {
  font-size: 0.85rem;
  color: var(--text-muted);
  max-width: 320px;
  line-height: 1.6;
}

/* ── Toast Notification ── */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 20px;
  border-radius: var(--radius-md);
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 0.85rem;
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.3s ease-out;
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 380px;
}

.toast.success { border-color: var(--accent-success); }
.toast.error { border-color: var(--accent-danger); }
.toast.info { border-color: var(--accent); }

.toast-exit {
  animation: toastOut 0.3s ease-in forwards;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(20px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateY(0) scale(1); }
  to { opacity: 0; transform: translateY(20px) scale(0.95); }
}

/* ── Loading Spinner ── */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

.loading-overlay {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  flex: 1;
}

/* ── Mobile Responsive ── */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: 0;
    top: 73px;
    width: 100%;
    height: calc(100vh - 73px);
    z-index: 50;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .content {
    height: calc(100vh - 73px);
  }

  .mobile-toggle {
    display: flex !important;
  }

  .email-item {
    padding: 14px 16px;
  }

  .inbox-header {
    padding: 14px 16px;
  }

  .email-detail-header {
    padding: 16px;
  }

  .email-detail-body {
    padding: 16px;
  }
}

.mobile-toggle {
  display: none;
}

/* ── View Switcher (Inbox ↔ Detail) on mobile ── */
.back-btn {
  display: none;
}

@media (max-width: 768px) {
  .back-btn {
    display: inline-flex;
  }
}

/* ── Copy tooltip ── */
.copy-tooltip {
  position: absolute;
  top: -30px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-success);
  color: var(--text-bright);
  font-size: 0.7rem;
  padding: 4px 10px;
  border-radius: 6px;
  white-space: nowrap;
  animation: tooltipFade 1.5s ease forwards;
  pointer-events: none;
}

@keyframes tooltipFade {
  0% { opacity: 0; transform: translateX(-50%) translateY(5px); }
  20% { opacity: 1; transform: translateX(-50%) translateY(0); }
  80% { opacity: 1; }
  100% { opacity: 0; transform: translateX(-50%) translateY(-5px); }
}

/* ── Skeleton Loading ── */
.skeleton {
  background: linear-gradient(90deg, var(--bg-card) 25%, rgba(99, 110, 180, 0.15) 50%, var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-line {
  height: 12px;
  margin-bottom: 8px;
}

.skeleton-line.w75 { width: 75%; }
.skeleton-line.w50 { width: 50%; }
.skeleton-line.w30 { width: 30%; }

/* ── Refresh animation ── */
.rotating {
  animation: rotate360 1s linear infinite;
}

@keyframes rotate360 {
  to { transform: rotate(360deg); }
}