/* ============================================================
   TempMail - Styles
   ============================================================ */

:root {
  --bg-primary: #f6f8fb;
  --bg-secondary: #ffffff;
  --bg-tertiary: #eef3f8;
  --text-primary: #172033;
  --text-secondary: #526173;
  --text-muted: #7a8796;
  --accent: #0f6bff;
  --accent-hover: #0b56cc;
  --accent-subtle: rgba(15, 107, 255, 0.1);
  --danger: #d92d20;
  --danger-hover: #b42318;
  --border: #d8e1ec;
  --border-light: #edf1f6;
  --success: #12a150;
  --warning: #b7791f;
  --shadow: rgba(18, 32, 51, 0.12);
  --radius: 8px;
  --radius-lg: 12px;
  --transition: 0.2s ease;
  --font-sans: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --font-mono: 'SF Mono', 'Cascadia Code', 'Fira Code', 'JetBrains Mono', Consolas, monospace;
  --toast-bg: #172033;
  --toast-text: #ffffff;
  --scrollbar-thumb: #c7d2df;
  --scrollbar-track: #f6f8fb;
}

/* ============================================================
   Reset & Base
   ============================================================ */

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
}

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

a:hover {
  text-decoration: underline;
}

/* ============================================================
   Layout
   ============================================================ */

.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

/* ============================================================
   Header
   ============================================================ */

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
  flex-shrink: 0;
}

.app-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.app-title .icon {
  font-size: 1.5rem;
}

.app-title .domain {
  color: var(--text-secondary);
  font-weight: 400;
}

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

.lang-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.8rem;
  font-family: var(--font-sans);
  transition: all var(--transition);
}

.lang-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ============================================================
   Address Bar
   ============================================================ */

.address-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  background: linear-gradient(180deg, #ffffff 0%, #f9fbfe 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  margin-bottom: 24px;
  box-shadow: 0 12px 30px var(--shadow);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.address-bar:hover {
  border-color: var(--accent);
}

.address-display {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 0;
}

.address-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.address-text {
  font-family: var(--font-mono);
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--accent);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.address-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.address-expiry {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  width: 100%;
  margin-top: 4px;
  padding-top: 8px;
  border-top: 1px solid var(--border-light);
  cursor: pointer;
  transition: color var(--transition);
}

.address-expiry:hover {
  color: var(--accent);
}

.address-expiry .expiry-time {
  font-family: var(--font-mono);
  color: #9a5b00;
  font-weight: 700;
}

.history-panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 12px 14px;
  margin-bottom: 24px;
  box-shadow: 0 8px 24px rgba(18, 32, 51, 0.07);
}

.history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.history-title {
  font-weight: 700;
  color: var(--text-primary);
}

.history-hint {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.history-list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 2px;
}

.history-empty {
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 6px 0;
}

.history-item {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fbfdff;
  overflow: hidden;
  flex: 0 0 auto;
}

.history-item.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-subtle);
}

.history-address,
.history-copy,
.history-delete {
  border: 0;
  background: transparent;
  font-family: var(--font-sans);
  cursor: pointer;
}

.history-address {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 8px 10px;
  min-width: 210px;
}

.history-email {
  font-family: var(--font-mono);
  color: var(--text-primary);
  font-weight: 700;
}

.history-meta {
  color: var(--text-muted);
  font-size: 0.72rem;
}

.history-copy,
.history-delete {
  width: 34px;
  color: var(--text-secondary);
  border-left: 1px solid var(--border-light);
}

.history-copy:hover {
  color: var(--accent);
  background: var(--accent-subtle);
}

.history-delete:hover {
  color: #ffffff;
  background: var(--danger);
}

.address-expiry .extend-hint {
  color: var(--text-muted);
  font-size: 0.75rem;
}

/* ============================================================
   Buttons
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  user-select: none;
}

.btn:hover {
  background: var(--border);
  border-color: var(--text-secondary);
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 500;
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn-danger {
  border-color: var(--danger);
  color: var(--danger);
}

.btn-danger:hover {
  background: var(--danger);
  color: #fff;
}

.btn-icon {
  padding: 8px;
  min-width: 36px;
  min-height: 36px;
}

.btn-copy {
  background: var(--accent-subtle);
  border-color: transparent;
  color: var(--accent);
}

.btn-copy:hover {
  background: var(--accent);
  color: #fff;
}

.btn-copy.copied {
  background: var(--success);
  border-color: var(--success);
  color: #fff;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* ============================================================
   Main Content - Split Pane
   ============================================================ */

.main-content {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 16px;
  flex: 1;
  min-height: 0;
}

/* ============================================================
   Inbox Panel (Left)
   ============================================================ */

.inbox-panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  max-height: calc(100vh - 300px);
  box-shadow: 0 8px 24px rgba(18, 32, 51, 0.07);
}

.inbox-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.inbox-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.inbox-count {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 400;
  background: var(--bg-tertiary);
  padding: 2px 8px;
  border-radius: 10px;
}

.inbox-list {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.inbox-item {
  display: flex;
  flex-direction: column;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-light);
  cursor: pointer;
  transition: background var(--transition);
  gap: 4px;
  position: relative;
}

.inbox-item:hover {
  background: #f7faff;
}

.inbox-item.active {
  background: #eef5ff;
  border-left: 3px solid var(--accent);
}

.inbox-item.unread {
  background: rgba(15, 107, 255, 0.07);
}

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

.inbox-item-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.inbox-item-sender {
  font-size: 0.82rem;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

.inbox-item-time {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  flex-shrink: 0;
}

.inbox-item-subject {
  font-size: 0.88rem;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.inbox-item-attachment {
  font-size: 0.7rem;
  color: var(--warning);
  display: flex;
  align-items: center;
  gap: 4px;
}

.inbox-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  color: var(--text-muted);
  text-align: center;
  gap: 8px;
}

.inbox-empty .icon {
  font-size: 2.5rem;
  opacity: 0.5;
}

.inbox-empty .text {
  font-size: 0.9rem;
}

.inbox-empty .hint {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ============================================================
   Email Detail Panel (Right)
   ============================================================ */

.email-panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  max-height: calc(100vh - 300px);
  box-shadow: 0 8px 24px rgba(18, 32, 51, 0.07);
}

.email-panel-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  color: var(--text-muted);
  padding: 48px 24px;
  text-align: center;
  gap: 12px;
}

.email-panel-placeholder .icon {
  font-size: 3rem;
  opacity: 0.3;
}

.email-panel-placeholder .text {
  font-size: 0.9rem;
}

.email-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.email-header-subject {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
  word-break: break-word;
}

.email-header-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.email-meta-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
}

.email-meta-label {
  color: var(--text-muted);
  min-width: 60px;
  flex-shrink: 0;
}

.email-meta-value {
  color: var(--text-secondary);
  word-break: break-all;
}

.email-meta-value.sender {
  color: var(--accent);
}

.email-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  font-family: var(--font-sans);
  line-height: 1.7;
  font-size: 0.9rem;
  color: #172033;
  background: #ffffff;
  word-wrap: break-word;
}

.email-body-rendered {
  color: #172033;
}

.email-body-rendered * {
  color: inherit;
}

.email-body-rendered a {
  color: var(--accent);
}

.email-body pre,
.email-body code {
  font-family: var(--font-mono);
}

.email-body pre {
  background: #f6f8fb;
  padding: 12px 16px;
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: 0.82rem;
  border: 1px solid var(--border);
  margin: 12px 0;
}

.email-body code {
  background: #eef3f8;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85em;
}

.email-body pre code {
  background: none;
  padding: 0;
  border-radius: 0;
}

.email-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  margin: 12px 0;
}

.email-body blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 12px;
  margin: 12px 0;
  color: var(--text-secondary);
}

.email-body a {
  color: var(--accent);
  text-decoration: underline;
}

.email-body table {
  border-collapse: collapse;
  width: 100%;
  margin: 12px 0;
}

.email-body th,
.email-body td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
}

.email-body th {
  background: #f6f8fb;
  font-weight: 600;
}

.email-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 16px 0;
}

.email-body-raw {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.5;
}

.email-body-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  background: #fbfdff;
}

.code-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 16px 20px 0;
  padding: 14px 16px;
  border: 1px solid rgba(15, 107, 255, 0.2);
  border-radius: var(--radius);
  background: #eef5ff;
}

.code-label {
  color: var(--text-secondary);
  font-size: 0.78rem;
}

.code-value {
  font-family: var(--font-mono);
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0;
}

.btn-copy-code {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
  font-weight: 700;
}

.btn-copy-code:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.toggle-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 4px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.75rem;
  font-family: var(--font-sans);
  transition: all var(--transition);
}

.toggle-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.toggle-btn:hover:not(.active) {
  border-color: var(--text-secondary);
  color: var(--text-primary);
}

/* ============================================================
   Attachments
   ============================================================ */

.email-attachments {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.attachments-title {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 500;
}

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

.attachment-item {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 0.78rem;
  transition: all var(--transition);
  cursor: pointer;
}

.attachment-item:hover {
  border-color: var(--accent);
  background: var(--accent-subtle);
}

.attachment-icon {
  font-size: 0.9rem;
  flex-shrink: 0;
}

.attachment-name {
  color: var(--text-primary);
  max-width: 160px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.attachment-size {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  flex-shrink: 0;
}

/* ============================================================
   Toast
   ============================================================ */

.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--toast-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 18px;
  box-shadow: 0 4px 20px var(--shadow);
  pointer-events: auto;
  min-width: 260px;
  max-width: 420px;
  animation: toast-in 0.3s ease forwards;
  font-size: 0.88rem;
  color: var(--toast-text);
}

.toast.toast-out {
  animation: toast-out 0.3s ease forwards;
}

.toast-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
}

.toast-message {
  flex: 1;
}

.toast-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1rem;
  padding: 2px;
  line-height: 1;
  transition: color var(--transition);
}

.toast-close:hover {
  color: var(--text-primary);
}

.toast-success {
  border-left: 3px solid var(--success);
}

.toast-error {
  border-left: 3px solid var(--danger);
}

.toast-info {
  border-left: 3px solid var(--accent);
}

.toast-warning {
  border-left: 3px solid var(--warning);
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes toast-out {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(100%);
  }
}

/* ============================================================
   Loading Spinner
   ============================================================ */

.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.spinner-lg {
  width: 32px;
  height: 32px;
  border-width: 3px;
}

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

/* ============================================================
   Loading Overlay
   ============================================================ */

.loading-overlay {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  gap: 12px;
  flex-direction: column;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ============================================================
   Scrollbar
   ============================================================ */

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}

::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

/* ============================================================
   New Email Pulse
   ============================================================ */

@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(59, 130, 246, 0);
  }
  50% {
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.3);
  }
}

.inbox-item.new-email {
  animation: pulse-glow 1.5s ease 2;
}

/* ============================================================
   Badge
   ============================================================ */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.7rem;
  font-weight: 500;
}

.badge-new {
  background: var(--accent);
  color: #fff;
}

/* ============================================================
   Mobile Overlay (Email Detail)
   ============================================================ */

.mobile-overlay {
  display: none;
}

.mobile-overlay-backdrop {
  display: none;
}

.mobile-overlay-header {
  display: none;
}

/* ============================================================
   Responsive - Tablet & Mobile
   ============================================================ */

@media (max-width: 900px) {
  .main-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .app-container {
    padding: 0 12px;
  }

  .app-header {
    padding: 12px 0;
    margin-bottom: 16px;
  }

  .app-title {
    font-size: 1.05rem;
  }

  .address-bar {
    padding: 12px 14px;
    gap: 8px;
  }

  .address-text {
    font-size: 0.9rem;
  }

  .address-actions .btn .btn-label {
    display: none;
  }

  .inbox-panel {
    max-height: none;
  }

  .email-panel {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    border-radius: 0;
    max-height: none;
    background: var(--bg-primary);
    border: none;
  }

  .email-panel.open {
    display: flex;
  }

  .mobile-overlay {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    background: var(--bg-secondary);
  }

  .mobile-overlay-back {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
  }

  .mobile-overlay-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
  }

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

  .email-body {
    padding: 16px;
  }

  .inbox-panel {
    border-radius: var(--radius);
  }

  .toast-container {
    left: 12px;
    right: 12px;
    top: 12px;
  }

  .toast {
    min-width: 0;
    max-width: none;
  }
}

@media (max-width: 480px) {
  .address-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .address-actions {
    justify-content: center;
  }

  .address-text {
    font-size: 0.82rem;
  }
}