/* Premium Custom Styling for TempMail Pro */

:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  --card-bg: rgba(17, 24, 39, 0.75);
  --card-border: rgba(255, 255, 255, 0.08);
  
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --color-primary: #7c4dff; /* Royal Violet */
  --color-primary-glow: rgba(124, 77, 255, 0.35);
  --color-secondary: #00e5ff; /* Cyan Accent */
  --color-secondary-glow: rgba(0, 229, 255, 0.25);
  
  --color-success: #00e676;
  --color-warning: #ffb300;
  --color-danger: #ff1744;
  --color-info: #2979ff;
  
  --font-display: 'Space Grotesk', system-ui, -apple-system, sans-serif;
  --font-body: 'Outfit', system-ui, -apple-system, sans-serif;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset and Global Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
}

/* Decorative Background Orbs */
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -1;
  pointer-events: none;
  opacity: 0.15;
}

.orb-1 {
  width: 400px;
  height: 400px;
  background: var(--color-primary);
  top: -100px;
  right: -50px;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: var(--color-secondary);
  bottom: -150px;
  left: -100px;
}

.orb-3 {
  width: 300px;
  height: 300px;
  background: var(--color-primary);
  top: 40%;
  left: 30%;
  opacity: 0.08;
}

/* App Container */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header & Navigation */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--card-border);
}

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

.logo-icon {
  font-size: 28px;
  color: var(--color-secondary);
  filter: drop-shadow(0 0 8px var(--color-secondary-glow));
}

.logo h1 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.logo h1 span {
  color: var(--color-primary);
  filter: drop-shadow(0 0 6px var(--color-primary-glow));
}

.nav-tabs {
  display: flex;
  gap: 8px;
  background: var(--bg-secondary);
  padding: 6px;
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

.tab-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
}

.tab-btn.active {
  color: var(--text-primary);
  background: var(--color-primary);
  box-shadow: 0 4px 14px var(--color-primary-glow);
}

/* App Main Content */
.app-content {
  flex: 1;
  padding: 20px 0;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.4s ease-out forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Card Styling (Glassmorphism) */
.card {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
  margin-bottom: 24px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.card-header {
  padding: 12px 18px;
  border-bottom: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-header h3 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.card-body {
  padding: 14px;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

/* Email Generator Section */
.generator-card {
  border-left: 4px solid var(--color-primary);
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.generator-group {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
}

.select-wrapper {
  flex: 1;
  position: relative;
}

.form-select {
  width: 100%;
  height: 40px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 14px;
  padding: 0 12px;
  padding-right: 36px;
  outline: none;
  cursor: pointer;
  appearance: none;
  transition: var(--transition);
}

.form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-glow);
}

.select-wrapper::after {
  content: '\f107';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  pointer-events: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  height: 40px;
  padding: 0 16px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 12px var(--color-primary-glow);
}

.btn-primary:hover {
  background: #6838df;
  box-shadow: 0 6px 16px var(--color-primary-glow);
  transform: translateY(-1px);
}

.btn-block {
  width: 100%;
}

/* Email Display Bar */
.email-display-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(0, 229, 255, 0.25);
  box-shadow: inset 0 0 8px rgba(0, 229, 255, 0.05);
  border-radius: var(--radius-md);
  padding: 6px 12px; /* Slim and centered padding */
  margin-bottom: 8px; /* Reduced margin */
}

.email-address-text {
  font-family: var(--font-display);
  font-size: 15px; /* Proportional font size */
  font-weight: 600;
  color: var(--color-secondary);
  letter-spacing: 0.5px;
  word-break: break-all;
}

.email-address-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-secondary);
  letter-spacing: 0.5px;
  padding: 0;
  margin-right: 12px;
  width: 100%;
}

.email-address-input::placeholder {
  color: var(--text-muted);
  font-weight: 400;
  font-size: 14px;
}

.btn-action {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--card-border);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 13px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.btn-action:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 4px 10px var(--color-primary-glow);
}

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

/* Status Bar */
.status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-secondary);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-success);
  box-shadow: 0 0 8px var(--color-success);
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.9); opacity: 0.6; }
  50% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.6; }
}

.countdown-wrapper {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}

#countdown {
  color: var(--color-warning);
}

/* Grid Layout for Inbox */
.inbox-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 24px;
  height: 600px;
}

.mail-list-container {
  display: flex;
  flex-direction: column;
}

.card-header-title-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  flex: 1;
  margin-right: 12px;
}

.inbox-subtitle {
  font-size: 11px;
  color: var(--text-secondary);
  word-break: break-all;
  font-family: var(--font-body);
  font-weight: 400;
  margin-top: 2px;
}

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

.badge {
  background: var(--bg-tertiary);
  color: var(--color-secondary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 30px;
  border: 1px solid rgba(0, 229, 255, 0.15);
  white-space: nowrap;
}

.btn-icon {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 16px;
  cursor: pointer;
  transition: var(--transition);
  padding: 6px;
  border-radius: 50%;
}

.btn-icon:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.btn-icon.spinning i {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.mail-list-body {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
}

/* Mail Items */
.mail-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  padding: 5px 16px;
  margin-bottom: 12px;
  cursor: pointer;
  transition: var(--transition);
}

.mail-item:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.06);
}

.mail-item.active {
  background: rgba(124, 77, 255, 0.1);
  border-color: rgba(124, 77, 255, 0.3);
}

.mail-item-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
}

.mail-sender {
  font-weight: 600;
  font-size: 14px;
  color: var(--text-primary);
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mail-date {
  font-size: 11px;
  color: var(--text-muted);
}

.mail-subject {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-secondary);
  margin-bottom: 6px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mail-snippet {
  font-size: 12px;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Empty States */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  padding: 40px;
  color: var(--text-secondary);
}

.empty-icon {
  font-size: 48px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.empty-state p {
  font-weight: 600;
  font-size: 16px;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.empty-state .subtext {
  font-size: 12px;
  color: var(--text-muted);
}

/* Mail Viewer Empty */
.mail-viewer-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-secondary);
}

.empty-viewer-icon {
  font-size: 64px;
  color: var(--text-muted);
  margin-bottom: 18px;
}

/* Mail Viewer Active */
.mail-viewer-container {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.mail-viewer-content {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

.mail-header-info {
  padding: 16px 20px;
  border-bottom: 1px solid var(--card-border);
  background: rgba(255, 255, 255, 0.01);
}

#view-subject {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.mail-meta-row {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  column-gap: 16px;
  row-gap: 6px;
  align-items: center;
}

.meta-item {
  display: flex;
  font-size: 13px;
  align-items: center;
}

.meta-item:not(:last-child)::after {
  content: "";
  display: inline-block;
  width: 1px;
  height: 12px;
  background: rgba(255, 255, 255, 0.1);
  margin-left: 16px;
}

.meta-label {
  color: var(--text-muted);
  font-weight: 500;
  margin-right: 6px;
}

.meta-value {
  color: var(--text-primary);
  font-weight: 400;
}

/* Body Switcher */
.body-switcher {
  display: flex;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--card-border);
  padding: 8px 24px;
  gap: 12px;
}

.switcher-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.switcher-btn:hover {
  color: var(--text-primary);
}

.switcher-btn.active {
  background: var(--bg-tertiary);
  color: var(--color-secondary);
  border: 1px solid rgba(0, 229, 255, 0.15);
}

/* Iframe and Text viewports */
.mail-body-wrapper {
  flex: 1;
  overflow: hidden;
  background: #fff; /* Good for reading standard emails */
  margin: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
  position: relative;
}

.mail-iframe {
  width: 100%;
  height: 100%;
  border: none;
  background: #fff;
}

.mail-text-view {
  width: 100%;
  height: 100%;
  overflow-y: auto;
  padding: 24px;
  font-family: monospace;
  font-size: 14px;
  white-space: pre-wrap;
  color: #111827; /* Dark text on white background */
  background: #fff;
}

/* Attachments */
.attachments-section {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed var(--card-border);
}

.attachments-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.attachments-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}

.attachment-card {
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  text-decoration: none;
  transition: var(--transition);
}

.attachment-card:hover {
  border-color: var(--color-secondary);
  background: rgba(0, 229, 255, 0.05);
}

.attachment-icon {
  font-size: 18px;
  color: var(--color-secondary);
}

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

.attachment-name {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.attachment-size {
  font-size: 10px;
  color: var(--text-muted);
}

.attachment-download {
  color: var(--text-secondary);
  font-size: 14px;
}

.attachment-card:hover .attachment-download {
  color: var(--color-secondary);
}

/* Two-column grids */
.grid-2col {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 24px;
}

/* Domain Forms & Tables */
.domain-form {
  margin-top: 16px;
}

.form-group {
  margin-bottom: 16px;
}

.form-input {
  width: 100%;
  height: 40px;
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 0 16px;
  outline: none;
  transition: var(--transition);
}

.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-glow);
}

/* Captcha styling */
.captcha-group {
  margin-top: 16px;
  margin-bottom: 16px;
}

/* Tables styling */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.table th, .table td {
  padding: 16px;
  border-bottom: 1px solid var(--card-border);
  font-size: 14px;
}

.table th {
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 0.5px;
}

.table td {
  color: var(--text-primary);
}

.table-loading {
  text-align: center;
  color: var(--text-secondary);
  padding: 32px 0;
}

/* Status Badges */
.badge-status {
  padding: 4px 10px;
  border-radius: 30px;
  font-size: 11px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.badge-status.verified {
  background: rgba(0, 230, 118, 0.1);
  color: var(--color-success);
  border: 1px solid rgba(0, 230, 118, 0.2);
}

.badge-status.unverified {
  background: rgba(255, 23, 68, 0.1);
  color: var(--color-danger);
  border: 1px solid rgba(255, 23, 68, 0.2);
}

.badge-status.pending {
  background: rgba(255, 179, 0, 0.1);
  color: var(--color-warning);
  border: 1px solid rgba(255, 179, 0, 0.2);
}

.action-buttons {
  display: flex;
  gap: 8px;
}

.btn-small {
  padding: 6px 12px;
  font-size: 12px;
  border-radius: var(--radius-sm);
}

.btn-outline-danger {
  background: transparent;
  color: var(--color-danger);
  border: 1px solid rgba(255, 23, 68, 0.3);
}

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

.btn-outline-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--card-border);
}

.btn-outline-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
}

/* DNS Guide Tab styling */
.dns-guide-card {
  border-left: 4px solid var(--color-secondary);
}

.dns-step {
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px dashed var(--card-border);
}

.dns-step:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.dns-step-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.step-badge {
  background: var(--color-secondary);
  color: var(--bg-primary);
  font-weight: 700;
  font-size: 11px;
  padding: 4px 8px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.dns-step h4 {
  font-size: 16px;
  font-weight: 600;
  font-family: var(--font-display);
}

.step-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.dns-table-wrapper {
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.dns-table {
  width: 100%;
  border-collapse: collapse;
}

.dns-table th, .dns-table td {
  padding: 12px 16px;
  text-align: left;
  font-size: 13px;
}

.dns-table th {
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-muted);
  font-weight: 600;
}

.dns-table td code {
  background: rgba(255, 255, 255, 0.06);
  padding: 3px 6px;
  border-radius: 4px;
  font-family: monospace;
  color: var(--color-secondary);
}

.badge-dns {
  background: rgba(0, 229, 255, 0.1);
  color: var(--color-secondary);
  border: 1px solid rgba(0, 229, 255, 0.2);
}

/* Info Alert */
.info-alert {
  background: rgba(41, 121, 255, 0.05);
  border: 1px solid rgba(41, 121, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-top: 20px;
  display: flex;
  gap: 14px;
}

.alert-icon {
  font-size: 20px;
  color: var(--color-info);
  margin-top: 2px;
}

.alert-content h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.alert-content p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.alert-content p strong {
  color: var(--text-primary);
}

/* Toast Notifications */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #111827;
  color: #fff;
  border: 1px solid var(--color-success);
  box-shadow: 0 4px 20px rgba(0, 230, 118, 0.25);
  padding: 14px 24px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 500;
  z-index: 9999;
  transform: translateY(100px);
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast-icon {
  color: var(--color-success);
  font-size: 18px;
}

/* Footer style */
.app-footer {
  padding: 24px 0;
  text-align: center;
  border-top: 1px solid var(--card-border);
  color: var(--text-muted);
  font-size: 13px;
}

/* Mobile Navigation and Layout Elements */
.mobile-bottom-nav {
  display: none; /* Hidden on desktop */
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 65px;
  background: rgba(11, 15, 25, 0.95);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--card-border);
  justify-content: space-around;
  align-items: center;
  padding: 0 10px;
  z-index: 999;
  box-shadow: 0 -4px 30px rgba(0, 0, 0, 0.5);
}

.mobile-nav-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-size: 10px;
  font-weight: 600;
  cursor: pointer;
  flex: 1;
  height: 100%;
  transition: var(--transition);
  font-family: var(--font-body);
}

.mobile-nav-btn i {
  font-size: 20px;
  transition: transform 0.2s ease, filter 0.2s ease;
}

.mobile-nav-btn:hover {
  color: var(--text-primary);
}

.mobile-nav-btn.active {
  color: var(--color-secondary);
}

.mobile-nav-btn.active i {
  transform: translateY(-2px);
  filter: drop-shadow(0 0 6px var(--color-secondary-glow));
}

.mail-viewer-mobile-nav {
  display: none; /* Hidden on desktop */
  padding: 12px 16px 0 16px;
  border-bottom: 1px solid var(--card-border);
  background: rgba(255, 255, 255, 0.01);
}

/* Responsive UI adjustments */
@media(max-width: 1024px) {
  .inbox-grid {
    grid-template-columns: 1fr;
    height: auto;
  }
  .mail-list-container {
    height: 350px;
  }
  .mail-viewer-container {
    height: 500px;
  }
  .grid-2col {
    grid-template-columns: 1fr;
  }
  .control-panel {
    grid-template-columns: 1fr;
  }
  .control-panel .card {
    height: auto;
  }
}

@media(max-width: 768px) {
  .app-container {
    padding: 0 16px;
  }
  
  .app-content {
    padding-bottom: 85px; /* Leave space for bottom nav */
  }
  
  /* Header clean layout for mobile */
  .app-header {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
  }
  
  .app-header .nav-tabs {
    display: none; /* Hide top nav tabs on mobile */
  }
  
  .logo h1 {
    font-size: 20px;
  }
  
  .logo-icon {
    font-size: 24px;
  }
  
  /* Profile layout on mobile */
  .user-profile-section {
    gap: 6px;
  }
  
  .user-welcome {
    display: none; /* Hide "Welcome, user" text */
  }
  
  .logged-in-user {
    padding: 4px 8px;
    gap: 8px;
  }
  
  .btn-upgrade {
    padding: 6px 8px;
  }
  
  #vip-btn-text, #deposit-btn-text {
    display: none; /* Hide "Go VIP" and "Deposit" text, keeping icon only */
  }
  
  .btn-login-nav span {
    display: none; /* Hide "Sign In / Register" text, keeping icon only */
  }
  
  .btn-login-nav {
    padding: 0;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  
  .btn-login-nav i {
    font-size: 16px;
    margin: 0;
  }
  
  /* Bottom Navigation */
  .mobile-bottom-nav {
    display: flex;
  }
  
  /* Inbox Tab Mobile Single-Column Toggle view */
  .inbox-grid {
    display: flex;
    flex-direction: column;
    height: auto;
    gap: 0;
  }
  
  .inbox-grid:not(.show-viewer) .mail-viewer-container {
    display: none !important;
  }
  
  .inbox-grid.show-viewer .mail-list-container {
    display: none !important;
  }
  
  .mail-list-container {
    height: 550px;
  }
  
  .mail-viewer-container {
    height: calc(100vh - 250px);
    min-height: 480px;
  }
  
  .mail-viewer-mobile-nav {
    display: block; /* Show back button on mobile */
  }
  
  /* Generator / Form elements on mobile */
  .generator-group {
    flex-direction: column;
    gap: 10px;
  }
  
  .form-select, .btn {
    width: 100%;
  }
  
  .email-display-wrapper {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 10px;
  }
  
  .email-address-text {
    text-align: center;
    font-size: 14px;
  }
  
  .display-actions {
    display: flex;
    justify-content: center;
  }
  
  .status-bar {
    flex-direction: column;
    gap: 8px;
    align-items: center;
    text-align: center;
  }
}

@media(max-width: 480px) {
  .app-container {
    padding: 0 12px;
  }
  
  .card-body {
    padding: 12px;
  }
  
  .card-header {
    padding: 10px 12px;
  }
  
  .otp-banner {
    flex-direction: column;
    gap: 12px;
    align-items: stretch;
    text-align: center;
  }
  
  .otp-banner-left {
    justify-content: center;
  }
  
  #otp-code-text {
    font-size: 18px;
  }
}

/* User Profile & Auth Styles */
.user-profile-section {
  display: flex;
  align-items: center;
}

.logged-in-user {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-secondary);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
}

.user-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.user-welcome {
  font-size: 13px;
  color: var(--text-primary);
}

.badge-vip {
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-vip.badge-regular {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.badge-vip.badge-vip-status {
  background: linear-gradient(135deg, #ffd700, #ff8c00);
  color: #111;
  box-shadow: 0 0 10px rgba(255, 215, 0, 0.3);
  border: none;
}

.btn-upgrade {
  background: transparent;
  border: 1px solid #ffd700;
  color: #ffd700;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.btn-upgrade:hover {
  background: #ffd700;
  color: #111;
  box-shadow: 0 0 12px rgba(255, 215, 0, 0.4);
}

.btn-logout-icon {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 16px;
  cursor: pointer;
  transition: var(--transition);
  padding: 6px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-logout-icon:hover {
  color: var(--color-danger);
  background: rgba(255, 23, 68, 0.05);
}

/* API Key Banner */
.inbox-user-header {
  margin-bottom: 24px;
}

.api-key-banner {
  border-left: 4px solid var(--color-secondary);
  margin-bottom: 0;
}

.banner-content {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.banner-content div {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
}

.banner-icon {
  color: var(--color-secondary);
  font-size: 18px;
}

.banner-content code {
  background: rgba(255, 255, 255, 0.06);
  padding: 3px 8px;
  border-radius: 4px;
  color: var(--color-secondary);
  font-family: monospace;
  font-size: 13px;
  word-break: break-all;
}

/* Modals System */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(5, 7, 12, 0.85);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  animation: fadeIn 0.2s ease-out forwards;
}

.modal-card {
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  width: 100%;
  max-width: 440px;
  overflow: hidden;
  animation: slideUp 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.15) forwards;
}

@keyframes slideUp {
  from { transform: translateY(30px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
}

.btn-close {
  background: transparent;
  border: none;
  color: #ff4d4d; /* Red color close button */
  font-size: 18px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
  border-radius: 50%;
}

.btn-close:hover {
  color: #ff1a1a;
  background: rgba(255, 77, 77, 0.1);
  transform: rotate(90deg); /* Beautiful micro-rotation */
}

.modal-body {
  padding: 24px;
}

.modal-toggle-text {
  margin-top: 16px;
  text-align: center;
  font-size: 13px;
  color: var(--text-secondary);
}

.modal-toggle-text a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
  margin-left: 4px;
}

.modal-toggle-text a:hover {
  text-decoration: underline;
}

/* Layout for Multi-Inbox Dashboard */
.inbox-main-layout {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.control-panel {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 24px;
  align-items: stretch; /* Stretch cards to equal height */
}

.control-panel .card {
  margin-bottom: 0;
}

.generator-card .card-body {
  justify-content: center;
}

#anonymous-inbox-card .card-body {
  justify-content: space-between;
}

#my-inboxes-card.card {
  height: 220px; /* Taller compact scrollable list card */
  padding: 10px 0; /* Keep padding clean for lists */
}

#my-inboxes-card.card .card-header {
  padding: 4px 18px 10px 18px;
}

#my-inboxes-card.card .card-body {
  min-height: 0;
}

/* Active Inboxes List */
.my-inboxes-list-body {
  flex: 1;
  overflow-y: auto;
  max-height: 100%;
  min-height: 0;
  padding: 6px 12px;
}

/* Warning Note */
.warning-note {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--color-warning);
  margin-top: 6px;
  opacity: 0.85;
}

.warning-note i {
  font-size: 12px;
}

.empty-inbox-state {
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
  padding: 32px 16px;
}

.my-inbox-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 6px 10px; /* More compact padding */
  margin-bottom: 6px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  flex-direction: row; /* Horizontal alignment */
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.my-inbox-item:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.12);
}

.my-inbox-item.active {
  background: rgba(124, 77, 255, 0.08);
  border-color: rgba(124, 77, 255, 0.25);
}

.my-inbox-info-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 0;
}

.my-inbox-address {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 70%;
}

.my-inbox-expiry {
  display: flex;
  align-items: center;
  gap: 4px;
  font-weight: 500;
  font-size: 11px;
}

.my-inbox-expiry.urgent {
  color: var(--color-danger);
}

.my-inbox-expiry.warning {
  color: var(--color-warning);
}

.my-inbox-expiry.good {
  color: var(--color-success);
}

.my-inbox-actions {
  display: flex;
  gap: 4px;
}

/* OTP Banner Styling */
.otp-banner {
  background: linear-gradient(135deg, rgba(124, 77, 255, 0.25), rgba(0, 229, 255, 0.15));
  border: 1px solid rgba(0, 229, 255, 0.25);
  box-shadow: 0 0 15px rgba(0, 229, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  margin: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  animation: glowPulse 2.5s infinite alternate;
}

@keyframes glowPulse {
  from { box-shadow: 0 0 8px rgba(124, 77, 255, 0.15); }
  to { box-shadow: 0 0 18px rgba(0, 229, 255, 0.25); }
}

.otp-banner-left {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-primary);
}

.otp-banner-icon {
  font-size: 18px;
  color: var(--color-secondary);
  filter: drop-shadow(0 0 4px var(--color-secondary-glow));
}

#otp-code-text {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  color: var(--color-secondary);
  letter-spacing: 1.5px;
  margin-left: 4px;
  filter: drop-shadow(0 0 5px var(--color-secondary-glow));
}

.my-inbox-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--card-border);
  color: var(--text-primary);
  width: 24px;
  height: 24px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  cursor: pointer;
  transition: var(--transition);
}

.my-inbox-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.my-inbox-btn.btn-delete-inbox:hover {
  background: var(--color-danger);
  border-color: var(--color-danger);
}

.my-inbox-btn.btn-extend-inbox {
  color: #ffd700;
  border-color: rgba(255, 215, 0, 0.2);
}

.my-inbox-btn.btn-extend-inbox:hover {
  background: #ffd700;
  border-color: #ffd700;
  color: #111;
}

/* API Docs Styling */
.code-box {
  background: #060913;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  margin-top: 10px;
  overflow-x: auto;
}

.code-box pre {
  margin: 0;
}

.code-box code {
  font-family: monospace;
  font-size: 13px;
  color: #a5d6ff;
}

.doc-api-key {
  color: #ff7b72;
  font-weight: 600;
}

@media(max-width: 1024px) {
  .control-panel {
    grid-template-columns: 1fr;
  }
  .control-panel .card {
    height: auto;
  }
}

/* Language Selector */
.lang-selector {
  margin-right: 8px;
}

.lang-select {
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  outline: none;
  cursor: pointer;
  transition: var(--transition);
}

.lang-select:hover, .lang-select:focus {
  border-color: var(--color-primary);
  background: rgba(255, 255, 255, 0.04);
}

.lang-select option {
  background: #0d1117;
  color: var(--text-primary);
}