/* Google Authenticator Web - Modern Responsive Design */
:root {
  --bg-main: #0b0f19;
  --bg-card: #131b2e;
  --bg-card-hover: #1a243d;
  --bg-input: #1a2238;
  --bg-input-focus: #202b47;
  --border-color: #24304f;
  --border-color-focus: #3b82f6;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-rgb: 59, 130, 246;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --code-color: #38bdf8;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-input: #f8fafc;
  --bg-input-focus: #ffffff;
  --border-color: #e2e8f0;
  --border-color-focus: #3b82f6;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-rgb: 37, 99, 235;
  --success: #059669;
  --warning: #d97706;
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --code-color: #0284c7;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.25s ease, color 0.25s ease;
}

/* Header */
.app-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
  padding: 0.75rem 1.25rem;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: 980px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-primary);
  user-select: none;
}

.brand-icon {
  width: 32px;
  height: 32px;
  color: var(--primary);
  flex-shrink: 0;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Search bar */
.search-wrapper {
  position: relative;
  flex: 1;
  max-width: 340px;
}

.search-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 0.5rem 1rem 0.5rem 2.25rem;
  color: var(--text-primary);
  font-size: 0.875rem;
  outline: none;
  transition: var(--transition);
}

.search-input:focus {
  border-color: var(--border-color-focus);
  box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.15);
  background: var(--bg-input-focus);
}

.search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--text-muted);
  pointer-events: none;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  outline: none;
  user-select: none;
  white-space: nowrap;
}

.btn-icon {
  padding: 0.5rem;
  border-radius: var(--radius-md);
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.btn-icon:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.btn-icon svg {
  width: 18px;
  height: 18px;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.25);
}

.btn-secondary {
  background: var(--bg-input);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
  border-color: rgba(239, 68, 68, 0.3);
}

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

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Main Container */
.main-container {
  max-width: 980px;
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
  flex: 1;
}

/* Auth Screens (Lock / Setup) */
.auth-wrapper {
  min-height: calc(100vh - 150px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2rem;
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.auth-header {
  margin-bottom: 1.75rem;
}

.auth-icon-circle {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(var(--primary-rgb), 0.12);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
}

.auth-icon-circle svg {
  width: 32px;
  height: 32px;
}

.auth-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.auth-subtitle {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.form-group {
  margin-bottom: 1.25rem;
  text-align: left;
}

.form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.input-password-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.form-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.65rem 0.85rem;
  font-size: 0.9375rem;
  color: var(--text-primary);
  outline: none;
  transition: var(--transition);
}

.form-input:focus {
  border-color: var(--border-color-focus);
  background: var(--bg-input-focus);
  box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.15);
}

.password-toggle-btn {
  position: absolute;
  right: 0.5rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
}

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

.password-toggle-btn svg {
  width: 18px;
  height: 18px;
}

.form-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

.auth-alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  margin-bottom: 1.25rem;
  display: none;
  text-align: left;
}

.auth-alert.error {
  display: block;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--danger);
}

.auth-alert.success {
  display: block;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--success);
}

/* Accounts Grid / List */
.accounts-section {
  display: block;
}

.section-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.accounts-count-badge {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  background: var(--bg-card);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
}

.accounts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

/* Account Card - Google Authenticator Style */
.account-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.account-card:hover {
  border-color: rgba(var(--primary-rgb), 0.4);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.account-card.is-pinned {
  border-color: rgba(var(--primary-rgb), 0.6);
  box-shadow: 0 0 0 1px rgba(var(--primary-rgb), 0.2);
}

.account-card.is-pinned::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.service-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.service-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--bg-input);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
  flex-shrink: 0;
  border: 1px solid var(--border-color);
}

.service-avatar svg {
  width: 22px;
  height: 22px;
}

.service-details {
  min-width: 0;
  overflow: hidden;
}

.service-issuer {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.service-account {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-menu-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.card-menu-btn:hover {
  color: var(--text-primary);
  background: var(--bg-input);
}

.card-menu-btn svg {
  width: 18px;
  height: 18px;
}

/* Code & Timer Display */
.card-body {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.25rem 0;
}

.code-display {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--code-color);
  user-select: all;
  transition: color 0.2s ease;
}

.code-group {
  display: inline-block;
}

/* Circular Timer */
.timer-container {
  position: relative;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.timer-svg {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%;
}

.timer-circle-bg {
  fill: none;
  stroke: var(--border-color);
  stroke-width: 3;
}

.timer-circle-progress {
  fill: none;
  stroke: var(--primary);
  stroke-width: 3;
  stroke-linecap: round;
  transition: stroke-dashoffset 1s linear, stroke 0.3s ease;
}

.timer-text {
  position: absolute;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Warning & Danger Timer States */
.timer-warning .timer-circle-progress {
  stroke: var(--warning);
}
.timer-warning ~ .code-display {
  color: var(--warning);
}

.timer-danger .timer-circle-progress {
  stroke: var(--danger);
  animation: pulse-ring 1s infinite alternate;
}
.timer-danger ~ .code-display {
  color: var(--danger);
}

@keyframes pulse-ring {
  0% { opacity: 0.7; }
  100% { opacity: 1; filter: drop-shadow(0 0 3px var(--danger)); }
}

/* Card Action Footer */
.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 0.75rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.copy-hint {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.copy-hint svg {
  width: 14px;
  height: 14px;
}

.card-actions-quick {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.action-chip {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem 0.4rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  transition: var(--transition);
}

.action-chip:hover {
  color: var(--text-primary);
  background: var(--bg-input);
}

.action-chip svg {
  width: 14px;
  height: 14px;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 4rem 1.5rem;
  background: var(--bg-card);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
}

.empty-icon {
  width: 56px;
  height: 56px;
  color: var(--text-muted);
  margin: 0 auto 1rem;
}

.empty-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.empty-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  max-width: 400px;
  margin: 0 auto 1.5rem;
}

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

.modal-container {
  width: 100%;
  max-width: 480px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: translateY(16px);
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

.modal-backdrop.is-open .modal-container {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
}

.modal-close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: var(--radius-sm);
  display: flex;
}

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

.modal-close-btn svg {
  width: 20px;
  height: 20px;
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  background: var(--bg-main);
}

/* Tabs */
.tabs-nav {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.25rem;
}

.tab-btn {
  flex: 1;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 0.65rem 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

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

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  font-weight: 600;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

/* Drag & Drop Area for QR */
.qr-drop-zone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  text-align: center;
  background: var(--bg-input);
  cursor: pointer;
  transition: var(--transition);
  margin-bottom: 1rem;
}

.qr-drop-zone:hover,
.qr-drop-zone.dragover {
  border-color: var(--primary);
  background: rgba(var(--primary-rgb), 0.08);
}

.qr-drop-icon {
  width: 48px;
  height: 48px;
  color: var(--text-muted);
  margin: 0 auto 0.75rem;
}

.qr-drop-text {
  font-size: 0.875rem;
  color: var(--text-primary);
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.qr-drop-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Toast Notification */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.toast {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  padding: 0.75rem 1.25rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
  pointer-events: auto;
  animation: slide-in 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  max-width: 360px;
}

.toast.success {
  border-left: 4px solid var(--success);
}

.toast.error {
  border-left: 4px solid var(--danger);
}

.toast-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.toast.success .toast-icon {
  color: var(--success);
}

.toast.error .toast-icon {
  color: var(--danger);
}

@keyframes slide-in {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Mobile Responsiveness */
@media (max-width: 640px) {
  .header-inner {
    flex-wrap: wrap;
  }

  .search-wrapper {
    order: 3;
    max-width: 100%;
    width: 100%;
  }

  .accounts-grid {
    grid-template-columns: 1fr;
  }

  .code-display {
    font-size: 1.75rem;
  }

  .main-container {
    padding: 1rem 0.75rem 3rem;
  }
}