/* ============================================================
 * LOADING SCREEN STYLES
 * ============================================================ */

#loadingScreen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--color-bg) !important;
  background:
    radial-gradient(circle at 15% 20%, color-mix(in srgb, var(--color-brand-primary) 18%, transparent), transparent 30rem),
    radial-gradient(circle at 85% 75%, color-mix(in srgb, var(--color-brand-secondary) 14%, transparent), transparent 28rem),
    var(--color-bg) !important;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: var(--z-index-max);
  transition: opacity var(--duration-slow) var(--ease-out);
}

.loading-content {
  width: min(26rem, calc(100% - 3rem));
  text-align: center;
}

.loading-mark {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 0.45rem;
  height: 2.6rem;
  margin-bottom: var(--space-6);
}

.loading-mark span {
  width: 0.7rem;
  height: 0.7rem;
  background: linear-gradient(135deg, var(--color-brand-primary), var(--color-brand-secondary));
  border-radius: 0.18rem;
  box-shadow: 0 0.35rem 1.2rem color-mix(in srgb, var(--color-brand-primary) 32%, transparent);
  transform: rotate(45deg);
  animation: loading-mark-dance 1.4s var(--ease-in-out) infinite;
}

.loading-mark span:nth-child(2) { animation-delay: 0.14s; }
.loading-mark span:nth-child(3) { animation-delay: 0.28s; }

.loading-eyebrow {
  margin: 0 0 var(--space-2);
  color: var(--color-brand-primary);
  font: 600 0.72rem/1 var(--font-family-sans);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.loading-title {
  margin: 0;
  color: var(--color-text-primary);
  font: 500 clamp(1.7rem, 5vw, 2.25rem)/1.1 var(--font-family-serif);
  letter-spacing: -0.035em;
}

.loading-progress {
  height: 0.2rem;
  margin: var(--space-6) auto var(--space-4);
  overflow: hidden;
  border-radius: var(--radius-full);
  background: color-mix(in srgb, var(--color-border) 80%, transparent);
}

.loading-progress span {
  display: block;
  width: 38%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--color-brand-primary), var(--color-brand-secondary));
  animation: loading-progress 1.7s var(--ease-in-out) infinite;
}

#loadingScreen .loading-text {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-family: var(--font-family-sans);
}

@keyframes loading-mark-dance {
  0%, 60%, 100% { transform: rotate(45deg) translateY(0); opacity: 0.45; }
  30% { transform: rotate(45deg) translateY(-0.8rem); opacity: 1; }
}

@keyframes loading-progress {
  0% { transform: translateX(-110%); }
  100% { transform: translateX(370%); }
}

@media (prefers-reduced-motion: reduce) {
  .loading-mark span,
  .loading-progress span { animation: none; }
}

/* ============================================================
 * SETTINGS SCREEN STYLES
 * Production-quality settings with organized sections
 * ============================================================ */

/* Settings Container */
#settingsContainer {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  z-index: var(--z-index-fixed);
  display: none;
  overflow-y: auto;
}

#settingsContainer.active {
  display: block;
}

.settings-screen {
  max-width: var(--layout-max-width);
  margin: 0 auto;
  padding: var(--space-8);
  min-height: 100vh;
}

/* Settings Layout */
.settings-layout {
  display: grid;
  grid-template-columns: var(--layout-sidebar-width) 1fr;
  gap: var(--space-8);
  min-height: 600px;
}

@media (max-width: var(--breakpoint-lg)) {
  .settings-layout {
    grid-template-columns: 1fr;
  }
}

/* Settings Navigation */
.settings-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  position: sticky;
  top: var(--space-8);
  max-height: calc(100vh - var(--space-16));
  overflow-y: auto;
}

@media (max-width: var(--breakpoint-lg)) {
  .settings-nav {
    position: relative;
    top: 0;
    max-height: none;
    overflow-x: auto;
    flex-direction: row;
    padding-bottom: var(--space-4);
  }
}

/* Settings Content */
.settings-content {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  min-height: 400px;
}

@media (max-width: var(--breakpoint-lg)) {
  .settings-content {
    padding: var(--space-6);
  }
}

/* Section Header */
.section-header {
  margin-bottom: var(--space-8);
}

.section-header h3 {
  font-family: var(--font-family-serif);
  font-size: var(--font-size-2xl);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-2) 0;
}

.section-description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin: 0;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-group label {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="number"],
.form-group input[type="password"],
.form-group select {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
  transition: border-color var(--duration-normal) var(--ease-out);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-brand-primary);
}

.form-group input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-hint {
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
}

/* Profile Card */
.profile-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.avatar-display {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.avatar-img {
  width: var(--size-avatar-2xl);
  height: var(--size-avatar-2xl);
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 3px solid var(--color-border);
}

/* Theme Options */
.theme-options,
.voice-options {
  display: flex;
  gap: var(--space-4);
}

.theme-option,
.voice-option {
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
}

.theme-option:hover,
.voice-option:hover {
  border-color: var(--color-brand-primary);
}

.theme-option.selected,
.voice-option.selected {
  border-color: var(--color-brand-primary);
  background: var(--color-bg-hover);
}

.theme-option input,
.voice-option input {
  display: none;
}

.theme-preview {
  width: var(--space-10);
  height: var(--space-10);
  border-radius: var(--radius-md);
}

.theme-preview.dark {
  background: var(--color-bg-secondary);
}

.theme-preview.light {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
}

.theme-name,
.voice-name {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.voice-icon {
  font-size: var(--font-size-xl);
}

/* Range Slider */
input[type="range"] {
  width: 100%;
  height: 6px;
  border-radius: var(--radius-sm);
  background: var(--color-border);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  background: var(--color-brand-primary);
  cursor: pointer;
}

.range-value {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
}

/* Toggle Switch */
.toggle-group {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3) 0;
}

.toggle-switch {
  position: relative;
  width: 50px;
  height: 26px;
}

.toggle-switch input {
  display: none;
}

.toggle-slider {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-border);
  border-radius: 13px;
  cursor: pointer;
  transition: background var(--duration-slow) var(--ease-out);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background: white;
  border-radius: var(--radius-full);
  transition: transform var(--duration-slow) var(--ease-out);
}

.toggle-switch input:checked + .toggle-slider {
  background: var(--color-brand-primary);
}

.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(24px);
}

/* Buttons */
.btn {
  padding: var(--space-3) var(--space-6);
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
}

.btn-primary {
  background: var(--color-brand-primary);
  color: white;
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-secondary {
  background: var(--color-bg-hover);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

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

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

.btn-danger:hover {
  opacity: 0.9;
}

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

/* Privacy Section */
.privacy-section,
.storage-section,
.about-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.privacy-item,
.storage-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4);
  background: var(--color-bg-primary);
  border-radius: var(--radius-md);
  gap: var(--space-4);
}

@media (max-width: var(--breakpoint-lg)) {
  .privacy-item,
  .storage-item {
    flex-direction: column;
    align-items: flex-start;
  }
}

.privacy-info,
.storage-info {
  flex: 1;
}

.privacy-info h4,
.storage-info h4 {
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-1) 0;
}

.privacy-info p,
.storage-info p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

.storage-size,
.sync-status,
.pending-count {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

/* About Section */
.about-item {
  padding: var(--space-4);
  background: var(--color-bg-primary);
  border-radius: var(--radius-md);
}

.about-item h4 {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-1) 0;
}

.about-item p {
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  margin: 0;
}

.about-links {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.about-link {
  color: var(--color-brand-primary);
  text-decoration: none;
  font-size: var(--font-size-sm);
}

.about-link:hover {
  text-decoration: underline;
}

/* Account Actions */
.account-actions {
  margin-top: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}

.account-actions h4 {
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-4) 0;
}

.account-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.danger-zone {
  margin-top: var(--space-6);
  padding: var(--space-4);
  background: var(--color-danger-subtle);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-md);
}

.danger-zone h4 {
  color: var(--color-danger);
  font-size: var(--font-size-sm);
  margin: 0 0 var(--space-3) 0;
}

/* ============================================================
 * AUTHENTICATION STYLES
 * Login, Signup, and Settings screens
 * ============================================================ */

/* Auth Container - Full Viewport */
#authContainer {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  z-index: var(--z-index-modal-backdrop);
  overflow-y: auto;
}

/* Auth Screen */
.auth-screen {
  width: 100%;
  max-width: 400px;
  padding: var(--space-8);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}

/* Auth Header */
.auth-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.auth-header h1 {
  font-family: var(--font-family-serif);
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

.auth-header p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* Auth Form */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* Auth Field */
.auth-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.auth-field label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.auth-field input {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
  transition: border-color var(--duration-normal) var(--ease-out);
}

.auth-field input:focus {
  outline: none;
  border-color: var(--color-brand-primary);
}

.auth-field input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.auth-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

/* Auth Button */
.auth-btn {
  padding: var(--space-3) var(--space-6);
  border: none;
  border-radius: var(--radius-md);
  background: var(--color-brand-primary);
  color: white;
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: background var(--duration-normal) var(--ease-out), transform var(--duration-fast) var(--ease-out);
}

.auth-btn:hover:not(:disabled) {
  background: var(--color-brand-hover);
}

.auth-btn:active:not(:disabled) {
  transform: scale(0.98);
}

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

/* Google Button - Premium Design */
.google-btn {
  background: white;
  color: #1a1a1a;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  height: var(--size-button-lg);
  border: 1px solid #d1d5db;
  border-radius: var(--radius-xl);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  font-family: var(--font-family-sans);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  box-shadow: var(--shadow-xs);
  position: relative;
  overflow: hidden;
}

.google-btn-content {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.google-btn svg {
  flex-shrink: 0;
}

/* Hover State */
.google-btn:hover:not(:disabled) {
  background: var(--color-bg-hover);
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

/* Active/Pressed State */
.google-btn:active:not(:disabled) {
  background: var(--color-bg-active);
  border-color: var(--color-border-focus);
  transform: translateY(0) scale(0.98);
  box-shadow: var(--shadow-xs);
}

/* Focused State */
.google-btn:focus-visible {
  outline: 2px solid #4285F4;
  outline-offset: 2px;
  border-color: #4285F4;
}

/* Disabled State */
.google-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  background: var(--color-bg-disabled);
  border-color: var(--color-border-disabled);
}

.google-btn:disabled .google-btn-content {
  opacity: 0.7;
}

/* Loading State */
.google-btn.loading {
  pointer-events: none;
}

.google-btn.loading .google-btn-content {
  opacity: 0;
  visibility: hidden;
}

.google-btn.loading .btn-spinner {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 1;
  visibility: visible;
}

.google-btn .btn-spinner {
  display: none;
  width: var(--size-icon-lg);
  height: var(--size-icon-lg);
  border: 2px solid rgba(0, 0, 0, 0.1);
  border-top-color: #4285F4;
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

/* Auth Divider */
.auth-divider {
  display: flex;
  align-items: center;
  margin: var(--space-6) 0;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.auth-divider span {
  padding: 0 var(--space-4);
}

/* Auth Links */
.auth-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-6);
  font-size: var(--font-size-sm);
}

.auth-links a {
  color: var(--color-brand-primary);
  text-decoration: none;
  transition: color var(--duration-normal) var(--ease-out);
}

.auth-links a:hover {
  color: var(--color-brand-hover);
}

.auth-link-divider {
  color: var(--color-text-secondary);
}

/* Auth Error */
.auth-error {
  padding: var(--space-3) var(--space-4);
  background: var(--color-danger-subtle);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-md);
  color: var(--color-danger);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-4);
}

/* Auth Success */
.auth-success {
  padding: var(--space-3) var(--space-4);
  background: var(--color-success-subtle);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: var(--radius-md);
  color: var(--color-success);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-4);
}

/* Field Error */
.field-error {
  display: none;
  color: var(--color-danger);
  font-size: var(--font-size-xs);
  margin-top: var(--space-1);
}

.field-error[style*="display: block"] {
  display: block !important;
}

.auth-field input[aria-invalid="true"] {
  border-color: var(--color-danger);
}

/* Password Input Wrapper */
.password-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.password-input-wrapper input {
  flex: 1;
  padding-right: var(--space-12);
}

.password-toggle {
  position: absolute;
  right: var(--space-3);
  background: none;
  border: none;
  padding: var(--space-1);
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: color var(--duration-normal) var(--ease-out);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.password-toggle:focus {
  outline: none;
  color: var(--color-brand-primary);
}

/* Checkbox Field */
.checkbox-field {
  flex-direction: row;
  align-items: center;
  gap: var(--space-3);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--color-brand-primary);
}

/* Password Strength Meter */
.password-strength-container {
  margin-top: var(--space-2);
}

.password-strength-meter {
  height: 4px;
  background: var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: var(--space-2);
}

.password-strength-meter .strength-bar {
  height: 100%;
  width: 0%;
  transition: width var(--duration-slow) var(--ease-out), background var(--duration-slow) var(--ease-out);
}

.password-strength-meter.weak .strength-bar {
  width: 20%;
  background: var(--color-danger);
}

.password-strength-meter.fair .strength-bar {
  width: 40%;
  background: var(--color-warning);
}

.password-strength-meter.good .strength-bar {
  width: 60%;
  background: var(--color-info);
}

.password-strength-meter.strong .strength-bar {
  width: 80%;
  background: var(--color-success);
}

.password-strength-meter.excellent .strength-bar {
  width: 100%;
  background: var(--color-info);
}

.strength-text {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

/* Password Checklist */
.password-checklist {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-3);
  padding: var(--space-3);
  background: var(--color-bg-primary);
  border-radius: var(--radius-sm);
}

.password-check {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  opacity: 0.6;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.password-check svg {
  flex-shrink: 0;
  color: var(--color-border);
  transition: color var(--duration-normal) var(--ease-out);
}

.password-check.passed {
  opacity: 1;
  color: var(--color-text-primary);
}

.password-check.passed svg {
  color: var(--color-success);
}

/* Button Spinner */
.btn-spinner {
  display: inline-block;
  width: var(--size-icon-md);
  height: var(--size-icon-md);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
  margin-left: var(--space-2);
}

/* Verification Info */
.verification-info {
  padding: var(--space-4);
  background: var(--color-bg-primary);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-6);
}

.verification-info p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin: var(--space-2) 0;
}

.verification-info p:first-child {
  margin-top: 0;
}

.verification-info p:last-child {
  margin-bottom: 0;
}

/* Resend Countdown */
.resend-countdown {
  text-align: center;
  margin-top: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.resend-countdown #countdownTimer {
  font-weight: var(--font-weight-semibold);
  color: var(--color-brand-primary);
}

/* Mobile Responsiveness */
@media (max-width: var(--breakpoint-sm)) {
  .auth-screen {
    padding: var(--space-6);
    max-width: 100%;
  }

  .auth-header h1 {
    font-size: var(--font-size-2xl);
  }

  .auth-btn {
    padding: var(--space-3) var(--space-5);
    font-size: var(--font-size-base);
  }

  .google-btn {
    height: var(--size-button-md);
    font-size: var(--font-size-sm);
  }

  .google-btn svg {
    width: var(--size-icon-md);
    height: var(--size-icon-md);
  }

  .password-checklist {
    padding: var(--space-2);
  }

  .password-check {
    font-size: var(--font-size-xs);
  }
}

/* Tablet Responsiveness */
@media (min-width: var(--breakpoint-sm)) and (max-width: var(--breakpoint-lg)) {
  .auth-screen {
    max-width: 450px;
    padding: var(--space-7);
  }

  .google-btn {
    height: var(--size-button-lg);
  }
}

/* Focus States for Accessibility */
.auth-field input:focus,
.auth-field input:focus-visible {
  outline: 2px solid var(--color-brand-primary);
  outline-offset: 2px;
}

.password-toggle:focus-visible {
  outline: 2px solid var(--color-brand-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.auth-btn:focus-visible {
  outline: 2px solid var(--color-brand-primary);
  outline-offset: 2px;
}

/* Loading State */
.auth-btn:disabled .btn-text {
  opacity: 0.8;
}

.auth-btn:disabled .btn-spinner {
  display: inline-block;
}

.auth-btn:not(:disabled) .btn-spinner {
  display: none;
}

/* ============================================================
 * SETTINGS SCREENS
 * ============================================================ */

/* Settings Layout */
.settings-layout {
  display: flex;
  gap: 2rem;
}

/* Settings Navigation */
.settings-nav {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-width: 200px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border: none;
  background: transparent;
  color: var(--fg-dim);
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.2s;
  text-align: left;
}

.nav-item:hover {
  background: var(--bg-secondary);
  color: var(--fg-primary);
}

.nav-item.active {
  background: var(--bg-secondary);
  color: var(--fg-primary);
  font-weight: 500;
}

.nav-icon {
  font-size: 1.25rem;
}

.nav-label {
  font-size: 0.9rem;
}

.settings-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.settings-header h2 {
  font-family: 'Fraunces', serif;
  font-size: 2rem;
  color: var(--fg-primary);
  margin: 0;
}

.close-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: color var(--duration-normal) var(--ease-out);
}

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

/* Settings Form */
.settings-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* Settings Field */
.settings-field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.settings-field label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--fg-secondary);
}

.settings-field input,
.settings-field select {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-primary);
  color: var(--fg-primary);
  font-size: 0.95rem;
  transition: border-color 0.2s;
}

.settings-field input:focus,
.settings-field select:focus {
  outline: none;
  border-color: var(--accent);
}

.settings-field input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.settings-hint {
  font-size: 0.75rem;
  color: var(--fg-dim);
}

/* Toggle Field */
.toggle-field {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
}

.toggle-field input[type="checkbox"] {
  width: 20px;
  height: 20px;
  cursor: pointer;
}

.secondary-btn {
  background: var(--bg-primary);
  color: var(--fg-primary);
  border: 1px solid var(--border);
}

.secondary-btn:hover:not(:disabled) {
  background: var(--bg-hover);
}

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

.danger-btn:hover:not(:disabled) {
  background: var(--color-danger-dark);
}

/* Settings Error/Success */
.settings-error,
.settings-success {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.settings-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ef4444;
}

.settings-success {
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #22c55e;
}

/* Profile Section */
.profile-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.avatar-display {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.avatar-img {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--border);
}

.avatar-placeholder {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  font-weight: 600;
  color: white;
  border: 3px solid var(--border);
}

.avatar-upload-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--fg-primary);
  font-size: 0.85rem;
  cursor: pointer;
  transition: background 0.2s;
}

.avatar-upload-btn:hover {
  background: var(--bg-hover);
}

/* Account Section */
.account-section {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.account-info {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--bg-primary);
  border-radius: 8px;
}

.account-info h3 {
  font-size: 1rem;
  color: var(--fg-primary);
  margin-bottom: 0.5rem;
}

.info-row {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
}

.info-row:last-child {
  border-bottom: none;
}

.info-row span:first-child {
  color: var(--fg-dim);
  font-size: 0.9rem;
}

.info-row span:last-child {
  color: var(--fg-primary);
  font-weight: 500;
  font-size: 0.9rem;
}

.status-badge {
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
}

.account-actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.account-actions h3 {
  font-size: 1rem;
  color: var(--fg-primary);
  margin-bottom: 0.5rem;
}

.account-actions button {
  width: 100%;
}

/* ============================================================
 * ADMIN DASHBOARD
 * ============================================================ */

#adminDashboard {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
}

.admin-section {
  width: 90%;
  max-width: 1200px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2rem;
  background: var(--bg-secondary);
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.admin-header h2 {
  font-family: 'Fraunces', serif;
  font-size: 1.5rem;
  color: var(--fg-primary);
}

/* Admin Navigation */
.admin-nav {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.admin-nav-btn {
  padding: 0.5rem 1rem;
  border: none;
  background: transparent;
  color: var(--fg-dim);
  font-size: 0.9rem;
  cursor: pointer;
  transition: color 0.2s;
}

.admin-nav-btn:hover {
  color: var(--fg-primary);
}

.admin-nav-btn.active {
  color: var(--accent);
  font-weight: 500;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  padding: 1.5rem;
  background: var(--bg-primary);
  border-radius: 8px;
  text-align: center;
}

.stat-value {
  font-size: 2rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--fg-dim);
}

/* Recent Sections */
.recent-sections {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.recent-card {
  background: var(--bg-primary);
  border-radius: 8px;
  padding: 1.5rem;
}

.recent-card h3 {
  font-size: 1rem;
  color: var(--fg-primary);
  margin-bottom: 1rem;
}

.recent-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.recent-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem;
  background: var(--bg-secondary);
  border-radius: 6px;
}

.recent-user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.recent-avatar,
.recent-avatar-placeholder {
  width: 32px;
  height: 32px;
  border-radius: 50%;
}

.recent-avatar {
  object-fit: cover;
}

.recent-avatar-placeholder {
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 600;
  color: white;
}

.recent-info {
  display: flex;
  flex-direction: column;
}

.recent-name {
  font-size: 0.9rem;
  color: var(--fg-primary);
  font-weight: 500;
}

.recent-email {
  font-size: 0.75rem;
  color: var(--fg-dim);
}

.recent-time {
  font-size: 0.75rem;
  color: var(--fg-dim);
}

/* Admin Controls */
.admin-controls {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.admin-search,
.admin-filter {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-primary);
  color: var(--fg-primary);
  font-size: 0.9rem;
}

/* Users Table */
.users-table-container {
  overflow-x: auto;
}

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

.users-table th,
.users-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.users-table th {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--fg-dim);
  background: var(--bg-primary);
}

.users-table td {
  font-size: 0.9rem;
  color: var(--fg-primary);
}

.user-cell {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.user-avatar,
.user-avatar-placeholder {
  width: 32px;
  height: 32px;
  border-radius: 50%;
}

.user-avatar {
  object-fit: cover;
}

.user-avatar-placeholder {
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: white;
}

.status-badge,
.role-badge {
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
}

.status-badge.active {
  background: rgba(34, 197, 94, 0.1);
  color: #22c55e;
}

.status-badge.disabled {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

.role-badge.user {
  background: rgba(59, 130, 246, 0.1);
  color: #3b82f6;
}

.role-badge.admin {
  background: rgba(168, 85, 247, 0.1);
  color: #a855f7;
}

.user-actions {
  display: flex;
  gap: 0.25rem;
}

.action-btn {
  padding: 0.25rem 0.5rem;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 1rem;
  transition: background 0.2s;
  border-radius: 4px;
}

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

/* Analytics Grid */
.analytics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.analytics-card {
  background: var(--bg-primary);
  border-radius: 8px;
  padding: 1.5rem;
}

.analytics-card h3 {
  font-size: 1rem;
  color: var(--fg-primary);
  margin-bottom: 1rem;
}

.analytics-controls {
  margin-bottom: 1.5rem;
}

.analytics-chart {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.chart-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.chart-label {
  flex: 1;
  font-size: 0.85rem;
  color: var(--fg-secondary);
}

.chart-bar-fill {
  height: 24px;
  background: var(--accent);
  border-radius: 4px;
  min-width: 4px;
  transition: width 0.3s;
}

.chart-value {
  font-size: 0.85rem;
  color: var(--fg-primary);
  font-weight: 500;
  min-width: 40px;
  text-align: right;
}

/* Admin Error */
.admin-error {
  text-align: center;
  padding: 3rem;
}

.admin-error h2 {
  color: #ef4444;
}

/* ============================================================
 * STREAK & PROGRESS STYLES
 * ============================================================ */

.streak-overview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.streak-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}

.streak-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.streak-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.streak-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--fg-primary);
  margin-bottom: 0.25rem;
}

.streak-label {
  font-size: 0.85rem;
  color: var(--fg-secondary);
  margin-bottom: 0.25rem;
}

.streak-unit {
  font-size: 0.75rem;
  color: var(--fg-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.streak-section {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.streak-section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.streak-section-header h4 {
  margin: 0;
  font-size: 1rem;
  color: var(--fg-primary);
}

.streak-stats {
  display: flex;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--fg-secondary);
  align-items: center;
}

.streak-calendar {
  margin-top: 1rem;
}

.calendar-header {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.25rem;
  margin-bottom: 0.5rem;
}

.calendar-day-name {
  text-align: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--fg-tertiary);
  padding: 0.25rem;
  text-transform: uppercase;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.25rem;
}

.calendar-day {
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  cursor: default;
  transition: all 0.2s;
  position: relative;
  min-height: 36px;
}

.calendar-day:hover {
  transform: scale(1.05);
  z-index: 1;
}

.calendar-day-number {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--fg-secondary);
}

.calendar-day-indicator {
  position: absolute;
  bottom: 4px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-brand-primary), var(--color-brand-secondary));
}

.calendar-day.active {
  background: color-mix(in srgb, var(--color-brand-primary) 10%, var(--bg-secondary));
  border-color: var(--color-brand-primary);
}

.calendar-day.active .calendar-day-number {
  color: var(--color-brand-primary);
  font-weight: 600;
}

.calendar-day.missed {
  background: color-mix(in srgb, #ef4444 8%, var(--bg-secondary));
  border-color: color-mix(in srgb, #ef4444 30%, var(--border));
}

.calendar-day.missed .calendar-day-number {
  color: #ef4444;
}

.calendar-day.pre-install {
  background: var(--bg-secondary);
  border-color: var(--border);
  opacity: 0.5;
}

.calendar-day.pre-install .calendar-day-number {
  color: var(--fg-tertiary);
}

.calendar-day.today {
  border: 2px solid var(--color-brand-secondary);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--color-brand-secondary) 20%, transparent);
}

.calendar-day.today.active {
  border-color: var(--color-brand-primary);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--color-brand-primary) 20%, transparent);
}

.streak-legend {
  display: flex;
  gap: 1.5rem;
  margin: 1.5rem 0;
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--fg-secondary);
}

.legend-color {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.legend-color.active {
  background: color-mix(in srgb, var(--color-brand-primary) 10%, var(--bg-secondary));
  border-color: var(--color-brand-primary);
}

.legend-color.missed {
  background: color-mix(in srgb, #ef4444 8%, var(--bg-secondary));
  border-color: color-mix(in srgb, #ef4444 30%, var(--border));
}

.legend-color.pre-install {
  background: var(--bg-secondary);
  border-color: var(--border);
  opacity: 0.5;
}

.legend-color.today {
  border: 2px solid var(--color-brand-secondary);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--color-brand-secondary) 20%, transparent);
}

.streak-info {
  background: color-mix(in srgb, var(--color-brand-primary) 5%, var(--bg-secondary));
  border-radius: 8px;
  padding: 1rem;
  font-size: 0.85rem;
  color: var(--fg-secondary);
  line-height: 1.5;
}

.streak-info strong {
  color: var(--fg-primary);
}

/* Responsive adjustments */
@media (max-width: 600px) {
  .streak-overview {
    grid-template-columns: 1fr;
  }
  
  .streak-section-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .streak-stats {
    flex-wrap: wrap;
  }
  
  .calendar-day {
    min-height: 32px;
  }
  
  .calendar-day-number {
    font-size: 0.75rem;
  }
  
  .streak-legend {
    gap: 1rem;
  }
}

.admin-error p {
  color: var(--fg-dim);
}

/* Loading */
.admin-loading,
.recent-list .admin-loading,
.analytics-chart .admin-loading {
  text-align: center;
  color: var(--fg-dim);
  font-size: 0.85rem;
  padding: 1rem;
}

/* No Data */
.no-data {
  text-align: center;
  color: var(--fg-dim);
  font-size: 0.85rem;
  padding: 1rem;
}

/* Keep settings navigation in a left sidebar at every viewport width. */
.settings-screen {
  max-width: none;
  margin: 0;
  padding: clamp(1.5rem, 3vw, 3rem);
}

.settings-layout {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
  align-items: start;
  gap: clamp(1rem, 3vw, 2rem);
  min-height: calc(100vh - 10rem);
}

.settings-nav {
  position: sticky;
  top: var(--space-8);
  flex-direction: column;
  min-width: 0;
  max-height: calc(100vh - var(--space-16));
  overflow-y: auto;
}

.settings-content {
  width: 100%;
  min-height: calc(100vh - 12rem);
}

@media (max-width: var(--breakpoint-lg)) {
  .settings-layout {
    grid-template-columns: minmax(180px, 220px) minmax(0, 1fr);
  }

  .settings-nav {
    position: sticky;
    top: var(--space-4);
    flex-direction: column;
    max-height: calc(100vh - var(--space-8));
    overflow-y: auto;
    overflow-x: hidden;
    padding-bottom: 0;
  }
}

@media (max-width: 480px) {
  .settings-screen {
    padding: var(--space-4);
  }

  .settings-layout {
    grid-template-columns: 116px minmax(0, 1fr);
    gap: var(--space-3);
  }

  .nav-item {
    gap: var(--space-2);
    padding: var(--space-3) var(--space-2);
  }

  .nav-icon {
    font-size: 1rem;
  }

  .nav-label {
    font-size: 0.75rem;
    overflow-wrap: anywhere;
  }
}