html[data-template="classic"] {
  --theme-hero: linear-gradient(135deg, rgba(79, 70, 229, 0.95), rgba(129, 140, 248, 0.9));
  --theme-surface: rgba(255, 255, 255, 0.9);
  --theme-shadow: rgba(79, 70, 229, 0.18);
  --theme-pattern: radial-gradient(circle at 20% 20%, rgba(99, 102, 241, 0.18), transparent 28%),
    radial-gradient(circle at 80% 15%, rgba(245, 158, 11, 0.18), transparent 24%);
}

html[data-template="magic-kingdom"] {
  --color-primary: #755700;
  --color-primary-light: #fdc003;
  --color-primary-dark: #5a4400;
  --color-primary-subtle: #fff4bf;
  --color-secondary: #00618f;
  --color-secondary-light: #1c8fc8;
  --color-accent: #b41924;
  --color-accent-light: #e95d67;
  --color-success: #148f61;
  --color-success-subtle: #e8fff4;
  --color-bg: #e6ffc5;
  --color-bg-secondary: #f7ffe9;
  --color-bg-tertiary: #d2ff9d;
  --color-text: #1d3500;
  --color-text-secondary: #48611f;
  --color-border: rgba(29, 53, 0, 0.12);
  --theme-hero: linear-gradient(135deg, rgba(117, 87, 0, 0.96), rgba(0, 97, 143, 0.92));
  --theme-surface: rgba(255, 255, 255, 0.86);
  --theme-shadow: rgba(29, 53, 0, 0.16);
  --theme-pattern: radial-gradient(circle at 12% 18%, rgba(253, 192, 3, 0.25), transparent 22%),
    radial-gradient(circle at 84% 12%, rgba(180, 25, 36, 0.24), transparent 20%),
    radial-gradient(circle at 75% 72%, rgba(0, 97, 143, 0.14), transparent 26%);
}

html[data-template="strawberry-kingdom"] {
  --color-primary: #a7295a;
  --color-primary-light: #ff709f;
  --color-primary-dark: #7a1943;
  --color-primary-subtle: #fff0f5;
  --color-secondary: #fec1d6;
  --color-secondary-light: #ffd9e5;
  --color-accent: #ff8b66;
  --color-accent-light: #ffc2a8;
  --color-success: #2aa775;
  --color-success-subtle: #effdf5;
  --color-bg: #f7f6f3;
  --color-bg-secondary: #ffffff;
  --color-bg-tertiary: #f1f1ee;
  --color-text: #2e2f2d;
  --color-text-secondary: #5b5c5a;
  --color-border: rgba(91, 92, 90, 0.12);
  --theme-hero: linear-gradient(135deg, rgba(167, 41, 90, 0.94), rgba(255, 112, 159, 0.88));
  --theme-surface: rgba(255, 255, 255, 0.92);
  --theme-shadow: rgba(167, 41, 90, 0.15);
  --theme-pattern: radial-gradient(circle at 20% 20%, rgba(255, 112, 159, 0.2), transparent 25%),
    radial-gradient(circle at 82% 12%, rgba(254, 193, 214, 0.32), transparent 20%),
    radial-gradient(circle at 75% 78%, rgba(255, 139, 102, 0.12), transparent 24%);
}

html[data-template="vibrant-enterprise"] {
  --color-primary: #0052d0;
  --color-primary-light: #799dff;
  --color-primary-dark: #003b95;
  --color-primary-subtle: #edf4ff;
  --color-secondary: #ff8a00;
  --color-secondary-light: #ffbd66;
  --color-accent: #54c950;
  --color-accent-light: #b8f388;
  --color-success: #18a957;
  --color-success-subtle: #effcf5;
  --color-bg: #f5f6f7;
  --color-bg-secondary: #ffffff;
  --color-bg-tertiary: #eff1f2;
  --color-text: #2c2f30;
  --color-text-secondary: #5f676d;
  --color-border: rgba(44, 47, 48, 0.12);
  --theme-hero: linear-gradient(135deg, rgba(0, 82, 208, 0.94), rgba(84, 201, 80, 0.88));
  --theme-surface: rgba(255, 255, 255, 0.92);
  --theme-shadow: rgba(0, 82, 208, 0.16);
  --theme-pattern: radial-gradient(circle at 15% 15%, rgba(0, 82, 208, 0.18), transparent 23%),
    radial-gradient(circle at 85% 12%, rgba(255, 138, 0, 0.22), transparent 18%),
    radial-gradient(circle at 72% 78%, rgba(84, 201, 80, 0.2), transparent 24%);
}

html[data-font-size="small"] {
  font-size: 14px;
}

html[data-font-size="medium"] {
  font-size: 16px;
}

html[data-font-size="large"] {
  font-size: 18px;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: var(--theme-pattern);
  pointer-events: none;
  z-index: -1;
}

.hero-banner,
.welcome-container,
.profile-header-card,
.stats-bar .stat-card,
.topic-card,
.lesson-card,
.exercise-card,
.modal-content,
.continue-card {
  box-shadow: 0 20px 45px var(--theme-shadow);
}

.hero-banner,
.welcome-logo .logo-icon,
.profile-tier-badge,
.btn-primary,
.btn-primary.btn-glow {
  background-image: var(--theme-hero);
}

.welcome-action-row,
.welcome-secondary-actions {
  display: grid;
  gap: 0.75rem;
  margin-top: 0.9rem;
}

.welcome-secondary-actions {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.btn-soft,
.btn-outline-soft {
  border-radius: var(--radius-xl);
  font-family: inherit;
  font-weight: var(--font-weight-semibold);
  padding: 0.9rem 1rem;
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: transform var(--duration-fast), box-shadow var(--duration-fast), background var(--duration-fast);
}

.btn-soft {
  background: var(--theme-surface);
  color: var(--color-text);
}

.btn-outline-soft {
  background: transparent;
  color: var(--color-primary);
  border-color: rgba(79, 70, 229, 0.2);
}

.btn-soft:hover,
.btn-outline-soft:hover,
.template-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px var(--theme-shadow);
}

.auth-caption,
.modal-hint-text,
.profile-muted,
.goal-help {
  color: var(--color-text-secondary);
  font-size: 0.92rem;
  line-height: 1.55;
}

.template-selector,
.goal-grid,
.account-summary-grid,
.register-grid {
  display: grid;
  gap: 1rem;
}

.template-selector {
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  margin-top: 1rem;
}

.template-card {
  border: 1px solid var(--color-border);
  background: var(--theme-surface);
  border-radius: 1.25rem;
  padding: 1rem;
  cursor: pointer;
  width: 100%;
  text-align: left;
  font-family: inherit;
  transition: transform var(--duration-fast), box-shadow var(--duration-fast), border-color var(--duration-fast);
}

.template-card.active {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.14);
}

.template-preview {
  height: 88px;
  border-radius: 1rem;
  margin-bottom: 0.8rem;
  position: relative;
  overflow: hidden;
}

.template-preview::before,
.template-preview::after {
  content: '';
  position: absolute;
  border-radius: 999px;
}

.template-preview::before {
  inset: 14px auto auto 14px;
  width: 76px;
  height: 22px;
  background: rgba(255, 255, 255, 0.7);
}

.template-preview::after {
  right: 16px;
  bottom: 14px;
  width: 54px;
  height: 54px;
  background: rgba(255, 255, 255, 0.25);
}

.template-card h4 {
  font-size: 0.98rem;
  margin-bottom: 0.25rem;
}

.template-card p {
  color: var(--color-text-secondary);
  font-size: 0.82rem;
  line-height: 1.45;
}

.template-preview.classic { background: linear-gradient(135deg, #4f46e5, #a78bfa); }
.template-preview.magic-kingdom { background: linear-gradient(135deg, #755700, #00618f); }
.template-preview.strawberry-kingdom { background: linear-gradient(135deg, #a7295a, #ff709f); }
.template-preview.vibrant-enterprise { background: linear-gradient(135deg, #0052d0, #54c950); }

.account-summary-grid,
.goal-grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  margin-top: 1rem;
}

.account-summary-card,
.goal-card,
.profile-panel {
  background: var(--theme-surface);
  border: 1px solid var(--color-border);
  border-radius: 1.25rem;
  padding: 1rem 1.1rem;
}

.profile-panel h3 {
  margin-bottom: 0.45rem;
}

.account-summary-card strong,
.goal-card strong {
  display: block;
  font-size: 1.1rem;
  margin-top: 0.3rem;
}

.profile-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.8rem;
}

.profile-chip {
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  background: var(--color-primary-subtle);
  color: var(--color-primary-dark);
  font-weight: 600;
  font-size: 0.82rem;
}

.profile-chip.warn {
  background: rgba(245, 158, 11, 0.16);
  color: #92400e;
}

.profile-chip.success {
  background: var(--color-success-subtle);
  color: var(--color-success);
}

.profile-edit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.9rem;
  margin-top: 1rem;
}

.profile-edit-grid .form-group,
.register-grid .form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.profile-edit-grid input,
.register-grid input,
.profile-edit-grid select,
.register-grid select {
  width: 100%;
  border-radius: 0.95rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
  color: var(--color-text);
  font-family: inherit;
  padding: 0.9rem 0.95rem;
}

.goal-progress {
  margin-top: 0.75rem;
  height: 10px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.22);
  overflow: hidden;
}

.goal-progress span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--theme-hero);
}

.inline-alert {
  background: rgba(245, 158, 11, 0.12);
  color: #92400e;
  border-radius: 1rem;
  padding: 0.85rem 1rem;
  margin-top: 0.9rem;
  line-height: 1.5;
}

.google-disabled-note {
  margin-top: 0.75rem;
  color: var(--color-text-secondary);
  font-size: 0.88rem;
  text-align: center;
}

@media (max-width: 640px) {
  .welcome-secondary-actions {
    grid-template-columns: 1fr;
  }

  .template-selector,
  .account-summary-grid,
  .goal-grid,
  .profile-edit-grid,
  .register-grid {
    grid-template-columns: 1fr;
  }
}