/* Application layer styles built on top of the design tokens */
:root {
  --fn-bg: var(--color-background-page);
  --fn-surface: var(--color-surface-base);
  --fn-surface-muted: var(--color-surface-muted);
  --fn-text: var(--color-text-primary);
  --fn-text-secondary: var(--color-text-secondary);
  --fn-text-muted: var(--color-text-muted);
  --fn-primary: var(--color-success-500);
  --fn-border: var(--color-border-strong);
  --fn-border-soft: var(--color-border-soft);
  --fn-overlay: var(--color-overlay-strong);
  --fn-radius-lg: var(--radius-lg);
  --fn-radius-xl: var(--radius-xl);
  --fn-shadow-lg: var(--shadow-lg);
  --fn-shadow-xl: var(--shadow-xl);

  --bs-body-bg: var(--fn-bg);
  --bs-body-color: var(--fn-text);
  --bs-heading-color: var(--color-text-primary);
  --bs-primary: var(--fn-primary);
  --bs-success: var(--color-success-500);
  --bs-border-color: var(--fn-border);
  --bs-card-bg: var(--fn-surface);
  --bs-card-border-color: transparent;
  --bs-body-font-family: var(--font-family-base);
}

[data-theme="dark"] {
  --fn-bg: var(--color-background-page);
  --fn-surface: var(--color-surface-base);
  --fn-surface-muted: var(--color-surface-muted);
  --fn-text: var(--color-text-primary);
  --fn-text-secondary: var(--color-text-secondary);
  --fn-text-muted: var(--color-text-muted);
  --fn-primary: var(--color-success-500);
  --fn-border: var(--color-border-strong);
  --fn-border-soft: var(--color-border-soft);
  --fn-overlay: var(--color-overlay-strong);
  --fn-shadow-lg: var(--shadow-lg);
  --fn-shadow-xl: var(--shadow-xl);
  --bs-body-bg: var(--fn-bg);
  --bs-body-color: var(--fn-text);
  --bs-heading-color: var(--color-text-primary);
  --bs-primary: var(--fn-primary);
  --bs-success: var(--color-success-500);
  --bs-border-color: var(--fn-border);
  --bs-card-bg: var(--fn-surface);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --fn-bg: var(--color-background-page);
    --fn-surface: var(--color-surface-base);
    --fn-surface-muted: var(--color-surface-muted);
    --fn-text: var(--color-text-primary);
    --fn-text-secondary: var(--color-text-secondary);
    --fn-text-muted: var(--color-text-muted);
    --fn-primary: var(--color-success-500);
    --fn-border: var(--color-border-strong);
    --fn-border-soft: var(--color-border-soft);
    --fn-overlay: var(--color-overlay-strong);
    --fn-shadow-lg: var(--shadow-lg);
    --fn-shadow-xl: var(--shadow-xl);
    --bs-body-bg: var(--fn-bg);
    --bs-body-color: var(--fn-text);
    --bs-heading-color: var(--color-text-primary);
    --bs-primary: var(--fn-primary);
    --bs-success: var(--color-success-500);
    --bs-border-color: var(--fn-border);
    --bs-card-bg: var(--fn-surface);
  }
}

body {
  background-color: var(--fn-bg);
  color: var(--fn-text);
}

a {
  color: var(--fn-primary);
  transition: color var(--transition-base);
}

a:hover,
a:focus {
  color: var(--color-success-600);
}

.offcanvas {
  background-color: var(--fn-bg);
  color: var(--fn-text);
}

.app-logo {
  width: var(--size-logo);
  height: var(--size-logo);
}

.header-actions .btn {
  white-space: nowrap;
}

.header-premium-link {
  color: rgba(255, 255, 255, 0.92);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  transition: color var(--transition-base), opacity var(--transition-base);
}

.header-premium-link:hover,
.header-premium-link:focus {
  color: #fff;
  opacity: 0.9;
}

.mobile-cta-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1035;
  background: var(--fn-surface);
  border-top: 1px solid var(--fn-border-soft);
  box-shadow: var(--shadow-lg);
  padding: var(--space-md) var(--space-lg);
}

.mobile-cta-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.mobile-cta-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  color: var(--fn-text);
}

.mobile-cta-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-size: var(--font-size-xs);
  letter-spacing: 0.08em;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  color: var(--fn-primary);
}

.mobile-cta-actions {
  display: flex;
  gap: var(--space-sm);
}

body.has-mobile-cta {
  padding-bottom: 6rem;
}

@media (min-width: 992px) {
  body.has-mobile-cta {
    padding-bottom: 0;
  }
}

[data-theme="dark"] .mobile-cta-bar {
  background: rgba(18, 18, 18, 0.96);
  border-top-color: rgba(255, 255, 255, 0.08);
}

.u-max-w-auth {
  max-width: var(--content-width-auth);
  margin-left: auto;
  margin-right: auto;
}

.modal-dialog.app-modal-compact {
  max-width: var(--content-width-dialog);
}

.modal-dialog.app-modal-wide {
  max-width: var(--content-width-dialog-wide);
}

.card {
  border: none;
  border-radius: var(--fn-radius-lg);
  background-color: var(--fn-surface);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-transform), box-shadow var(--transition-emphasis);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--fn-shadow-lg) !important;
}

[data-theme="dark"] .card {
  background-color: var(--fn-surface);
  border-color: var(--fn-border-soft);
  box-shadow: var(--shadow-md);
}

.btn-success {
  transition: background-color var(--transition-base), var(--transition-transform);
}

.btn-success:hover {
  background-color: var(--color-success-600);
  transform: translateY(-1px);
}

.ingredient-tag {
  transition: background-color var(--transition-base), transform var(--transition-base);
  cursor: pointer;
}

.ingredient-tag:hover {
  background-color: rgba(var(--color-success-500-rgb), 0.16) !important;
  transform: scale(1.05);
}

#photoPreview {
  max-height: 300px;
  object-fit: contain;
  transition: transform var(--transition-emphasis), box-shadow var(--transition-emphasis);
}

.upload-area {
  border: 2px dashed var(--fn-border);
  transition: border-color var(--transition-base), background-color var(--transition-base), transform var(--transition-base);
  cursor: pointer;
}

.upload-area:hover,
.upload-area.dragover {
  border-color: var(--fn-primary);
  background-color: rgba(var(--color-success-500-rgb), 0.08);
}

.spinner-border-sm {
  width: 1rem;
  height: 1rem;
}

.step-number {
  display: inline-block;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background-color: var(--fn-primary);
  color: var(--color-text-inverse);
  text-align: center;
  line-height: 1.75rem;
  margin-right: var(--space-sm);
  font-size: var(--font-size-sm);
}

.fade-in {
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

@media (max-width: 576px) {
  .container {
    padding-left: var(--space-sm);
    padding-right: var(--space-sm);
  }

  .card-body {
    padding: var(--space-md);
  }

  .input-group {
    width: 100%;
    flex-direction: column;
    gap: var(--space-xs);
  }

  .input-group .form-control {
    flex: 1 1 auto;
    min-width: 0;
  }

  .input-group .btn {
    border-radius: var(--radius-md);
    margin-top: var(--space-xs);
    width: 100%;
  }

  #addIngredientBtn {
    width: 100%;
  }

  #loginModal .modal-dialog,
  #signupModal .modal-dialog {
    max-width: 100%;
    margin: 0 var(--space-sm);
  }
}

.loading-overlay {
  position: fixed;
  inset: 0;
  background-color: var(--color-overlay-strong);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-emphasis), visibility var(--transition-emphasis);
}

.loading-overlay.active {
  opacity: 1;
  visibility: visible;
}

.loading-spinner {
  width: 3.125rem;
  height: 3.125rem;
  border: 0.3125rem solid rgba(243, 243, 243, 0.6);
  border-top-color: var(--fn-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

#statusBadge.plan-premium {
  background: var(--gradient-premium);
  color: var(--color-neutral-900);
}

.modal-content {
  border: none;
  border-radius: var(--radius-md);
  box-shadow: var(--fn-shadow-xl);
  background-color: var(--fn-surface);
}

[data-theme="dark"] .modal-content {
  background-color: var(--fn-surface);
}

[data-theme="dark"] .form-control,
[data-theme="dark"] .input-group-text {
  background-color: var(--fn-surface);
  color: var(--fn-text);
  border-color: rgba(255, 255, 255, 0.16);
}

[data-theme="dark"] .form-control:focus {
  background-color: var(--fn-surface);
  color: var(--fn-text);
  border-color: rgba(var(--color-success-500-rgb), 0.45);
  box-shadow: 0 0 0 0.25rem rgba(var(--color-success-500-rgb), 0.25);
}

/* Intro highlight */
.intro-block {
  background-color: rgba(var(--color-success-500-rgb), 0.08);
  border-left: 0.25rem solid var(--fn-primary);
  border-radius: var(--radius-sm);
  padding: var(--space-md);
}

/* Stepper */
.stepper {
  display: flex;
  justify-content: space-between;
  list-style: none;
  padding: 0;
  margin-bottom: var(--space-xl);
  gap: var(--space-lg);
}

.stepper .step {
  position: relative;
  flex: 1;
  text-align: center;
}

.stepper .step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 1rem;
  right: -50%;
  width: 100%;
  height: 2px;
  background-color: var(--fn-border-soft);
}

.step-badge {
  width: 2rem;
  height: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: var(--fn-primary);
  color: var(--color-text-inverse);
  font-weight: var(--font-weight-semibold);
}

.step-card {
  background-color: var(--fn-surface-muted);
  border: 1px solid var(--fn-border-soft);
  box-shadow: var(--shadow-sm);
}

.step-card i {
  font-size: 1.5rem;
  margin-right: var(--space-sm);
}

[data-theme="dark"] .step-card {
  background-color: var(--fn-surface);
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-md);
}

/* Hero */
.hero-section {
  position: relative;
  background: var(--gradient-brand-soft);
  border: 1px solid var(--fn-border-soft);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-xl), 5vw, calc(var(--space-xl) + 1.5rem));
  overflow: hidden;
}

.hero-grid {
  display: grid;
  gap: clamp(var(--space-xl), 4vw, var(--space-2xl));
  align-items: center;
}

@media (min-width: 992px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }
}

.hero-badge,
.how-it-works-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  background-color: rgba(var(--color-success-500-rgb), 0.14);
  color: var(--fn-primary);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-pill);
}

.hero-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: var(--space-sm);
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2.4vw, 1.3rem);
  color: var(--fn-text-muted);
  margin-bottom: var(--space-lg);
}

.hero-actions .btn {
  box-shadow: var(--fn-shadow-lg);
  transition: var(--transition-transform);
}

.hero-actions .btn.btn-outline-success {
  box-shadow: none;
}

.hero-actions .btn:hover {
  transform: translateY(-1px);
}

.hero-meta {
  gap: var(--space-sm);
}

.hero-meta i,
.hero-meta svg {
  color: var(--fn-primary);
  font-size: 1rem;
}

.hero-plan-reminder {
  color: var(--fn-text);
}

.hero-plan-card {
  background: rgba(var(--color-success-500-rgb), 0.08);
  border: 1px solid var(--fn-border-soft);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .hero-plan-card {
  background: rgba(var(--color-success-500-rgb), 0.18);
  border-color: rgba(255, 255, 255, 0.08);
}

.hero-plan-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: var(--space-2xs) var(--space-sm);
  border-radius: var(--radius-pill);
  background: rgba(var(--color-success-500-rgb), 0.16);
  color: var(--fn-primary);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero-plan-signup {
  color: var(--fn-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  text-decoration: none;
}

.hero-plan-signup:hover,
.hero-plan-signup:focus {
  color: var(--color-success-600);
  text-decoration: underline;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: -35% -10% auto;
  height: 75%;
  background: var(--gradient-hero-glow);
  z-index: 0;
}

.hero-visual-inner {
  position: relative;
  z-index: 1;
  background: var(--fn-surface);
  padding: clamp(var(--space-lg), 3vw, 2rem);
  border-radius: var(--radius-lg);
  box-shadow: var(--fn-shadow-xl);
  max-width: 28rem;
}

[data-theme="dark"] .hero-visual-inner {
  background: rgba(26, 26, 26, 0.92);
}

.hero-image {
  width: 100%;
  border-radius: var(--radius-md);
  display: block;
}

@media (max-width: 576px) {
  .hero-actions .btn {
    width: 100%;
  }

  .hero-meta {
    align-items: flex-start;
  }
}

/* How it works */
.how-it-works-card {
  background: var(--fn-surface);
  border: 1px solid var(--fn-border-soft);
  border-radius: var(--radius-xl);
  padding: clamp(1.75rem, 4vw, 2.5rem);
  box-shadow: var(--shadow-md);
}

[data-theme="dark"] .how-it-works-card {
  background: var(--fn-surface);
  box-shadow: var(--shadow-lg);
}

.how-it-works-stepper {
  flex-direction: column;
  gap: var(--space-lg);
  align-items: stretch;
}

.how-it-works-stepper .step {
  text-align: left;
  background: rgba(var(--color-success-500-rgb), 0.08);
  border: 1px solid var(--fn-border-soft);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}

[data-theme="dark"] .how-it-works-stepper .step {
  background: rgba(var(--color-success-500-rgb), 0.16);
}

.how-it-works-stepper .step:not(:last-child)::after {
  display: none;
}

.how-it-works-stepper .step p {
  margin-top: var(--space-sm);
}

@media (min-width: 992px) {
  .how-it-works-stepper {
    flex-direction: row;
    gap: 1.75rem;
  }

  .how-it-works-stepper .step {
    flex: 1;
  }
}

/* Highlight after hero CTA scroll */
.hero-scroll-highlight {
  animation: heroHighlight 1.6s ease-in-out;
}

@keyframes heroHighlight {
  0% {
    box-shadow: 0 0 0 0 rgba(var(--color-success-500-rgb), 0.4);
  }
  60% {
    box-shadow: 0 0 0 0.75rem rgba(var(--color-success-500-rgb), 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(var(--color-success-500-rgb), 0);
  }
}