/* ==========================================================================
   Ask4diet Landing Page Styles
   Strictly compliant with Ask4diet Design System & WEB_GUIDELINES.md
   Values from generated/web/tokens.css
   ========================================================================== */

@import "./tokens.css";

/* Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: var(--ask4-type-body-l-size);
  line-height: var(--ask4-type-body-l-line-height);
  background-color: var(--ask4-surface-bg);
  color: var(--ask4-ink-primary);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color 0.25s ease, color 0.25s ease;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Tabular numbers for all quantitative data */
.tabular-nums {
  font-variant-numeric: var(--ask4-type-numeric-variant);
  font-feature-settings: 'tnum' 1;
}

/* Focus styles according to spec */
:focus-visible {
  outline: none;
  box-shadow: 0 0 0 var(--ask4-focus-ring-offset) var(--ask4-surface-bg),
              0 0 0 calc(var(--ask4-focus-ring-offset) + var(--ask4-focus-ring-width)) var(--ask4-focus-ring-color);
}

/* ==========================================================================
   Typography & Brand
   ========================================================================== */

.brand-wordmark {
  font-family: 'Archivo', system-ui, sans-serif;
  font-size: 1.35rem;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ask4-ink-primary);
  display: inline-flex;
  align-items: center;
}

.brand-wordmark-ask4 {
  font-variation-settings: 'wdth' 100, 'wght' 700;
  font-weight: 700;
}

.brand-wordmark-diet {
  font-variation-settings: 'wdth' 100, 'wght' 400;
  font-weight: 400;
}

.brand-monogram {
  font-family: 'Archivo', system-ui, sans-serif;
  font-variation-settings: 'wdth' 100, 'wght' 700;
  font-weight: 700;
  font-size: 1rem;
  line-height: 1;
  background-color: var(--ask4-ink-primary);
  color: var(--ask4-surface-bg);
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--ask4-radius-s);
  letter-spacing: -0.05em;
  flex-shrink: 0;
}

.brand-monogram-4 {
  margin-left: -0.07em;
  position: relative;
  top: 0.0105em;
}

.accent-text {
  color: var(--ask4-accent-text);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: var(--ask4-surface-bg);
  border-bottom: 1px solid var(--ask4-border-subtle);
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

/* Glass effect if supported */
@supports (backdrop-filter: blur(12px)) {
  .site-header {
    background-color: var(--ask4-surface-bg);
    opacity: 0.96;
    backdrop-filter: blur(12px);
  }
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  min-height: var(--ask4-touch-min);
}

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

/* Theme Toggle Button (A7) */
.theme-toggle-btn {
  width: var(--ask4-touch-min);
  height: var(--ask4-touch-min);
  border-radius: var(--ask4-radius-pill);
  border: 1px solid var(--ask4-border-subtle);
  background-color: var(--ask4-surface-default);
  color: var(--ask4-ink-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}

.theme-toggle-btn:hover {
  background-color: var(--ask4-surface-raised);
}

.theme-toggle-btn:active {
  transform: scale(0.96);
}

.theme-toggle-btn svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ==========================================================================
   Buttons (A1 PrimaryButton & A6 PillAction)
   ========================================================================== */

/* A6 PillAction */
.btn-pill {
  min-height: var(--ask4-touch-min);
  padding: 0 20px;
  border-radius: var(--ask4-radius-pill);
  font-size: var(--ask4-type-label-l-size);
  font-weight: var(--ask4-type-label-l-weight);
  line-height: 1;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--ask4-ink-primary);
  color: var(--ask4-surface-bg);
  border: none;
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.15s ease;
}

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

.btn-pill:active {
  transform: scale(0.98);
}

/* A1 PrimaryButton */
.btn-primary {
  min-height: 52px;
  padding: 0 28px;
  border-radius: var(--ask4-radius-pill);
  font-size: var(--ask4-type-label-l-size);
  font-weight: var(--ask4-type-label-l-weight);
  letter-spacing: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: var(--ask4-ink-primary);
  color: var(--ask4-surface-bg);
  border: none;
  cursor: pointer;
  white-space: nowrap;
  transition: opacity 0.2s ease, transform 0.15s ease, background-color 0.2s ease;
}

.btn-primary:hover:not(:disabled) {
  opacity: 0.92;
}

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

.btn-primary:disabled {
  background-color: var(--ask4-action-disabled-fill);
  color: var(--ask4-action-disabled-label);
  cursor: not-allowed;
  opacity: 1;
}

/* Spinner inside button */
.btn-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--ask4-state-indeterminate-track);
  border-top-color: var(--ask4-surface-bg);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

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

/* ==========================================================================
   Form Components
   ========================================================================== */

.waitlist-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
}

@media (min-width: 640px) {
  .form-row {
    flex-direction: row;
    align-items: center;
  }
}

.waitlist-input {
  flex: 1;
  min-height: 52px;
  padding: 0 20px;
  border-radius: var(--ask4-radius-pill);
  background-color: var(--ask4-surface-default);
  color: var(--ask4-ink-primary);
  border: 1px solid var(--ask4-border-subtle);
  font-size: var(--ask4-type-body-l-size);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.waitlist-input::placeholder {
  color: var(--ask4-ink-secondary);
  opacity: 0.8;
}

.waitlist-input:focus {
  border-color: var(--ask4-accent-fill);
  background-color: var(--ask4-surface-overlay);
}

.form-feedback {
  font-size: var(--ask4-type-label-m-size);
  line-height: var(--ask4-type-label-m-line-height);
  min-height: 20px;
  padding-left: 12px;
  transition: color 0.2s ease;
}

.form-feedback.success {
  color: var(--ask4-state-success);
}

.form-feedback.error {
  color: var(--ask4-state-error);
}

.form-microcopy {
  font-size: var(--ask4-type-label-m-size);
  color: var(--ask4-ink-secondary);
  margin-top: 6px;
}

/* ==========================================================================
   Layout Containers
   ========================================================================== */

.main-content {
  padding-top: 68px;
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 24px;
}

@media (min-width: 1024px) {
  .section-container {
    padding: 120px 24px;
  }
}

/* Eyebrow Badge */
.eyebrow-badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: var(--ask4-radius-pill);
  background-color: var(--ask4-surface-default);
  border: 1px solid var(--ask4-border-subtle);
  font-size: var(--ask4-type-overline-size);
  font-weight: var(--ask4-type-overline-weight);
  letter-spacing: var(--ask4-type-overline-tracking);
  text-transform: var(--ask4-type-overline-transform);
  line-height: var(--ask4-type-overline-line-height);
  color: var(--ask4-ink-secondary);
  margin-bottom: 24px;
}

.eyebrow-badge.highlight {
  background-color: rgba(18, 131, 110, 0.1);
  color: var(--ask4-accent-text);
  border-color: rgba(18, 131, 110, 0.25);
}

/* Section Headings */
.section-title {
  font-size: var(--ask4-type-display-l-size);
  font-weight: var(--ask4-type-display-l-weight);
  line-height: 1.15;
  letter-spacing: var(--ask4-type-display-l-tracking);
  margin-bottom: 20px;
  color: var(--ask4-ink-primary);
}

.section-lead {
  font-size: var(--ask4-type-body-l-size);
  line-height: 1.5;
  color: var(--ask4-ink-secondary);
  margin-bottom: 32px;
  max-width: 520px;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero-section {
  min-height: calc(100vh - 68px);
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
  width: 100%;
}

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 80px;
  }
}

.hero-h1 {
  font-size: clamp(2.5rem, 5vw, 4.25rem);
  font-weight: var(--ask4-type-display-xl-weight);
  line-height: 1.1;
  letter-spacing: var(--ask4-type-display-xl-tracking);
  margin-bottom: 24px;
  color: var(--ask4-ink-primary);
}

.hero-lead {
  font-size: 1.25rem;
  line-height: 1.45;
  color: var(--ask4-ink-secondary);
  margin-bottom: 36px;
  max-width: 520px;
}

/* Phone Mockup Frame */
.mockup-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.mockup-aura {
  position: absolute;
  width: 80%;
  height: 80%;
  border-radius: 50%;
  background: radial-gradient(circle, var(--ask4-accent-fill) 0%, transparent 70%);
  opacity: 0.12;
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
  transition: opacity 0.3s ease;
}

.mockup-frame {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 320px;
  border-radius: 40px;
  overflow: hidden;
  box-shadow: 0 25px 60px -15px rgba(14, 14, 16, 0.25), 0 0 40px -10px rgba(18, 131, 110, 0.15);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

@media (min-width: 1024px) {
  .mockup-frame {
    max-width: 360px;
  }
}

.mockup-img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 40px;
}

/* Dark/Light image switching */
.mockup-img-dark {
  display: block;
}
.mockup-img-light {
  display: none;
}

:root[data-theme="light"] .mockup-img-dark {
  display: none;
}
:root[data-theme="light"] .mockup-img-light {
  display: block;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .mockup-img-dark {
    display: none;
  }
  :root:not([data-theme="dark"]) .mockup-img-light {
    display: block;
  }
}

/* ==========================================================================
   Split Feature Sections (MATADOR & Coach)
   ========================================================================== */

.split-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}

@media (min-width: 1024px) {
  .split-grid {
    grid-template-columns: 1fr 1fr;
    gap: 80px;
  }
  
  .split-grid.reverse .split-content {
    order: 1;
  }
  .split-grid.reverse .split-mockup {
    order: 2;
  }
}

/* Rhythm Badges for MATADOR */
.rhythm-badge-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.rhythm-badge {
  padding: 12px 18px;
  border-radius: var(--ask4-radius-m);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.rhythm-badge-sprint {
  background-color: var(--ask4-surface-raised);
  border: 1px solid var(--ask4-border-subtle);
}

.rhythm-badge-rest {
  background-color: transparent;
  border: 1px solid var(--ask4-accent-fill);
}

.rhythm-badge-label {
  font-size: var(--ask4-type-overline-size);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ask4-ink-secondary);
}

.rhythm-badge-sprint .rhythm-badge-label {
  color: var(--ask4-accent-text);
}

.rhythm-badge-value {
  font-size: var(--ask4-type-title-m-size);
  font-weight: var(--ask4-type-title-m-weight);
  color: var(--ask4-ink-primary);
}

/* Feature Pills for AI Coach */
.feature-pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.feature-pill {
  padding: 8px 16px;
  background-color: var(--ask4-surface-default);
  border: 1px solid var(--ask4-border-subtle);
  border-radius: var(--ask4-radius-pill);
  font-size: var(--ask4-type-label-m-size);
  color: var(--ask4-ink-primary);
}

/* ==========================================================================
   Feature Cards Grid (Built for real results)
   ========================================================================== */

.feature-grid-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 60px;
}

.cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .cards-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  background-color: var(--ask4-surface-default);
  border: 1px solid var(--ask4-border-subtle);
  border-radius: var(--ask4-radius-l);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--ask4-border-strong);
  box-shadow: 0 12px 30px -10px rgba(14, 14, 16, 0.1);
}

.card-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--ask4-radius-m);
  background-color: var(--ask4-surface-raised);
  border: 1px solid var(--ask4-border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ask4-accent-text);
  margin-bottom: 24px;
}

.card-icon-box svg {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.card-title {
  font-size: var(--ask4-type-title-m-size);
  font-weight: var(--ask4-type-title-m-weight);
  letter-spacing: var(--ask4-type-title-m-tracking);
  color: var(--ask4-ink-primary);
  margin-bottom: 12px;
}

.card-desc {
  font-size: var(--ask4-type-body-m-size);
  line-height: 1.5;
  color: var(--ask4-ink-secondary);
}

/* ==========================================================================
   Bottom CTA Section
   ========================================================================== */

.cta-box {
  background-color: var(--ask4-surface-raised);
  border: 1px solid var(--ask4-border-subtle);
  border-radius: var(--ask4-radius-l);
  padding: 60px 24px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .cta-box {
    padding: 80px 48px;
  }
}

.cta-h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: var(--ask4-type-display-l-weight);
  letter-spacing: var(--ask4-type-display-l-tracking);
  line-height: 1.15;
  margin-bottom: 18px;
  color: var(--ask4-ink-primary);
}

.cta-lead {
  font-size: 1.125rem;
  line-height: 1.5;
  color: var(--ask4-ink-secondary);
  margin: 0 auto 36px;
  max-width: 540px;
}

.cta-form-wrapper {
  max-width: 460px;
  margin: 0 auto;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  border-top: 1px solid var(--ask4-border-subtle);
  padding: 40px 24px;
  background-color: var(--ask4-surface-bg);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-container {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-meta {
  font-size: var(--ask4-type-label-m-size);
  color: var(--ask4-ink-secondary);
}