/* YesLaku marketing site — design tokens copied verbatim from the app's own
   theme (lib/core/theme/app_theme.dart / app_colors.dart), not a separate
   "marketing" palette. */
:root {
  --color-primary: #0e7c66;
  --color-primary-dark: #0a5c4c;
  --color-primary-light: #e6f2ef;
  --color-bg: #f7f8f7;
  --color-surface: #ffffff;
  --color-text: #1a1d1c;
  --color-text-secondary: #5c6360;
  --color-border: #dce0de;
  --color-success: #1b873f;
  --color-warning: #b88217;
  --color-danger: #c02b2b;
  --color-info: #1d6fb8;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 20px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-xxl: 80px;
  --max-width: 1120px;
  --font-sans:
    -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Inter, Arial,
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--color-primary);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Skip link — accessibility */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-xs) var(--space-sm);
  z-index: 100;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus {
  left: 0;
}

/* Focus visibility */
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--color-info);
  outline-offset: 2px;
}

/* ---------------- Header / nav ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  max-width: var(--max-width);
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-weight: 800;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--color-text);
}

.brand img {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
}

.nav-links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.95rem;
}

.nav-links a:hover {
  color: var(--color-primary);
}

.nav-cta {
  background: var(--color-primary);
  color: #fff !important;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 700;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  font-size: 1.2rem;
}

@media (max-width: 800px) {
  .nav-toggle {
    display: block;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-sm) var(--space-md) var(--space-md);
  }
  .nav-links.open {
    display: flex;
  }
  .nav-cta {
    text-align: center;
  }
}

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-primary-dark);
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-secondary:hover {
  background: var(--color-primary-light);
}

/* ---------------- Hero ---------------- */
.hero {
  padding: var(--space-xxl) 0 var(--space-xl);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-xl);
  align-items: center;
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-benefit {
    justify-content: center;
  }
}

.eyebrow {
  color: var(--color-primary);
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.1rem);
  line-height: 1.15;
  margin: var(--space-xs) 0 var(--space-sm);
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  max-width: 46ch;
}

.hero-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-top: var(--space-md);
}

.hero-benefit {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: var(--space-sm);
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

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

.phone-frame {
  width: min(320px, 80vw);
  /* Fixed device aspect ratio — the frame's shape never depends on
     whatever a given screenshot's real proportions happen to be, so a
     screenshot with a lot of blank space in it (like the demo cart) can
     never read as "stretched". */
  aspect-ratio: 9 / 19.5;
  border-radius: 36px;
  border: 8px solid var(--color-text);
  overflow: hidden;
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.35);
  background: var(--color-text);
}

.phone-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

/* ---------------- Section shells ---------------- */
section {
  padding: var(--space-xl) 0;
}

.section-head {
  max-width: 640px;
  margin: 0 auto var(--space-lg);
  text-align: center;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: var(--space-xs);
}

.section-head p {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
}

.alt-bg {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

/* ---------------- Problem / Solution ---------------- */
.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

@media (max-width: 800px) {
  .problem-grid {
    grid-template-columns: 1fr;
  }
}

.problem-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.problem-card.solution {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
}

.problem-card h3 {
  margin-top: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ---------------- Feature grid ---------------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

@media (max-width: 900px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 600px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  text-decoration: none;
  color: inherit;
  display: block;
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease;
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 24px -12px rgba(0, 0, 0, 0.18);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: var(--space-sm);
}

.feature-card h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
}

.feature-card p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.feature-link {
  display: inline-block;
  margin-top: var(--space-xs);
  font-weight: 700;
  font-size: 0.9rem;
}

/* ---------------- How it works ---------------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  counter-reset: step;
}

@media (max-width: 900px) {
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 560px) {
  .steps {
    grid-template-columns: 1fr;
  }
}

.step {
  text-align: left;
}

.step-number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  margin-bottom: var(--space-xs);
}

.step h3 {
  margin: 0 0 4px;
  font-size: 1rem;
}
.step p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 0.92rem;
}

/* ---------------- Screenshots: coverflow carousel ---------------- */
.carousel {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
}

.carousel-track {
  position: relative;
  width: 100%;
  max-width: 640px;
  height: 420px;
  perspective: 1200px;
  touch-action: pan-y;
}

.carousel-card {
  --card-w: 190px;
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--card-w);
  aspect-ratio: 9 / 19.5;
  margin: 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: 0 24px 48px -24px rgba(0, 0, 0, 0.3);
  background: var(--color-surface);
  overflow: hidden;
  cursor: pointer;
  transition:
    transform 0.5s cubic-bezier(0.22, 0.61, 0.36, 1),
    opacity 0.5s ease;
  transform: translate(-50%, -50%) scale(0.6);
  opacity: 0;
  pointer-events: none;
}

.carousel-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

.carousel-card.is-active {
  transform: translate(-50%, -50%) scale(1);
  opacity: 1;
  z-index: 3;
  pointer-events: auto;
}

.carousel-card.is-prev {
  transform: translate(calc(-50% - 130px), -50%) scale(0.82) rotateY(10deg);
  opacity: 0.65;
  z-index: 2;
  pointer-events: auto;
}

.carousel-card.is-next {
  transform: translate(calc(-50% + 130px), -50%) scale(0.82) rotateY(-10deg);
  opacity: 0.65;
  z-index: 2;
  pointer-events: auto;
}

@media (max-width: 560px) {
  .carousel-track {
    height: 360px;
  }
  .carousel-card {
    --card-w: 160px;
  }
  .carousel-card.is-prev {
    transform: translate(calc(-50% - 100px), -50%) scale(0.8) rotateY(10deg);
  }
  .carousel-card.is-next {
    transform: translate(calc(-50% + 100px), -50%) scale(0.8) rotateY(-10deg);
  }
}

.carousel-arrow {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.carousel-arrow:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.carousel-caption {
  text-align: center;
  font-weight: 700;
  margin: var(--space-md) 0 var(--space-xs);
  min-height: 1.4em;
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: var(--space-sm);
}

.carousel-dots button {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: none;
  padding: 0;
  background: var(--color-border);
  cursor: pointer;
  transition:
    width 0.2s ease,
    background 0.2s ease;
}

.carousel-dots button[aria-selected='true'] {
  background: var(--color-primary);
  width: 22px;
  border-radius: 999px;
}

.screenshot-note {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  margin-top: var(--space-sm);
}

/* ---------------- Use cases ---------------- */
.usecase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}
@media (max-width: 700px) {
  .usecase-grid {
    grid-template-columns: 1fr;
  }
}
.usecase-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  background: var(--color-surface);
}
.usecase-card h3 {
  margin-top: 0;
}
.usecase-card a {
  font-weight: 700;
  font-size: 0.9rem;
}

/* ---------------- Guides ---------------- */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}
@media (max-width: 900px) {
  .guide-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 600px) {
  .guide-grid {
    grid-template-columns: 1fr;
  }
}
.guide-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  background: var(--color-surface);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.guide-card:hover {
  border-color: var(--color-primary);
}
.guide-card .tag {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.guide-card h3 {
  margin: 0;
  font-size: 1.05rem;
}
.guide-card p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 0.92rem;
}
.guide-card .read-more {
  margin-top: auto;
  font-weight: 700;
  font-size: 0.9rem;
}

/* ---------------- FAQ ---------------- */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-sm) 0;
}

.faq-item summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 1.02rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--color-primary);
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  content: '\2212';
}

.faq-item p {
  color: var(--color-text-secondary);
  margin: var(--space-xs) 0 0;
}

.faq-item a {
  font-weight: 700;
}

/* ---------------- Final CTA ---------------- */
.final-cta {
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  text-align: center;
  margin: 0 var(--space-md);
}

.final-cta h2 {
  margin-top: 0;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.final-cta p {
  opacity: 0.92;
  max-width: 50ch;
  margin: 0 auto var(--space-md);
}

.final-cta .btn-primary {
  background: #fff;
  color: var(--color-primary);
}
.final-cta .btn-primary:hover {
  background: var(--color-bg);
}

.final-cta .after-click {
  margin-top: var(--space-sm);
  font-size: 0.85rem;
  opacity: 0.85;
}

/* ---------------- Footer ---------------- */
footer.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) 0 var(--space-lg);
  margin-top: var(--space-xl);
  color: var(--color-text-secondary);
  font-size: 0.92rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-md);
}

@media (max-width: 800px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.footer-grid h4 {
  color: var(--color-text);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 var(--space-xs);
}

.footer-grid ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-grid li {
  margin-bottom: 6px;
}

.footer-grid a {
  color: var(--color-text-secondary);
  text-decoration: none;
}
.footer-grid a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

/* ---------------- Guide page layout ---------------- */
.guide-page {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md) var(--space-xxl);
}

.breadcrumbs {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}
.breadcrumbs a {
  color: var(--color-text-secondary);
  text-decoration: none;
}
.breadcrumbs a:hover {
  color: var(--color-primary);
}

.guide-page h1 {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  margin-bottom: var(--space-xs);
}

.guide-meta {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-bottom: var(--space-lg);
}

.guide-page h2 {
  margin-top: var(--space-lg);
}

.callout {
  background: var(--color-primary-light);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin: var(--space-md) 0;
}

.mistake-list li,
.tip-list li {
  margin-bottom: 8px;
}

.guide-cta {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  text-align: center;
  margin: var(--space-lg) 0;
}

.related-guides {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}
@media (max-width: 600px) {
  .related-guides {
    grid-template-columns: 1fr;
  }
}

/* ---------------- 404 ---------------- */
.error-page {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-xxl) var(--space-md);
}
.error-page h1 {
  font-size: 4rem;
  margin: 0;
  color: var(--color-primary);
}

/* ---------------- Utility ---------------- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}