/* WeekBoard marketing site — Cloudflare Pages */
:root {
  --bg: #070b14;
  --bg-elevated: #0e1524;
  --bg-card: rgba(18, 26, 44, 0.72);
  --border: rgba(148, 163, 184, 0.16);
  --text: #e8eef9;
  --muted: #94a3b8;
  --primary: #38bdf8;
  --primary-2: #818cf8;
  --accent: #22d3ee;
  --success: #34d399;
  --danger: #f87171;
  --radius: 16px;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "Cascadia Code", ui-monospace, monospace;
  --max: 1180px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(56, 189, 248, 0.18), transparent 55%),
    radial-gradient(900px 500px at 90% 0%, rgba(129, 140, 248, 0.16), transparent 50%),
    radial-gradient(800px 400px at 50% 100%, rgba(34, 211, 238, 0.08), transparent 45%),
    var(--bg);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

/* Screenshots: scale by width only — never crop vertically */
.media-img {
  width: 100%;
  max-width: 100%;
  height: auto !important;
  max-height: none !important;
  aspect-ratio: auto !important;
  object-fit: contain !important;
  object-position: center center;
  display: block;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(7, 11, 20, 0.72);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.35);
}

.brand span {
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.35rem 1rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
}

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

.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
  background: var(--bg-elevated);
}

.lang-toggle button {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.35rem 0.7rem;
  cursor: pointer;
}

.lang-toggle button.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #041018;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  border-radius: 999px;
  padding: 0.75rem 1.25rem;
  font-weight: 650;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none !important;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  color: #041018;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 10px 30px rgba(56, 189, 248, 0.25);
}

.btn-primary:hover {
  box-shadow: 0 14px 36px rgba(56, 189, 248, 0.35);
}

.btn-ghost {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--border);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
}

.btn-sm {
  padding: 0.45rem 0.9rem;
  font-size: 0.85rem;
}

/* Hero — stacked layout so screenshots are never vertically cropped */
.hero {
  padding: 3.5rem 0 2.5rem;
}

.hero-stack {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  align-items: stretch;
}

.hero-copy {
  max-width: 44rem;
  margin-inline: auto;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(56, 189, 248, 0.35);
  background: rgba(56, 189, 248, 0.08);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 650;
  margin-bottom: 1rem;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 4.5vw, 3.15rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--primary), #c4b5fd);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  color: var(--muted);
  font-size: 1.08rem;
  max-width: 38rem;
  margin: 0 auto 1.5rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  justify-content: center;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  color: var(--muted);
  font-size: 0.88rem;
  justify-content: center;
}

.hero-meta strong {
  color: var(--success);
  font-weight: 650;
}

.hero-visual {
  position: relative;
  width: min(100%, 1080px);
  margin-inline: auto;
  padding-bottom: 1.25rem;
}

.hero-frame {
  border-radius: 20px;
  border: 1px solid var(--border);
  background: transparent;
  box-shadow: var(--shadow);
  overflow: visible;
  line-height: 0;
}

.hero-frame .media-img {
  border-radius: 18px;
  background: transparent;
}

.hero-badge {
  position: absolute;
  bottom: 0.25rem;
  left: 1rem;
  right: 1rem;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.pill {
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  background: rgba(14, 21, 36, 0.92);
  border: 1px solid var(--border);
  color: var(--text);
  backdrop-filter: blur(8px);
}

/* Sections */
section {
  padding: 3.5rem 0;
}

.section-head {
  max-width: 40rem;
  margin-bottom: 2rem;
}

.section-head h2 {
  margin: 0 0 0.6rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.02em;
}

.section-head p {
  margin: 0;
  color: var(--muted);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  padding: 1.25rem 1.3rem;
  backdrop-filter: blur(10px);
}

.card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.card .icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  margin-bottom: 0.85rem;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(129, 140, 248, 0.18));
  border: 1px solid rgba(56, 189, 248, 0.25);
  font-size: 1.15rem;
}

/* Feature showcase — text + full-width image (scale width, keep aspect) */
#showcase {
  padding-top: 2rem;
}

.feature-row {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 3rem;
  padding: 1.35rem 1.35rem 1.5rem;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
}

.feature-row:last-child {
  margin-bottom: 0;
}

.feature-copy {
  max-width: 44rem;
}

.feature-copy .eyebrow {
  margin-bottom: 0.65rem;
}

.feature-copy h3 {
  margin: 0 0 0.5rem;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.feature-copy p {
  margin: 0 0 0.75rem;
  color: var(--muted);
}

.feature-copy ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

.feature-copy li {
  margin-bottom: 0.35rem;
  font-size: 0.94rem;
}

.shot {
  width: 100%;
  border-radius: 16px;
  border: 1px solid var(--border);
  overflow: visible;
  box-shadow: var(--shadow);
  background: transparent;
  line-height: 0;
}

.shot .media-img {
  border-radius: 15px;
  background: transparent;
}

/* Steps */
.steps {
  counter-reset: step;
  display: grid;
  gap: 0.85rem;
}

.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  align-items: start;
  padding: 1rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.step::before {
  counter-increment: step;
  content: counter(step);
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: #041018;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
}

.step h3 {
  margin: 0 0 0.25rem;
  font-size: 1rem;
}

.step p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

/* Download / CTA */
.cta-band {
  border-radius: 24px;
  border: 1px solid rgba(56, 189, 248, 0.25);
  background:
    linear-gradient(135deg, rgba(56, 189, 248, 0.12), rgba(129, 140, 248, 0.1)),
    var(--bg-elevated);
  padding: 2rem 1.75rem;
  text-align: center;
  box-shadow: var(--shadow);
}

.cta-band h2 {
  margin: 0 0 0.5rem;
  font-size: 1.65rem;
}

.cta-band p {
  margin: 0 auto 1.25rem;
  color: var(--muted);
  max-width: 34rem;
}

.dl-note {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.dl-note code {
  font-family: var(--mono);
  font-size: 0.8rem;
  background: rgba(0, 0, 0, 0.35);
  padding: 0.15rem 0.4rem;
  border-radius: 6px;
  color: var(--accent);
}

/* Security */
.security-list {
  display: grid;
  gap: 0.75rem;
}

.security-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
  padding: 1rem;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
}

.security-item .mark {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: rgba(52, 211, 153, 0.15);
  color: var(--success);
  font-size: 0.85rem;
  font-weight: 700;
}

.security-item h3 {
  margin: 0 0 0.2rem;
  font-size: 0.98rem;
}

.security-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

/* FAQ */
.faq details {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-card);
  padding: 0.9rem 1rem;
  margin-bottom: 0.65rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 650;
  list-style: none;
}

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

.faq details[open] summary {
  color: var(--primary);
  margin-bottom: 0.45rem;
}

.faq details p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0 2rem;
  margin-top: 1rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 1.5rem;
}

.footer h4 {
  margin: 0 0 0.65rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.footer a {
  display: block;
  color: var(--text);
  margin-bottom: 0.4rem;
  font-size: 0.92rem;
  text-decoration: none;
  opacity: 0.9;
}

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

.footer-bottom {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.85rem;
}

/* Legal pages */
.legal-page {
  padding: 2.5rem 0 4rem;
}

.legal-page h1 {
  margin: 0 0 0.35rem;
  font-size: 2rem;
  letter-spacing: -0.02em;
}

.legal-meta {
  color: var(--muted);
  margin: 0 0 2rem;
  font-size: 0.92rem;
}

.legal-page h2 {
  margin: 1.75rem 0 0.5rem;
  font-size: 1.15rem;
}

.legal-page p,
.legal-page li {
  color: var(--muted);
}

.legal-page ul {
  padding-left: 1.2rem;
}

.legal-nav {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

/*
 * Legal bilingual blocks:
 * - Always show English by default (never blank if JS fails)
 * - Switch to Vietnamese when data-lang="vi"
 */
.lang-block-en {
  display: block;
}
.lang-block-vi {
  display: none;
}
html[data-lang="vi"] .lang-block-en {
  display: none;
}
html[data-lang="vi"] .lang-block-vi {
  display: block;
}

/* Inline EN/VI swap on landing */
.i18n-vi {
  display: none !important;
}
.i18n-en {
  display: initial !important;
}
html[data-lang="vi"] .i18n-en {
  display: none !important;
}
html[data-lang="vi"] .i18n-vi {
  display: initial !important;
}
html[data-lang="vi"] span.i18n-vi,
html[data-lang="vi"] h1.i18n-vi,
html[data-lang="vi"] h2.i18n-vi,
html[data-lang="vi"] h3.i18n-vi,
html[data-lang="vi"] p.i18n-vi,
html[data-lang="vi"] li.i18n-vi,
html[data-lang="vi"] a.i18n-vi,
html[data-lang="vi"] summary.i18n-vi {
  display: revert !important;
}
html[data-lang="en"] span.i18n-en,
html[data-lang="en"] h1.i18n-en,
html[data-lang="en"] h2.i18n-en,
html[data-lang="en"] h3.i18n-en,
html[data-lang="en"] p.i18n-en,
html[data-lang="en"] li.i18n-en,
html[data-lang="en"] a.i18n-en,
html[data-lang="en"] summary.i18n-en {
  display: revert !important;
}

/* Responsive */
@media (max-width: 900px) {
  .grid-3,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }

  .nav-links a.hide-sm {
    display: none;
  }

  .hero {
    padding-top: 2.5rem;
  }

  .hero-copy {
    text-align: left;
  }

  .hero-cta,
  .hero-meta {
    justify-content: flex-start;
  }

  .hero-lead {
    margin-inline: 0;
  }
}