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

/* ── Material Design 3 — Dark Scheme Tokens ─────────────────── */
:root {
  /* Primary */
  --md-primary:              #AAC7FF;
  --md-on-primary:           #0A2F6C;
  --md-primary-container:    #284A97;
  --md-on-primary-container: #D8E3FF;

  /* Surface scale */
  --md-surface:                    #111318;
  --md-surface-container-lowest:   #0C0F14;
  --md-surface-container-low:      #191C21;
  --md-surface-container:          #1D2026;
  --md-surface-container-high:     #272A30;
  --md-surface-container-highest:  #32353B;

  /* On-surface */
  --md-on-surface:         #E1E2E8;
  --md-on-surface-variant: #C3C6CF;

  /* Outline */
  --md-outline:         #8D9199;
  --md-outline-variant: #43474E;

  /* State layers (alpha values, multiply against primary/on-surface) */
  --md-state-hover-opacity:   0.08;
  --md-state-focus-opacity:   0.12;
  --md-state-pressed-opacity: 0.12;

  /* M3 Shape scale */
  --shape-xs:   4px;
  --shape-sm:   8px;
  --shape-md:   12px;
  --shape-lg:   16px;
  --shape-xl:   28px;
  --shape-full: 9999px;

  /* Legacy aliases — keep markup working */
  --bg:          var(--md-surface);
  --bg-card:     var(--md-surface-container);
  --bg-card-alt: var(--md-surface-container-high);
  --border:      var(--md-outline-variant);
  --text:        var(--md-on-surface);
  --text-muted:  var(--md-on-surface-variant);
  --accent:      var(--md-primary);
  --accent-dark: #7BA5F5;

  --max-w: 1100px;
  --font:  "Roboto", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--md-surface);
  color: var(--md-on-surface);
  font-family: var(--font);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* M3 type scale helpers */
.md-display-small {
  font-size: 2.25rem; font-weight: 400; line-height: 1.2; letter-spacing: 0;
}
.md-headline-large {
  font-size: 2rem; font-weight: 400; line-height: 1.25; letter-spacing: 0;
}
.md-headline-medium {
  font-size: 1.75rem; font-weight: 400; line-height: 1.3; letter-spacing: 0;
}
.md-title-large {
  font-size: 1.375rem; font-weight: 500; line-height: 1.35; letter-spacing: 0;
}
.md-body-large  { font-size: 1rem;    font-weight: 400; line-height: 1.6; letter-spacing: 0.03em; }
.md-body-medium { font-size: 0.875rem; font-weight: 400; line-height: 1.6; letter-spacing: 0.025em; }
.md-label-large { font-size: 0.875rem; font-weight: 500; line-height: 1.4; letter-spacing: 0.006em; }

a { color: var(--md-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }

/* ── Layout ──────────────────────────────────────────────────── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── M3 Top App Bar ──────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  /* M3 surface-container — elevates slightly from surface */
  background: rgba(29, 32, 38, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--md-outline-variant);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 1rem;
}

/* M3 logo — Title Large weight */
.site-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--md-on-surface);
  font-size: 1.375rem;
  font-weight: 500;
  letter-spacing: 0;
  flex-shrink: 0;
}
.site-logo img { width: 32px; height: 32px; }
.site-logo:hover { text-decoration: none; color: var(--md-primary); }

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.1rem;
  flex-wrap: wrap;
}

/* M3 nav item — Text Button style with state layer */
.site-nav a {
  position: relative;
  color: var(--md-on-surface-variant);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.006em;
  padding: 0.4rem 0.75rem;
  border-radius: var(--shape-full);
  transition: color 0.2s;
  white-space: nowrap;
  overflow: hidden;
}
.site-nav a::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--md-on-surface);
  opacity: 0;
  transition: opacity 0.2s;
}
.site-nav a:hover { color: var(--md-on-surface); text-decoration: none; }
.site-nav a:hover::before { opacity: var(--md-state-hover-opacity); }

/* M3 Filled Tonal Button for nav CTA */
.site-nav .nav-cta {
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  font-weight: 500;
  padding: 0.5rem 1.25rem;
  border-radius: var(--shape-full);
}
.site-nav .nav-cta::before { background: var(--md-on-primary-container); }
.site-nav .nav-cta:hover { color: var(--md-on-primary-container); }

/* Language switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.1rem;
  margin-left: 0.5rem;
  padding-left: 0.75rem;
  border-left: 1px solid var(--md-outline-variant);
}
.lang-switcher a {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--md-on-surface-variant);
  padding: 0.25rem 0.5rem;
  border-radius: var(--shape-full);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: color 0.2s, background 0.2s;
}
.lang-switcher a:hover { color: var(--md-on-surface); text-decoration: none; background: rgba(255,255,255,0.08); }
.lang-switcher a.active {
  color: var(--md-primary);
  background: rgba(170,199,255,0.12);
}

/* ── Hero ────────────────────────────────────────────────────── */
.hero {
  padding: 5rem 0 4rem;
  text-align: center;
}

/* M3 Suggestion Chip — badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--md-surface-container-high);
  color: var(--md-primary);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--shape-full);
  padding: 0.35rem 1rem;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1.75rem;
}

/* M3 Display typography for hero h1 */
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: 1.25rem;
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
  color: var(--md-on-surface);
}

.hero-sub {
  font-size: 1.125rem;
  font-weight: 400;
  color: var(--md-on-surface-variant);
  max-width: 540px;
  margin: 0 auto 2.5rem;
  line-height: 1.75;
  letter-spacing: 0.03em;
}

/* M3 Suggestion Chips for feature pills */
.hero-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2.75rem;
}
.pill {
  background: var(--md-surface-container-low);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--shape-full);
  padding: 0.35rem 1rem;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.025em;
  color: var(--md-on-surface-variant);
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.pill:hover {
  background: var(--md-surface-container);
  border-color: var(--md-outline);
  color: var(--md-on-surface);
}

.hero-cta {
  display: inline-block;
  background: transparent;
  border: none;
  cursor: pointer;
}
.hero-cta img { height: 56px; transition: opacity 0.2s; }
.hero-cta:hover img { opacity: 0.85; }

/* ── Screenshots ─────────────────────────────────────────────── */
.screenshots-section {
  padding: 5rem 0;
}

/* M3 Label-style section label */
.section-label {
  text-align: center;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--md-primary);
  margin-bottom: 0.6rem;
}

/* M3 Headline section title */
.section-title {
  text-align: center;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 400;
  letter-spacing: 0;
  margin-bottom: 3rem;
  color: var(--md-on-surface);
}

.screenshots-row {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

.screenshot-card {
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* M3 shape-xl rounding, tonal elevation shadow */
.screenshot-card img {
  height: 400px;
  width: auto;
  border-radius: var(--shape-xl);
  box-shadow:
    0 1px 2px rgba(0,0,0,0.3),
    0 8px 24px rgba(0,0,0,0.45),
    0 0 0 1px rgba(255,255,255,0.05);
  transition: transform 0.25s cubic-bezier(0.2, 0, 0, 1),
              box-shadow 0.25s cubic-bezier(0.2, 0, 0, 1);
}
.screenshot-card img:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow:
    0 4px 8px rgba(0,0,0,0.3),
    0 16px 40px rgba(0,0,0,0.55),
    0 0 0 1px rgba(170,199,255,0.18);
}

/* ── Features ────────────────────────────────────────────────── */
.features-section {
  padding: 5rem 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
  margin-top: 3rem;
}

/* M3 Filled Card */
.feature-card {
  position: relative;
  background: var(--md-surface-container);
  border-radius: var(--shape-xl);
  padding: 1.75rem;
  overflow: hidden;
  transition: background 0.2s;
}
/* M3 state layer overlay */
.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--md-on-surface);
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}
.feature-card:hover { background: var(--md-surface-container-high); }
.feature-card:hover::before { opacity: 0.05; }

.feature-icon {
  font-size: 1.75rem;
  margin-bottom: 1rem;
  line-height: 1;
}

/* M3 Title Medium */
.feature-card h3 {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.015em;
  margin-bottom: 0.5rem;
  color: var(--md-on-surface);
}

/* M3 Body Medium */
.feature-card p {
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: 0.025em;
  color: var(--md-on-surface-variant);
  line-height: 1.65;
}

/* ── Tech Section ────────────────────────────────────────────── */
.tech-section {
  padding: 5rem 0;
  border-top: 1px solid var(--md-outline-variant);
}

.tech-inner {
  display: flex;
  align-items: center;
  gap: 3rem;
  flex-wrap: wrap;
}

.tech-text { flex: 1; min-width: 260px; }

/* M3 Headline Medium */
.tech-text h2 {
  font-size: 1.75rem;
  font-weight: 400;
  letter-spacing: 0;
  margin-bottom: 0.85rem;
  color: var(--md-on-surface);
}
.tech-text p {
  color: var(--md-on-surface-variant);
  line-height: 1.75;
  font-size: 0.9375rem;
  letter-spacing: 0.025em;
}
.tech-text a { color: var(--md-primary); }

/* ── Bottom CTA ──────────────────────────────────────────────── */
.bottom-cta {
  padding: 6rem 0;
  text-align: center;
  border-top: 1px solid var(--md-outline-variant);
}
.bottom-cta h2 {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 400;
  letter-spacing: 0;
  margin-bottom: 1rem;
  color: var(--md-on-surface);
}
.bottom-cta p {
  color: var(--md-on-surface-variant);
  margin-bottom: 2.25rem;
  font-size: 1rem;
  letter-spacing: 0.03em;
}

/* ── Footer ──────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--md-outline-variant);
  padding: 1.75rem 0;
  background: var(--md-surface-container-lowest);
}
.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-copy {
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.025em;
  color: var(--md-on-surface-variant);
}
.footer-links { display: flex; gap: 1.25rem; }
.footer-links a {
  font-size: 0.8125rem;
  letter-spacing: 0.025em;
  color: var(--md-on-surface-variant);
}
.footer-links a:hover { color: var(--md-on-surface); }

/* ── Article (Q&A / Privacy Policy) ─────────────────────────── */
.article-wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 4rem 1.5rem;
}
.article-header {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--md-outline-variant);
}
/* M3 Display Small */
.article-header h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.2;
  color: var(--md-on-surface);
}

/* M3 Title Large */
.article-body h2 {
  font-size: 1.375rem;
  font-weight: 500;
  letter-spacing: 0;
  margin: 2.5rem 0 0.75rem;
  color: var(--md-on-surface);
}
.article-body h2:first-child { margin-top: 0; }

.article-body p {
  color: var(--md-on-surface-variant);
  margin-bottom: 1rem;
  line-height: 1.75;
  letter-spacing: 0.025em;
}
.article-body p:last-child { margin-bottom: 0; }

.article-body ul, .article-body ol {
  color: var(--md-on-surface-variant);
  padding-left: 1.5rem;
  margin-bottom: 1rem;
  line-height: 1.75;
}
.article-body li { margin-bottom: 0.35rem; }
.article-body a { color: var(--md-primary); }
.article-body a:hover { text-decoration: underline; }
.article-body strong { color: var(--md-on-surface); font-weight: 500; }

.article-body code {
  background: var(--md-surface-container-high);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--shape-xs);
  padding: 0.1em 0.4em;
  font-size: 0.875em;
}

/* ── 404 ─────────────────────────────────────────────────────── */
.not-found {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 6rem 1.5rem;
}

.not-found-code {
  font-size: clamp(6rem, 20vw, 10rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--md-primary-container);
  margin-bottom: 1.5rem;
}

.not-found-title {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 400;
  color: var(--md-on-surface);
  margin-bottom: 1rem;
}

.not-found-sep {
  color: var(--md-outline);
  margin: 0 0.5rem;
}

.not-found-body {
  color: var(--md-on-surface-variant);
  font-size: 0.9375rem;
  letter-spacing: 0.025em;
  line-height: 1.75;
  margin-bottom: 2.5rem;
}

.not-found-home {
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.006em;
  padding: 0.65rem 1.75rem;
  border-radius: var(--shape-full);
  transition: opacity 0.2s;
}
.not-found-home:hover { opacity: 0.88; text-decoration: none; }

/* ── Divider ─────────────────────────────────────────────────── */
hr {
  border: none;
  border-top: 1px solid var(--md-outline-variant);
  margin: 3rem 0;
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 640px) {
  .hero { padding: 3rem 0 2.5rem; }
  .hero h1 { font-size: 1.875rem; }
  .screenshot-card img { height: 300px; }
  .site-nav { gap: 0; }
  .site-nav a { padding: 0.3rem 0.5rem; font-size: 0.8rem; }
  .tech-inner { gap: 1.5rem; }
  .site-footer .container { flex-direction: column; align-items: flex-start; }
}

/* ── Cookie Consent Banner — M3 Bottom Sheet style ───────────── */
.consent-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: var(--md-surface-container-high);
  border-top: 1px solid var(--md-outline-variant);
  transform: translateY(100%);
  transition: transform 0.35s cubic-bezier(0.2, 0, 0, 1);
}
.consent-banner--visible { transform: translateY(0); }

.consent-banner__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1.1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.consent-banner__text {
  flex: 1;
  min-width: 240px;
  font-size: 0.875rem;
  letter-spacing: 0.025em;
  line-height: 1.6;
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  align-items: baseline;
}
.consent-banner__text strong { color: var(--md-on-surface); font-weight: 500; white-space: nowrap; }
.consent-banner__text span  { color: var(--md-on-surface-variant); }

.consent-banner__actions { display: flex; gap: 0.6rem; flex-shrink: 0; }

/* M3 Filled Button (Accept) */
.consent-btn {
  border: none;
  border-radius: var(--shape-full);
  padding: 0.6rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.006em;
  cursor: pointer;
  font-family: var(--font);
  transition: box-shadow 0.2s, opacity 0.15s;
  position: relative;
  overflow: hidden;
}
.consent-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  transition: opacity 0.2s;
}

/* M3 Filled Button */
.consent-btn--primary {
  background: var(--md-primary);
  color: var(--md-on-primary);
}
.consent-btn--primary::before { background: var(--md-on-primary); }
.consent-btn--primary:hover::before { opacity: var(--md-state-hover-opacity); }

/* M3 Tonal Button */
.consent-btn--secondary {
  background: var(--md-surface-container-highest);
  color: var(--md-on-surface-variant);
}
.consent-btn--secondary::before { background: var(--md-on-surface); }
.consent-btn--secondary:hover { color: var(--md-on-surface); }
.consent-btn--secondary:hover::before { opacity: var(--md-state-hover-opacity); }

@media (max-width: 640px) {
  .consent-banner__inner { gap: 1rem; }
  .consent-banner__actions { width: 100%; justify-content: flex-end; }
}