/* Parsee marketing site — vanilla CSS, no build step.
   Light by default, auto dark via prefers-color-scheme. */

:root {
  /* Color tokens — light */
  --bg: #ffffff;
  --bg-alt: #fafafa;
  --text: #1d1d1f;
  --text-muted: #86868b;
  --accent: #007AFF;
  --divider: rgba(0, 0, 0, 0.06);
  --shadow-screenshot: 0 30px 80px -20px rgba(0, 0, 0, 0.32),
                       0 12px 32px -10px rgba(0, 0, 0, 0.18),
                       0 0 0 1px rgba(0, 0, 0, 0.08);

  /* Spacing scale (8px base) */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 48px;
  --space-6: 64px;
  --space-7: 96px;
  --space-8: 128px;
  --space-9: 192px;

  /* Layout */
  --content-max: 1200px;
  --prose-max: 720px;
  --side-pad: 24px;

  /* Type scale */
  --fs-hero: clamp(40px, 7vw, 64px);
  --fs-section: clamp(32px, 5vw, 48px);
  --fs-sub: clamp(24px, 3vw, 28px);
  --fs-body: 17px;
  --fs-secondary: 15px;
  --fs-micro: 13px;

  --lh-display: 1.08;
  --lh-body: 1.5;
  --lh-prose: 1.65;

  --ls-display: -0.022em;

  /* Motion */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --duration-fade: 600ms;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0a0c;
    --bg-alt: #111114;
    --text: #f5f5f7;
    --text-muted: #86868b;
    --accent: #0A84FF;
    --divider: rgba(255, 255, 255, 0.06);
    --shadow-screenshot: 0 30px 80px -20px rgba(0, 0, 0, 0.75),
                         0 12px 32px -10px rgba(0, 0, 0, 0.5),
                         0 0 0 1px rgba(255, 255, 255, 0.06);
  }
}

@media (min-width: 768px) {
  :root { --side-pad: 48px; }
}

@media (min-width: 1024px) {
  :root { --side-pad: 80px; }
}

/* Self-hosted Inter — only loaded by non-Apple platforms via the
   font-stack fallback chain. Mac users get SF Pro Display from the system. */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('images/fonts/Inter-Regular.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('images/fonts/Inter-Medium.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('images/fonts/Inter-SemiBold.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('images/fonts/Inter-Bold.woff2') format('woff2');
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display",
               "Inter", system-ui, sans-serif;
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, picture, svg { display: block; max-width: 100%; height: auto; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Display headings */
.display {
  font-size: var(--fs-hero);
  line-height: var(--lh-display);
  letter-spacing: var(--ls-display);
  font-weight: 700;
}
.section-title {
  font-size: var(--fs-section);
  line-height: var(--lh-display);
  letter-spacing: var(--ls-display);
  font-weight: 700;
  text-align: center;
}
.section-subtitle {
  font-size: clamp(18px, 2vw, 22px);
  color: var(--text-muted);
  text-align: center;
  margin-top: var(--space-2);
  font-weight: 400;
}
.sub-title {
  font-size: var(--fs-sub);
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.muted { color: var(--text-muted); }

/* Containers */
.container {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--side-pad);
}
.prose {
  width: 100%;
  max-width: var(--prose-max);
  margin: 0 auto;
  padding: 0 var(--side-pad);
}

/* Sections */
section {
  padding: var(--space-7) 0;
}
@media (min-width: 1024px) {
  section { padding: var(--space-8) 0; }
}
section.tinted {
  background: var(--bg-alt);
}
section + section { border-top: 1px solid var(--divider); }

/* Screenshot frame */
.screenshot {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: var(--shadow-screenshot);
}
.screenshot-wrap {
  margin-top: var(--space-5);
}

/* Sub-section block */
.subsection {
  margin-top: var(--space-7);
}
.subsection:first-of-type { margin-top: var(--space-6); }
.subsection-copy {
  max-width: var(--prose-max);
  margin: var(--space-4) auto 0;
  text-align: center;
  color: var(--text);
}
.subsection-copy .capabilities {
  margin-top: var(--space-2);
  color: var(--text-muted);
  font-size: var(--fs-secondary);
}

/* Scroll-fade entrance — set by app.js */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--duration-fade) var(--ease),
              transform var(--duration-fade) var(--ease);
}
.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .fade-in { opacity: 1; transform: none; }
}

/* ──────────── Hero ──────────── */
.hero {
  padding: var(--space-7) 0 var(--space-6);
  text-align: center;
}
@media (min-width: 1024px) {
  .hero { padding: var(--space-8) 0 var(--space-7); }
}
.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero-icon {
  width: 96px;
  height: 96px;
  border-radius: 22px;  /* macOS app-icon corner radius for 96px ~ 22px */
  margin-bottom: var(--space-3);
}
.hero-wordmark {
  font-size: var(--fs-hero);
  line-height: var(--lh-display);
  letter-spacing: var(--ls-display);
  font-weight: 700;
  margin-bottom: var(--space-2);
}
.hero-tagline {
  font-size: clamp(20px, 2.4vw, 26px);
  color: var(--text-muted);
  font-weight: 400;
  margin-bottom: var(--space-5);
}
.appstore-link {
  display: inline-block;
  transition: transform 200ms var(--ease);
}
.appstore-link:hover { transform: translateY(-1px); text-decoration: none; }
.appstore-link img { height: 48px; width: auto; }
.hero-trial {
  margin-top: var(--space-2);
  font-size: var(--fs-secondary);
}
.hero-screenshot {
  margin-top: var(--space-6);
  width: 100%;
}
@media (min-width: 1024px) {
  .hero-screenshot { margin-top: var(--space-7); }
}

/* ──────────── Acts (shared) ──────────── */
.act .section-subtitle { margin-bottom: var(--space-6); }

.sub-title-centered { text-align: center; }

/* Inline code chips */
code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo,
               Consolas, "Liberation Mono", monospace;
  font-size: 0.92em;
  background: var(--bg-alt);
  padding: 0.12em 0.4em;
  border-radius: 4px;
  color: var(--text);
}
@media (prefers-color-scheme: dark) {
  code { background: rgba(255,255,255,0.06); }
}

/* Supporting screenshot — second shot stacked cleanly below the anchor */
.support-shot {
  max-width: 88%;
  margin-left: auto;
  margin-right: auto;
  margin-top: var(--space-4);
}
@media (min-width: 768px) {
  .support-shot {
    max-width: 78%;
  }
}

/* ──────────── About ──────────── */
.about {
  padding: var(--space-7) 0;
}
.about-text {
  font-size: clamp(20px, 2.2vw, 24px);
  line-height: 1.5;
  text-align: center;
  color: var(--text);
}
.about-text + .about-text {
  margin-top: var(--space-3);
}
.about-prompt {
  margin-top: var(--space-5);
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: var(--lh-body);
  text-align: center;
  color: var(--text-muted);
}
.feedback-cta {
  margin-top: var(--space-3);
  text-align: center;
}
.feedback-btn {
  display: inline-block;
  padding: 12px 28px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  color: var(--accent);
  font-size: var(--fs-body);
  font-weight: 500;
  transition: transform 200ms var(--ease),
              background-color 200ms var(--ease),
              color 200ms var(--ease);
}
.feedback-btn:hover {
  transform: translateY(-1px);
  background: var(--accent);
  color: #fff;
  text-decoration: none;
}

/* ──────────── Footer ──────────── */
.footer {
  padding: var(--space-7) 0 var(--space-6);
  border-top: 1px solid var(--divider);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.footer-trial {
  margin-top: var(--space-2);
  font-size: var(--fs-secondary);
}
.footer-links {
  margin-top: var(--space-5);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  font-size: var(--fs-secondary);
}
.footer-links a {
  color: var(--text-muted);
}
.footer-links a:hover { color: var(--accent); }
.footer-links .dot { color: var(--text-muted); opacity: 0.5; }
.footer-mark {
  margin-top: var(--space-5);
  width: 40px;
  height: 40px;
  border-radius: 9px;
  opacity: 0.7;
}

/* ──────────── Page header (privacy etc.) ──────────── */
.page-header {
  padding: var(--space-6) 0 var(--space-4);
  text-align: center;
}
.back-link {
  display: inline-block;
  font-size: var(--fs-secondary);
  color: var(--text-muted);
  margin-bottom: var(--space-4);
}
.back-link:hover { color: var(--accent); }
.page-mark {
  width: 48px;
  height: 48px;
  border-radius: 11px;
  margin: 0 auto var(--space-3);
}
.page-title {
  font-size: var(--fs-section);
  line-height: var(--lh-display);
  letter-spacing: var(--ls-display);
  font-weight: 700;
}
.page-meta {
  margin-top: var(--space-1);
  font-size: var(--fs-secondary);
}

/* ──────────── Long-form legal text ──────────── */
.legal {
  padding: var(--space-5) 0 var(--space-7);
  line-height: var(--lh-prose);
  font-size: var(--fs-body);
}
.legal h2 {
  margin-top: var(--space-6);
  margin-bottom: var(--space-2);
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.legal h3 {
  margin-top: var(--space-4);
  margin-bottom: var(--space-1);
  font-size: 19px;
  font-weight: 600;
}
.legal p { margin-top: var(--space-2); }
.legal ul {
  margin-top: var(--space-2);
  padding-left: 1.4em;
}
.legal li { margin-top: 6px; }
.legal a { color: var(--accent); }