/* ==========================================================================
   Mood Tracker — Calm & Minimal theme
   No external font/CDN dependencies by design (privacy-first, self-hosted).
   ========================================================================== */

:root {
  --color-bg: #FAF9F6;
  --color-bg-alt: #F1F0EA;
  --color-surface: #FFFFFF;
  --color-text: #2E332E;
  --color-text-muted: #6B7268;
  --color-primary: #6E9E89;
  --color-primary-dark: #517A68;
  --color-primary-light: #E4EEE9;
  --color-accent: #E8A87C;
  --color-accent-dark: #D48F5E;
  --color-border: #E4E2DA;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --shadow-sm: 0 1px 2px rgba(46, 51, 46, 0.06);
  --shadow-md: 0 8px 24px rgba(46, 51, 46, 0.08);

  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 88px 0;
}

section.alt {
  background: var(--color-bg-alt);
}

h1, h2, h3, h4 {
  line-height: 1.2;
  font-weight: 700;
  margin: 0 0 16px;
}

h1 { font-size: clamp(2.2rem, 4vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.2rem; }

p { margin: 0 0 16px; color: var(--color-text-muted); }

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
  display: inline-block;
}

.section-head {
  max-width: 640px;
  margin: 0 auto 48px;
  text-align: center;
}

.section-head p { margin: 0 auto; }

/* Buttons -------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  font-size: 1rem;
  font-family: inherit;
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}

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

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

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

.btn-accent {
  background: var(--color-accent);
  color: #2E332E;
}

.btn-accent:hover { background: var(--color-accent-dark); }

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-ghost:hover { border-color: var(--color-primary); }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

/* Header / nav ----------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 249, 246, 0.9);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--color-text);
}

.brand img { width: 28px; height: 28px; }

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
}

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

.nav-cta { display: flex; gap: 10px; align-items: center; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  margin: 5px 0;
  transition: 0.2s;
}

/* Hero --------------------------------------------------------------- */

.hero {
  padding: 72px 0 96px;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.hero h1 { margin-bottom: 20px; }
.hero .lead {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 480px;
}

.hero-art {
  display: flex;
  justify-content: center;
  gap: 20px;
}

.hero-art img { max-height: 420px; }

/* Feature grid --------------------------------------------------------- */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.feature-card h3 { margin-bottom: 8px; }
.feature-card p { margin-bottom: 0; font-size: 0.95rem; }

/* Screenshot gallery ----------------------------------------------------- */

.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.screenshot-item { text-align: center; }

.screenshot-item img {
  margin: 0 auto 16px;
  max-height: 480px;
}

.screenshot-item span {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* Donate ----------------------------------------------------------------- */

.donate-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 56px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}

.donate-panel .donate-copy p:last-of-type { margin-bottom: 24px; }

.donate-side {
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  padding: 32px;
  text-align: center;
}

.donate-side h3 { margin-bottom: 8px; }
.donate-side p { font-size: 0.9rem; margin-bottom: 20px; }

/* Download ---------------------------------------------------------------- */

.download-panel {
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.badge-row {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.store-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #111;
  color: #fff;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
}

.store-badge.disabled {
  background: var(--color-bg-alt);
  color: var(--color-text-muted);
  border: 1px dashed var(--color-border);
}

.store-badge small {
  display: block;
  font-weight: 400;
  font-size: 0.7rem;
  opacity: 0.8;
}

/* Contact ------------------------------------------------------------- */

.contact-wrap {
  max-width: 560px;
  margin: 0 auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.form-row { margin-bottom: 18px; }

.form-row label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 6px;
}

.form-row input,
.form-row textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  font-family: inherit;
  font-size: 1rem;
  background: var(--color-bg);
  color: var(--color-text);
}

.form-row textarea { min-height: 120px; resize: vertical; }

.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* honeypot field, hidden from real users */
.hp-field {
  position: absolute;
  left: -9999px;
  top: -9999px;
  opacity: 0;
  pointer-events: none;
}

.form-status {
  margin-top: 14px;
  font-size: 0.9rem;
  display: none;
}

.form-status.visible { display: block; }
.form-status.success { color: var(--color-primary-dark); }
.form-status.error { color: #B45252; }

/* Footer ------------------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 40px 0;
  background: var(--color-bg-alt);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links {
  display: flex;
  gap: 20px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
}

.footer-note {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin: 0;
}

/* Docs page ------------------------------------------------------------- */

.docs-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  padding: 56px 0 96px;
  align-items: start;
}

.docs-nav {
  position: sticky;
  top: 88px;
  border-right: 1px solid var(--color-border);
  padding-right: 24px;
}

.docs-nav h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.docs-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.docs-nav li { margin-bottom: 10px; }

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

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

.docs-content h2 {
  margin-top: 48px;
  padding-top: 16px;
}

.docs-content h2:first-child { margin-top: 0; }

.docs-content ul, .docs-content ol {
  color: var(--color-text-muted);
}

.callout {
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 24px 0;
  font-size: 0.95rem;
}

/* Responsive ------------------------------------------------------------ */

@media (max-width: 860px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-art { order: -1; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .screenshot-grid { grid-template-columns: 1fr; }
  .donate-panel { grid-template-columns: 1fr; padding: 32px; }
  .docs-layout { grid-template-columns: 1fr; }
  .docs-nav {
    position: static;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    padding-right: 0;
    padding-bottom: 24px;
  }

  .nav-links, .nav-cta .btn-ghost { display: none; }
  .nav-toggle { display: block; }

  .nav.open .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    padding: 20px 24px;
    border-bottom: 1px solid var(--color-border);
  }
}

@media (max-width: 600px) {
  .feature-grid { grid-template-columns: 1fr; }
  section { padding: 56px 0; }
  .contact-wrap { padding: 24px; }
}