/* PenPal website. Colours match the app's Theme.swift (green accent). */

:root {
  --background: #F0EAD6;      /* eggshell */
  --surface: #FCFAF4;
  --text: #1E2420;
  --secondary: #5F6660;
  --accent: #17784A;
  --accent-fill: #2A9D63;
  --tint: #D4F0E0;
  --on-fill: #FFFFFF;
  --shadow: 0 8px 24px rgba(23, 120, 74, 0.08);
  --radius: 22px;
  --max: 1120px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #3A3A41;    /* dusky grey */
    --surface: #4A4A52;
    --text: #F4F2EC;
    --secondary: #C3C1BA;
    --accent: #7FE0AE;
    --accent-fill: #2A9D63;
    --tint: #2C4B3B;
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  width: min(var(--max), 100% - 48px);
  margin-inline: auto;
}

/* Navigation */

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--background) 85%, transparent);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
}

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
  color: var(--accent);
  text-decoration: none;
}

.brand-mark {
  width: 34px;
  height: 34px;
  /* iOS-style rounded square, like the app icon on the Home Screen */
  border-radius: 22.5%;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
}

.nav-links {
  display: flex;
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
}

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

@media (max-width: 640px) {
  .nav-links { gap: 16px; }
  .nav-links .optional { display: none; }
}

/* Buttons */

.button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: 999px;
  background: var(--accent-fill);
  color: var(--on-fill);
  font-weight: 700;
  text-decoration: none;
  box-shadow: var(--shadow);
}

.button.secondary {
  background: var(--surface);
  color: var(--accent);
}

.button svg { width: 20px; height: 20px; }

/* Hero */

.hero {
  padding: 56px 0 72px;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--tint);
  color: var(--accent);
  font-weight: 700;
  font-size: 14px;
}

h1 {
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 18px 0;
  color: var(--accent);
}

.lead {
  font-size: 20px;
  color: var(--secondary);
  max-width: 34em;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 14px;
}

.fineprint {
  font-size: 14px;
  color: var(--secondary);
}

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

.phones img {
  width: min(320px, 70vw);
  filter: drop-shadow(0 24px 40px rgba(0, 0, 0, 0.18));
}

.phones img.back {
  position: absolute;
  width: min(260px, 56vw);
  right: -10px;
  top: 60px;
  opacity: 0.95;
  z-index: -1;
}

@media (max-width: 860px) {
  .hero .container { grid-template-columns: 1fr; text-align: center; }
  .lead { margin-inline: auto; }
  .actions { justify-content: center; }
  .phones img.back { display: none; }
}

/* Sections */

section { padding: 72px 0; }

h2 {
  font-size: clamp(30px, 4vw, 42px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
  color: var(--accent);
}

.section-lead {
  color: var(--secondary);
  font-size: 19px;
  max-width: 40em;
  margin: 0 0 40px;
}

.center { text-align: center; }
.center .section-lead { margin-inline: auto; }

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

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

.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 16px 0 8px;
  font-size: 20px;
}

.card p { margin: 0; color: var(--secondary); }

.icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--tint);
  color: var(--accent);
  display: grid;
  place-items: center;
}

.icon svg { width: 26px; height: 26px; }

/* Showcase rows */

.showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  margin-bottom: 72px;
}

.showcase:last-child { margin-bottom: 0; }

.showcase img {
  width: min(320px, 80vw);
  margin-inline: auto;
  filter: drop-shadow(0 20px 36px rgba(0, 0, 0, 0.16));
}

.showcase.flip .text { order: 2; }

.showcase ul {
  padding: 0;
  list-style: none;
  margin: 20px 0 0;
}

.showcase li {
  padding-left: 30px;
  position: relative;
  margin-bottom: 10px;
}

.showcase li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.55em;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-fill);
}

@media (max-width: 800px) {
  .showcase { grid-template-columns: 1fr; gap: 28px; }
  .showcase.flip .text { order: 0; }
}

/* Privacy band */

.band {
  background: var(--accent-fill);
  color: var(--on-fill);
  border-radius: 32px;
  padding: 56px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 32px;
  align-items: center;
}

.band h2 { color: var(--on-fill); }
.band p { margin: 0; font-size: 18px; opacity: 0.95; }

.band .big-icon svg { width: 84px; height: 84px; }

@media (max-width: 700px) {
  .band { grid-template-columns: 1fr; padding: 36px; text-align: center; }
  .band .big-icon { margin-inline: auto; }
}

/* Pricing */

.pricing {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: stretch;
}

@media (max-width: 900px) { .pricing { grid-template-columns: 1fr; max-width: 460px; margin-inline: auto; } }

.plan {
  display: flex;
  flex-direction: column;
}

.plan.featured {
  outline: 3px solid var(--accent-fill);
  position: relative;
}

.badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-fill);
  color: var(--on-fill);
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
}

.price {
  font-size: 40px;
  font-weight: 800;
  color: var(--accent);
  margin: 8px 0 0;
}

.price small {
  font-size: 16px;
  font-weight: 600;
  color: var(--secondary);
}

.plan ul {
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
  color: var(--secondary);
}

.plan li { margin-bottom: 8px; }
.plan li::before { content: "✓  "; color: var(--accent); font-weight: 800; }

/* FAQ */

.faq {
  max-width: 820px;
  margin-inline: auto;
}

details {
  background: var(--surface);
  border-radius: 18px;
  padding: 18px 22px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
}

summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}

summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; float: right; color: var(--accent); font-weight: 800; }
details[open] summary::after { content: "–"; }
details p { color: var(--secondary); margin: 12px 0 0; }

/* Footer */

footer {
  padding: 48px 0 56px;
  color: var(--secondary);
  font-size: 15px;
}

footer .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
}

footer nav a {
  margin-right: 20px;
  color: var(--secondary);
  text-decoration: none;
  font-weight: 600;
}

footer nav a:hover { color: var(--accent); }

/* Legal and support pages */

.doc {
  max-width: 780px;
  margin: 40px auto 80px;
  background: var(--surface);
  border-radius: 28px;
  padding: clamp(24px, 5vw, 56px);
  box-shadow: var(--shadow);
}

.doc h1 { font-size: clamp(32px, 5vw, 44px); margin-top: 0; }
.doc h2 { font-size: 22px; margin-top: 36px; }
.doc ul { padding-left: 22px; }
.doc li { margin-bottom: 8px; }

.doc table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 15px;
}

.doc th, .doc td {
  text-align: left;
  vertical-align: top;
  padding: 10px 12px;
  border-bottom: 1px solid color-mix(in srgb, var(--secondary) 25%, transparent);
}

.doc th { color: var(--accent); }

@media (max-width: 600px) {
  .doc table, .doc thead, .doc tbody, .doc tr, .doc th, .doc td { display: block; }
  .doc thead { display: none; }
  .doc td { border: none; padding: 4px 0; }
  .doc tr { padding: 12px 0; border-bottom: 1px solid color-mix(in srgb, var(--secondary) 25%, transparent); }
}