/* Universal Converter website: the app's own dark colours (gui/theme.py). */
:root {
  color-scheme: dark;
  --coral: #F28C78; --coral-hover: #E57A65; --coral-soft: #3A2825; --on-coral: #1D1517;
  --bg: #141417; --card: #1F1F25; --field: #28282F; --border: #32323B;
  --text: #EDEBEF; --muted: #A3A0AB;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--text); line-height: 1.6;
  font-family: "Segoe UI", system-ui, -apple-system, "Noto Sans", "Microsoft YaHei", "Yu Gothic UI", "Malgun Gothic", sans-serif;
}
a { color: var(--coral); }
img { max-width: 100%; height: auto; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
h1 { font-size: clamp(2rem, 4.5vw, 3rem); line-height: 1.15; margin: 0 0 16px; }
h2 { font-size: 1.7rem; margin: 64px 0 20px; }
h3 { margin: 0 0 6px; font-size: 1.2rem; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 640px; }

.top { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); }
.bar { display: flex; align-items: center; gap: 24px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-size: 1.05rem; }
.brand b { color: var(--coral); font-weight: 600; }
.bar nav { display: flex; gap: 20px; margin-inline-start: auto; }
.bar nav a { color: var(--text); text-decoration: none; }
.bar nav a:hover { color: var(--coral); }
.nav-support { color: var(--text); text-decoration: none; font-weight: 600; padding: 6px 14px; border: 1px solid var(--border);
  border-radius: 999px; background: var(--field); white-space: nowrap; }
.nav-support span { color: var(--coral); }
.nav-support:hover { border-color: var(--coral); }
.dl-help { margin: 8px 0 4px; padding: 0 16px; max-width: 640px; }
.dl-help summary { padding: 8px 0; font-weight: 600; font-size: .95rem; }
.dl-help ol { margin: 0 0 8px; padding-inline-start: 22px; color: var(--muted); }
.dl-help p { font-size: .95rem; }
.about-links { display: flex; flex-wrap: wrap; gap: 10px; margin: 28px 0; }
.bar select { background: var(--field); color: var(--text); border: 1px solid var(--border); border-radius: 8px; padding: 6px 8px; font: inherit; }

.hero { padding: 56px 0 24px; }
.hero-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 40px; align-items: center; }
.shot { border-radius: 14px; border: 1px solid var(--border); box-shadow: 0 18px 50px rgba(0, 0, 0, .14); display: block; }

.btn { display: inline-block; padding: 10px 20px; border-radius: 10px; background: var(--field); color: var(--text); border: 1px solid var(--border); text-decoration: none; font-weight: 600; }
.btn:hover { border-color: var(--coral); }
.btn.primary { background: var(--coral); color: var(--on-coral); border-color: var(--coral); padding: 14px 28px; font-size: 1.1rem; }
.btn.primary:hover { background: var(--coral-hover); }
.downloads { margin: 24px 0 8px; }
.btn.store { padding: 13px 20px; font-size: 1rem; margin: 6px 0; }
.downloads .note { color: var(--muted); font-size: .9rem; margin: 0 14px 0 8px; white-space: nowrap; }
.downloads .others { margin-top: 14px; }
.downloads { display: flex; flex-direction: column; gap: 12px; }
.dl-row { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 10px; }
.dl-win .note { display: block; margin: 6px 0 0 8px; }
/* On an Android phone (download.js adds .android): Android first and big, the others smaller */
.downloads.android .dl-android { order: -1; }
.downloads.android .dl-android .btn { padding: 14px 28px; font-size: 1.1rem; }
.downloads.android .dl-win .btn.primary { padding: 10px 20px; font-size: 1rem; }
.btn.primary.small { padding: 10px 20px; font-size: 1rem; min-width: 190px; text-align: center; }

.points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 40px; }
.point, .feature, details, .support { background: var(--card); border: 1px solid var(--border); border-radius: 14px; }
.point { padding: 20px 22px; }
.point p { margin: 0; color: var(--muted); }

.feature { display: grid; grid-template-columns: 1.2fr 1fr; gap: 28px; align-items: center; padding: 20px; margin-bottom: 16px; }
.feature img { border-radius: 10px; border: 1px solid var(--border); display: block; }
.feature p { color: var(--muted); margin: 0; }
.extras { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 32px; color: var(--muted); padding-inline-start: 20px; }

.steps { padding-inline-start: 22px; }
.steps li { margin: 8px 0; padding-inline-start: 6px; }
.steps li::marker { color: var(--coral); font-weight: 700; }

.tasks { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 10px; }
.tasks a { display: block; padding: 14px 18px; background: var(--card); border: 1px solid var(--border); border-radius: 12px; color: var(--text); text-decoration: none; height: 100%; }
.tasks a:hover { border-color: var(--coral); background: var(--coral-soft); }

details { padding: 4px 22px; margin-bottom: 10px; }
summary { cursor: pointer; font-weight: 600; padding: 12px 0; }
details p { color: var(--muted); margin-top: 0; }

.support { padding: 4px 26px 20px; margin-top: 64px; }
.support h2 { margin-top: 20px; }

.task { padding-top: 32px; }
.task .shot { margin: 24px 0; }
.crumb { color: var(--muted); margin: 0 0 8px; }

footer { margin-top: 80px; padding: 28px 0; border-top: 1px solid var(--border); color: var(--muted); font-size: .9rem; }

@media (max-width: 820px) {
  .hero-grid, .feature, .points { grid-template-columns: minmax(0, 1fr); }
  .hero-grid > *, .feature > *, .points > * { min-width: 0; }
  .wrap { padding: 0 16px; }
  .bar { gap: 10px; }
  .brand span { white-space: nowrap; font-size: .95rem; }
  .downloads .btn { max-width: 100%; white-space: normal; text-align: center; }
  .dl-help { max-width: none; }
  .bar nav { display: none; }
  .nav-support { margin-inline-start: auto; padding: 5px 10px; }
  .bar select { margin-inline-start: 0; }
  .extras { grid-template-columns: 1fr; }
  .downloads .note { white-space: normal; display: block; margin: 6px 0 10px; }
  .dl-row .note { margin: 0 0 0 12px; }
  h1 { overflow-wrap: anywhere; }
  .wrap { padding: 0 16px; }
}

@media (max-width: 480px) {
  .brand span { display: none; }
  .bar select { max-width: 120px; }
}

/* Support page: a sticker with a beating heart, the two buttons, then the details */
.support-page { text-align: center; max-width: 760px; }
.support-page .crumb, .support-page .support-info { text-align: start; }
.support-page .lead { margin: 0 auto; }
.sticker { position: relative; display: inline-flex; flex-direction: column; align-items: center; justify-content: center;
  width: 168px; height: 168px; margin: 18px auto 8px; border-radius: 50%; background: var(--coral); color: var(--on-coral);
  border: 6px solid #fff; box-shadow: 0 10px 30px rgba(0, 0, 0, .45), 0 0 0 1px var(--border);
  transform: rotate(-8deg); animation: sticker-in .7s cubic-bezier(.2, 1.4, .4, 1) backwards; transition: transform .3s; }
.sticker:hover { transform: rotate(4deg) scale(1.04); }
.sticker-heart { font-size: 64px; line-height: 1; color: #fff; animation: beat 1.6s ease-in-out .7s infinite; }
.sticker-word { font-weight: 800; font-size: 1.05rem; letter-spacing: .04em; text-transform: uppercase; margin-top: 4px; }
.spark { position: absolute; color: var(--coral); font-size: 18px; opacity: 0; animation: float-up 3.2s ease-out infinite; }
.spark.s1 { left: -14px; top: 40%; animation-delay: .9s; }
.spark.s2 { right: -18px; top: 25%; font-size: 14px; animation-delay: 1.9s; }
.spark.s3 { right: 6px; bottom: -6px; font-size: 22px; animation-delay: 2.7s; }
@keyframes beat { 0%, 100% { transform: scale(1); } 12% { transform: scale(1.18); } 24% { transform: scale(1); } 36% { transform: scale(1.12); } 48% { transform: scale(1); } }
@keyframes sticker-in { from { transform: rotate(-30deg) scale(.4); opacity: 0; } to { transform: rotate(-8deg) scale(1); opacity: 1; } }
@keyframes float-up { 0% { opacity: 0; transform: translateY(0) scale(.6); } 15% { opacity: 1; } 100% { opacity: 0; transform: translateY(-70px) scale(1.1); } }
@media (prefers-reduced-motion: reduce) {
  .sticker { animation: fade-in .8s ease-out backwards; }
  .sticker-heart { animation: soft-beat 2.4s ease-in-out .8s infinite; }
  .spark { display: none; }
}
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes soft-beat { 0%, 100% { transform: scale(1); } 15% { transform: scale(1.08); } 30% { transform: scale(1); } }
.pay-buttons { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin: 28px 0 8px; }
.btn.pay { min-width: 200px; text-align: center; }
.support-info { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 6px 26px 14px; margin-top: 36px; }
.support-info ul { color: var(--muted); padding-inline-start: 20px; }
.support-info li { margin: 8px 0; }
.support-info h2 { margin: 18px 0 6px; }