/* 官網與分享頁樣式。編輯器樣式在 editor.css。 */
@font-face {
  font-family: "Excalifont";
  src: url("/fonts/excalifont.woff2") format("woff2");
  font-display: swap;
}

:root {
  --bg: #fdfcf8;
  --surface: #ffffff;
  --ink: #1e1e1e;
  --muted: #5c5f66;
  --line: #1e1e1e;
  --accent: #6965db;
  --accent-ink: #ffffff;
  /* 手寫字型只有拉丁字；中文退回一般黑體，避免系統 cursive 字型 */
  --hand: "Excalifont", system-ui, "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  --text: system-ui, -apple-system, "Segoe UI", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  --wobble: 255px 15px 225px 15px / 15px 225px 15px 255px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --surface: #1c1c1f;
    --ink: #e3e3e8;
    --muted: #a0a3ab;
    --line: #5a5a62;
    --accent: #a8a5ff;
    --accent-ink: #121212;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.6 var(--text);
}

a { color: var(--accent); }
h1, h2, h3, .brand { font-family: var(--hand); font-weight: 400; }

.bar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 12px 24px;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 25%, transparent);
}
.brand { font-size: 28px; color: var(--ink); text-decoration: none; }
.nav { display: flex; gap: 20px; flex: 1; }
.nav a { color: var(--muted); text-decoration: none; }
.nav a:hover { color: var(--ink); }

.lang {
  font: inherit;
  color: var(--ink);
  background: var(--surface);
  border: 1.5px solid var(--line);
  border-radius: 8px;
  padding: 4px 8px;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font: 15px/1.2 var(--text);
  color: var(--ink);
  background: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--wobble);
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.1s ease;
}
.button:hover { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--line); }
.button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }

.sketch-card {
  min-width: 0;
  background: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--wobble);
  padding: 20px 24px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(320px, 1.4fr);
  gap: 40px;
  align-items: center;
  max-width: 1240px;
  margin: 0 auto;
  padding: 56px 24px 24px;
}
.hero h1 { font-size: clamp(40px, 6vw, 64px); line-height: 1.1; margin: 0 0 16px; }
.lead { font-size: 19px; color: var(--muted); margin: 0 0 28px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-figure { margin: 0; padding: 12px; min-height: 240px; }
.hero-figure img { display: block; width: 100%; height: auto; }

.section { max-width: 1240px; margin: 0 auto; padding: 48px 24px; }
.features { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.feature h3 { font-size: 22px; margin: 0 0 8px; line-height: 1.25; }
.feature p { margin: 0; color: var(--muted); font-size: 15px; }

.footer { text-align: center; color: var(--muted); font-size: 13px; padding: 32px 24px 48px; }

/* 分享頁 */
.viewer { min-height: 100vh; display: flex; flex-direction: column; }
.viewer-title { flex: 1; font-family: var(--hand); font-size: 22px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
.viewer-canvas { flex: 1; display: grid; place-items: center; padding: 24px; overflow: auto; }
.viewer-canvas img { max-width: 100%; height: auto; }

@media (max-width: 1000px) {
  .features { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
  .hero { grid-template-columns: minmax(0, 1fr); }
  .hero h1 { overflow-wrap: anywhere; }
  .nav { display: none; }
  .bar { justify-content: space-between; padding: 10px 16px; gap: 10px; }
  .section, .hero { padding-left: 16px; padding-right: 16px; }
}

@media (max-width: 560px) {
  .features { grid-template-columns: minmax(0, 1fr); }
  .nav-cta { display: none; }
}