/* 這份樣式定義全站色彩、排版、重設與深淺色主題。 */

:root {
  color-scheme: light;
  --page-bg: #f5f8fc;
  --surface: #ffffff;
  --surface-soft: #edf4fa;
  --surface-note: #fdfaf3;
  --text: #233142;
  --text-muted: #57697b;
  --primary: #3b82c4;
  --primary-strong: #2468a6;
  --primary-soft: #e5f1fb;
  --success: #2d9468;
  --success-soft: #e2f6ed;
  --accent: #df8516;
  --accent-soft: #fef4dd;
  --danger: #cf4353;
  --danger-soft: #fdebed;
  --border: #ccd8e4;
  --shadow: 0 12px 32px rgb(35 49 66 / 8%), 0 2px 6px rgb(35 49 66 / 4%);
  --radius-large: 22px;
  --radius-medium: 15px;
  --typing-size: 22px;
  font-family: system-ui, "Noto Sans TC", "Microsoft JhengHei", -apple-system, BlinkMacSystemFont, sans-serif;
  font-synthesis: none;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --page-bg: #151d28;
  --surface: #1e2937;
  --surface-soft: #273545;
  --surface-note: #292d34;
  --text: #edf3f8;
  --text-muted: #9eb1c3;
  --primary: #6cb7f9;
  --primary-strong: #8ec8fa;
  --primary-soft: #1d354d;
  --success: #52d19f;
  --success-soft: #183e30;
  --accent: #ffcf56;
  --accent-soft: #483c1c;
  --danger: #ff7a8a;
  --danger-soft: #4c252a;
  --border: #314254;
  --shadow: 0 14px 36px rgb(0 0 0 / 35%), 0 2px 8px rgb(0 0 0 / 20%);
}

:root[data-text-size="small"] {
  --typing-size: 18px;
}

:root[data-text-size="medium"] {
  --typing-size: 22px;
}

:root[data-text-size="large"] {
  --typing-size: 26px;
}

* {
  box-sizing: border-box;
}

/* 護眼滑順滾動條 */
::-webkit-scrollbar {
  width: 9px;
  height: 9px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  border: 2px solid transparent;
  border-radius: 999px;
  background: color-mix(in srgb, var(--border) 80%, transparent);
  background-clip: padding-box;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
  background-clip: padding-box;
}

html {
  min-height: 100%;
  background: var(--page-bg);
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 8%, color-mix(in srgb, var(--primary-soft) 80%, transparent) 0 8%, transparent 26%),
    radial-gradient(circle at 90% 12%, color-mix(in srgb, var(--accent-soft) 60%, transparent) 0 6%, transparent 22%),
    linear-gradient(180deg, var(--page-bg), color-mix(in srgb, var(--page-bg) 85%, var(--surface-soft)));
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
select {
  min-height: 44px;
}

button {
  cursor: pointer;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 12px;
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  line-height: 1.15;
}

h2 {
  margin-bottom: 10px;
  font-size: clamp(1.4rem, 2.6vw, 2rem);
}

h3 {
  margin-bottom: 8px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 8px;
  left: 8px;
  padding: 10px 14px;
  color: var(--surface);
  background: var(--text);
  border-radius: 8px;
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px clamp(16px, 4vw, 56px);
  border-bottom: 1px solid color-mix(in srgb, var(--border) 72%, transparent);
  background: color-mix(in srgb, var(--page-bg) 88%, transparent);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
}

.brand__icon {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  font-size: 1.55rem;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  margin-top: 2px;
  color: var(--text-muted);
}

.header-tools {
  display: flex;
  gap: 8px;
}

#app {
  width: min(1500px, calc(100% - 32px));
  min-height: calc(100vh - 180px);
  margin: 0 auto;
  padding: 44px 0 64px;
}

.site-footer {
  padding: 24px 16px;
  color: var(--text-muted);
  text-align: center;
}

.site-footer p {
  margin: 0;
}

.eyebrow {
  margin-bottom: 8px;
  color: var(--primary-strong);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.help-text {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.turnstile-container {
  position: fixed;
  width: 1px;
  height: 1px;
  overflow: hidden;
}