:root {
  color-scheme: dark;
  --bg: #171c48;
  --surface: #0b172b;
  --surface-2: #12203a;
  --input: #081426;
  --line: rgba(111, 153, 205, 0.3);
  --text: #f8fbff;
  --muted: #a9b9d4;
  --accent: #ff627e;
  --accent-ink: #260712;
  --violet: #7a63ff;
  --green: #43dda2;
  --red: #ff7186;
  --shadow: 0 18px 50px rgba(3, 8, 24, 0.3);
}
html[data-theme="light"] {
  color-scheme: light;
  --bg: #eef2ff;
  --surface: #ffffff;
  --surface-2: #f4f7ff;
  --input: #f8faff;
  --line: rgba(49, 77, 127, 0.2);
  --text: #13213c;
  --muted: #64728d;
  --accent: #ed4869;
  --accent-ink: #ffffff;
  --violet: #654ee8;
  --green: #12875d;
  --red: #d83b58;
  --shadow: 0 18px 45px rgba(44, 62, 112, 0.13);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 100% 0, color-mix(in srgb, var(--violet) 18%, transparent), transparent 30rem),
    radial-gradient(circle at 0 50%, color-mix(in srgb, #29d3ff 9%, transparent), transparent 34rem),
    var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}
button, textarea, a { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
[hidden] { display: none !important; }
.shell { width: min(760px, 100%); margin: auto; padding: max(20px, env(safe-area-inset-top)) 16px max(42px, env(safe-area-inset-bottom)); }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.brand { color: var(--text); font: 800 clamp(1.55rem, 7vw, 2.2rem)/1 Georgia, serif; text-decoration: none; }
.brand::after { color: var(--accent); content: "."; }
.top-actions { display: flex; gap: 8px; }
.service-switch { display: flex; justify-content: flex-end; margin: 14px 0 0; }
.service-switch-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 40px;
  padding: 8px 15px;
  border: 1px solid color-mix(in srgb, var(--accent) 58%, var(--line));
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 9%, var(--surface));
  color: var(--accent);
  font-size: .78rem;
  font-weight: 850;
  text-decoration: none;
  white-space: nowrap;
}
.service-switch-link:hover, .service-switch-link:focus-visible {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 12%, transparent);
  outline: none;
}
.small-button, .icon-button, .primary-button, .secondary-button, .load-more {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  font-weight: 800;
}
.small-button, .icon-button, .secondary-button, .load-more { background: var(--surface); color: var(--text); }
.small-button { padding: 8px 14px; }
.icon-button { width: 42px; padding: 0; }
.primary-button { padding: 11px 18px; border-color: transparent; background: var(--accent); color: var(--accent-ink); }
.secondary-button { padding: 9px 14px; }
.link-button { display: inline-grid; place-items: center; text-decoration: none; }
button:disabled { cursor: not-allowed; opacity: .5; }
.intro { padding: clamp(48px, 13vw, 90px) 2px clamp(30px, 8vw, 52px); }
.eyebrow { margin: 0 0 9px; color: var(--accent); font-size: .74rem; font-weight: 900; letter-spacing: .18em; text-transform: uppercase; }
.intro h1 { margin: 0; max-width: 650px; font-size: clamp(2.3rem, 11vw, 5.3rem); line-height: 1.02; letter-spacing: -.04em; }
.intro > p:last-child { max-width: 630px; margin: 22px 0 0; color: var(--muted); line-height: 1.8; }
.composer, .result, .account-panel, .token-panel, .history {
  margin-top: 16px;
  padding: clamp(18px, 5vw, 28px);
  border: 1px solid var(--line);
  border-radius: 24px;
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  box-shadow: var(--shadow);
}
.section-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.section-head h2, .result h2 { margin: 0; font-size: 1.35rem; }
.history-head-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.account-label { padding-top: 5px; color: var(--muted); font-size: .78rem; }
.field-label { display: block; margin-top: 22px; color: var(--muted); font-size: .8rem; font-weight: 800; }
textarea { width: 100%; margin-top: 8px; padding: 15px; resize: vertical; border: 1px solid var(--line); border-radius: 17px; outline: none; background: var(--input); color: var(--text); line-height: 1.6; }
textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 14%, transparent); }
.composer-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 13px; }
.detected { min-width: 0; overflow: hidden; color: var(--muted); font-size: .76rem; text-overflow: ellipsis; white-space: nowrap; }
.result { border-color: color-mix(in srgb, var(--green) 48%, var(--line)); }
.result > a { display: block; margin-top: 11px; overflow-wrap: anywhere; color: var(--green); text-underline-offset: 3px; }
.button-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.muted { margin: 10px 0 0; color: var(--muted); line-height: 1.65; }
.google-button { display: flex; justify-content: flex-start; min-height: 44px; margin-top: 16px; }
.account-box { display: flex; align-items: center; gap: 12px; margin-top: 16px; }
.account-box img { width: 46px; height: 46px; border: 1px solid var(--line); border-radius: 50%; object-fit: cover; }
.account-box div { min-width: 0; }
.account-box strong, .account-box span { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.account-box span { margin-top: 3px; color: var(--muted); font-size: .78rem; }
.token-state { padding: 7px 11px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: .75rem; font-weight: 900; }
.token-state[data-active="true"] { border-color: color-mix(in srgb, var(--green) 50%, var(--line)); color: var(--green); }
.token-meta { display: grid; gap: 8px; margin-top: 18px; padding: 14px; border: 1px solid var(--line); border-radius: 17px; background: var(--surface-2); }
.token-meta span { display: flex; justify-content: space-between; gap: 15px; color: var(--muted); font-size: .78rem; }
.token-meta strong { color: var(--text); }
.token-meta b { min-width: 0; overflow: hidden; font-weight: 600; text-overflow: ellipsis; white-space: nowrap; }
.danger-button { border-color: color-mix(in srgb, var(--red) 55%, var(--line)); color: var(--red); }
.token-once { margin-top: 18px; padding: 15px; border: 1px solid color-mix(in srgb, var(--green) 50%, var(--line)); border-radius: 17px; background: color-mix(in srgb, var(--green) 7%, var(--surface)); }
.token-once > strong { display: block; color: var(--green); font-size: .83rem; }
.token-copy-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; margin-top: 11px; }
.token-copy-row input { min-width: 0; padding: 11px 13px; border: 1px solid var(--line); border-radius: 12px; outline: none; background: var(--input); color: var(--text); font: 600 .8rem/1.4 ui-monospace, SFMono-Regular, Consolas, monospace; }
.token-message { min-height: 1.2em; margin: 13px 0 0; color: var(--muted); font-size: .76rem; }
.share-list { margin-top: 18px; border-top: 1px solid var(--line); }
.share-row { display: grid; grid-template-columns: 6.5rem minmax(0, 1fr) auto; gap: 12px; align-items: center; padding: 15px 0; border-bottom: 1px solid var(--line); }
.share-row--manage { grid-template-columns: 2.5rem 6.5rem minmax(0, 1fr); border-radius: 14px; transition: background-color .16s ease; }
.share-row--manage.is-selected { background: color-mix(in srgb, var(--accent) 9%, transparent); }
.share-selector { width: 34px; height: 34px; display: grid; place-items: center; padding: 0; border: 1px solid var(--line); border-radius: 50%; background: var(--surface-2); color: var(--accent-ink); cursor: pointer; font-weight: 900; }
.share-selector.is-selected { border-color: var(--accent); background: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 13%, transparent); }
.share-date { color: var(--muted); font-size: .75rem; }
.share-main { min-width: 0; }
.share-main strong { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.share-main span { display: block; margin-top: 4px; color: var(--muted); font-size: .74rem; }
.share-actions { display: flex; gap: 6px; }
.share-actions button, .share-actions a { width: 38px; height: 38px; display: grid; place-items: center; padding: 0; border: 1px solid var(--line); border-radius: 50%; background: var(--surface-2); color: var(--text); text-decoration: none; cursor: pointer; }
.share-icon { width: 19px; height: 19px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.share-actions .delete { color: var(--red); }
.empty { padding: 28px 10px 8px; color: var(--muted); text-align: center; }
.load-more { display: block; margin: 18px auto 0; padding: 9px 16px; }
.history-manage-bar { position: sticky; z-index: 8; bottom: max(12px, env(safe-area-inset-bottom)); display: grid; gap: 10px; margin: 20px -8px -8px; padding: 14px; border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--line)); border-radius: 19px; background: color-mix(in srgb, var(--surface) 96%, transparent); box-shadow: var(--shadow); backdrop-filter: blur(18px); }
.history-manage-bar > strong { font-size: .82rem; }
.history-manage-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.history-manage-actions .primary-button { color: var(--accent-ink); }
footer { margin-top: 34px; padding: 20px 2px; border-top: 1px solid var(--line); color: var(--muted); font-size: .75rem; line-height: 1.6; }
.toast { position: fixed; z-index: 10; right: 16px; bottom: max(18px, env(safe-area-inset-bottom)); left: 16px; width: min(520px, calc(100% - 32px)); margin: auto; padding: 13px 16px; border: 1px solid var(--line); border-radius: 15px; background: var(--surface); color: var(--text); box-shadow: var(--shadow); text-align: center; }
@media (max-width: 560px) {
  .shell { padding-inline: 12px; }
  .service-switch { justify-content: center; }
  .composer-foot { align-items: stretch; flex-direction: column; }
  .detected { white-space: normal; overflow-wrap: anywhere; }
  .share-row { grid-template-columns: minmax(0, 1fr) auto; }
  .share-date { grid-column: 1 / -1; margin-bottom: -6px; }
  .share-row--manage { grid-template-columns: 2.5rem minmax(0, 1fr); }
  .share-row--manage .share-date { grid-column: 2; }
  .share-row--manage .share-main { grid-column: 2; }
  .history-head-actions { max-width: 11.5rem; }
  .history-manage-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .history-manage-actions #createSelectionButton { grid-column: 1 / -1; }
  .history-manage-actions #cancelManageButton { grid-column: 1 / -1; }
  .token-meta span { align-items: flex-start; flex-direction: column; gap: 3px; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }