:root {
  --bg: #081421;
  --surface: #0e2030;
  --surface-2: #11283a;
  --text: #e7f0f4;
  --muted: #8da0ab;
  --faint: #526772;
  --line: rgba(172, 203, 220, .15);
  --accent: #66e5c2;
  --accent-strong: #35c59e;
  --violet: #9b83ff;
  --shadow: rgba(0, 0, 0, .24);
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", ui-monospace, monospace;
}

html[data-theme="light"] {
  --bg: #f4f8f7;
  --surface: #ffffff;
  --surface-2: #edf7f4;
  --text: #10252b;
  --muted: #5e747c;
  --faint: #82949a;
  --line: rgba(27, 73, 76, .14);
  --accent: #087f69;
  --accent-strong: #076d5b;
  --violet: #6e58c9;
  --shadow: rgba(18, 63, 66, .1);
}

* { box-sizing: border-box; }
html { color-scheme: dark; }
html[data-theme="light"] { color-scheme: light; }
body { margin: 0; min-width: 320px; color: var(--text); background: var(--bg); font-family: var(--sans); }
body::before { content: ""; position: fixed; z-index: -1; inset: 0; background: radial-gradient(circle at 88% 4%, rgba(57, 150, 175, .14), transparent 29rem), radial-gradient(circle at 8% 52%, rgba(102, 229, 194, .06), transparent 25rem); pointer-events: none; }
html[data-theme="light"] body::before { background: radial-gradient(circle at 88% 4%, rgba(48, 153, 158, .1), transparent 29rem), radial-gradient(circle at 8% 52%, rgba(8, 127, 105, .06), transparent 25rem); }
button, input { font: inherit; }
button { cursor: pointer; }
button:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.shell { width: min(1120px, calc(100% - 42px)); margin: 0 auto; }
.topbar { height: 88px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 11px; color: var(--text); text-decoration: none; font-size: 18px; font-weight: 750; letter-spacing: .03em; }
.brand small { display: block; margin-top: 1px; color: var(--accent); font-family: var(--mono); font-size: 8px; font-weight: 500; letter-spacing: .16em; }
.brand-mark { display: grid; width: 29px; height: 29px; place-items: center; border: 1px solid var(--accent); border-radius: 8px; color: var(--accent); font-family: var(--mono); font-size: 14px; transform: rotate(-4deg); }
.top-actions { display: flex; align-items: center; gap: 15px; }
.privacy-badge { display: flex; align-items: center; gap: 7px; color: var(--muted); font-size: 12px; }.privacy-badge i { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 9px var(--accent); }
.theme-toggle { display: inline-flex; align-items: center; gap: 6px; padding: 8px 11px; border: 1px solid var(--line); border-radius: 6px; color: var(--muted); background: transparent; font-size: 12px; }.theme-toggle:hover { color: var(--text); background: color-mix(in srgb, var(--accent) 8%, transparent); }
.hero { display: grid; grid-template-columns: 1fr auto; gap: 45px; align-items: end; padding: 78px 3% 57px; }
.eyebrow { margin: 0 0 9px; color: var(--accent); font-family: var(--mono); font-size: 11px; letter-spacing: .15em; }
.hero h1 { margin: 0 0 17px; font-size: clamp(40px, 6vw, 70px); line-height: 1.14; letter-spacing: -.055em; }.hero h1 em { color: var(--accent); font-style: normal; }.hero p:not(.eyebrow) { max-width: 610px; margin: 0; color: var(--muted); font-size: 16px; line-height: 1.8; }
.hero-code { padding-bottom: 8px; color: var(--faint); font-family: var(--mono); font-size: 12px; }.hero-code span { color: var(--violet); }.hero-code b { color: var(--accent); font-weight: 500; }
.workspace { overflow: hidden; border: 1px solid var(--line); border-radius: 11px; background: var(--surface); box-shadow: 0 22px 60px var(--shadow); }
.controls { display: grid; grid-template-columns: 1fr 1fr 1.15fr; gap: 35px; align-items: end; padding: 26px 28px; border-bottom: 1px solid var(--line); background: var(--surface-2); }
.control-group label, .format-options legend { display: block; margin-bottom: 9px; color: var(--muted); font-size: 12px; }.control-group small { display: block; margin-top: 7px; color: var(--faint); font-size: 10px; }
.number-control { display: grid; grid-template-columns: 39px 1fr 39px; height: 42px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); }.number-control button { border: 0; color: var(--accent); background: transparent; font-size: 18px; }.number-control button:hover { background: color-mix(in srgb, var(--accent) 8%, transparent); }.number-control input { width: 100%; border: 0; border-right: 1px solid var(--line); border-left: 1px solid var(--line); color: var(--text); background: transparent; text-align: center; font-family: var(--mono); appearance: textfield; }.number-control input::-webkit-inner-spin-button { appearance: none; }
.format-options { display: flex; align-items: center; gap: 9px; min-width: 0; margin: 0; padding: 0; border: 0; }.format-options legend { width: 100%; }.format-options label { position: relative; flex: 1; }.format-options input { position: absolute; opacity: 0; }.format-options span { display: block; padding: 10px 8px; border: 1px solid var(--line); border-radius: 6px; color: var(--muted); background: var(--surface); text-align: center; font-size: 11px; }.format-options input:checked + span { border-color: var(--accent); color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, var(--surface)); }
.generate-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }.primary-button, .secondary-button { min-height: 42px; border: 1px solid var(--accent); border-radius: 6px; font-size: 12px; font-weight: 700; }.primary-button { color: var(--bg); background: var(--accent); }.primary-button:hover { background: var(--accent-strong); }.secondary-button { color: var(--accent); background: transparent; }.secondary-button:hover { background: color-mix(in srgb, var(--accent) 8%, transparent); }
.results-panel { padding: 27px 28px 30px; }.results-toolbar { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 18px; }.results-toolbar .eyebrow { margin-bottom: 5px; }.results-toolbar h2 { margin: 0; font-size: 24px; }.results-toolbar h2 small { margin-left: 7px; color: var(--faint); font-family: var(--mono); font-size: 11px; font-weight: 400; }.toolbar-actions { display: flex; gap: 8px; }.toolbar-actions button { padding: 8px 11px; border: 1px solid var(--line); border-radius: 5px; color: var(--muted); background: transparent; font-size: 11px; }.toolbar-actions button:hover { border-color: var(--accent); color: var(--accent); }
.uuid-list { display: grid; gap: 7px; max-height: 455px; margin: 0; padding: 0; overflow-y: auto; list-style: none; scrollbar-color: var(--faint) transparent; }.uuid-list li { display: grid; grid-template-columns: 31px minmax(0, 1fr) auto; gap: 11px; align-items: center; min-height: 46px; padding: 7px 9px 7px 13px; border: 1px solid var(--line); border-radius: 6px; background: color-mix(in srgb, var(--surface-2) 72%, transparent); }.uuid-list li > span { color: var(--faint); font-family: var(--mono); font-size: 10px; }.uuid-list code { overflow: hidden; color: var(--text); font-family: var(--mono); font-size: 14px; text-overflow: ellipsis; white-space: nowrap; }.uuid-list button { padding: 7px 10px; border: 0; border-radius: 4px; color: var(--accent); background: color-mix(in srgb, var(--accent) 9%, transparent); font-size: 11px; }.uuid-list button:hover { background: color-mix(in srgb, var(--accent) 16%, transparent); }
.info-section { display: grid; grid-template-columns: repeat(3, 1fr); gap: 42px; margin-top: 70px; padding: 35px 0 45px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }.info-section span { color: var(--accent); font-family: var(--mono); font-size: 11px; }.info-section h3 { margin: 10px 0 7px; font-size: 15px; }.info-section p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.75; }.info-section code { color: var(--violet); }
footer { display: flex; justify-content: space-between; padding: 26px 0 35px; color: var(--faint); font-family: var(--mono); font-size: 10px; }
.toast { position: fixed; z-index: 5; right: 24px; bottom: 24px; padding: 11px 15px; border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent); border-radius: 6px; color: var(--accent); background: var(--surface); box-shadow: 0 12px 35px var(--shadow); font-size: 12px; opacity: 0; transform: translateY(10px); pointer-events: none; transition: .2s ease; }.toast.show { opacity: 1; transform: translateY(0); }
@media (max-width: 860px) { .hero { grid-template-columns: 1fr; }.hero-code { display: none; }.controls { grid-template-columns: 1fr 1fr; }.generate-actions { grid-column: 1 / -1; }.info-section { gap: 24px; } }
@media (max-width: 580px) { .shell { width: min(100% - 26px, 1120px); }.topbar { height: 76px; }.privacy-badge { display: none; }.hero { padding: 51px 0 37px; }.hero h1 { font-size: 43px; }.hero p:not(.eyebrow) { font-size: 14px; }.controls { grid-template-columns: 1fr; gap: 22px; padding: 20px; }.generate-actions { grid-column: auto; }.results-panel { padding: 21px 16px 24px; }.results-toolbar { align-items: start; }.toolbar-actions { flex-direction: column; }.uuid-list code { font-size: 11px; }.uuid-list li { grid-template-columns: 23px minmax(0, 1fr) auto; gap: 6px; }.info-section { grid-template-columns: 1fr; }.top-actions { gap: 8px; } footer { flex-direction: column; gap: 7px; } }