/* ============================================================================
   Prism — liquid glass design system
   Tokens, the .glass primitive, the animated backdrop, and form controls.
   ==========================================================================*/

/* ---------------------------------------------------------------- tokens */
:root {
  color-scheme: light dark;

  --spectrum-1: #38bdf8;
  --spectrum-2: #a78bfa;
  --spectrum-3: #fb7185;
  --spectrum-4: #34d399;

  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 15px;
  --radius-sm: 10px;

  --ease-glide: cubic-bezier(.22, .68, .28, 1);
  --ease-spring: cubic-bezier(.34, 1.42, .48, 1);

  --font-ui: ui-sans-serif, -apple-system, "Segoe UI Variable Display", "Segoe UI",
             Inter, system-ui, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", "JetBrains Mono", Consolas, monospace;
}

/* Light — the default. Every colour is defined here, so a theme block only
   ever needs to *re*define one, never introduce one. */
:root {
  --canvas: #e8ecf6;
  --canvas-deep: #d7dcec;

  --ink-1: #0e1220;
  --ink-2: #414b66;
  --ink-3: #737e9c;

  --glass-fill: linear-gradient(160deg, rgba(255,255,255,.72), rgba(255,255,255,.42));
  --glass-fill-flat: rgba(255,255,255,.66);
  --glass-rim: linear-gradient(150deg,
      rgba(255,255,255,.95) 0%,
      rgba(255,255,255,.28) 26%,
      rgba(255,255,255,.06) 52%,
      rgba(255,255,255,.42) 100%);
  --glass-inner-top: rgba(255,255,255,.85);
  --glass-inner-bottom: rgba(255,255,255,.30);
  --glass-hairline: rgba(16,22,40,.09);
  --glass-shadow:
      0 1px 1px rgba(14,18,32,.05),
      0 8px 22px -8px rgba(14,18,32,.18),
      0 30px 60px -28px rgba(14,18,32,.28);

  --field: rgba(255,255,255,.55);
  --field-edge: rgba(16,22,40,.10);
  --track: rgba(16,22,40,.11);

  --ok: #0f9d6b;
  --warn: #b26a00;
  --bad: #d6455c;
  --blob-opacity: .50;
  --grain-opacity: .13;
}

/* Dark palette, written once and referenced by both triggers below. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --canvas: #070912;
    --canvas-deep: #04050b;

    --ink-1: #f2f5ff;
    --ink-2: #b3bcd8;
    --ink-3: #7c87a8;

    --glass-fill: linear-gradient(160deg, rgba(255,255,255,.11), rgba(255,255,255,.035));
    --glass-fill-flat: rgba(28,33,52,.72);
    --glass-rim: linear-gradient(150deg,
        rgba(255,255,255,.55) 0%,
        rgba(255,255,255,.12) 24%,
        rgba(255,255,255,.03) 52%,
        rgba(255,255,255,.22) 100%);
    --glass-inner-top: rgba(255,255,255,.30);
    --glass-inner-bottom: rgba(255,255,255,.07);
    --glass-hairline: rgba(255,255,255,.09);
    --glass-shadow:
        0 1px 1px rgba(0,0,0,.34),
        0 10px 26px -10px rgba(0,0,0,.62),
        0 34px 70px -30px rgba(0,0,0,.75);

    --field: rgba(255,255,255,.06);
    --field-edge: rgba(255,255,255,.11);
    --track: rgba(255,255,255,.13);

    --ok: #3ddba1;
    --warn: #f0b642;
    --bad: #ff7a8f;
    --blob-opacity: .46;
    --grain-opacity: .18;
  }
}

:root[data-theme="dark"] {
  --canvas: #070912;
  --canvas-deep: #04050b;

  --ink-1: #f2f5ff;
  --ink-2: #b3bcd8;
  --ink-3: #7c87a8;

  --glass-fill: linear-gradient(160deg, rgba(255,255,255,.11), rgba(255,255,255,.035));
  --glass-fill-flat: rgba(28,33,52,.72);
  --glass-rim: linear-gradient(150deg,
      rgba(255,255,255,.55) 0%,
      rgba(255,255,255,.12) 24%,
      rgba(255,255,255,.03) 52%,
      rgba(255,255,255,.22) 100%);
  --glass-inner-top: rgba(255,255,255,.30);
  --glass-inner-bottom: rgba(255,255,255,.07);
  --glass-hairline: rgba(255,255,255,.09);
  --glass-shadow:
      0 1px 1px rgba(0,0,0,.34),
      0 10px 26px -10px rgba(0,0,0,.62),
      0 34px 70px -30px rgba(0,0,0,.75);

  --field: rgba(255,255,255,.06);
  --field-edge: rgba(255,255,255,.11);
  --track: rgba(255,255,255,.13);

  --ok: #3ddba1;
  --warn: #f0b642;
  --bad: #ff7a8f;
  --blob-opacity: .46;
  --grain-opacity: .18;
}

/* ------------------------------------------------------------------ base */
* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink-1);
  background: var(--canvas);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4 { margin: 0; font-weight: 640; letter-spacing: -.014em; }
p { margin: 0; }
button, input, select { font: inherit; color: inherit; }

::selection { background: color-mix(in oklab, var(--spectrum-2) 34%, transparent); }

:where(button, [tabindex], input, select, summary, a):focus-visible {
  outline: 2px solid color-mix(in oklab, var(--spectrum-1) 78%, transparent);
  outline-offset: 2px;
}

/* -------------------------------------------------------------- backdrop */
.aurora {
  position: fixed;
  inset: -18vmax;
  z-index: -2;
  background: radial-gradient(120% 90% at 50% 0%, var(--canvas) 0%, var(--canvas-deep) 100%);
  overflow: hidden;
}

.aurora__blob {
  position: absolute;
  display: block;
  border-radius: 50%;
  /* A very wide blur is what makes the wash read as light rather than shapes. */
  filter: blur(160px) saturate(140%);
  opacity: var(--blob-opacity);
  will-change: transform;
}
.aurora__blob--a {
  width: 74vmax; height: 74vmax; top: -22vmax; left: -18vmax;
  background: radial-gradient(circle at 32% 32%, var(--spectrum-1), transparent 66%);
  animation: drift-a 34s var(--ease-glide) infinite alternate;
}
.aurora__blob--b {
  width: 68vmax; height: 68vmax; top: -6vmax; right: -20vmax;
  background: radial-gradient(circle at 62% 40%, var(--spectrum-2), transparent 66%);
  animation: drift-b 41s var(--ease-glide) infinite alternate;
}
.aurora__blob--c {
  width: 62vmax; height: 62vmax; bottom: -22vmax; left: 10vmax;
  background: radial-gradient(circle at 44% 58%, var(--spectrum-3), transparent 66%);
  animation: drift-c 37s var(--ease-glide) infinite alternate;
}
.aurora__blob--d {
  width: 56vmax; height: 56vmax; bottom: -14vmax; right: 2vmax;
  background: radial-gradient(circle at 50% 50%, var(--spectrum-4), transparent 68%);
  animation: drift-d 46s var(--ease-glide) infinite alternate;
}

@keyframes drift-a { to { transform: translate3d(14vmax, 9vmax, 0) scale(1.16); } }
@keyframes drift-b { to { transform: translate3d(-12vmax, 12vmax, 0) scale(1.1); } }
@keyframes drift-c { to { transform: translate3d(11vmax, -9vmax, 0) scale(1.2); } }
@keyframes drift-d { to { transform: translate3d(-9vmax, -12vmax, 0) scale(1.12); } }

/* Fine grain stops the large blurred gradients from banding. */
.grain {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: var(--grain-opacity);
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
}

/* --------------------------------------------------------- glass primitive
   Two stacked cues sell the material:
     1. the element itself — blurred, saturated backdrop plus a soft tint
     2. ::before — a 1px gradient rim, bright where light would catch an edge
*/
.glass {
  position: relative;
  isolation: isolate;
  border-radius: var(--radius-lg);
  background: var(--glass-fill);
  backdrop-filter: blur(26px) saturate(185%);
  -webkit-backdrop-filter: blur(26px) saturate(185%);
  box-shadow:
      inset 0 1px 0 0 var(--glass-inner-top),
      inset 0 -1px 0 0 var(--glass-inner-bottom),
      var(--glass-shadow);
}

.glass::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: inherit;
  padding: 1px;
  background: var(--glass-rim);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
          mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  pointer-events: none;
}

.glass > * { position: relative; z-index: 2; }

/* Thinner, brighter variant for bars and floating chrome. */
.glass--bar {
  backdrop-filter: blur(34px) saturate(210%);
  -webkit-backdrop-filter: blur(34px) saturate(210%);
}

/* Where a backdrop cannot be blurred, fall back to an opaque surface —
   layout and contrast must survive without the effect. */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .glass { background: var(--glass-fill-flat); }
}

@supports (corner-shape: squircle) {
  .glass { corner-shape: squircle; }
}

/* ---------------------------------------------------------------- buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid var(--field-edge);
  border-radius: 999px;
  background: var(--field);
  color: var(--ink-1);
  font-size: 14px;
  font-weight: 580;
  letter-spacing: -.008em;
  cursor: pointer;
  white-space: nowrap;
  transition: transform .18s var(--ease-spring), background .2s, border-color .2s, box-shadow .2s, opacity .2s;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.4);
}
.btn:hover:not(:disabled) { background: color-mix(in oklab, var(--field) 70%, white 18%); transform: translateY(-1px); }
.btn:active:not(:disabled) { transform: translateY(0) scale(.98); }
.btn:disabled { opacity: .42; cursor: not-allowed; }

.btn svg, .icon-btn svg {
  width: 17px; height: 17px; flex: none;
  fill: none; stroke: currentColor;
  stroke-width: 1.85; stroke-linecap: round; stroke-linejoin: round;
}

.btn--primary {
  border-color: transparent;
  color: #fff;
  background:
    linear-gradient(180deg, rgba(255,255,255,.30), rgba(255,255,255,0) 58%),
    linear-gradient(112deg, var(--spectrum-1), var(--spectrum-2) 52%, var(--spectrum-3));
  box-shadow:
      inset 0 1px 0 rgba(255,255,255,.55),
      0 6px 18px -6px color-mix(in oklab, var(--spectrum-2) 62%, transparent),
      0 2px 6px rgba(0,0,0,.16);
}
.btn--primary:hover:not(:disabled) { filter: saturate(1.14) brightness(1.05); }

.btn--ghost { background: transparent; border-color: var(--glass-hairline); box-shadow: none; }
.btn--ghost:hover:not(:disabled) { background: var(--field); }

.icon-btn {
  display: grid;
  place-items: center;
  width: 36px; height: 36px;
  padding: 0;
  border: 1px solid var(--field-edge);
  border-radius: 50%;
  background: var(--field);
  cursor: pointer;
  transition: transform .18s var(--ease-spring), background .2s;
}
.icon-btn:hover { background: color-mix(in oklab, var(--field) 70%, white 20%); transform: translateY(-1px); }
.icon-btn:active { transform: scale(.94); }
.lang-btn { font: 700 11px/1 var(--font-sans); letter-spacing: .04em; }

/* --------------------------------------------------------------- segmented */
/* A grid, not a flex row: flex items refuse to shrink below their text, so a
   long label used to push the last segment out through the rounded edge. Here
   the track decides the column count and the segments always fit inside it. */
.segmented {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(64px, 1fr));
  gap: 3px;
  padding: 3px;
  border: 1px solid var(--field-edge);
  border-radius: 17px;
  background: var(--track);
}
.segmented button {
  min-width: 0;
  padding: 7px 6px;
  border: 0;
  border-radius: 14px;
  background: transparent;
  color: var(--ink-2);
  font-size: 12.5px;
  font-weight: 570;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color .2s, background .25s var(--ease-glide), box-shadow .25s;
}
.segmented button:hover:not(:disabled) { color: var(--ink-1); }
.segmented button[aria-pressed="true"] {
  color: var(--ink-1);
  background: var(--glass-fill-flat);
  box-shadow: 0 1px 2px rgba(0,0,0,.14), inset 0 1px 0 rgba(255,255,255,.55);
}
@supports (corner-shape: squircle) {
  .segmented, .segmented button { corner-shape: squircle; }
}
.segmented button:disabled { opacity: .32; cursor: not-allowed; }

/* ------------------------------------------------------------------ pills */
.pill-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(86px, 1fr)); gap: 7px; }

.pill {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1px;
  padding: 9px 11px;
  border: 1px solid var(--field-edge);
  border-radius: var(--radius-md);
  background: var(--field);
  color: inherit;
  cursor: pointer;
  text-align: left;
  transition: transform .18s var(--ease-spring), border-color .2s, background .2s, box-shadow .2s;
}
.pill:hover { transform: translateY(-1px); background: color-mix(in oklab, var(--field) 68%, white 20%); }
.pill__name { font-size: 13.5px; font-weight: 620; letter-spacing: -.01em; }
.pill__meta { font-size: 10.5px; color: var(--ink-3); letter-spacing: .01em; }
.pill[aria-pressed="true"] {
  border-color: transparent;
  color: #fff;
  background:
    linear-gradient(180deg, rgba(255,255,255,.26), rgba(255,255,255,0) 60%),
    linear-gradient(122deg, var(--spectrum-1), var(--spectrum-2));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.5), 0 5px 14px -6px color-mix(in oklab, var(--spectrum-2) 60%, transparent);
}
.pill[aria-pressed="true"] .pill__meta { color: rgba(255,255,255,.85); }

/* ----------------------------------------------------------------- fields */
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }

.field__label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-2);
}
.field__value { font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-3); font-weight: 500; }

select.input, input.input {
  width: 100%;
  min-width: 0;
  padding: 9px 12px;
  border: 1px solid var(--field-edge);
  border-radius: var(--radius-sm);
  background: var(--field);
  font-size: 13.5px;
  transition: border-color .2s, background .2s;
}
select.input {
  appearance: none;
  padding-right: 30px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M2.5 4.5 6 8l3.5-3.5' fill='none' stroke='%23888' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 12px;
  cursor: pointer;
}
select.input option { background: var(--canvas); color: var(--ink-1); }
.input:hover { border-color: color-mix(in oklab, var(--spectrum-1) 40%, var(--field-edge)); }

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 20px;
  background: transparent;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 999px;
  background:
    linear-gradient(90deg, var(--spectrum-1), var(--spectrum-2)) 0 / var(--fill, 50%) 100% no-repeat,
    var(--track);
}
input[type="range"]::-moz-range-track { height: 6px; border-radius: 999px; background: var(--track); }
input[type="range"]::-moz-range-progress { height: 6px; border-radius: 999px; background: var(--spectrum-2); }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 17px; height: 17px;
  margin-top: -5.5px;
  border: 0;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,.32), 0 0 0 1px rgba(0,0,0,.06);
  transition: transform .16s var(--ease-spring);
}
input[type="range"]::-moz-range-thumb {
  width: 17px; height: 17px; border: 0; border-radius: 50%; background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,.32);
}
input[type="range"]:active::-webkit-slider-thumb { transform: scale(1.18); }

/* switch */
.switch { display: flex; align-items: center; gap: 10px; cursor: pointer; user-select: none; }
.switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.switch__track {
  position: relative;
  width: 40px; height: 23px;
  flex: none;
  border-radius: 999px;
  background: var(--track);
  border: 1px solid var(--field-edge);
  transition: background .25s var(--ease-glide);
}
.switch__track::after {
  content: "";
  position: absolute;
  top: 2px; left: 2px;
  width: 17px; height: 17px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,.3);
  transition: transform .25s var(--ease-spring);
}
.switch input:checked + .switch__track {
  background: linear-gradient(112deg, var(--spectrum-1), var(--spectrum-2));
  border-color: transparent;
}
.switch input:checked + .switch__track::after { transform: translateX(17px); }
.switch input:focus-visible + .switch__track { outline: 2px solid var(--spectrum-1); outline-offset: 2px; }
.switch__text { font-size: 13px; font-weight: 550; }

/* ------------------------------------------------------------------ chips */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--field-edge);
  background: var(--field);
  font-size: 11.5px;
  font-weight: 560;
  color: var(--ink-2);
  white-space: nowrap;
}
.chip__dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ink-3); flex: none; }
.chip--ok   .chip__dot { background: var(--ok);   box-shadow: 0 0 7px var(--ok); }
.chip--warn .chip__dot { background: var(--warn); box-shadow: 0 0 7px var(--warn); }
.chip--bad  .chip__dot { background: var(--bad);  box-shadow: 0 0 7px var(--bad); }
.chip--accent {
  color: #fff;
  border-color: transparent;
  background: linear-gradient(112deg, var(--spectrum-1), var(--spectrum-2));
}

/* ----------------------------------------------------------- accessibility */
@media (prefers-reduced-motion: reduce) {
  .aurora__blob { animation: none; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}