/* ============================================================
   Javelin Labs Utilities — design tokens & shared components
   Dark-first glass system. macOS/Liquid Glass inspired.
   ============================================================ */

:root{
  color-scheme: light;
  --bg: #EEF1F7;
  --bg-deep: #DCE2EE;
  --panel: rgba(255,255,255,.55);
  --panel-edge: rgba(10,20,40,.10);
  --panel-highlight: rgba(255,255,255,.85);
  --ink: #10131A;
  --mist: #565B6E;
  --mist-dim: #7B7F92;
  --accent: #0247FE;
  --accent-glow: rgba(2,71,254,.14);
  --accent-tint: #3D63FF;
  --track: rgba(10,20,40,.12);
  --field-bg: rgba(255,255,255,.6);
  --field-edge: rgba(10,20,40,.14);
  --qr-tile: #ffffff;
  --qr-module: #0B1020;
  --shadow-ambient: rgba(20,30,60,.14);
  --good: #1E9E5A;
  --warn: #C77C11;
  --bad: #D6455A;

  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    color-scheme: dark;
    --bg: #090B10;
    --bg-deep: #04050A;
    --panel: rgba(255,255,255,.07);
    --panel-edge: rgba(255,255,255,.14);
    --panel-highlight: rgba(255,255,255,.35);
    --ink: #F4F6FA;
    --mist: #9BA3B4;
    --mist-dim: #6C7386;
    --accent: #0247FE;
    --accent-glow: rgba(2,71,254,.22);
    --accent-tint: #5C82FF;
    --track: rgba(255,255,255,.14);
    --field-bg: rgba(255,255,255,.05);
    --field-edge: rgba(255,255,255,.14);
    --qr-tile: #F4F6FA;
    --qr-module: #0B1020;
    --shadow-ambient: rgba(0,0,0,.55);
    --good: #3DDC84;
    --warn: #F0A93B;
    --bad: #FF6B7A;
  }
}

:root[data-theme="dark"]{
  color-scheme: dark;
  --bg: #090B10;
  --bg-deep: #04050A;
  --panel: rgba(255,255,255,.07);
  --panel-edge: rgba(255,255,255,.14);
  --panel-highlight: rgba(255,255,255,.35);
  --ink: #F4F6FA;
  --mist: #9BA3B4;
  --mist-dim: #6C7386;
  --accent: #0247FE;
  --accent-glow: rgba(2,71,254,.22);
  --accent-tint: #5C82FF;
  --track: rgba(255,255,255,.14);
  --field-bg: rgba(255,255,255,.05);
  --field-edge: rgba(255,255,255,.14);
  --qr-tile: #F4F6FA;
  --qr-module: #0B1020;
  --shadow-ambient: rgba(0,0,0,.55);
  --good: #3DDC84;
  --warn: #F0A93B;
  --bad: #FF6B7A;
}

*{ box-sizing: border-box; }

html, body{
  margin: 0;
  height: 100%;
  background: var(--bg);
}

body{
  font-family: "Space Grotesk", "Avenir Next", "Segoe UI", sans-serif;
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

[hidden]{ display: none !important; }

::selection{ background: var(--accent-glow); color: var(--ink); }

:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

button{ font: inherit; color: inherit; }

a{ color: var(--accent); }

/* ---------- Scene / ambient background ---------- */

.scene{
  position: relative;
  min-height: 100%;
  isolation: isolate;
}

.ambient{
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60% 50% at 18% 12%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 70%),
    radial-gradient(50% 45% at 85% 20%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 65%),
    radial-gradient(70% 60% at 50% 100%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 70%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
  background-size: 180% 180%, 180% 180%, 180% 180%, 100% 100%;
  animation: drift 46s ease-in-out infinite alternate;
  filter: url(#liquid-glass);
}

@keyframes drift{
  0%   { background-position: 0% 0%, 100% 0%, 50% 100%, 0 0; }
  100% { background-position: 20% 15%, 80% 20%, 45% 85%, 0 0; }
}

@media (prefers-reduced-motion: reduce){
  .ambient{ animation: none; filter: none; }
}

@supports not (filter: url(#liquid-glass)){
  .ambient{ filter: none; }
}

@media (prefers-reduced-motion: no-preference){
  .menubar, .stage{ animation: sceneIn .7s ease-out both; }
}

@keyframes sceneIn{
  from{ opacity: 0; filter: blur(10px); }
  to{ opacity: 1; filter: blur(0); }
}

/* ---------- Menu bar ---------- */

.menubar{
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 10;
  display: flex;
  align-items: center;
  padding: .85rem clamp(1.1rem, 4vw, 2.5rem);
  padding-top: calc(.85rem + env(safe-area-inset-top, 0px));
  background: color-mix(in srgb, var(--bg) 55%, transparent);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid var(--panel-edge);
}

.brand{
  display: flex;
  align-items: center;
  gap: .55rem;
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  cursor: pointer;
}

.brand__mark{ display: block; flex-shrink: 0; }

.brand__name{
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .01em;
}

.stage{
  max-width: 1080px;
  margin: 0 auto;
  padding: clamp(2rem, 6vh, 4.5rem) clamp(1.1rem, 4vw, 2.5rem) clamp(3rem, 8vh, 5rem);
}

/* ---------- Overview ---------- */

.overview{
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(1.75rem, 4vh, 2.5rem);
}

.category{
  width: 100%;
  max-width: 880px;
}

.category__title{
  margin: 0 0 .9rem;
  font-size: .8125rem;
  font-weight: 600;
  color: var(--mist);
  letter-spacing: .01em;
}

.tiles{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: clamp(.85rem, 2vw, 1.25rem);
}

.tile{
  position: relative;
}

.tile__open{
  position: relative;
  isolation: isolate;
  overflow: hidden;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .7rem;
  text-align: center;
  padding: 1.65rem 1.1rem 1.35rem;
  border-radius: 24px;
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  box-shadow: 0 20px 50px -26px var(--shadow-ambient), 0 1px 0 0 var(--panel-highlight) inset;
  cursor: pointer;
  transition: transform .25s cubic-bezier(.16,1,.3,1), border-color .25s ease,
              box-shadow .25s ease, background .25s ease, backdrop-filter .25s ease;
}

.tile__open::before{
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, var(--panel-highlight), transparent 45%, transparent 60%, var(--panel-highlight) 130%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: .55;
}

.tile__open::after{
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: .035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.tile__sheen{
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  overflow: hidden;
}

.tile__sheen::before{
  content: "";
  position: absolute;
  top: 0;
  left: -60%;
  width: 45%;
  height: 100%;
  background: linear-gradient(105deg, transparent, var(--panel-highlight), transparent);
  transform: skewX(-15deg);
  opacity: 0;
}

.tile__open:hover, .tile__open:focus-visible{
  transform: translateY(-4px);
  background: color-mix(in srgb, var(--panel) 80%, var(--panel-highlight) 20%);
  backdrop-filter: blur(28px) saturate(200%);
  -webkit-backdrop-filter: blur(28px) saturate(200%);
  border-color: color-mix(in srgb, var(--accent) 55%, var(--panel-edge));
  box-shadow: 0 28px 60px -24px var(--shadow-ambient), 0 0 0 1px var(--accent-glow), 0 1px 0 0 var(--panel-highlight) inset;
}

@media (prefers-reduced-motion: no-preference){
  .tile__open:hover .tile__sheen::before, .tile__open:focus-visible .tile__sheen::before{
    animation: sweep .9s ease-out;
  }
}

.tile__pin{
  position: absolute;
  top: .55rem;
  right: .55rem;
  z-index: 2;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: 1px solid var(--field-edge);
  background: var(--field-bg);
  color: var(--mist-dim);
  cursor: pointer;
  padding: 0;
  opacity: .55;
  transition: opacity .15s ease, color .15s ease, border-color .15s ease, background .15s ease;
}

.tile__pin svg{ width: 12px; height: 12px; }

.tile:hover .tile__pin, .tile:focus-within .tile__pin{
  opacity: 1;
}

.tile__pin.is-pinned{
  opacity: 1;
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 55%, var(--field-edge));
  background: var(--accent-glow);
}

.tile__pin:disabled{
  opacity: 0;
  pointer-events: none;
}

@keyframes sweep{
  from{ left: -60%; opacity: .9; }
  to{ left: 115%; opacity: 0; }
}

.tile__icon{
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  color: var(--accent);
}

.tile__icon svg{ width: 22px; height: 22px; }

.tile__name{
  font-size: .9375rem;
  font-weight: 600;
}

.tile__tagline{
  font-size: .75rem;
  color: var(--mist);
  line-height: 1.4;
}

/* ---------- Detail (window shell) ---------- */

.detail{
  display: flex;
  justify-content: center;
}

.window{
  position: relative;
  isolation: isolate;
  width: 100%;
  max-width: 640px;
  border-radius: 28px;
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  backdrop-filter: blur(28px) saturate(180%);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
  box-shadow:
    0 24px 60px -20px var(--shadow-ambient),
    0 1px 0 0 var(--panel-highlight) inset;
  overflow: hidden;
}

.window--wide{ max-width: 760px; }
.window--narrow{ max-width: 460px; }

.window::before{
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(160deg, var(--panel-highlight), transparent 40%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: .6;
}

.window::after{
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: .035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.window__sheen{
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  overflow: hidden;
  z-index: 1;
}

.window__sheen::before{
  content: "";
  position: absolute;
  top: 0;
  left: -60%;
  width: 40%;
  height: 100%;
  background: linear-gradient(105deg, transparent, var(--panel-highlight), transparent);
  transform: skewX(-15deg);
  opacity: 0;
}

@media (prefers-reduced-motion: no-preference){
  .window.is-opening{
    animation: windowIn .34s cubic-bezier(.2,.9,.25,1);
  }
  .window.is-opening .window__sheen::before{
    animation: sweep .8s ease-out .1s;
  }
}

@keyframes windowIn{
  from{ opacity: 0; transform: scale(.95) translateY(10px); }
  to{ opacity: 1; transform: none; }
}

.window__bar{
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: 1.1rem 1.5rem;
  border-bottom: 1px solid var(--panel-edge);
}

.window__bar svg{ flex-shrink: 0; color: var(--accent); }

.window__bar h2{
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: .005em;
}

.back-btn{
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 999px;
  border: 1px solid var(--field-edge);
  background: var(--field-bg);
  color: var(--ink);
  cursor: pointer;
  padding: 0;
  transition: border-color .15s ease, color .15s ease;
}

.back-btn:hover{ border-color: var(--accent); color: var(--accent); }

.window__body{
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

.window__loading{
  padding: 2.5rem 1.5rem;
  text-align: center;
  color: var(--mist);
  font-size: .875rem;
}

/* ---------- Shared form primitives (used across tools) ---------- */

.field-label{
  display: block;
  font-size: .8125rem;
  color: var(--mist);
  margin-bottom: .45rem;
}

.text-field, .select-field, .textarea-field{
  width: 100%;
  font: inherit;
  font-size: .9375rem;
  color: var(--ink);
  background: var(--field-bg);
  border: 1px solid var(--field-edge);
  border-radius: 14px;
  padding: .7rem .85rem;
}

.textarea-field{
  resize: vertical;
  min-height: 6.5rem;
  line-height: 1.5;
}

.textarea-field.is-mono, .text-field.is-mono{
  font-family: "IBM Plex Mono", ui-monospace, "SF Mono", monospace;
}

.select-field{
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%239BA3B4' stroke-width='1.4' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .9rem center;
  padding-right: 2.2rem;
}

.text-field::placeholder, .textarea-field::placeholder{ color: var(--mist-dim); }

.text-field:focus-visible, .textarea-field:focus-visible, .select-field:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.field-hint{
  font-size: .75rem;
  color: var(--mist-dim);
  margin-top: .4rem;
  line-height: 1.4;
}

.field-error{
  font-size: .75rem;
  color: var(--bad);
  margin-top: .4rem;
  line-height: 1.4;
}

.btn{
  font: inherit;
  font-size: .875rem;
  font-weight: 500;
  border-radius: 999px;
  padding: .65rem 1.1rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}

.btn:active{ transform: scale(.97); }

.btn--ghost{
  background: var(--field-bg);
  border-color: var(--field-edge);
  color: var(--ink);
}

.btn--ghost:hover{ border-color: var(--accent); }

.btn--primary{
  background: var(--accent);
  color: #fff;
  padding: .8rem 1.1rem;
  font-size: .9375rem;
}

.btn--primary:hover{ background: var(--accent-tint); }

.btn--block{ width: 100%; }

.btn-row{
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

.readout{
  font-size: 1rem;
  word-break: break-all;
  background: var(--field-bg);
  border: 1px solid var(--field-edge);
  border-radius: 16px;
  padding: 1rem 1.1rem;
  line-height: 1.5;
}

.readout.is-mono{
  font-family: "IBM Plex Mono", ui-monospace, "SF Mono", monospace;
  font-size: clamp(1rem, 3.5vw, 1.25rem);
  letter-spacing: .01em;
}

.readout--block{
  white-space: pre-wrap;
  max-height: 16rem;
  overflow: auto;
}

.readout-row{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.meta-row{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.strength{
  display: flex;
  align-items: center;
  gap: .55rem;
}

.strength__bars{
  display: flex;
  gap: 3px;
}

.strength__bars i{
  display: block;
  width: 16px;
  height: 5px;
  border-radius: 3px;
  background: var(--track);
  font-style: normal;
}

.strength__bars i.is-filled{ background: var(--accent); }

.strength__label{
  font-size: .8125rem;
  color: var(--mist);
}

.control__row{
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  font-size: .8125rem;
  color: var(--mist);
  margin-bottom: .5rem;
}

.control__row span:last-child{
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

input[type="range"]{
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 3px;
  background: var(--track);
  outline-offset: 6px;
}

input[type="range"]::-webkit-slider-thumb{
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--field-bg);
  box-shadow: 0 0 0 1px var(--accent);
  cursor: pointer;
}

input[type="range"]::-moz-range-thumb{
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--field-bg);
  box-shadow: 0 0 0 1px var(--accent);
  cursor: pointer;
}

.toggles{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .6rem .9rem;
}

.toggle{
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .875rem;
  color: var(--mist);
  cursor: pointer;
}

.toggle input{
  appearance: none;
  -webkit-appearance: none;
  width: 17px;
  height: 17px;
  border-radius: 5px;
  border: 1.5px solid var(--field-edge);
  background: var(--field-bg);
  display: grid;
  place-content: center;
  flex-shrink: 0;
  cursor: pointer;
}

.toggle input::before{
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 2px;
  transform: scale(0);
  transition: transform .1s ease;
  background: var(--accent);
}

.toggle input:checked::before{ transform: scale(1); }
.toggle input:checked{ border-color: var(--accent); }

.toggle span{ color: var(--ink); }

/* Two-column layout, e.g. JSON Diff, Markdown preview */
.split{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 560px){
  .split{ grid-template-columns: 1fr; }
}

.pill{
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  font-size: .75rem;
  font-weight: 500;
  padding: .3rem .65rem;
  border-radius: 999px;
  background: var(--field-bg);
  border: 1px solid var(--field-edge);
  color: var(--mist);
}

.pill.is-good{ color: var(--good); border-color: color-mix(in srgb, var(--good) 45%, var(--field-edge)); }
.pill.is-warn{ color: var(--warn); border-color: color-mix(in srgb, var(--warn) 45%, var(--field-edge)); }
.pill.is-bad{ color: var(--bad); border-color: color-mix(in srgb, var(--bad) 45%, var(--field-edge)); }

.result-list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  max-height: 18rem;
  overflow: auto;
}

.result-list li{
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  font-size: .8125rem;
  background: var(--field-bg);
  border: 1px solid var(--field-edge);
  border-radius: 12px;
  padding: .6rem .75rem;
  line-height: 1.45;
}

.result-list code{
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: .8125rem;
}

.swatch{
  width: 100%;
  height: 4.5rem;
  border-radius: 16px;
  border: 1px solid var(--field-edge);
}

.form-grid{
  display: flex;
  flex-direction: column;
  gap: .9rem;
}

.form-fieldset{
  border: 1px solid var(--field-edge);
  border-radius: 16px;
  padding: .9rem;
  display: flex;
  flex-direction: column;
  gap: .7rem;
}

.form-fieldset__head{
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Reduced transparency / no backdrop-filter fallbacks */

@media (prefers-reduced-transparency: reduce){
  .menubar, .window, .tile{
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: var(--bg-deep);
  }
  .window::after, .tile::after{ display: none; }
}

@supports not (backdrop-filter: blur(1px)){
  .menubar, .window, .tile{ background: var(--bg-deep); }
}

/* ---------- Footer ---------- */

footer.credit{
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .4rem;
  text-align: center;
  font-size: .75rem;
  color: var(--mist-dim);
  padding-bottom: clamp(1.5rem, 4vh, 2.5rem);
}

footer.credit p{ margin: 0; }

.credit__by{
  font-size: .7rem;
  letter-spacing: .01em;
  opacity: .65;
}