/* ==========================================================
   shared.css v2 — Browser Lab
   Conservative shared layer for the HTML tools collection.
   Existing per-tool styles keep precedence where more specific.
   ========================================================== */

:root {
  --font-sans: 'IBM Plex Sans', 'Segoe UI', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;

  --page-pad: clamp(1rem, 4vw, 3.5rem);
  --content-gap: 10px;
  --tap-size: 42px;

  --accent: #4af0b0;
  --accent-dim: rgba(74,240,176,0.10);
  --accent-border: rgba(74,240,176,0.28);
}

:root, [data-theme="dark"] {
  --bg: #0b0d10;
  --bg2: #111418;
  --bg3: #181c22;
  --bg4: #1e232b;
  --border: #232830;
  --border2: #2c333e;
  --text: #dde2ea;
  --text2: #8f9aaa;
  --text3: #5c6878;
  --shadow: rgba(0,0,0,0.5);
  color-scheme: dark;
}

[data-theme="light"] {
  --bg: #f4f5f7;
  --bg2: #ffffff;
  --bg3: #eef0f3;
  --bg4: #e5e8ec;
  --border: #d8dce3;
  --border2: #c4c9d4;
  --text: #1a1e26;
  --text2: #5a6272;
  --text3: #9aa0ad;
  --shadow: rgba(0,0,0,0.10);
  color-scheme: light;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --bg: #f4f5f7;
    --bg2: #ffffff;
    --bg3: #eef0f3;
    --bg4: #e5e8ec;
    --border: #d8dce3;
    --border2: #c4c9d4;
    --text: #1a1e26;
    --text2: #5a6272;
    --text3: #9aa0ad;
    --shadow: rgba(0,0,0,0.10);
    color-scheme: light;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { font-size: 15px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-wrap: anywhere;
}

img, video, svg { max-width: 100%; }
img, video { height: auto; }
canvas { max-width: 100%; }
button, input, textarea, select { font: inherit; }
button, a, input, textarea, select { -webkit-tap-highlight-color: transparent; }

.tool-page {
  width: min(100%, 1100px);
  padding: 2rem var(--page-pad) 4rem;
  margin: 0 auto;
}

.tool-header { margin-bottom: 2rem; padding-right: 5rem; }
.tool-header .back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 32px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text3);
  text-decoration: none;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  transition: color 0.15s;
}
.tool-header .back:hover { color: var(--text2); }
.tool-header h1 {
  margin: 0 0 0.2rem;
  color: var(--text);
  font-size: clamp(1.35rem, 4vw, 1.7rem);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.03em;
}
.tool-header p {
  margin: 0;
  max-width: 76ch;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text3);
}

.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.card + .card { margin-top: var(--content-gap); }

.field-label {
  display: block;
  margin-bottom: 6px;
  color: var(--text3);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

input[type="text"], input[type="number"], input[type="search"], input[type="url"],
input[type="email"], input[type="password"], textarea, select {
  width: 100%;
  max-width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:focus-visible, textarea:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-dim);
}
input:focus, textarea:focus, select:focus { border-color: var(--accent); }
input::placeholder, textarea::placeholder { color: var(--text3); }

.input-calc {
  width: 100%;
  max-width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  outline: none;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 500;
  padding: 6px 10px;
  line-height: 1.4;
  color: var(--input-color, var(--text));
  caret-color: var(--input-color, var(--accent));
  transition: border-color 0.15s, box-shadow 0.15s;
}
.input-calc:focus {
  border-color: var(--input-color, var(--accent));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--input-color, var(--accent)) 12%, transparent);
}
.input-calc.error { color: #f06060; border-color: #f06060; }

.unit-select {
  width: auto;
  max-width: 100%;
  flex: none;
  padding: 6px 10px;
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  outline: none;
  cursor: pointer;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: transform 0.12s, filter 0.12s, background 0.12s, color 0.12s, border-color 0.12s;
  text-decoration: none;
  touch-action: manipulation;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--accent); color: #0b0d10; border-color: var(--accent); }
.btn-primary:hover { filter: brightness(1.1); }
.btn-secondary { background: var(--bg3); color: var(--text2); border-color: var(--border2); }
.btn-secondary:hover { color: var(--text); background: var(--bg4); }
.btn-ghost { background: none; color: var(--text3); }
.btn-ghost:hover { color: var(--text2); background: var(--bg3); }

.result-value { font-family: var(--font-mono); font-size: 1.4rem; font-weight: 700; color: var(--accent); line-height: 1.3; word-break: break-word; }
.result-label { margin-top: 4px; color: var(--text3); font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.08em; text-transform: uppercase; }
.badge { display:inline-block; padding:2px 7px; border:1px solid var(--accent-border); border-radius:4px; background:var(--accent-dim); color:var(--accent); font-family:var(--font-mono); font-size:.6rem; font-weight:700; letter-spacing:.08em; text-transform:uppercase; }

.grid-2 { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:var(--content-gap); }
.grid-3 { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:var(--content-gap); }
.grid-4 { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:var(--content-gap); }

.theme-toggle {
  position: fixed;
  top: max(1rem, env(safe-area-inset-top));
  right: max(1rem, env(safe-area-inset-right));
  z-index: 999;
  min-height: 34px;
  background: color-mix(in srgb, var(--bg2) 92%, transparent);
  border: 1px solid var(--border2);
  border-radius: 8px;
  padding: 6px 10px;
  color: var(--text2);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  backdrop-filter: blur(10px);
  touch-action: manipulation;
}
.theme-toggle:hover { color: var(--text); }

hr.divider { border:0; border-top:1px solid var(--border); margin:1rem 0; }
.mono { font-family:var(--font-mono); }
.text2 { color:var(--text2); }
.text3 { color:var(--text3); }
.accent { color:var(--accent); }
.gap { gap:var(--content-gap); }
.flex { display:flex; }
.flex-col { display:flex; flex-direction:column; }
.items-center { align-items:center; }
.justify-between { justify-content:space-between; }
.w-full { width:100%; }
.mt-1 { margin-top:.5rem; }
.mt-2 { margin-top:1rem; }
.mt-3 { margin-top:1.5rem; }

.toast {
  position:fixed;
  left:50%;
  bottom:max(1.5rem, env(safe-area-inset-bottom));
  z-index:1200;
  max-width:calc(100vw - 2rem);
  transform:translateX(-50%) translateY(60px);
  padding:8px 18px;
  background:var(--bg2);
  border:1px solid var(--border2);
  border-radius:8px;
  color:var(--accent);
  font-family:var(--font-mono);
  font-size:.78rem;
  opacity:0;
  pointer-events:none;
  white-space:normal;
  text-align:center;
  box-shadow:0 4px 20px var(--shadow);
  transition:opacity .2s ease, transform .2s ease;
}
.toast.show { opacity:1; transform:translateX(-50%) translateY(0); }

/* Optional common source panel. It appears only if site.js creates it. */
.lab-source { margin-top:2rem; border:1px solid var(--border); border-radius:var(--radius-lg); background:var(--bg2); overflow:hidden; }
.lab-source > summary { list-style:none; display:flex; align-items:center; gap:8px; min-height:44px; padding:10px 14px; cursor:pointer; color:var(--text2); font:600 .72rem/1.3 var(--font-mono); user-select:none; }
.lab-source > summary::-webkit-details-marker { display:none; }
.lab-source > summary::before { content:'›'; color:var(--accent); font-size:1rem; transition:transform .15s; }
.lab-source[open] > summary::before { transform:rotate(90deg); }
.lab-source__bar { display:flex; align-items:center; justify-content:space-between; gap:8px; padding:7px 10px; border-top:1px solid var(--border); border-bottom:1px solid var(--border); background:var(--bg3); }
.lab-source__label { color:var(--text3); font:600 .62rem/1 var(--font-mono); text-transform:uppercase; letter-spacing:.08em; }
.lab-source__copy { min-height:32px; padding:5px 9px; border:1px solid var(--border2); border-radius:var(--radius-sm); background:var(--bg2); color:var(--text2); font:500 .66rem/1 var(--font-mono); cursor:pointer; }
.lab-source__copy:hover { color:var(--text); }
.lab-source pre { margin:0; max-height:min(55vh,520px); overflow:auto; padding:14px 16px; background:#090b0e; color:#cbd3df; font:400 .72rem/1.65 var(--font-mono); tab-size:2; white-space:pre; }
[data-theme='light'] .lab-source pre { background:#f7f8fa; color:#29313d; }

@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns:repeat(2,minmax(0,1fr)); }
}

@media (max-width: 600px) {
  :root { --page-pad: 1rem; --tap-size: 44px; }
  .tool-page { padding-top:1.1rem; padding-bottom:calc(2.5rem + env(safe-area-inset-bottom)); }
  .tool-header { margin-bottom:1.35rem; padding-right:4.2rem; }
  .tool-header .back { margin-bottom:.65rem; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns:1fr; }
  .theme-toggle { top:max(.65rem, env(safe-area-inset-top)); right:max(.65rem, env(safe-area-inset-right)); }
  .btn { min-height:var(--tap-size); }
  input[type="text"], input[type="number"], input[type="search"], input[type="url"], input[type="email"], input[type="password"], select { min-height:var(--tap-size); }
  input[type="range"] { min-height:var(--tap-size); }
  .lab-source pre { font-size:.68rem; }
}

@media (pointer: coarse) {
  .btn, .theme-toggle, .lab-source__copy { min-height:var(--tap-size); }
  select, input[type="checkbox"], input[type="radio"], input[type="range"] { cursor:pointer; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior:auto !important;
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
}


/* ==========================================================
   PrismJS integration — local build, Coy theme.
   Prism handles syntax colors, line numbers, language label,
   toolbar and copy-to-clipboard.
   ========================================================== */
.lab-source {
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg2);
  overflow: hidden;
}
.lab-source > summary {
  min-height: 46px;
  display: flex;
  align-items: center;
  padding: 10px 14px;
  cursor: pointer;
  user-select: none;
  color: var(--text2);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.lab-source > summary:hover { color: var(--text); }
.lab-source > summary::marker { color: var(--text3); }

.lab-source__content {
  padding: 0 12px 12px;
}
.lab-source .code-toolbar {
  font-size: 0.86rem;
}
.lab-source pre[class*="language-"] {
  margin: 0;
  max-height: min(68vh, 720px);
  border-radius: var(--radius);
}
.lab-source pre[class*="language-"] > code {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  line-height: 1.65;
}
.lab-source div.code-toolbar > .toolbar {
  opacity: 1;
  top: .45rem;
  right: .45rem;
}
.lab-source div.code-toolbar > .toolbar > .toolbar-item > button,
.lab-source div.code-toolbar > .toolbar > .toolbar-item > span {
  border: 1px solid rgba(0,0,0,.10);
  box-shadow: none;
  background: rgba(255,255,255,.86);
  color: #4c5562;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  border-radius: 5px;
  padding: 4px 7px;
}
.lab-source div.code-toolbar > .toolbar > .toolbar-item > button:hover {
  background: #fff;
  color: #111;
}

@media (max-width: 600px) {
  .lab-source__content { padding: 0 6px 6px; }
  .lab-source pre[class*="language-"] > code { font-size: 0.70rem; }
}


/* ==========================================================
   Compact utility actions for editable fields
   ========================================================== */
.edit-actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 8px;
  margin: -2px 0 10px;
}
.clear-btn {
  min-height: 36px;
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  background: var(--bg2);
  color: var(--text2);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 7px 10px;
  cursor: pointer;
  transition: border-color .12s, color .12s, background .12s;
}
.clear-btn:hover {
  color: var(--text);
  border-color: var(--border3);
  background: var(--bg3);
}
@media (pointer: coarse) {
  .clear-btn { min-height: 44px; padding-inline: 13px; }
}


/* Mini Unelte — provenance / about note */
.tool-about-note{width:min(calc(100% - (2 * var(--page-pad))),1100px);margin:22px auto 8px;padding:14px 16px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg2);color:var(--text2);font-size:13px;line-height:1.55}
.tool-about-note strong{color:var(--text);font-weight:650}
.tool-about-note .tool-about-title{display:block;margin-bottom:4px;font-size:13px;letter-spacing:.01em}