/* ============================================================
   NAMEUPS TOOLS — Core Design System
   "Aurora Void" · deep indigo-black · iridescent prism signature
   Dark-only by intent. Pure CSS. No dependencies.
   ============================================================ */

/* ---- Tokens (defaults; admin Theme Studio overrides via :root) --- */
:root {
  /* Surfaces */
  --void:      #070A14;
  --void-2:    #0A0F1F;
  --panel:     #0D1426;

  /* Text */
  --text:      #EAF1FF;
  --text-2:    #9DB0D6;
  --text-3:    #5E6E96;

  /* Signature accents (Google-vibrant, Gemini gradient) */
  --accent:    #4C8DFF;
  --accent-hi: #86B2FF;
  --iris-1:    #4285F4;
  --iris-2:    #A142F4;
  --iris-3:    #FF5FA2;
  --iris-4:    #24C8DB;
  --gold:      #FBBC04;

  /* Literal Google brand colors (for multicolor accents + particles) */
  --g-blue:    #4285F4;
  --g-red:     #EA4335;
  --g-yellow:  #FBBC04;
  --g-green:   #34A853;
  --g-purple:  #A142F4;
  --g-pink:    #FF5FA2;
  --g-cyan:    #24C8DB;

  /* Semantic (Google) */
  --success:   #34A853;
  --warning:   #FBBC04;
  --danger:    #EA4335;

  /* Derived glass + borders */
  --glass:     rgba(255,255,255,.04);
  --glass-2:   rgba(255,255,255,.07);
  --hairline:  rgba(255,255,255,.09);
  --hairline-2:rgba(255,255,255,.16);
  --accent-dim:color-mix(in srgb, var(--accent) 18%, transparent);
  --iris-grad: linear-gradient(115deg, var(--iris-1), var(--iris-2) 36%, var(--iris-3) 64%, var(--iris-4));
  --rainbow:   linear-gradient(100deg, var(--g-blue), var(--g-purple) 28%, var(--g-pink) 50%, var(--g-red) 64%, var(--g-yellow) 80%, var(--g-green));
  --glow:      .72;

  /* Back-compat aliases (so existing tools keep working) */
  --brand:     var(--accent);
  --brand-hi:  var(--accent-hi);
  --brand-dim: var(--accent-dim);
  --gold-dim:  color-mix(in srgb, var(--gold) 12%, transparent);
  --surface:   var(--void-2);
  --card:      var(--panel);
  --card-hover:#13132450;
  --border:    var(--hairline);
  --border-md: var(--hairline-2);
  --border-hi: rgba(255,255,255,.22);
  --info:      var(--iris-3);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,.4);
  --shadow-md: 0 8px 30px rgba(0,0,0,.45);
  --shadow-lg: 0 24px 70px rgba(0,0,0,.55);
  --shadow-xl: 0 40px 120px rgba(0,0,0,.6);
  --glow-accent: 0 0 0 1px color-mix(in srgb,var(--accent) 40%,transparent),
                 0 8px 40px color-mix(in srgb,var(--accent) calc(var(--glow)*45%),transparent);

  /* Radii */
  --r-sm: 8px; --r-md: 12px; --r-lg: 18px; --r-xl: 26px; --r-pill: 9999px;

  /* Motion */
  --ease:     cubic-bezier(.4,0,.2,1);
  --ease-out: cubic-bezier(.16,1,.3,1);
  --spring:   cubic-bezier(.34,1.56,.64,1);
  --dur-fast: 140ms; --dur: 240ms; --dur-slow: 520ms;

  /* Fonts */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:    'Space Mono', ui-monospace, 'SF Mono', monospace;

  --maxw: 1200px;
}

/* ---- Reset ------------------------------------------------------- */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  min-height: 100vh;
  background: var(--void);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.65;
  letter-spacing: .1px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
::selection { background: color-mix(in srgb,var(--accent) 40%,transparent); color: #fff; }

/* ---- Ambient background layers ---------------------------------- *
 * body::before  = faint dot grid
 * body::after   = film grain
 * .fx-aurora    = slow-drifting iridescent blobs (markup in head)   */
body::before {
  content:''; position: fixed; inset: 0; z-index: -3; pointer-events: none;
  background-image:
    radial-gradient(circle at center, rgba(150,190,255,.6) .7px, transparent .8px);
  background-size: 32px 32px;
  opacity: .04;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 40%, transparent 100%);
}
body::after {
  content:''; position: fixed; inset: 0; z-index: 60; pointer-events: none;
  opacity: .08; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---- Animated particle/orb background (canvas, drawn by bg.js) --- */
.nt-bg {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  width: 100%; height: 100%;
}

/* ---- Two-tone ToolsoN wordmark ---------------------------------- */
.brand-name { font-weight: 600; letter-spacing: -.01em; }
.brand-name b {
  font-weight: 700;
  background: var(--iris-grad); background-size: 200% auto;
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  animation: nt-holo 8s linear infinite;
}

/* ---- Layout primitives ------------------------------------------ */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; position: relative; }
.eyebrow {
  font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 2.5px;
  text-transform: uppercase; color: var(--text-3);
}

/* ---- Typography scale ------------------------------------------- */
h1,h2,h3 { font-family: var(--font-display); font-weight: 600; line-height: 1.04; letter-spacing: -.02em; }
.display {
  font-size: clamp(40px, 7.5vw, 92px);
  font-weight: 600; line-height: .98; letter-spacing: -.035em;
}
.h2 { font-size: clamp(28px, 4vw, 46px); letter-spacing: -.03em; }
.lead { font-size: clamp(16px, 1.6vw, 19px); color: var(--text-2); line-height: 1.6; }

/* ---- Header ----------------------------------------------------- */
.site-header { position: sticky; top: 0; z-index: 100; padding: 14px 0; }
.nav-shell {
  display: flex; align-items: center; justify-content: space-between; gap: 18px;
  padding: 10px 12px 10px 18px;
  border-radius: var(--r-pill);
  background: color-mix(in srgb, var(--void-2) 62%, transparent);
  border: 1px solid var(--hairline);
  backdrop-filter: blur(22px) saturate(160%);
  -webkit-backdrop-filter: blur(22px) saturate(160%);
  box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255,255,255,.05);
}
.brand { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand-mark { width: 30px; height: 30px; border-radius: 9px; flex-shrink: 0; }
.brand-name { font-family: var(--font-display); font-weight: 600; font-size: 16.5px; letter-spacing: -.01em; }
.brand-name b { font-weight: 600; }
.top-nav { display: flex; align-items: center; gap: 4px; }
.top-nav a {
  padding: 8px 14px; border-radius: var(--r-pill); font-size: 13.5px; font-weight: 500;
  color: var(--text-2); transition: color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.top-nav a:hover { color: var(--text); background: var(--glass); }
.nav-cta {
  display: inline-flex; align-items: center; gap: 7px; padding: 9px 16px;
  border-radius: var(--r-pill); font-size: 13px; font-weight: 600; color: var(--text);
  background: var(--glass-2); border: 1px solid var(--hairline-2);
  transition: all var(--dur-fast) var(--ease);
}
.nav-cta:hover { border-color: color-mix(in srgb,var(--accent) 60%,transparent); box-shadow: var(--glow-accent); }
.nav-cta .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--success); box-shadow: 0 0 8px var(--success); }

/* ---- Hero ------------------------------------------------------- */
.hero { padding: 70px 0 48px; text-align: center; position: relative; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px; margin-bottom: 28px;
  padding: 7px 14px 7px 12px; border-radius: var(--r-pill);
  background: var(--glass); border: 1px solid var(--hairline);
}
.hero-eyebrow .pulse { width: 7px; height: 7px; border-radius: 50%; background: var(--accent-hi); }
.hero-eyebrow span { font-family: var(--font-mono); font-size: 11px; letter-spacing: 1.6px; text-transform: uppercase; color: var(--text-2); }
.hero h1 { margin: 0 auto 22px; max-width: 14ch; }
.hero .lead { max-width: 56ch; margin: 0 auto 40px; }

/* Search */
.search { max-width: 620px; margin: 0 auto 22px; position: relative; }
.search-field {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 18px; border-radius: var(--r-xl);
  background: color-mix(in srgb, var(--panel) 70%, transparent);
  border: 1px solid var(--hairline-2);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255,255,255,.04);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.search-field:focus-within { border-color: color-mix(in srgb,var(--accent) 55%,transparent); box-shadow: var(--glow-accent), var(--shadow-md); }
.search-field svg { width: 19px; height: 19px; color: var(--text-3); flex-shrink: 0; }
.search-field input { flex: 1; background: none; border: none; outline: none; font-size: 16px; }
.search-field input::placeholder { color: var(--text-3); }
.search-kbd {
  font-family: var(--font-mono); font-size: 11px; color: var(--text-3);
  padding: 3px 8px; border-radius: 7px; border: 1px solid var(--hairline-2); background: var(--glass);
}
.clear-btn { display: none; background: none; border: none; cursor: pointer; color: var(--text-3); padding: 2px; }
.clear-btn.visible { display: flex; }
.clear-btn:hover { color: var(--text); }

/* Chips */
.chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 30px; }
.chip {
  padding: 7px 15px; border-radius: var(--r-pill); font-size: 12.5px; font-weight: 500;
  color: var(--text-2); background: var(--glass); border: 1px solid var(--hairline);
  cursor: pointer; transition: all var(--dur-fast) var(--ease); white-space: nowrap;
}
.chip:hover { color: var(--text); border-color: var(--hairline-2); }
.chip.active { color: #fff; border-color: transparent; background: var(--iris-grad); box-shadow: 0 6px 22px color-mix(in srgb,var(--iris-2) 30%,transparent); }

/* Hero stat */
.hero-stat { display: inline-flex; align-items: baseline; gap: 10px; font-family: var(--font-mono); color: var(--text-3); font-size: 12.5px; letter-spacing: 1px; }
.hero-stat b { font-family: var(--font-display); font-size: 22px; color: var(--text); letter-spacing: -.02em; }

/* ---- Tools section ---------------------------------------------- */
#tools { padding-top: 32px; }
.tools-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 26px; }
.tools-head .eyebrow { display: flex; align-items: center; gap: 10px; }
.tools-head .count-pill { color: var(--accent-hi); }
.sort-select {
  background: var(--glass); border: 1px solid var(--hairline); color: var(--text-2);
  border-radius: var(--r-md); padding: 8px 12px; font-size: 13px; cursor: pointer; outline: none;
}
.tools-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

/* Tool card */
.tool-card {
  --mx: 50%; --my: 50%;
  position: relative; display: flex; flex-direction: column; gap: 14px;
  padding: 22px; min-height: 188px; border-radius: var(--r-lg);
  background: linear-gradient(180deg, var(--glass), rgba(255,255,255,.012));
  border: 1px solid var(--hairline);
  overflow: hidden; cursor: pointer;
  transition: transform var(--dur) var(--spring), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.tool-card:hover { border-color: var(--hairline-2); box-shadow: var(--shadow-lg); }
.card-icon {
  width: 46px; height: 46px; border-radius: 13px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 22px;
  background: radial-gradient(120% 120% at 30% 20%, color-mix(in srgb,var(--accent) 22%,transparent), transparent 70%);
  border: 1px solid var(--hairline-2);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08);
}
.card-body { display: flex; flex-direction: column; gap: 6px; flex: 1; }
.card-name { font-family: var(--font-display); font-weight: 600; font-size: 17px; letter-spacing: -.01em; }
.card-desc { color: var(--text-2); font-size: 13px; line-height: 1.55; }
.card-tags { display: flex; flex-wrap: wrap; gap: 5px; margin-top: auto; }
.card-tags .tag {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: .3px;
  padding: 3px 8px; border-radius: var(--r-pill); color: var(--text-3); border: 1px solid var(--hairline);
}
.card-arrow {
  position: absolute; top: 20px; right: 20px; width: 30px; height: 30px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; color: var(--text-2);
  background: var(--glass); border: 1px solid var(--hairline);
  opacity: 0; transform: translate(-4px,4px); transition: all var(--dur) var(--ease);
}
.tool-card:hover .card-arrow { opacity: 1; transform: translate(0,0); color: var(--accent-hi); border-color: color-mix(in srgb,var(--accent) 50%,transparent); }
.card-link { position: absolute; inset: 0; z-index: 3; }

/* Empty state */
.empty {
  grid-column: 1/-1; text-align: center; padding: 80px 20px; color: var(--text-3);
}
.empty b { display: block; font-family: var(--font-display); font-size: 20px; color: var(--text-2); margin-bottom: 8px; }

/* ---- Ethos / Free-forever seal ---------------------------------- */
.ethos-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.ethos h2 { margin-bottom: 18px; max-width: 14ch; }
.ethos p { color: var(--text-2); line-height: 1.8; margin-bottom: 18px; max-width: 52ch; }
.ethos p b { color: var(--text); }
.manifest { display: flex; flex-direction: column; gap: 14px; margin-top: 26px; }
.manifest-row { display: flex; gap: 13px; align-items: flex-start; }
.manifest-row .tick {
  width: 22px; height: 22px; border-radius: 7px; flex-shrink: 0; margin-top: 2px;
  display: flex; align-items: center; justify-content: center;
  background: color-mix(in srgb,var(--success) 14%,transparent); color: var(--success);
}
.manifest-row span { font-size: 14px; color: var(--text-2); }
.manifest-row span b { color: var(--text); }

.seal {
  position: relative; aspect-ratio: 1; max-width: 360px; margin: 0 auto;
  border-radius: var(--r-xl);
  background: radial-gradient(130% 130% at 50% 0%, var(--void-2), var(--void) 70%);
  border: 1px solid var(--hairline);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px;
  overflow: hidden;
}
.seal-badge {
  width: 116px; height: 116px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid color-mix(in srgb,var(--gold) 45%,transparent);
  background: radial-gradient(circle at 50% 35%, color-mix(in srgb,var(--gold) 16%,transparent), transparent 65%);
  color: var(--gold); font-family: var(--font-display); font-weight: 600; font-size: 13px; text-align: center; line-height: 1.2;
}
.seal-cost { font-family: var(--font-display); font-size: 64px; font-weight: 600; color: var(--gold); letter-spacing: -.03em; }
.seal-label { font-family: var(--font-mono); font-size: 11px; letter-spacing: 2px; text-transform: uppercase; color: var(--text-3); }

/* ---- Extend (add-a-tool) ---------------------------------------- */
.extend-card {
  border-radius: var(--r-xl); padding: 44px;
  background: linear-gradient(180deg, var(--glass), rgba(255,255,255,.01));
  border: 1px solid var(--hairline);
}
.extend-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.extend h2 { margin-bottom: 14px; }
.extend p { color: var(--text-2); margin-bottom: 22px; line-height: 1.7; }
.code-block {
  font-family: var(--font-mono); font-size: 12.5px; line-height: 1.7; color: var(--text-2);
  background: var(--void); border: 1px solid var(--hairline); border-radius: var(--r-md);
  padding: 18px 20px; overflow-x: auto; white-space: pre;
}
.code-block .k { color: var(--accent-hi); }
.code-block .s { color: var(--success); }
.code-block .c { color: var(--text-3); }

/* ---- Footer ----------------------------------------------------- */
.site-footer { border-top: 1px solid var(--hairline); padding: 40px 0; margin-top: 40px; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer-copy { font-family: var(--font-mono); font-size: 12px; color: var(--text-3); }
.footer-copy a { color: var(--text-2); }
.footer-links { display: flex; gap: 18px; }
.footer-links a { font-size: 13px; color: var(--text-3); transition: color var(--dur-fast) var(--ease); }
.footer-links a:hover { color: var(--text); }
.footer-build { font-family: var(--font-mono); font-size: 10.5px; color: color-mix(in srgb,var(--text-3) 55%,transparent); }

/* ============================================================
   SHARED TOOL COMPONENTS (used inside tools/*)
   ============================================================ */
.tool-page { padding: 40px 0 96px; }
.tool-header { margin-bottom: 34px; }
.back-link { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; color: var(--text-2); margin-bottom: 18px; transition: color var(--dur-fast) var(--ease); }
.back-link:hover { color: var(--text); }
.tool-header h1 { font-size: clamp(30px,4.5vw,44px); margin-bottom: 10px; }
.tool-desc { color: var(--text-2); font-size: 16px; max-width: 70ch; line-height: 1.6; }

.panel {
  background: linear-gradient(180deg, var(--glass), rgba(255,255,255,.012));
  border: 1px solid var(--hairline); border-radius: var(--r-lg); padding: 26px;
}
.panel + .panel { margin-top: 16px; }
.panel-title { font-family: var(--font-mono); font-size: 11px; font-weight: 700; letter-spacing: 1.4px; text-transform: uppercase; color: var(--text-3); margin-bottom: 18px; }

.field-group { display: flex; flex-direction: column; gap: 7px; margin-bottom: 16px; }
.field-group:last-child { margin-bottom: 0; }
.field-label { font-size: 13px; font-weight: 600; color: var(--text-2); }
.field-input {
  width: 100%; padding: 12px 15px; border-radius: var(--r-md);
  background: var(--void); border: 1px solid var(--hairline); font-size: 14.5px; outline: none;
  transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.field-input:focus { border-color: color-mix(in srgb,var(--accent) 55%,transparent); box-shadow: 0 0 0 3px var(--accent-dim); }
.field-input::placeholder { color: var(--text-3); }
textarea.field-input { resize: vertical; min-height: 110px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: var(--r-md); font-size: 14px; font-weight: 600;
  cursor: pointer; border: none; transition: transform var(--dur-fast) var(--spring), box-shadow var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.btn:active { transform: scale(.97); }
.btn-primary { color: #fff; background: linear-gradient(135deg, var(--accent), var(--iris-1)); }
.btn-primary:hover { box-shadow: var(--glow-accent); }
.btn-outline { background: var(--glass); border: 1px solid var(--hairline-2); color: var(--text-2); }
.btn-outline:hover { color: var(--text); border-color: var(--border-hi); }
.btn-gold { background: var(--gold-dim); border: 1px solid color-mix(in srgb,var(--gold) 50%,transparent); color: var(--gold); }
.btn-gold:hover { background: var(--gold); color: #1a1406; }
.btn-full { width: 100%; }
.btn-sm { padding: 8px 14px; font-size: 13px; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.divider { height: 1px; background: var(--hairline); margin: 22px 0; }

.tabs { display: flex; gap: 4px; padding: 5px; margin-bottom: 24px; border-radius: var(--r-lg); background: var(--glass); border: 1px solid var(--hairline); }
.tab-btn { flex: 1; padding: 10px 14px; border-radius: var(--r-md); border: none; background: transparent; color: var(--text-2); font-size: 13.5px; font-weight: 600; cursor: pointer; transition: all var(--dur-fast) var(--ease); }
.tab-btn.active { color: #fff; background: color-mix(in srgb,var(--accent) 20%,transparent); box-shadow: inset 0 0 0 1px color-mix(in srgb,var(--accent) 35%,transparent); }
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: nt-fade .35s var(--ease-out) both; }

.badge { display: inline-flex; align-items: center; padding: 3px 9px; border-radius: var(--r-pill); font-family: var(--font-mono); font-size: 10.5px; font-weight: 700; }
.badge-brand { background: var(--accent-dim); color: var(--accent-hi); }
.badge-gold  { background: var(--gold-dim); color: var(--gold); }
.badge-success { background: color-mix(in srgb,var(--success) 14%,transparent); color: var(--success); }

/* ---- Responsive ------------------------------------------------- */
@media (max-width: 1024px) {
  .tools-grid { grid-template-columns: repeat(2,1fr); }
  .ethos-grid, .extend-grid { grid-template-columns: 1fr; gap: 36px; }
}
@media (max-width: 680px) {
  .wrap { padding: 0 16px; }
  .section { padding: 64px 0; }
  .tools-grid { grid-template-columns: 1fr; }
  .top-nav { display: none; }
  .two-col { grid-template-columns: 1fr; }
  .hero { padding: 44px 0 32px; }
  .extend-card { padding: 26px; }
  .search-kbd { display: none; }
}

/* ---- Accessibility ---------------------------------------------- */
:focus-visible { outline: 2px solid var(--accent-hi); outline-offset: 3px; border-radius: 4px; }
@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .fx-aurora { animation: none !important; }
}

/* ============================================================
   ASSISTANT CHAT WIDGET
   ============================================================ */
.chat-fab {
  position: fixed; bottom: 26px; right: 26px; z-index: 200;
  width: 56px; height: 56px; border-radius: 50%; border: 1px solid var(--hairline-2);
  background: linear-gradient(135deg, var(--accent), var(--iris-1)); color: #fff;
  display: flex; align-items: center; justify-content: center; cursor: pointer;
  box-shadow: 0 10px 36px color-mix(in srgb,var(--accent) 50%,transparent);
  transition: transform var(--dur) var(--spring), box-shadow var(--dur) var(--ease);
}
.chat-fab:hover { transform: scale(1.07); }
.chat-fab:active { transform: scale(.95); }
.chat-fab svg { width: 23px; height: 23px; }

.chat-panel {
  position: fixed; bottom: 94px; right: 26px; z-index: 200;
  width: 372px; max-width: calc(100vw - 28px); max-height: 540px;
  display: flex; flex-direction: column; overflow: hidden;
  border-radius: var(--r-xl); border: 1px solid var(--hairline-2);
  background: color-mix(in srgb, var(--panel) 86%, transparent);
  backdrop-filter: blur(26px) saturate(160%); -webkit-backdrop-filter: blur(26px) saturate(160%);
  box-shadow: var(--shadow-xl);
  transform-origin: bottom right; transform: scale(.9) translateY(14px); opacity: 0; pointer-events: none;
  transition: transform var(--dur) var(--spring), opacity var(--dur) var(--ease);
}
.chat-panel.open { transform: none; opacity: 1; pointer-events: all; }
.chat-head { display: flex; align-items: center; justify-content: space-between; padding: 16px 18px; border-bottom: 1px solid var(--hairline); }
.chat-head-info { display: flex; align-items: center; gap: 11px; }
.chat-avatar { width: 34px; height: 34px; border-radius: 50%; display: flex; align-items: center; justify-content: center; background: var(--glass-2); border: 1px solid var(--hairline-2); }
.chat-head-name { font-family: var(--font-display); font-weight: 600; font-size: 14.5px; }
.chat-head-status { font-size: 11px; color: var(--success); }
.chat-close { width: 30px; height: 30px; border-radius: 50%; border: none; background: var(--glass); color: var(--text-2); cursor: pointer; display: flex; align-items: center; justify-content: center; }
.chat-close:hover { background: var(--glass-2); color: var(--text); }

.chat-msgs { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 10px; }
.chat-msgs::-webkit-scrollbar { width: 4px; }
.chat-msgs::-webkit-scrollbar-thumb { background: var(--hairline-2); border-radius: 2px; }
.msg { display: flex; }
.msg-bubble { padding: 11px 15px; border-radius: 16px; font-size: 13.5px; line-height: 1.55; max-width: 84%; }
.msg.bot .msg-bubble { background: var(--glass); border: 1px solid var(--hairline); border-bottom-left-radius: 5px; }
.msg.user { justify-content: flex-end; }
.msg.user .msg-bubble { background: linear-gradient(135deg, var(--accent), var(--iris-1)); color: #fff; border-bottom-right-radius: 5px; }
.msg-bubble a { color: var(--accent-hi); text-decoration: underline; }
.msg.user .msg-bubble a { color: rgba(255,255,255,.9); }

.chat-quick { display: flex; flex-wrap: wrap; gap: 6px; padding: 0 16px 12px; }
.quick-btn { padding: 6px 12px; border-radius: var(--r-pill); border: 1px solid var(--hairline); background: var(--glass); color: var(--text-2); font-size: 12px; cursor: pointer; transition: all var(--dur-fast) var(--ease); }
.quick-btn:hover { color: var(--accent-hi); border-color: color-mix(in srgb,var(--accent) 45%,transparent); }
.chat-input-row { display: flex; gap: 8px; padding: 12px 14px; border-top: 1px solid var(--hairline); }
.chat-input-row input { flex: 1; background: var(--void); border: 1px solid var(--hairline); border-radius: var(--r-pill); padding: 10px 15px; font-size: 13.5px; outline: none; transition: border-color var(--dur-fast) var(--ease); }
.chat-input-row input:focus { border-color: color-mix(in srgb,var(--accent) 50%,transparent); }
.chat-send { width: 38px; height: 38px; border-radius: 50%; border: none; background: linear-gradient(135deg, var(--accent), var(--iris-1)); color: #fff; cursor: pointer; display: flex; align-items: center; justify-content: center; flex-shrink: 0; transition: transform var(--dur-fast) var(--spring); }
.chat-send:hover { transform: scale(1.1); }
@media (max-width: 680px) { .chat-panel { right: 12px; bottom: 84px; } .chat-fab { right: 18px; bottom: 18px; } }

/* ── Tool-page footer ─────────────────────────────────────────── */
.tool-foot { margin-top: 64px; border-top: 1px solid var(--hairline); padding: 28px 0 40px; }
.tool-foot-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.tool-foot-copy { font-size: 13px; color: var(--text-3); }
.holo-mini { background: linear-gradient(120deg, var(--iris-1), var(--iris-3), var(--iris-4)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; font-weight: 600; }
.tool-foot-links { display: flex; gap: 18px; }
.tool-foot-links a { font-size: 13px; color: var(--text-3); transition: color var(--dur-fast) var(--ease); }
.tool-foot-links a:hover { color: var(--text); }
.tool-foot-build { font-family: var(--font-mono, monospace); font-size: 11px; color: var(--text-3); opacity: .7; letter-spacing: .5px; }
@media (max-width: 680px) { .tool-foot-inner { justify-content: flex-start; } }