/* ============================================================================
   VOLNARIS SECURITY — Design System
   Phase 1 prototype stylesheet.
   Structure:
     1. Design tokens (color, type, spacing) + themes
     2. Reset & base elements
     3. Layout primitives (container, section, grid)
     4. Typography utilities
     5. Components (nav, buttons, cards, badges, footer, forms…)
     6. Page-specific blocks (hero, timeline, services, industries)
     7. Motion, accessibility, responsive
   ========================================================================== */

/* ----------------------------------------------------------------------------
   1. DESIGN TOKENS
   Palette derived from the Volnaris logo: metallic silver + electric-blue/cyan
   accent on a deep graphite-navy ground.
   ---------------------------------------------------------------------------- */
:root {
  /* Brand accent — electric-blue "signal" (Volnaris Design System) */
  --accent: #2e8bff;            /* blue-500 — primary signal       */
  --accent-cyan: #4fd6ff;       /* cyan-400 — glow / edge light    */
  --accent-deep: #1c6fe6;       /* blue-600 — press                */
  --accent-grad: linear-gradient(135deg, var(--accent) 0%, var(--accent-cyan) 100%); /* grad-signal */

  /* Signal effects (DS): the brushed-steel bevel + electric edge-light */
  --bevel-top: inset 0 1px 0 rgba(255, 255, 255, 0.06);
  --grad-card: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0) 40%);
  --grad-deep: radial-gradient(1200px 600px at 50% -10%, rgba(46, 139, 255, 0.12), transparent 60%);
  --glow-text: 0 0 18px color-mix(in oklab, var(--accent-cyan) 55%, transparent);
  --glow-md: 0 0 28px -2px color-mix(in oklab, var(--accent-cyan) 40%, transparent);
  --border-glow: color-mix(in oklab, var(--accent) 55%, transparent);
  --dur-fast: 120ms;
  --on-accent: #ffffff;

  /* Typography (DS): Space Grotesk display · IBM Plex Sans body · JetBrains Mono labels */
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;

  /* Fluid type scale (clamp: min, preferred, max)
     Raised ~10% over the original scale — the previous body size read small
     on large screens. Body sizes lead; display sizes follow more gently so
     headings don't overwhelm the layout. */
  --fs-eyebrow: 0.86rem;
  --fs-sm: 1.02rem;
  --fs-base: 1.22rem;   /* ~19.5px — was 1.02rem (16.3px) originally */
  --fs-lg: 1.42rem;
  --fs-xl: clamp(1.55rem, 1.2rem + 1.3vw, 2.2rem);
  --fs-2xl: clamp(2.1rem, 1.5rem + 2.6vw, 3.3rem);
  --fs-3xl: clamp(2.8rem, 1.9rem + 4.2vw, 5.1rem);

  /* Spacing scale */
  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 4.5rem;
  --space-8: 6.5rem;

  /* Radii & structure (DS: md 10 · lg 16 · xl 24) */
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --maxw: 1200px;
  --maxw-narrow: 820px;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 0.5s;
}

/* DARK THEME (default) ------------------------------------------------------ */
:root,
[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0a0e1a;                /* navy-900 — base substrate       */
  --bg-void: #070a12;           /* navy-950 — deepest (logo bg)    */
  --surface: #0d1322;           /* surface-1 (elevated)            */
  --card: #111829;              /* surface-2 / card                */
  --card-hover: #182035;        /* navy-700-solid                  */
  --hairline: #243049;          /* border-default                  */
  --hairline-soft: #1c2740;     /* border-subtle                   */
  --text: #f5f8ff;              /* text-strong                     */
  --text-soft: #b6c1d6;         /* steel-200 — body                */
  --text-mute: #8a95ab;         /* steel-300 — muted               */
  --accent-on-surface: #4fa8ff; /* blue-400 — accent on dark       */
  --grid-line: rgba(46, 139, 255, 0.05);
  --glow: rgba(46, 139, 255, 0.16);
  --shadow: 0 24px 60px -16px rgba(0, 0, 0, 0.65);
  --logo-dark-display: block;
  --logo-light-display: none;
}

/* LIGHT THEME --------------------------------------------------------------- */
[data-theme="light"] {
  color-scheme: light;
  --bg: #f4f7fc;                /* steel-050                       */
  --bg-void: #e7ecf5;
  --surface: #ffffff;
  --card: #ffffff;
  --card-hover: #f4f7fc;
  --hairline: #d6deec;          /* steel-tinted border             */
  --hairline-soft: #e4eaf3;
  --text: #0a0e1a;              /* navy ink                        */
  --text-soft: #3a4256;         /* steel-500                       */
  --text-mute: #5c6678;         /* steel-400                       */
  --accent: #1c6fe6;            /* blue-600 — AA contrast on light */
  --accent-cyan: #2e8bff;       /* keep blue-weighted on light     */
  --accent-on-surface: #1c6fe6;
  --grid-line: rgba(28, 111, 230, 0.06);
  --glow: rgba(28, 111, 230, 0.12);
  --shadow: 0 22px 50px -22px rgba(10, 14, 26, 0.22);
  --logo-dark-display: none;
  --logo-light-display: block;
}

/* ----------------------------------------------------------------------------
   2. RESET & BASE
   ---------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  /* The page colour lives here so the fixed .site-bg layer (z-index:-1) can sit
     behind the content but still in front of the page's own backdrop. */
  background: var(--bg);
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.65;
  color: var(--text);
  background: transparent;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color 0.4s var(--ease), color 0.4s var(--ease);
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
ul { list-style: none; padding: 0; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text);
}

::selection { background: var(--accent); color: #fff; }

/* ----------------------------------------------------------------------------
   3. LAYOUT PRIMITIVES
   ---------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: clamp(1.2rem, 5vw, 2.5rem);
}
.container--narrow { max-width: var(--maxw-narrow); }

.section { padding-block: clamp(3.5rem, 8vw, var(--space-8)); }
.section--tight { padding-block: clamp(2.5rem, 5vw, var(--space-7)); }

.section-head { max-width: 720px; margin-bottom: var(--space-6); }
.section-head--center { margin-inline: auto; text-align: center; }

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

/* ----------------------------------------------------------------------------
   4. TYPOGRAPHY UTILITIES
   ---------------------------------------------------------------------------- */
/* DS eyebrow: mono, wide-tracked, prefixed with "//" like a code comment */
.eyebrow {
  /* Some eyebrows are real headings (pricing steps) — keep them from going bold. */
  font-weight: inherit;
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-on-surface);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.eyebrow::before {
  content: "//";
  color: var(--accent);
  font-weight: 600;
}
.eyebrow--center { justify-content: center; }

.display-xl { font-size: var(--fs-3xl); letter-spacing: -0.035em; }
.display-lg { font-size: var(--fs-2xl); }
.title { font-size: var(--fs-xl); }

.lead {
  font-size: var(--fs-lg);
  color: var(--text-soft);
  line-height: 1.7;
  max-width: 60ch;
}
.muted { color: var(--text-soft); }
.text-accent {
  color: var(--accent-on-surface);
  text-shadow: var(--glow-text);
}

/* ----------------------------------------------------------------------------
   5. COMPONENTS
   ---------------------------------------------------------------------------- */

/* --- Buttons --------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.96rem;
  letter-spacing: 0.01em;
  line-height: 1;
  border: 1px solid transparent;
  transition: transform var(--dur-fast, 120ms) var(--ease),
    filter 0.2s var(--ease), box-shadow 0.25s var(--ease),
    background-color 0.25s var(--ease), border-color 0.25s var(--ease);
  white-space: nowrap;
}
.btn:focus-visible { outline: 2px solid var(--accent-cyan); outline-offset: 3px; }
.btn .arrow { transition: transform 0.25s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }
/* Mechanical press — small translate + scale (DS) */
.btn:active { transform: translateY(1px) scale(0.99); }

.btn--primary {
  background: var(--accent-grad);
  color: var(--on-accent);
  box-shadow: 0 0 0 1px color-mix(in oklab, var(--accent) 55%, transparent),
    0 6px 22px -6px var(--glow), var(--bevel-top);
}
.btn--primary:hover { filter: brightness(1.08); }

.btn--ghost {
  background: var(--surface-2, transparent);
  background: transparent;
  color: var(--text);
  border-color: var(--hairline);
  box-shadow: var(--bevel-top);
}
.btn--ghost:hover {
  background: color-mix(in oklab, var(--accent) 8%, transparent);
  border-color: var(--border-glow, var(--accent));
  color: var(--accent-on-surface);
}

.btn--lg { padding: 1rem 1.9rem; font-size: 1.02rem; }

/* --- Navigation ------------------------------------------------------------ */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background-color 0.3s var(--ease), border-color 0.3s var(--ease),
    backdrop-filter 0.3s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--hairline);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}
.nav__logo img { height: 64px; width: auto; }
.logo-dark { display: var(--logo-dark-display); }
.logo-light { display: var(--logo-light-display); }

.nav__links {
  display: flex;
  align-items: center;
  gap: clamp(1.2rem, 2.5vw, 2.2rem);
}
.nav__link {
  font-size: 0.94rem;
  color: var(--text-soft);
  position: relative;
  padding-block: 0.4rem;
  transition: color 0.2s var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1.5px;
  background: var(--accent-grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav__link:hover,
.nav__link[aria-current="page"] { color: var(--text); }
.nav__link:hover::after,
.nav__link[aria-current="page"]::after { transform: scaleX(1); }

.nav__actions { display: flex; align-items: center; gap: var(--space-3); }

/* Theme toggle */
.theme-toggle {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: 10px;
  background: var(--card);
  border: 1px solid var(--hairline);
  color: var(--text-soft);
  transition: color 0.2s, border-color 0.2s, transform 0.2s;
}
.theme-toggle:hover { color: var(--accent-on-surface); border-color: var(--accent); }
.theme-toggle:focus-visible { outline: 2px solid var(--accent-cyan); outline-offset: 2px; }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="light"] .theme-toggle .icon-sun { display: block; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }

/* Hamburger */
.nav__toggle {
  display: none;
  width: 42px; height: 42px;
  border-radius: 10px;
  background: var(--card);
  border: 1px solid var(--hairline);
  color: var(--text);
  position: relative;
}
.nav__toggle span,
.nav__toggle span::before,
.nav__toggle span::after {
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  width: 18px; height: 2px;
  background: currentColor;
  border-radius: 2px;
  transform: translate(-50%, -50%);
  transition: transform 0.3s var(--ease), opacity 0.2s var(--ease);
}
.nav__toggle span::before { transform: translate(-50%, -7px); }
.nav__toggle span::after { transform: translate(-50%, 5px); }
.nav__toggle[aria-expanded="true"] span { background: transparent; }
.nav__toggle[aria-expanded="true"] span::before { transform: translate(-50%, -50%) rotate(45deg); top: 0; }
.nav__toggle[aria-expanded="true"] span::after { transform: translate(-50%, -50%) rotate(-45deg); top: 0; }

/* --- Cards ----------------------------------------------------------------- */
.card {
  background: var(--card);
  background-image: var(--grad-card);          /* top sheen — catches "light" */
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: var(--space-4);
  box-shadow: var(--shadow), var(--bevel-top); /* navy shadow + steel bevel    */
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease),
    box-shadow 0.35s var(--ease), background-color 0.35s var(--ease);
  position: relative;
  overflow: hidden;
}
.card--link:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow), var(--glow-md), var(--bevel-top);
}
/* Accent hairline that lights up on hover */
.card--link::after {
  content: "";
  position: absolute;
  left: 0; top: 0;
  width: 100%; height: 2px;
  background: var(--accent-grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.card--link:hover::after { transform: scaleX(1); }

.card__icon {
  width: 46px; height: 46px;
  border-radius: 11px;
  display: grid; place-items: center;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent-on-surface);
  margin-bottom: var(--space-3);
}
.card__icon svg { width: 23px; height: 23px; }
.card h3 { font-size: 1.16rem; margin-bottom: 0.5rem; }
.card p { color: var(--text-soft); font-size: 0.96rem; }
.card__more {
  margin-top: var(--space-3);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-on-surface);
  display: inline-flex;
  gap: 0.4rem;
}

/* --- Badges / trust strip -------------------------------------------------- */
.trust {
  border-block: 1px solid var(--hairline);
  background: var(--surface);
}
.trust__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
  padding-block: var(--space-4);
}
.trust__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-mute);
  max-width: 9rem;
}
.trust__badges {
  display: flex;
  gap: clamp(1.2rem, 4vw, 3rem);
  flex-wrap: wrap;
  align-items: center;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--text);
}
.badge::before {
  content: "";
  width: 9px; height: 9px;
  border-radius: 2px;
  background: var(--accent-grad);
  transform: rotate(45deg);
}
.badge small {
  display: block;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  color: var(--text-mute);
  text-transform: uppercase;
}

/* --- Tag / pill ------------------------------------------------------------ */
.tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--hairline);
  color: var(--text-soft);
  background: var(--surface);
  transition: border-color 0.2s, color 0.2s;
}
.tag:hover { border-color: var(--accent); color: var(--accent-on-surface); }
.tag-list { display: flex; flex-wrap: wrap; gap: 0.6rem; }

/* --- Footer ---------------------------------------------------------------- */
.footer {
  border-top: 1px solid var(--hairline);
  background: var(--bg-void);
  padding-block: var(--space-6) var(--space-4);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}
.footer__brand img { height: 64px; margin-bottom: var(--space-3); }
.footer__brand p { color: var(--text-soft); font-size: 0.92rem; max-width: 32ch; }
.footer__col h2 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-mute);
  margin-bottom: var(--space-3);
}
.footer__col a {
  display: block;
  color: var(--text-soft);
  font-size: 0.94rem;
  padding-block: 0.3rem;
  transition: color 0.2s;
}
.footer__col a:hover { color: var(--accent-on-surface); }
.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding-top: var(--space-4);
  border-top: 1px solid var(--hairline);
  font-size: 0.84rem;
  color: var(--text-mute);
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
}

/* ----------------------------------------------------------------------------
   6. PAGE BLOCKS
   ---------------------------------------------------------------------------- */

/* --- Engineered grid + glow background (shared) ---------------------------- */
.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 35%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 35%, transparent 80%);
  pointer-events: none;
}

/* --- Hero ------------------------------------------------------------------ */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 74px;
}
/* --- Global fixed backdrop (stars + far-right logo mark) -------------------
   Injected into every page by main.js. position:fixed keeps it stationary
   while the content scrolls over it; z-index:-1 keeps it behind everything
   without needing a stacking context on nav/main/footer. */
.site-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}
.site-bg__stars {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
}
/* The logo mark, sunk far off to the right and barely legible */
.site-bg__mark {
  position: absolute;
  right: -8%;
  top: 50%;
  width: min(46vw, 620px);
  transform: translateY(-50%);
  opacity: 0.06;
  filter: blur(0.5px);
}
.hero__glow {
  position: absolute;
  z-index: 0;
  width: 60vw; height: 60vw;
  max-width: 760px; max-height: 760px;
  left: -10%; top: -20%;
  background: radial-gradient(circle, var(--glow) 0%, transparent 65%);
  pointer-events: none;
}
.hero__inner { position: relative; z-index: 2; max-width: 760px; }
.hero h1 {
  font-size: var(--fs-3xl);
  margin-block: var(--space-3) var(--space-4);
}
.hero .lead { font-size: clamp(1.05rem, 0.95rem + 0.5vw, 1.3rem); }
.hero__cta {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-5);
  flex-wrap: wrap;
}
.hero__meta {
  margin-top: var(--space-6);
  display: flex;
  gap: var(--space-5);
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-mute);
  letter-spacing: 0.06em;
}
.hero__meta strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--text);
  letter-spacing: -0.02em;
}

/* --- Page hero (interior pages) -------------------------------------------- */
.page-hero {
  position: relative;
  padding-top: calc(74px + var(--space-7));
  padding-bottom: var(--space-6);
  overflow: hidden;
}
.page-hero__inner { position: relative; z-index: 2; max-width: 760px; }
.page-hero h1 { font-size: var(--fs-2xl); margin-block: var(--space-3) var(--space-4); }

/* --- Methodology timeline -------------------------------------------------- */
.timeline { display: grid; gap: 0; position: relative; }
.timeline__step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-4);
  padding-bottom: var(--space-5);
  position: relative;
}
.timeline__step:not(:last-child) { border-left: 0; }
.timeline__num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  width: 52px; height: 52px;
  display: grid; place-items: center;
  border-radius: 13px;
  border: 1px solid var(--hairline);
  background: var(--surface);
  color: var(--accent-on-surface);
  position: relative;
  z-index: 1;
}
/* connector line */
.timeline__step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 26px; top: 52px; bottom: 0;
  width: 1px;
  background: linear-gradient(var(--hairline), transparent);
}
.timeline__body h3 { font-size: 1.18rem; margin-bottom: 0.4rem; }
.timeline__body p { color: var(--text-soft); font-size: 0.96rem; }

/* --- Split / value rows ---------------------------------------------------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  align-items: center;
}

/* --- Service detail block -------------------------------------------------- */
.service-block {
  position: relative;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 100% at 0% 0%, color-mix(in srgb, var(--accent) 7%, transparent), transparent 42%),
    var(--surface);
  padding: clamp(1.5rem, 4vw, var(--space-6));
  scroll-margin-top: 100px;
  overflow: hidden;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease),
    box-shadow 0.35s var(--ease);
}
/* Always-on accent edge down the left so each service reads as a distinct frame */
.service-block::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--accent-grad);
  opacity: 0.85;
}
.service-block:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--accent) 50%, var(--hairline));
  box-shadow: var(--shadow);
}
.service-block + .service-block { margin-top: var(--space-5); }
.service-block__head {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--hairline);
}
/* Number as a defined accent badge instead of plain text */
.service-block__index {
  flex: none;
  width: 56px; height: 56px;
  display: grid; place-items: center;
  border-radius: 15px;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent-on-surface);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--hairline));
}
.service-block__index svg { width: 26px; height: 26px; }
.service-block__head h2 { font-size: var(--fs-xl); }
.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}
.service-facet {
  background: var(--card);
  border: 1px solid var(--hairline-soft);
  border-radius: var(--radius);
  padding: var(--space-4);
  transition: border-color 0.3s var(--ease);
}
.service-block:hover .service-facet { border-color: var(--hairline); }
.service-facet h4 {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-on-surface);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--hairline-soft);
}
.service-facet ul li,
.service-facet p { color: var(--text-soft); font-size: 0.95rem; }
.service-facet ul li {
  position: relative;
  padding-left: 1.3rem;
  margin-bottom: 0.45rem;
}
.service-facet ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.62em;
  width: 6px; height: 6px;
  background: var(--accent-grad);
  border-radius: 1px;
  transform: rotate(45deg);
}

/* Sticky service index — framed in a rounded "oval" panel */
.service-index {
  position: sticky;
  top: 100px;
  align-self: start;
  padding: var(--space-3);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--hairline));
  border-radius: 28px;
  background:
    radial-gradient(120% 80% at 50% 0%, color-mix(in srgb, var(--accent) 8%, transparent), transparent 60%),
    var(--surface);
  box-shadow: var(--shadow);
}
.service-index ol { counter-reset: idx; }
.service-index a {
  display: flex;
  gap: 0.7rem;
  padding: 0.55rem 0.7rem;
  border-radius: 8px;
  color: var(--text-soft);
  font-size: 0.92rem;
  transition: background-color 0.2s, color 0.2s;
}
.service-index a:hover { background: var(--card); color: var(--text); }
.service-index a .n { font-family: var(--font-mono); color: var(--accent-on-surface); font-size: 0.82rem; }
.service-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--space-6);
  align-items: start;
}

/* --- Industry quadrant ----------------------------------------------------- */
.industry-block {
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  background: var(--surface);
  overflow: hidden;
  scroll-margin-top: 100px;
}
.industry-block + .industry-block { margin-top: var(--space-5); }
.industry-block__head {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5);
  border-bottom: 1px solid var(--hairline);
  background: var(--card);
}
.industry-block__head .card__icon { margin: 0; }
.industry-block__head h2 { font-size: var(--fs-xl); }
.quadrant { display: grid; grid-template-columns: repeat(2, 1fr); }
.quadrant__cell { padding: var(--space-5); }
.quadrant__cell:nth-child(odd) { border-right: 1px solid var(--hairline); }
.quadrant__cell:nth-child(-n + 2) { border-bottom: 1px solid var(--hairline); }
.quadrant__cell h4 {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-on-surface);
  margin-bottom: var(--space-3);
}
.quadrant__cell ul li {
  position: relative;
  padding-left: 1.3rem;
  margin-bottom: 0.5rem;
  color: var(--text-soft);
  font-size: 0.94rem;
}
.quadrant__cell ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.6em;
  width: 6px; height: 6px;
  background: var(--accent-grad);
  border-radius: 1px;
  transform: rotate(45deg);
}

/* --- CTA band -------------------------------------------------------------- */
.cta-band {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--hairline);
  background:
    radial-gradient(ellipse 70% 130% at 80% 0%, var(--glow), transparent 60%),
    var(--surface);
  padding: clamp(2rem, 6vw, var(--space-7));
  overflow: hidden;
  text-align: center;
}
.cta-band h2 { font-size: var(--fs-2xl); margin-bottom: var(--space-3); }
.cta-band .lead { margin-inline: auto; margin-bottom: var(--space-5); }
.cta-band__actions { display: flex; gap: var(--space-3); justify-content: center; flex-wrap: wrap; }

/* --- Contact --------------------------------------------------------------- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  align-items: start;
}
.panel {
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  background: var(--surface);
  padding: clamp(1.5rem, 4vw, var(--space-6));
}
.panel h2 { font-size: var(--fs-xl); margin-bottom: var(--space-3); }

/* Calendly placeholder */
.calendly-placeholder {
  margin-top: var(--space-4);
  border: 2px dashed color-mix(in srgb, var(--accent) 45%, var(--hairline));
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--accent) 6%, transparent);
  min-height: 320px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: var(--space-5);
}
.calendly-placeholder .tag { margin-bottom: var(--space-3); }
.calendly-placeholder code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-on-surface);
  background: var(--card);
  padding: 0.2rem 0.5rem;
  border-radius: 5px;
}

/* Form */
.field { margin-bottom: var(--space-4); }
.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-soft);
  margin-bottom: 0.5rem;
}
/* Required marker. Decorative only — the field's `required` attribute is what
   assistive tech actually announces, so the star carries aria-hidden. */
.req {
  color: var(--accent-on-surface);
  text-decoration: none;
  border: 0;
  font-weight: 600;
}
/* Optional marker, deliberately quieter than the label it trails */
.field label .opt {
  color: var(--text-mute);
  letter-spacing: 0.06em;
  text-transform: none;
}
.form-legend {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-mute);
  margin-bottom: var(--space-3);
}

/* Honeypot. Moved off-screen rather than display:none — some bots skip fields
   that are explicitly hidden, and we want them to find this one and fill it. */
.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.turnstile-mount:not(:empty) { margin-bottom: var(--space-3); }

/* Submission feedback */
.form-status {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.5;
}
.form-status.is-pending { color: var(--text-mute); }
.form-status.is-ok {
  color: var(--accent-on-surface);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--hairline));
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}
.form-status.is-error {
  color: #ff8f8f;
  border-color: color-mix(in srgb, #ff6b6b 45%, var(--hairline));
  background: color-mix(in srgb, #ff6b6b 8%, transparent);
}
:root[data-theme="light"] .form-status.is-error { color: #b02525; }
.field input,
.field textarea {
  width: 100%;
  font: inherit;
  font-size: 0.96rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  padding: 0.8rem 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--glow);
}
.field textarea { resize: vertical; min-height: 130px; }
.form-note {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-mute);
  margin-top: var(--space-3);
  padding: var(--space-3);
  border: 1px dashed var(--hairline);
  border-radius: var(--radius-sm);
}
.form-note strong { color: var(--accent-on-surface); }

.contact-direct {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--hairline);
}
.contact-direct a {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--accent-on-surface);
}

/* --- Mission / principle cards --------------------------------------------- */
.principle { padding: var(--space-4); }
.principle .n {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-on-surface);
  margin-bottom: var(--space-2);
  display: block;
}
.principle h3 { font-size: 1.1rem; margin-bottom: 0.4rem; }

/* ----------------------------------------------------------------------------
   7. MOTION / ACCESSIBILITY
   ---------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }

/* Skip link */
.skip-link {
  position: absolute;
  left: 1rem; top: -3rem;
  z-index: 200;
  background: var(--accent);
  color: #04121f;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  font-weight: 600;
  transition: top 0.2s;
}
.skip-link:focus { top: 1rem; }

:focus-visible { outline: 2px solid var(--accent-cyan); outline-offset: 2px; border-radius: 4px; }

/* Mobile nav panel (hidden by default on desktop) */
.nav__panel { display: contents; }

/* ----------------------------------------------------------------------------
   8. RESPONSIVE
   ---------------------------------------------------------------------------- */
@media (max-width: 960px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: var(--space-5); }
  .service-layout { grid-template-columns: 1fr; }
  .service-index { display: none; }
}

@media (max-width: 760px) {
  /* Mobile navigation */
  .nav__toggle { display: block; }
  .nav__panel {
    display: flex;
    position: fixed;
    inset: 74px 0 auto 0;
    flex-direction: column;
    background: var(--surface);
    border-bottom: 1px solid var(--hairline);
    padding: var(--space-4) clamp(1.2rem, 5vw, 2.5rem) var(--space-5);
    gap: var(--space-3);
    transform: translateY(-120%);
    transition: transform 0.4s var(--ease);
    box-shadow: var(--shadow);
  }
  .nav__panel.is-open { transform: translateY(0); }
  .nav__links {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
  }
  .nav__link { padding-block: 0.8rem; border-bottom: 1px solid var(--hairline-soft); }
  .nav__panel .btn { width: 100%; justify-content: center; }

  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; gap: var(--space-4); }
  .service-grid { grid-template-columns: 1fr; }
  .quadrant { grid-template-columns: 1fr; }
  .quadrant__cell:nth-child(odd) { border-right: 0; }
  .quadrant__cell:not(:last-child) { border-bottom: 1px solid var(--hairline); }
  .contact-layout { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .site-bg__mark { display: none; }   /* the mark crowds narrow screens */
  .hero { min-height: auto; padding-block: calc(74px + var(--space-6)) var(--space-7); }
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
  .splash__logo { animation: none !important; }
  .splash__cue .chev { animation: none !important; }
}

/* ============================================================================
   9. HOMEPAGE SPLASH — full-screen logo that reveals the site on scroll/click
   ========================================================================== */
.splash {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  /* Column flow — the cue is a flow sibling, not absolutely positioned, so it
     can never overlap the tagline no matter how short the viewport is. */
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  overflow: hidden;
  padding: 74px 1.25rem clamp(1.25rem, 4vh, 2.5rem);
}
.splash .bg-grid { z-index: 0; }
.splash__glow {
  position: absolute;
  z-index: 0;
  /* pinned explicitly — the splash is a flex column now and no longer
     centres absolutely-positioned children for us */
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 80vw; height: 80vw;
  max-width: 900px; max-height: 900px;
  background: radial-gradient(circle, var(--glow) 0%, transparent 62%);
  pointer-events: none;
}
/* margin:auto centres the block in whatever space the cue leaves over */
.splash__inner {
  position: relative;
  z-index: 2;
  margin: auto;
  display: grid;
  justify-items: center;
  gap: clamp(1rem, 3vh, var(--space-4));
}
.splash__logo {
  width: min(90vw, 880px);
  /* cap the height too, so a short-and-wide window can't inflate the logo
     until it crowds the tagline out of view. The cue is a flow sibling, so
     whatever the logo takes, the cue still lands below it. */
  max-height: min(62vh, 460px);
  object-fit: contain;
  height: auto;
  filter: drop-shadow(0 30px 80px rgba(0,0,0,0.55));
  animation: splashIn 0.9s var(--ease) both;   /* one-time entrance, no loop */
  cursor: pointer;
  transition: transform 0.5s var(--ease);
}
.splash__logo:hover { transform: translateY(-6px) scale(1.01); }
@keyframes splashIn {
  from { opacity: 0; transform: translateY(20px) scale(0.98); }
  to   { opacity: 1; transform: none; }
}
.splash__tagline {
  font-family: var(--font-mono);
  font-size: clamp(0.75rem, 0.6rem + 0.6vw, 0.95rem);
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--text-soft);
}
.splash__cue {
  position: relative;
  z-index: 2;
  flex: none;               /* never shrinks or gets overlapped */
  margin-top: clamp(1.5rem, 4vh, 2.5rem);
  display: grid;
  justify-items: center;
  gap: 0.5rem;
  cursor: pointer;
  background: none;
  border: 0;
  color: var(--text-mute);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.splash__cue:hover { color: var(--accent-on-surface); }
.splash__cue .chev {
  width: 26px; height: 26px;
  display: grid; place-items: center;
  transition: transform 0.3s var(--ease);   /* moves on hover, not on a loop */
}
.splash__cue:hover .chev { transform: translateY(5px); }

/* ============================================================================
   10. PRICING — service cards, cart estimator, project brief form
   ========================================================================== */
.timeline-select {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0.4rem;
  border: 1px solid var(--hairline);
  border-radius: 14px;
  background: var(--surface);
}
.timeline-select__opt {
  position: relative;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-soft);
  border-radius: 10px;
  padding: 0.6rem 1rem;
  font-family: var(--font-display);
  font-size: 0.92rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.1rem;
  transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}
.timeline-select__opt small {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  color: var(--text-mute);
}
.timeline-select__opt[aria-pressed="true"] {
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--hairline));
  color: var(--text);
}
.timeline-select__opt[aria-pressed="true"] small { color: var(--accent-on-surface); }

.pricing-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: var(--space-5);
  align-items: start;
}
.pricing-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-4); }

.price-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: var(--card);
  padding: var(--space-4);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.price-card.is-added {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--hairline));
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 40%, transparent), var(--shadow);
}
.price-card h3 { font-size: 1.12rem; margin-bottom: 0.3rem; }
.price-card .price {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.7rem;
  letter-spacing: -0.02em;
  margin: 0.4rem 0 0.1rem;
}
.price-card .price .unit { font-size: 0.82rem; font-weight: 500; color: var(--text-mute); font-family: var(--font-mono); }
/* "from" sits above the figure — these are starting prices, not quotes */
.price-card .price .price__from {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-mute);
  margin-bottom: 0.1rem;
}
.price-card .price-desc { color: var(--text-soft); font-size: 0.92rem; margin-bottom: var(--space-3); }
.price-card ul { margin-bottom: var(--space-3); }
/* What actually moves the number — stated up front, not left to the call */
.price-note {
  margin-bottom: var(--space-4);
  padding-top: 0.75rem;
  border-top: 1px solid var(--hairline);
  color: var(--text-mute);
  font-size: 0.82rem;
  line-height: 1.5;
}
/* Push the button to the bottom so cards line up despite uneven note length */
.price-card .btn { margin-top: auto; }
.price-card ul li {
  position: relative;
  padding-left: 1.3rem;
  margin-bottom: 0.4rem;
  color: var(--text-soft);
  font-size: 0.9rem;
}
.price-card ul li::before {
  content: "";
  position: absolute; left: 0; top: 0.55em;
  width: 6px; height: 6px;
  background: var(--accent-grad);
  border-radius: 1px; transform: rotate(45deg);
}
.price-card .btn { margin-top: auto; justify-content: center; }
.price-card .btn-added-label { display: none; }
.price-card.is-added .btn-add-label { display: none; }
.price-card.is-added .btn-added-label { display: inline; }

/* Cart summary */
.cart {
  position: sticky;
  top: 100px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  background: var(--surface);
  padding: var(--space-4);
  box-shadow: var(--shadow);
}
.cart h3 { font-size: 1.1rem; display: flex; align-items: center; gap: 0.5rem; }
.cart__count {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  background: var(--accent-grad);
  color: #04121f;
  border-radius: 999px;
  padding: 0.1rem 0.5rem;
}
.cart__items { margin: var(--space-3) 0; min-height: 40px; }
.cart__empty { color: var(--text-mute); font-size: 0.9rem; font-style: italic; }
.cart__item {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  align-items: center;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--hairline-soft);
  font-size: 0.9rem;
}
.cart__item-name { color: var(--text); }
.cart__item-right { display: flex; align-items: center; gap: 0.6rem; }
.cart__item-price { font-family: var(--font-mono); color: var(--text-soft); white-space: nowrap; }
.cart__remove {
  background: none; border: 0; color: var(--text-mute);
  font-size: 1.1rem; line-height: 1; padding: 0 0.2rem;
}
.cart__remove:hover { color: #ff6b6b; }
.cart__row {
  display: flex; justify-content: space-between;
  font-size: 0.9rem; color: var(--text-soft);
  padding: 0.3rem 0;
}
.cart__total {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-top: var(--space-2);
  padding-top: var(--space-3);
  border-top: 1px solid var(--hairline);
}
.cart__total .label { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-mute); }
.cart__total .amount { font-family: var(--font-display); font-weight: 700; font-size: 1.6rem; }
.cart .btn { width: 100%; justify-content: center; margin-top: var(--space-4); }
.cart__note { font-size: 0.74rem; color: var(--text-mute); margin-top: var(--space-3); font-family: var(--font-mono); line-height: 1.5; }

/* Project brief form */
.brief { scroll-margin-top: 100px; }
.brief__cart-summary {
  border: 1px dashed color-mix(in srgb, var(--accent) 45%, var(--hairline));
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--accent) 6%, transparent);
  padding: var(--space-3);
  margin-bottom: var(--space-4);
  font-size: 0.9rem;
}
.brief__cart-summary h4 { font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent-on-surface); margin-bottom: var(--space-2); }
.brief__cart-summary ul li { color: var(--text-soft); padding: 0.15rem 0; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3); }

/* ============================================================================
   11. AI CHAT WIDGET (injected on every page, bottom-right)
   ========================================================================== */
.chat-launcher {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 150;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1.1rem 0.7rem 0.8rem;
  border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent);
  border-radius: 999px;
  background: var(--accent-grad);
  color: #04121f;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.92rem;
  box-shadow: 0 14px 40px -12px var(--glow), var(--shadow);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), opacity 0.25s var(--ease);
}
.chat-launcher:hover { transform: translateY(-2px); }
.chat-launcher svg { width: 22px; height: 22px; }
.chat-launcher .pulse {
  position: absolute; top: 6px; right: 8px;
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 0 0 var(--accent-cyan);
  animation: chatPulse 2s infinite;
}
@keyframes chatPulse {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent-cyan) 70%, transparent); }
  70% { box-shadow: 0 0 0 9px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}
.chat-launcher.is-hidden { opacity: 0; pointer-events: none; transform: scale(0.8); }

.chat-panel {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 151;
  width: min(380px, calc(100vw - 2rem));
  height: min(560px, calc(100vh - 2rem));
  display: flex;
  flex-direction: column;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
  overflow: hidden;
  opacity: 0;
  transform: translateY(20px) scale(0.98);
  pointer-events: none;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}
.chat-panel.is-open { opacity: 1; transform: none; pointer-events: auto; }

.chat-head {
  display: flex; align-items: center; gap: 0.7rem;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--hairline);
  background: var(--card);
}
.chat-head__avatar {
  width: 38px; height: 38px; border-radius: 10px;
  display: grid; place-items: center;
  background: var(--accent-grad); color: #04121f;
  flex: none;
}
.chat-head__avatar svg { width: 20px; height: 20px; }
.chat-head__title { font-family: var(--font-display); font-weight: 600; font-size: 0.98rem; line-height: 1.2; }
.chat-head__status { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-mute); letter-spacing: 0.05em; }
.chat-head__status::before {
  content: ""; display: inline-block;
  width: 7px; height: 7px; border-radius: 50%;
  background: #3ddc84; margin-right: 0.4rem; vertical-align: middle;
}
.chat-close {
  margin-left: auto;
  background: none; border: 0; color: var(--text-soft);
  width: 32px; height: 32px; border-radius: 8px; font-size: 1.2rem;
}
.chat-close:hover { background: var(--bg); color: var(--text); }

.chat-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  scroll-behavior: smooth;
}
.chat-msg { max-width: 85%; font-size: 0.92rem; line-height: 1.55; }
.chat-msg__bubble {
  padding: 0.65rem 0.9rem;
  border-radius: 14px;
}
.chat-msg--bot { align-self: flex-start; }
.chat-msg--bot .chat-msg__bubble {
  background: var(--card);
  border: 1px solid var(--hairline);
  border-bottom-left-radius: 4px;
  color: var(--text);
}
.chat-msg--bot .chat-msg__bubble a { color: var(--accent-on-surface); text-decoration: underline; }
.chat-msg--user { align-self: flex-end; }
.chat-msg--user .chat-msg__bubble {
  background: var(--accent-grad);
  color: #04121f;
  border-bottom-right-radius: 4px;
}
.chat-typing { display: inline-flex; gap: 3px; padding: 0.7rem 0.9rem; }
.chat-typing span {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--text-mute);
  animation: typing 1.2s infinite;
}
.chat-typing span:nth-child(2) { animation-delay: 0.2s; }
.chat-typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing { 0%, 60%, 100% { opacity: 0.3; transform: translateY(0); } 30% { opacity: 1; transform: translateY(-3px); } }

.chat-chips { display: flex; flex-wrap: wrap; gap: 0.4rem; padding: 0 var(--space-4) var(--space-3); }
.chat-chip {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--hairline);
  background: var(--bg);
  color: var(--text-soft);
  transition: border-color 0.2s, color 0.2s;
}
.chat-chip:hover { border-color: var(--accent); color: var(--accent-on-surface); }

.chat-input {
  display: flex; gap: 0.5rem;
  padding: var(--space-3);
  border-top: 1px solid var(--hairline);
  background: var(--card);
}
.chat-input input {
  flex: 1;
  font: inherit; font-size: 0.92rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--hairline);
  border-radius: 10px;
  padding: 0.6rem 0.8rem;
}
.chat-input input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--glow); }
.chat-input button {
  width: 42px; flex: none;
  border: 0; border-radius: 10px;
  background: var(--accent-grad); color: #04121f;
  display: grid; place-items: center;
}
.chat-input button svg { width: 18px; height: 18px; }
.chat-disclaimer { font-family: var(--font-mono); font-size: 0.62rem; color: var(--text-mute); text-align: center; padding: 0 var(--space-3) var(--space-3); }

@media (max-width: 760px) {
  .pricing-layout { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .cart { position: static; }
  .field-row { grid-template-columns: 1fr; }
  .chat-panel { right: 0; bottom: 0; width: 100vw; height: 100svh; border-radius: 0; }
}