/* ============================================================
   Aush — Base CSS
   Crystal Clear Design Tokens, Modern CSS Reset & Core Utilities
   ============================================================ */

/* ── Global Design Tokens ──────────────────────────────────── */
:root {
  /* Explicit light default — lets an explicit light-mode choice
     (data-theme="light") win over an OS set to dark for native
     controls too, not just our own tokens. */
  color-scheme: light;

  /* Brand Primary & Accents — theme: primary #00A3FF / secondary #121921
     / tertiary #F8FAFC / neutral #64748B. Tertiary and neutral already
     matched --color-bg-light and --color-text-light exactly; primary and
     secondary replace the old orange accent and navy dark tone below. */
  --color-primary: #121921;
  --color-primary-light: #1C2731;
  --color-primary-dark: #0A0F14;

  --color-accent: #00A3FF;
  --color-accent-light: #33B5FF;
  --color-accent-dark: #0087D6;
  --color-accent-subtle: rgba(0, 163, 255, 0.08);
  --color-accent-glow: rgba(0, 163, 255, 0.28);

  --color-cool: #0284c7;
  --color-cool-light: #38bdf8;
  --color-cool-dark: #0369a1;
  --color-cool-subtle: rgba(2, 132, 199, 0.08);

  /* Background Palette */
  --color-bg-white: #ffffff;
  --color-bg-light: #f8fafc;
  --color-bg-mid: #f1f5f9;
  --color-bg-card: #ffffff;
  --color-bg-dark: #121921;
  --color-bg-dark-secondary: #1A222C;

  /* Typography Colors */
  --color-text-dark: #121921;
  --color-text-body: #334155;
  --color-text-light: #64748b;
  --color-text-muted: #94a3b8;
  --color-text-white: #ffffff;
  --color-text-white-muted: rgba(255, 255, 255, 0.72);

  /* Borders & Dividers */
  --color-border: rgba(15, 23, 42, 0.08);
  --color-border-light: rgba(15, 23, 42, 0.05);
  --color-border-dark: rgba(255, 255, 255, 0.1);
  --color-border-dark-subtle: rgba(255, 255, 255, 0.06);

  /* System States */
  --color-success: #10b981;
  --color-success-bg: rgba(16, 185, 129, 0.1);
  --color-error: #ef4444;
  --color-error-bg: rgba(239, 68, 68, 0.1);
  --color-warning: #f59e0b;
  --color-warning-bg: rgba(245, 158, 11, 0.1);

  /* Navigation & Header Heights */
  --nav-height-desktop: 80px;
  --nav-height-mobile: 64px;
  --header-bg-solid: rgba(255, 255, 255, 0.98);
  --header-bg-glass: rgba(255, 255, 255, 0.9);
  --header-border: rgba(15, 23, 42, 0.08);
  /* Header controls (search input, icon buttons, menu toggle) — a
     surface tint one step off the header background, in either
     theme. Not the same as --color-border/--color-bg-mid: those are
     tuned for a light-bg page, these for the header's own (glassy,
     theme-flipped) background specifically. */
  --header-control-bg: rgba(15, 23, 42, 0.05);
  --header-control-bg-hover: rgba(0, 163, 255, 0.08);
  --header-control-border: rgba(15, 23, 42, 0.12);
  --header-logo-halo: rgba(15, 23, 42, 0.16);

  /* Typography Scales */
  --font-primary: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Lato', system-ui, -apple-system, sans-serif;

  --text-2xs: 0.6875rem; /* 11px */
  --text-xs: 0.75rem;    /* 12px */
  --text-sm: 0.875rem;   /* 14px */
  --text-base: 1rem;     /* 16px */
  --text-md: 1.125rem;   /* 18px */
  --text-lg: 1.25rem;    /* 20px */
  --text-xl: 1.5rem;     /* 24px */
  --text-2xl: 1.875rem;  /* 30px */
  --text-3xl: 2.25rem;   /* 36px */
  --text-4xl: 3rem;      /* 48px */
  --text-5xl: 3.75rem;   /* 60px */

  --font-light: 300;
  --font-regular: 400;
  --font-medium: 500;
  --font-semi: 600;
  --font-bold: 700;
  --font-black: 900;

  --leading-tight: 1.15;
  --leading-snug: 1.35;
  --leading-normal: 1.6;
  --leading-loose: 1.8;

  --tracking-tighter: -0.04em;
  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.03em;
  --tracking-wider: 0.08em;
  --tracking-widest: 0.15em;

  /* Spacing Scale */
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-7: 1.75rem;  /* 28px */
  --space-8: 2rem;     /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */
  --space-16: 4rem;    /* 64px */
  --space-20: 5rem;    /* 80px */
  --space-24: 6rem;    /* 96px */
  --space-32: 8rem;    /* 128px */

  /* Containers */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1440px;

  /* Border Radii */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* Elevation & Shadows */
  --shadow-subtle: 0 1px 3px rgba(15, 23, 42, 0.04), 0 1px 2px rgba(15, 23, 42, 0.02);
  --shadow-sm: 0 2px 8px -2px rgba(15, 23, 42, 0.06), 0 1px 4px -1px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 8px 24px -4px rgba(15, 23, 42, 0.08), 0 4px 8px -2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 20px 40px -8px rgba(15, 23, 42, 0.12), 0 8px 16px -4px rgba(15, 23, 42, 0.06);
  --shadow-xl: 0 25px 60px -12px rgba(15, 23, 42, 0.18);
  --shadow-glow-accent: 0 8px 24px -4px rgba(0, 163, 255, 0.35);
  --shadow-glow-cool: 0 8px 24px -4px rgba(2, 132, 199, 0.35);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-inout: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);

  --duration-fast: 150ms;
  --duration-base: 250ms;
  --duration-slow: 400ms;
  --duration-slower: 700ms;

  /* Z-Index Hierarchy */
  --z-below: -1;
  --z-base: 0;
  --z-raised: 10;
  --z-dropdown: 25;
  --z-sticky: 30;
  --z-overlay: 45;
  --z-modal: 50;
  --z-toast: 90;
  --z-top: 100;
  --z-loader: 200;
}

/* ── Dark theme ────────────────────────────────────────────────
   Redefines ONLY the semantic surface/text/border tokens above —
   never the primitives (--color-accent, spacing, radius, etc.) —
   so every component already written against var(--color-bg-white)
   / var(--color-text-dark) / var(--color-border) etc. re-themes for
   free. Components still using raw hex instead of these tokens stay
   light-only until migrated; that's tracked separately, not a bug
   here.

   Two selectors, same values: the media query drives the "system"
   choice (no explicit user override — data-theme unset), the
   attribute selector drives an explicit toggle. `:not([data-theme=
   "light"])` lets a user who explicitly picked light override an OS
   set to dark. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    /* Tells the browser to render native controls (select dropdown
       popups, date pickers, scrollbars) with a dark palette instead
       of forcing its default light chrome around our dark-themed
       fields. */
    color-scheme: dark;
    --color-bg-white: #14181f;
    --color-bg-light: #191d24;
    --color-bg-mid: #20252e;
    --color-bg-card: #1b1f27;
    --color-bg-dark: #0a0d12;
    --color-bg-dark-secondary: #12161d;

    --color-text-dark: #f1f4f8;
    --color-text-body: #c3c9d3;
    --color-text-light: #939aa6;
    --color-text-muted: #6b7280;
    --color-text-white: #f1f4f8;
    --color-text-white-muted: rgba(241, 244, 248, 0.72);

    --color-border: rgba(255, 255, 255, 0.1);
    --color-border-light: rgba(255, 255, 255, 0.06);

    --color-accent-subtle: rgba(0, 163, 255, 0.14);

    --header-bg-solid: rgba(20, 24, 31, 0.98);
    --header-bg-glass: rgba(20, 24, 31, 0.88);
    --header-border: rgba(255, 255, 255, 0.08);
    --header-control-bg: rgba(255, 255, 255, 0.08);
    --header-control-bg-hover: rgba(0, 163, 255, 0.14);
    --header-control-border: rgba(255, 255, 255, 0.18);
    --header-logo-halo: rgba(255, 255, 255, 0.5);

    --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.28), 0 1px 2px rgba(0, 0, 0, 0.18);
    --shadow-sm: 0 2px 8px -2px rgba(0, 0, 0, 0.32), 0 1px 4px -1px rgba(0, 0, 0, 0.22);
    --shadow-md: 0 8px 24px -4px rgba(0, 0, 0, 0.4), 0 4px 8px -2px rgba(0, 0, 0, 0.24);
    --shadow-lg: 0 20px 40px -8px rgba(0, 0, 0, 0.48), 0 8px 16px -4px rgba(0, 0, 0, 0.28);
    --shadow-xl: 0 25px 60px -12px rgba(0, 0, 0, 0.55);
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --color-bg-white: #14181f;
  --color-bg-light: #191d24;
  --color-bg-mid: #20252e;
  --color-bg-card: #1b1f27;
  --color-bg-dark: #0a0d12;
  --color-bg-dark-secondary: #12161d;

  --color-text-dark: #f1f4f8;
  --color-text-body: #c3c9d3;
  --color-text-light: #939aa6;
  --color-text-muted: #6b7280;
  --color-text-white: #f1f4f8;
  --color-text-white-muted: rgba(241, 244, 248, 0.72);

  --color-border: rgba(255, 255, 255, 0.1);
  --color-border-light: rgba(255, 255, 255, 0.06);

  --color-accent-subtle: rgba(0, 163, 255, 0.14);

  --header-bg-solid: rgba(20, 24, 31, 0.98);
  --header-bg-glass: rgba(20, 24, 31, 0.88);
  --header-border: rgba(255, 255, 255, 0.08);

  --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.28), 0 1px 2px rgba(0, 0, 0, 0.18);
  --shadow-sm: 0 2px 8px -2px rgba(0, 0, 0, 0.32), 0 1px 4px -1px rgba(0, 0, 0, 0.22);
  --shadow-md: 0 8px 24px -4px rgba(0, 0, 0, 0.4), 0 4px 8px -2px rgba(0, 0, 0, 0.24);
  --shadow-lg: 0 20px 40px -8px rgba(0, 0, 0, 0.48), 0 8px 16px -4px rgba(0, 0, 0, 0.28);
  --shadow-xl: 0 25px 60px -12px rgba(0, 0, 0, 0.55);
}

/* Smooth the handful of tokens most components inherit directly
   (background/text/border) so a theme switch doesn't flash-cut. */
body,
.site-header,
.card,
.btn {
  transition: background-color var(--duration-slow) var(--ease-out), color var(--duration-slow) var(--ease-out), border-color var(--duration-slow) var(--ease-out);
}

/* ── Modern CSS Reset ──────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  /* clip, not hidden — overflow-x: hidden forces overflow-y to compute
     as auto (a CSS quirk: the paired axis can't stay "visible" once one
     axis is non-visible), which turns html/body into a scroll container
     and silently breaks position: sticky for every descendant on the
     site. clip suppresses horizontal overflow the same way without
     tripping that quirk. */
  overflow-x: clip;
}

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--font-regular);
  line-height: var(--leading-normal);
  color: var(--color-text-dark);
  background-color: var(--color-bg-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
  position: relative;
}

body.menu-open {
  overflow: hidden;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

img {
  height: auto;
  image-rendering: auto;
}

input,
button,
textarea,
select {
  font: inherit;
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  line-height: var(--leading-tight);
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-dark);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

ul,
ol {
  list-style: none;
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

/* ── Focus Indicator (Accessibility) ──────────────────────── */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-xs);
}

/* ── Skip to Content (Accessibility) ──────────────────────── */
.skip-to-content {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-3) var(--space-6);
  background: var(--color-accent);
  color: #ffffff;
  font-weight: var(--font-bold);
  border-radius: var(--radius-sm);
  z-index: var(--z-top);
  transition: top var(--duration-fast);
}

.skip-to-content:focus {
  top: var(--space-4);
}

/* ── Page Loader (site-wide splash) ───────────────────────────
   Shown for ~1.5-2s on every page load (see the inline script right
   after <body> in includes/header.php) — logo + a filling progress
   bar, nothing else. html.is-loading (set by the blocking theme
   script in <head>, before first paint) locks page scroll for as
   long as this is visible so there's no scrollbar flash or
   scroll-position jump underneath it. */
html.is-loading,
html.is-loading body {
  overflow: hidden;
}

.page-loader {
  position: fixed;
  inset: 0;
  z-index: var(--z-loader);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  background: var(--color-bg-white);
  transition: opacity 0.5s ease;
}

.page-loader.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.page-loader__logo {
  width: 140px;
  height: auto;
  animation: pageLoaderPulse 1.4s ease-in-out infinite;
}

.page-loader__bar {
  width: 160px;
  height: 3px;
  border-radius: var(--radius-full);
  background: var(--color-border);
  overflow: hidden;
}

.page-loader__bar-fill {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--color-accent);
  border-radius: inherit;
  animation: pageLoaderFill 1.8s var(--ease-out) forwards;
}

@keyframes pageLoaderPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.55; }
}

@keyframes pageLoaderFill {
  from { width: 0%; }
  to   { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .page-loader__logo {
    animation: none;
  }
  .page-loader__bar-fill {
    animation: none;
    width: 100%;
  }
  .page-loader {
    transition: none;
  }
}

/* ── Layout Utilities ──────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-2xl);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.section {
  padding-block: clamp(3rem, 6vw, 6rem);
  position: relative;
}

.section--dark {
  background-color: var(--color-bg-dark);
  color: var(--color-text-white);
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4,
.section--dark h5,
.section--dark h6 {
  color: var(--color-text-white);
}

.section--mid {
  background-color: var(--color-bg-mid);
  color: var(--color-text-dark);
}

.section--light {
  background-color: var(--color-bg-light);
  color: var(--color-text-dark);
}

/* ── Typography Utilities ─────────────────────────────────── */
.text-xs  { font-size: var(--text-xs); }
.text-sm  { font-size: var(--text-sm); }
.text-md  { font-size: var(--text-md); }
.text-xl  { font-size: var(--text-xl); }
.text-4xl { font-size: var(--text-4xl); }

.font-medium  { font-weight: var(--font-medium); }
.font-semi    { font-weight: var(--font-semi); }
.font-bold    { font-weight: var(--font-bold); }

.text-accent { color: var(--color-accent) !important; }
.text-muted  { color: var(--color-text-muted) !important; }
.text-white  { color: var(--color-text-white) !important; }
.text-dark   { color: var(--color-text-dark) !important; }

.text-center { text-align: center; }

/* ── Screen Reader Utility ────────────────────────────────── */
/* .visually-hidden is the same pattern under the other common name
   used by blog.php/products.php/product-listing.php — was undefined,
   so those headings rendered as plain visible text instead of being
   screen-reader-only. */
.sr-only,
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ── Flex & Grid Utilities ────────────────────────────────── */
.flex        { display: flex; }
.flex-wrap   { flex-wrap: wrap; }

.grid { display: grid; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }

/* ── Modern Button Components ─────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.6rem;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  letter-spacing: 0.02em;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--duration-base) var(--ease-out);
  white-space: nowrap;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  border: 1px solid transparent;
}

.btn:active {
  transform: scale(0.98);
}

.btn--primary {
  background: var(--color-accent);
  color: #ffffff !important;
  border-color: var(--color-accent);
  box-shadow: 0 4px 14px rgba(0, 163, 255, 0.25);
}

.btn--primary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 163, 255, 0.38);
}

.btn--outline {
  background: transparent;
  color: #ffffff !important;
  border-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
}

.btn--outline:hover {
  background: #ffffff;
  color: var(--color-text-dark) !important;
  border-color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.btn--outline-dark {
  background: transparent;
  color: var(--color-text-dark) !important;
  border-color: rgba(15, 23, 42, 0.25);
}

.btn--outline-dark:hover {
  background: var(--color-text-dark);
  color: #ffffff !important;
  border-color: var(--color-text-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--ghost {
  background: transparent;
  color: var(--color-accent);
  padding-inline: 0.25rem;
}

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

.btn--sm {
  padding: 0.5rem 1rem;
  font-size: var(--text-xs);
  border-radius: var(--radius-xs);
}

.btn--lg {
  padding: 0.9rem 2.2rem;
  font-size: var(--text-base);
  border-radius: var(--radius-md);
}

/* ── Modern Badges & Pills ────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  font-size: var(--text-2xs);
  font-weight: var(--font-bold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: var(--radius-xs);
  line-height: 1;
}

.card {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
  transition: transform var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out),
              border-color var(--duration-base) var(--ease-out);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 163, 255, 0.2);
}

.card__image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.card:hover .card__image {
  transform: scale(1.04);
}

.card__body {
  padding: var(--space-6);
}

.card__title {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-2);
  line-height: var(--leading-snug);
}

.card__excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  line-height: var(--leading-normal);
}

/* ── Modern Form Controls ──────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  color: var(--color-text-dark);
  letter-spacing: 0.01em;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: var(--text-sm);
  font-family: var(--font-primary);
  line-height: var(--leading-normal);
  border: 1px solid rgba(15, 23, 42, 0.16);
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-white);
  color: var(--color-text-dark);
  transition: border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out);
  appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-accent);
  /* Was hardcoded #ffffff — forced every field white on focus even in
     dark mode, where the field's own text color (var(--color-text-dark),
     which flips light) then sat unreadable on that forced-white box.
     Token flips with the theme like the rest of the field. */
  background-color: var(--color-bg-white);
  box-shadow: 0 0 0 3px rgba(0, 163, 255, 0.18);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-error {
  font-size: var(--text-xs);
  color: var(--color-error);
  font-weight: var(--font-medium);
}

/* ── Section Headers ───────────────────────────────────────── */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: var(--font-black);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
  position: relative;
}

.section-tag::before {
  content: '';
  display: inline-block;
  width: 14px;
  height: 2px;
  background: currentColor;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4.2vw, 3rem);
  font-weight: var(--font-black);
  letter-spacing: var(--tracking-tight);
  line-height: 1.15;
  margin-bottom: var(--space-4);
  color: var(--color-text-dark);
}

.section-subtitle {
  font-size: var(--text-base);
  color: var(--color-text-light);
  max-width: 65ch;
  line-height: var(--leading-normal);
}

/* ── Breadcrumb Bar ────────────────────────────────────────── */
.page-breadcrumb-bar {
  background: var(--color-bg-light);
  border-bottom: 1px solid var(--color-border);
  padding-block: var(--space-3);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--color-text-light);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb__sep {
  color: var(--color-text-muted);
}

/* ── WhatsApp Sticky Floating Action Button ────────────────── */
.wa-fab {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: var(--z-sticky);
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: #25d366;
  color: #ffffff !important;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
  transition: transform var(--duration-base) var(--ease-bounce), box-shadow var(--duration-base) var(--ease-out);
}

.wa-fab:hover {
  transform: scale(1.1) translateY(-2px);
  box-shadow: 0 12px 30px rgba(37, 211, 102, 0.55);
}

@media (max-width: 767.98px) {
  .wa-fab {
    bottom: 5.5rem;
    right: 1.25rem;
    width: 48px;
    height: 48px;
  }
}

/* ── Reduced Motion Preference ─────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}