/* ==========================================================================
   BizNY.co — Design System
   Premium trust-blue aesthetic. Mobile-first. Fully responsive.
   Author: BizNY Team  |  License: MIT for first-party use.
   ========================================================================== */

/* ─── 1. Design tokens ────────────────────────────────────────────────── */
:root {
  /* Palette — trust-blue, high contrast, WCAG AA+ throughout */
  --c-navy:        #0A2540;        /* Primary brand */
  --c-navy-700:    #123559;
  --c-navy-500:    #1e4a7a;
  --c-blue:        #2E6FF2;        /* Accent / CTA */
  --c-blue-600:    #1e5bd8;
  --c-blue-50:     #eaf1ff;
  --c-sky:         #e7f1fc;        /* Soft hero wash */
  --c-green:       #00B894;
  --c-green-50:    #e0f7f1;
  --c-red:         #e63946;
  --c-amber:       #f59f0b;

  /* Neutrals */
  --c-white:       #ffffff;
  --c-bg:          #ffffff;
  --c-bg-soft:     #f7f9fc;
  --c-bg-alt:      #eff3f8;
  --c-border:      #dfe5ee;
  --c-border-soft: #eef2f7;
  --c-text:        #0e1a2b;
  --c-text-muted:  #55657c;
  --c-text-soft:   #7b8aa3;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto,
               "Helvetica Neue", Arial, sans-serif;
  --font-serif: ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas,
               "Liberation Mono", monospace;

  /* Type scale — modular, 1.200 ratio */
  --fs-xs:   0.75rem;    /* 12 */
  --fs-sm:   0.875rem;   /* 14 */
  --fs-base: 1rem;       /* 16 */
  --fs-md:   1.125rem;   /* 18 */
  --fs-lg:   1.3125rem;  /* 21 */
  --fs-xl:   1.5rem;     /* 24 */
  --fs-2xl:  1.875rem;   /* 30 */
  --fs-3xl:  2.25rem;    /* 36 */
  --fs-4xl:  2.75rem;    /* 44 */
  --fs-5xl:  3.5rem;     /* 56 */

  --lh-tight: 1.15;
  --lh-snug:  1.3;
  --lh-normal:1.55;
  --lh-loose: 1.7;

  /* Space scale */
  --s-1:  0.25rem;
  --s-2:  0.5rem;
  --s-3:  0.75rem;
  --s-4:  1rem;
  --s-5:  1.25rem;
  --s-6:  1.5rem;
  --s-8:  2rem;
  --s-10: 2.5rem;
  --s-12: 3rem;
  --s-16: 4rem;
  --s-20: 5rem;
  --s-24: 6rem;

  /* Radius & shadows */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 14px;
  --r-xl: 20px;
  --r-full: 999px;

  --sh-xs: 0 1px 2px rgba(10,37,64,0.04);
  --sh-sm: 0 2px 6px rgba(10,37,64,0.06);
  --sh-md: 0 6px 20px rgba(10,37,64,0.08);
  --sh-lg: 0 16px 40px rgba(10,37,64,0.10);
  --sh-ring: 0 0 0 3px rgba(46,111,242,0.18);

  /* Layout */
  --container: 1200px;
  --container-sm: 760px;
  --header-h: 68px;

  /* Motion */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --t-fast: 120ms;
  --t-base: 200ms;
}

/* ─── 2. Reset / normalize ────────────────────────────────────────────── */
*,
*::before,
*::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "kern", "liga", "calt", "ss01";
  overflow-x: hidden;
}
img, svg, video { max-width: 100%; height: auto; display: block; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: 0; }
a { color: var(--c-blue); text-decoration: none; transition: color var(--t-fast) var(--ease); }
a:hover { color: var(--c-blue-600); text-decoration: underline; text-underline-offset: 3px; }
h1, h2, h3, h4, h5, h6 { margin: 0 0 var(--s-4); font-weight: 700; line-height: var(--lh-tight); color: var(--c-text); letter-spacing: -0.01em; }
p { margin: 0 0 var(--s-4); }
ul, ol { margin: 0 0 var(--s-4); padding-left: var(--s-6); }
li { margin-bottom: var(--s-2); }
hr { border: 0; border-top: 1px solid var(--c-border); margin: var(--s-8) 0; }
code, pre { font-family: var(--font-mono); font-size: 0.925em; }
pre {
  background: var(--c-bg-soft);
  border: 1px solid var(--c-border);
  padding: var(--s-4);
  border-radius: var(--r-md);
  overflow-x: auto;
}
input, textarea, select {
  font: inherit;
  color: inherit;
}
:focus-visible {
  outline: 3px solid var(--c-blue);
  outline-offset: 2px;
  border-radius: 3px;
}

/* ─── 3. Utilities ─────────────────────────────────────────────────────── */
.container     { width: 100%; max-width: var(--container);    margin: 0 auto; padding: 0 var(--s-5); }
.container-sm  { width: 100%; max-width: var(--container-sm); margin: 0 auto; padding: 0 var(--s-5); }
.stack > * + * { margin-top: var(--s-4); }
.stack-lg > * + * { margin-top: var(--s-8); }
.text-center   { text-align: center; }
.text-muted    { color: var(--c-text-muted); }
.text-sm       { font-size: var(--fs-sm); }
.eyebrow       {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-blue);
  background: var(--c-blue-50);
  padding: var(--s-1) var(--s-3);
  border-radius: var(--r-full);
  margin-bottom: var(--s-3);
}
.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; }
.skip-link { position: absolute; top: -100px; left: 0; background: var(--c-navy); color: #fff; padding: var(--s-3) var(--s-5); z-index: 10000; border-radius: 0 0 var(--r-md) 0; }
.skip-link:focus { top: 0; }

/* ─── 4. Buttons ──────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  padding: 0.75rem 1.25rem;
  font-weight: 600;
  font-size: var(--fs-base);
  border-radius: var(--r-md);
  border: 1px solid transparent;
  transition: all var(--t-fast) var(--ease);
  white-space: nowrap;
  text-decoration: none;
  user-select: none;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary {
  background: var(--c-blue);
  color: #fff;
  box-shadow: 0 4px 12px rgba(46,111,242,0.25);
}
.btn-primary:hover { background: var(--c-blue-600); color: #fff; box-shadow: 0 6px 18px rgba(46,111,242,0.32); }
.btn-secondary {
  background: var(--c-white);
  color: var(--c-navy);
  border-color: var(--c-border);
}
.btn-secondary:hover { border-color: var(--c-blue); color: var(--c-blue); }
.btn-ghost {
  background: transparent;
  color: var(--c-navy);
}
.btn-ghost:hover { background: var(--c-bg-alt); }
.btn-lg { padding: 0.9rem 1.75rem; font-size: var(--fs-md); }
.btn-sm { padding: 0.5rem 1rem; font-size: var(--fs-sm); }
.btn-full { width: 100%; }

/* ─── 5. Header / nav ─────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--c-border-soft);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: var(--s-6);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--c-navy);
  letter-spacing: -0.02em;
}
.brand:hover { color: var(--c-navy); text-decoration: none; }
.brand svg { width: 32px; height: 32px; }
.brand__tld { color: var(--c-blue); font-weight: 600; }

/* Primary nav */
.nav { display: none; }
.nav__list { list-style: none; margin: 0; padding: 0; display: flex; gap: var(--s-1); }
.nav__item { position: relative; }
.nav__link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.6rem var(--s-4);
  font-weight: 600;
  font-size: var(--fs-sm);
  color: var(--c-navy);
  border-radius: var(--r-md);
  transition: all var(--t-fast) var(--ease);
}
.nav__link:hover,
.nav__link[aria-expanded="true"] {
  background: var(--c-bg-alt);
  color: var(--c-navy);
  text-decoration: none;
}
.nav__caret {
  width: 10px;
  height: 10px;
  transition: transform var(--t-fast) var(--ease);
}
.nav__link[aria-expanded="true"] .nav__caret { transform: rotate(180deg); }

/* Dropdown */
.dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 280px;
  background: #fff;
  border: 1px solid var(--c-border-soft);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-lg);
  padding: var(--s-4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: opacity var(--t-base) var(--ease),
              transform var(--t-base) var(--ease),
              visibility var(--t-base) var(--ease);
  z-index: 1000;
}
.nav__item:hover > .dropdown,
.nav__item:focus-within > .dropdown,
.nav__link[aria-expanded="true"] + .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown__title {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-text-soft);
  margin: 0 0 var(--s-2);
  padding: 0 var(--s-3);
}
.dropdown__list {
  list-style: none;
  padding: 0; margin: 0;
}
.dropdown__list a {
  display: block;
  padding: 0.5rem var(--s-3);
  color: var(--c-text);
  font-size: var(--fs-sm);
  border-radius: var(--r-sm);
  transition: background var(--t-fast) var(--ease);
}
.dropdown__list a:hover { background: var(--c-bg-alt); color: var(--c-blue-600); text-decoration: none; }

.dropdown--wide {
  min-width: 520px;
  padding: var(--s-5);
}
.dropdown--mega {
  min-width: 760px;
  padding: var(--s-5);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-5);
}
.dropdown--wide .dropdown__list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: var(--s-4);
}
.dropdown__more {
  grid-column: 1 / -1;
  margin-top: var(--s-3);
  padding-top: var(--s-3);
  border-top: 1px solid var(--c-border-soft);
  font-size: var(--fs-sm);
  font-weight: 600;
}

/* Mobile nav toggle */
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  gap: 5px;
  padding: 10px;
  border-radius: var(--r-md);
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--c-navy);
  border-radius: 2px;
  transition: transform var(--t-base) var(--ease),
              opacity var(--t-fast) var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile drawer */
.mobile-nav {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  background: #fff;
  z-index: 99;
  overflow-y: auto;
  padding: var(--s-5);
  transform: translateX(100%);
  visibility: hidden;
  transition: transform var(--t-base) var(--ease), visibility var(--t-base) var(--ease);
}
.mobile-nav[aria-hidden="false"] { transform: translateX(0); visibility: visible; }
.mobile-nav details { border-bottom: 1px solid var(--c-border-soft); }
.mobile-nav summary {
  padding: var(--s-4) var(--s-1);
  font-weight: 700;
  color: var(--c-navy);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.mobile-nav summary::-webkit-details-marker { display: none; }
.mobile-nav summary::after {
  content: "+";
  font-weight: 400;
  font-size: 1.5rem;
  color: var(--c-text-soft);
  transition: transform var(--t-fast) var(--ease);
}
.mobile-nav details[open] summary::after { content: "−"; }
.mobile-nav details ul { list-style: none; padding: 0 0 var(--s-4) 0; margin: 0; }
.mobile-nav details li { margin: 0; }
.mobile-nav details a {
  display: block;
  padding: var(--s-2) var(--s-2);
  font-size: var(--fs-sm);
  color: var(--c-text);
}
.mobile-nav details a:hover { color: var(--c-blue); background: var(--c-bg-alt); border-radius: var(--r-sm); }

/* ─── 6. Hero (home + tool pages) ─────────────────────────────────────── */
.hero {
  position: relative;
  padding: var(--s-16) 0 var(--s-12);
  background:
    radial-gradient(1200px 500px at 50% -10%, var(--c-sky), transparent 60%),
    linear-gradient(180deg, #fafcff 0%, #ffffff 100%);
  text-align: center;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(46,111,242,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46,111,242,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 0%, black 25%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, black 25%, transparent 70%);
  pointer-events: none;
}
.hero > * { position: relative; }
.hero h1 {
  font-size: clamp(var(--fs-3xl), 5vw, var(--fs-5xl));
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.025em;
  margin-bottom: var(--s-5);
  max-width: 22ch;
  margin-inline: auto;
}
.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--c-blue) 0%, var(--c-navy) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__sub {
  font-size: clamp(var(--fs-md), 2vw, var(--fs-lg));
  color: var(--c-text-muted);
  max-width: 62ch;
  margin: 0 auto var(--s-8);
}
.hero__search {
  max-width: 640px;
  margin: 0 auto;
  position: relative;
}
.hero__search input {
  width: 100%;
  height: 60px;
  padding: 0 64px 0 var(--s-6);
  border: 1px solid var(--c-border);
  border-radius: var(--r-full);
  background: #fff;
  font-size: var(--fs-md);
  box-shadow: var(--sh-md);
  transition: all var(--t-fast) var(--ease);
}
.hero__search input:focus {
  outline: none;
  border-color: var(--c-blue);
  box-shadow: var(--sh-ring), var(--sh-md);
}
.hero__search button {
  position: absolute;
  top: 8px; right: 8px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--c-blue);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.hero__search button:hover { background: var(--c-blue-600); }
.hero__pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--s-2);
  margin-top: var(--s-5);
}
.hero__pills a {
  padding: 0.4rem 0.9rem;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-full);
  color: var(--c-text-muted);
  font-size: var(--fs-sm);
  transition: all var(--t-fast) var(--ease);
}
.hero__pills a:hover { color: var(--c-blue); border-color: var(--c-blue); text-decoration: none; }
.hero__trust {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  margin-top: var(--s-8);
  padding: var(--s-2) var(--s-5);
  background: var(--c-green-50);
  color: #0c6e58;
  border-radius: var(--r-full);
  font-size: var(--fs-sm);
  font-weight: 600;
}

/* Tool page hero variant */
.tool-hero {
  padding: var(--s-12) 0 var(--s-8);
  background: linear-gradient(180deg, var(--c-sky) 0%, #ffffff 100%);
  border-bottom: 1px solid var(--c-border-soft);
}
.tool-hero h1 {
  font-size: clamp(var(--fs-2xl), 3.5vw, var(--fs-4xl));
  letter-spacing: -0.02em;
  margin-bottom: var(--s-4);
}
.tool-hero__sub {
  font-size: var(--fs-lg);
  color: var(--c-text-muted);
  max-width: 62ch;
  margin: 0 0 var(--s-5);
}
.tool-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s-3);
  font-size: var(--fs-sm);
  color: var(--c-text-muted);
}
.tool-hero__meta .chip {
  background: #fff;
  border: 1px solid var(--c-border);
  padding: 0.3rem 0.7rem;
  border-radius: var(--r-full);
  color: var(--c-navy);
  font-weight: 600;
}

/* Breadcrumbs */
.breadcrumbs {
  font-size: var(--fs-sm);
  color: var(--c-text-muted);
  margin: 0 0 var(--s-4);
}
.breadcrumbs ol {
  list-style: none;
  padding: 0; margin: 0;
  display: flex; flex-wrap: wrap;
  gap: var(--s-2);
  align-items: center;
}
.breadcrumbs li + li::before {
  content: "›";
  margin-right: var(--s-2);
  color: var(--c-text-soft);
}
.breadcrumbs a { color: var(--c-text-muted); }
.breadcrumbs a:hover { color: var(--c-blue); }
.breadcrumbs [aria-current="page"] { color: var(--c-navy); font-weight: 600; }

/* ─── 7. Sections & grid ──────────────────────────────────────────────── */
.section { padding: var(--s-16) 0; }
.section--tight { padding: var(--s-10) 0; }
.section--alt { background: var(--c-bg-soft); }
.section__header { text-align: center; max-width: 720px; margin: 0 auto var(--s-10); }
.section__header h2 {
  font-size: clamp(var(--fs-2xl), 3vw, var(--fs-3xl));
  letter-spacing: -0.02em;
  margin-bottom: var(--s-3);
}
.section__header p { font-size: var(--fs-md); color: var(--c-text-muted); }

.grid { display: grid; gap: var(--s-5); }
.grid--tools { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* Tool card */
.tool-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: var(--s-5);
  background: #fff;
  border: 1px solid var(--c-border-soft);
  border-radius: var(--r-lg);
  transition: all var(--t-base) var(--ease);
  color: var(--c-text);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}
.tool-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(46,111,242,0.03), transparent 60%);
  opacity: 0;
  transition: opacity var(--t-base) var(--ease);
}
.tool-card:hover {
  border-color: var(--c-blue);
  transform: translateY(-2px);
  box-shadow: var(--sh-md);
  text-decoration: none;
  color: var(--c-text);
}
.tool-card:hover::before { opacity: 1; }
.tool-card__icon {
  width: 44px; height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--c-blue-50);
  color: var(--c-blue);
  font-weight: 700;
  border-radius: var(--r-md);
  font-size: 1.25rem;
  margin-bottom: var(--s-3);
  position: relative;
}
.tool-card h3 {
  font-size: var(--fs-md);
  font-weight: 700;
  margin-bottom: var(--s-2);
  letter-spacing: -0.01em;
  color: var(--c-navy);
  position: relative;
}
.tool-card p {
  font-size: var(--fs-sm);
  color: var(--c-text-muted);
  margin: 0;
  line-height: 1.5;
  position: relative;
}
.tool-card__cta {
  margin-top: auto;
  padding-top: var(--s-4);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--c-blue);
  position: relative;
}
.tool-card__cta::after {
  content: "→";
  transition: transform var(--t-fast) var(--ease);
}
.tool-card:hover .tool-card__cta::after { transform: translateX(4px); }

/* Category block on the directory */
.cat-block { margin-bottom: var(--s-12); scroll-margin-top: calc(var(--header-h) + var(--s-5)); }
.cat-block__head {
  display: flex;
  align-items: center;
  gap: var(--s-4);
  margin-bottom: var(--s-5);
  padding-bottom: var(--s-4);
  border-bottom: 1px solid var(--c-border-soft);
  flex-wrap: wrap;
}
.cat-block__title {
  font-size: var(--fs-xl);
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--c-navy);
}
.cat-block__icon {
  width: 44px; height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--c-blue) 0%, var(--c-navy) 100%);
  color: #fff;
  border-radius: var(--r-md);
  font-weight: 700;
}
.cat-block__count {
  margin-left: auto;
  font-size: var(--fs-sm);
  color: var(--c-text-muted);
  background: var(--c-bg-alt);
  padding: 0.3rem 0.7rem;
  border-radius: var(--r-full);
}

/* Calculator subgroup */
.subgroup { margin: var(--s-8) 0; }
.subgroup__title {
  font-size: var(--fs-md);
  font-weight: 700;
  color: var(--c-navy);
  margin: 0 0 var(--s-4);
  padding-left: var(--s-3);
  border-left: 3px solid var(--c-blue);
}

/* ─── 8. Category jump-strip (sticky) ─────────────────────────────────── */
.cat-jump {
  position: sticky;
  top: var(--header-h);
  z-index: 20;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--c-border-soft);
  padding: var(--s-3) 0;
  overflow-x: auto;
  white-space: nowrap;
}
.cat-jump::-webkit-scrollbar { height: 0; }
.cat-jump__list {
  display: inline-flex;
  gap: var(--s-2);
  list-style: none;
  margin: 0;
  padding: 0 var(--s-5);
}
.cat-jump__list a {
  display: inline-block;
  padding: 0.4rem 0.9rem;
  background: var(--c-bg-alt);
  color: var(--c-navy);
  font-size: var(--fs-sm);
  font-weight: 600;
  border-radius: var(--r-full);
  transition: all var(--t-fast) var(--ease);
}
.cat-jump__list a:hover { background: var(--c-blue); color: #fff; text-decoration: none; }

/* ─── 9. Forms / tool UI ──────────────────────────────────────────────── */
.card {
  background: #fff;
  border: 1px solid var(--c-border-soft);
  border-radius: var(--r-xl);
  padding: var(--s-6);
  box-shadow: var(--sh-sm);
}
.card--tool {
  padding: clamp(var(--s-5), 3vw, var(--s-8));
  border-radius: var(--r-xl);
  border-color: var(--c-border);
}

.field { margin-bottom: var(--s-4); }
.field label { display: block; font-size: var(--fs-sm); font-weight: 600; margin-bottom: var(--s-2); color: var(--c-navy); }
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  background: #fff;
  transition: border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--c-blue);
  box-shadow: var(--sh-ring);
}
.field textarea {
  min-height: 160px;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  resize: vertical;
}
.field__row {
  display: grid;
  gap: var(--s-4);
  grid-template-columns: 1fr 1fr;
}
.field__hint {
  font-size: var(--fs-xs);
  color: var(--c-text-soft);
  margin-top: var(--s-2);
}

.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  margin-top: var(--s-4);
}

.result {
  margin-top: var(--s-5);
  padding: var(--s-5);
  background: linear-gradient(135deg, var(--c-blue-50), #fff);
  border: 1px solid var(--c-blue);
  border-radius: var(--r-lg);
}
.result__label {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-blue);
  margin-bottom: var(--s-2);
}
.result__value {
  font-size: var(--fs-2xl);
  font-weight: 800;
  color: var(--c-navy);
  letter-spacing: -0.02em;
  word-break: break-all;
}
.result__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--s-2) 0;
  border-bottom: 1px solid rgba(46,111,242,0.2);
}
.result__row:last-child { border-bottom: 0; }
.result__row > span:first-child { color: var(--c-text-muted); font-size: var(--fs-sm); }
.result__row > span:last-child { font-weight: 700; color: var(--c-navy); }

.copy-btn {
  font-size: var(--fs-sm);
  color: var(--c-blue);
  font-weight: 600;
  padding: 0.35rem 0.7rem;
  border-radius: var(--r-sm);
}
.copy-btn:hover { background: var(--c-blue-50); }
.copy-btn.is-copied { color: var(--c-green); }

/* Toggle / tabs */
.tabs { display: inline-flex; padding: 4px; background: var(--c-bg-alt); border-radius: var(--r-full); margin-bottom: var(--s-5); }
.tabs button {
  padding: 0.5rem var(--s-4);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--c-text-muted);
  border-radius: var(--r-full);
  transition: all var(--t-fast) var(--ease);
}
.tabs button.is-active { background: #fff; color: var(--c-navy); box-shadow: var(--sh-xs); }

/* Callout */
.callout {
  padding: var(--s-4) var(--s-5);
  background: var(--c-blue-50);
  border-left: 4px solid var(--c-blue);
  border-radius: var(--r-md);
  color: var(--c-navy);
  margin: var(--s-5) 0;
  font-size: var(--fs-sm);
}
.callout--warn { background: #fff4e0; border-color: var(--c-amber); color: #7a4a00; }
.callout--danger { background: #ffe8ea; border-color: var(--c-red); color: #7a1923; }

/* ─── 10. Content sections on tool pages ──────────────────────────────── */
.content-section { padding: var(--s-12) 0; }
.content-section:nth-child(even) { background: var(--c-bg-soft); }
.content-section h2 {
  font-size: clamp(var(--fs-xl), 2.4vw, var(--fs-2xl));
  letter-spacing: -0.02em;
  margin-bottom: var(--s-5);
}
.content-section h3 {
  font-size: var(--fs-lg);
  font-weight: 700;
  margin: var(--s-6) 0 var(--s-3);
  color: var(--c-navy);
}
.content-section p { font-size: var(--fs-md); color: var(--c-text-muted); line-height: var(--lh-loose); max-width: 72ch; }
.content-section ul, .content-section ol { max-width: 72ch; color: var(--c-text-muted); line-height: var(--lh-loose); }

.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  display: grid;
  gap: var(--s-4);
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.steps li {
  position: relative;
  padding: var(--s-5);
  padding-top: calc(var(--s-5) + 20px);
  background: #fff;
  border: 1px solid var(--c-border-soft);
  border-radius: var(--r-lg);
  counter-increment: step;
}
.steps li::before {
  content: counter(step);
  position: absolute;
  top: -18px;
  left: var(--s-5);
  width: 36px; height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--c-blue);
  color: #fff;
  font-weight: 700;
  border-radius: 50%;
  box-shadow: 0 4px 10px rgba(46,111,242,0.3);
}
.steps h3 {
  font-size: var(--fs-md);
  margin: 0 0 var(--s-2);
}

.benefits {
  list-style: none;
  padding: 0;
  display: grid;
  gap: var(--s-4);
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.benefits li {
  display: flex;
  gap: var(--s-3);
  align-items: flex-start;
  padding: var(--s-4);
  background: #fff;
  border: 1px solid var(--c-border-soft);
  border-radius: var(--r-md);
}
.benefits li::before {
  content: "✓";
  flex: 0 0 28px;
  width: 28px; height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--c-green);
  color: #fff;
  font-weight: 700;
  border-radius: 50%;
  font-size: 0.9rem;
}

/* FAQ accordion */
.faq { margin-top: var(--s-6); }
.faq details {
  background: #fff;
  border: 1px solid var(--c-border-soft);
  border-radius: var(--r-lg);
  margin-bottom: var(--s-3);
  transition: box-shadow var(--t-fast) var(--ease);
}
.faq details[open] { box-shadow: var(--sh-sm); border-color: var(--c-blue); }
.faq summary {
  padding: var(--s-4) var(--s-5);
  font-weight: 700;
  font-size: var(--fs-md);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--s-4);
  color: var(--c-navy);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  flex: 0 0 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--c-blue-50);
  color: var(--c-blue);
  font-size: 1.3rem;
  font-weight: 400;
  transition: transform var(--t-base) var(--ease);
}
.faq details[open] summary::after { content: "−"; }
.faq__body {
  padding: 0 var(--s-5) var(--s-5);
  color: var(--c-text-muted);
  line-height: var(--lh-loose);
  font-size: var(--fs-sm);
}
.faq__body p { font-size: inherit; }

/* USP strip */
.usp-strip { background: #fff; border-top: 1px solid var(--c-border-soft); border-bottom: 1px solid var(--c-border-soft); }
.usp-strip__inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--s-5);
  padding: var(--s-8) 0;
}
.usp {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--s-3);
}
.usp__icon {
  width: 44px; height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--c-blue-50);
  color: var(--c-blue);
  border-radius: var(--r-md);
  font-size: 1.2rem;
}
.usp h3 { font-size: var(--fs-md); margin: 0 0 var(--s-1); }
.usp p { font-size: var(--fs-sm); color: var(--c-text-muted); margin: 0; line-height: 1.5; }

/* ─── 11. Related tools (internal linking block) ──────────────────────── */
.related {
  padding: var(--s-12) 0;
  background: var(--c-bg-soft);
  border-top: 1px solid var(--c-border-soft);
}
.related__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: var(--s-6);
  gap: var(--s-4);
  flex-wrap: wrap;
}
.related__header h2 { margin: 0; font-size: var(--fs-xl); }
.related__header p { margin: 0; color: var(--c-text-muted); font-size: var(--fs-sm); }

/* ─── 12. CTA strip ───────────────────────────────────────────────────── */
.cta-strip {
  background: linear-gradient(135deg, var(--c-navy) 0%, var(--c-navy-700) 100%);
  color: #fff;
  padding: var(--s-16) 0;
  position: relative;
  overflow: hidden;
}
.cta-strip::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(46,111,242,0.3), transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(0,184,148,0.2), transparent 40%);
  pointer-events: none;
}
.cta-strip .container { position: relative; text-align: center; }
.cta-strip h2 {
  color: #fff;
  font-size: clamp(var(--fs-2xl), 3vw, var(--fs-3xl));
  max-width: 26ch;
  margin: 0 auto var(--s-4);
}
.cta-strip p { color: rgba(255,255,255,0.78); max-width: 52ch; margin: 0 auto var(--s-6); font-size: var(--fs-md); }

/* ─── 13. Footer ──────────────────────────────────────────────────────── */
.site-footer {
  background: var(--c-navy);
  color: rgba(255,255,255,0.75);
  padding: var(--s-16) 0 var(--s-6);
}
.site-footer a { color: rgba(255,255,255,0.75); }
.site-footer a:hover { color: #fff; text-decoration: none; }
.footer__grid {
  display: grid;
  gap: var(--s-8);
  grid-template-columns: 2fr repeat(4, 1fr);
  margin-bottom: var(--s-12);
}
.footer__brand { max-width: 320px; }
.footer__brand .brand { color: #fff; margin-bottom: var(--s-4); }
.footer__brand .brand__tld { color: var(--c-blue); }
.footer__brand p { font-size: var(--fs-sm); color: rgba(255,255,255,0.6); line-height: var(--lh-loose); }
.footer__social {
  display: flex;
  gap: var(--s-3);
  margin-top: var(--s-4);
}
.footer__social a {
  width: 36px; height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
  transition: all var(--t-fast) var(--ease);
}
.footer__social a:hover { background: var(--c-blue); }
.footer__social svg { width: 16px; height: 16px; fill: currentColor; }

.footer__col h4 {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: #fff;
  margin: 0 0 var(--s-4);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.footer__col ul { list-style: none; padding: 0; margin: 0; }
.footer__col li { margin-bottom: var(--s-2); }
.footer__col a { font-size: var(--fs-sm); }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--s-5);
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: var(--fs-sm);
  flex-wrap: wrap;
  gap: var(--s-3);
}
.footer__bottom p { margin: 0; color: rgba(255,255,255,0.5); }
.footer__bottom nav { display: flex; gap: var(--s-4); flex-wrap: wrap; }

/* ─── 14. Utility pages (legal) ───────────────────────────────────────── */
.article {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--s-12) 0;
}
.article h1 { font-size: clamp(var(--fs-2xl), 3vw, var(--fs-3xl)); margin-bottom: var(--s-3); }
.article .text-muted { margin-bottom: var(--s-8); }
.article h2 { margin-top: var(--s-10); font-size: var(--fs-xl); }
.article p { font-size: var(--fs-md); color: var(--c-text-muted); line-height: var(--lh-loose); }

/* ─── 15. Responsive breakpoints ──────────────────────────────────────── */
@media (max-width: 767px) {
  :root { --header-h: 62px; }
  .hero { padding: var(--s-10) 0 var(--s-8); }
  .section { padding: var(--s-10) 0; }
  .content-section { padding: var(--s-8) 0; }
  .cta-strip { padding: var(--s-10) 0; }
  .site-footer { padding: var(--s-10) 0 var(--s-5); }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: var(--s-6); }
  .footer__brand { grid-column: 1 / -1; }
  .footer__bottom { flex-direction: column; text-align: center; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .usp-strip__inner { grid-template-columns: 1fr 1fr; }
  .field__row { grid-template-columns: 1fr; }
  .hero__search input { height: 54px; padding-right: 56px; font-size: var(--fs-base); }
  .hero__search button { width: 38px; height: 38px; top: 8px; right: 8px; }
  .dropdown--mega { grid-template-columns: 1fr; min-width: 0; }
}

@media (min-width: 768px) {
  .nav { display: block; }
  .nav-toggle { display: none; }
  .mobile-nav { display: none; }
}

@media (min-width: 1024px) {
  .container { padding: 0 var(--s-8); }
  .hero { padding: var(--s-24) 0 var(--s-16); }
  .section { padding: var(--s-20) 0; }
}

@media (max-width: 1023px) {
  .usp-strip__inner { grid-template-columns: 1fr 1fr; row-gap: var(--s-6); }
  .footer__grid { grid-template-columns: 2fr 1fr 1fr; }
  .footer__col:nth-child(5) { display: none; }
}

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

/* Print — bare minimum */
@media print {
  .site-header, .site-footer, .cta-strip, .related, .cat-jump, .hero__search, .nav-toggle { display: none; }
  body { background: #fff; color: #000; }
  a { color: #000; text-decoration: underline; }
}