/* =========================================================
   28Tools – Global Design System
   ========================================================= */

/* 1. Imports */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* 2. Custom Properties */
:root {
  /* Colors: Professional Dark Slate / Obsidian Theme */
  --bg-950: #07090e;
  --bg-900: #0d121f;
  --bg-800: #151d30;
  --bg-700: #1f2b45;
  --bg-600: #2d3d5f;
  --surface: #0d121f;
  --surface-hover: #151d30;
  --border: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.14);
  --border-subtle: rgba(255, 255, 255, 0.04);

  /* Accent: Vibrant Indigo / Violet + Cyan Glow */
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --accent-dim: rgba(99, 102, 241, 0.15);
  --accent-glow: rgba(99, 102, 241, 0.25);
  --accent-2: #06b6d4;
  --accent-3: #ec4899;

  /* Text: High Contrast & Maximum Readability */
  --text-100: #f8fafc;
  --text-200: #cbd5e1;
  --text-300: #94a3b8;
  --text-400: #64748b;

  /* Semantic */
  --success: #10b981;
  --success-dim: rgba(16, 185, 129, 0.15);
  --warning: #f59e0b;
  --warning-dim: rgba(245, 158, 11, 0.15);
  --danger: #ef4444;
  --danger-dim: rgba(239, 68, 68, 0.15);
  --info: #0284c7;

  /* Category colors */
  --cat-calc: #818cf8;
  --cat-pdf: #f87171;
  --cat-gen: #34d399;
  --cat-health: #fbbf24;
  --cat-text: #38bdf8;
  --cat-conv: #e879f9;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 999px;

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'Fira Code', 'Cascadia Code', monospace;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-base: 250ms;
  --duration-slow: 400ms;

  /* Shadows for Dark Theme */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px -2px rgba(0, 0, 0, 0.4), 0 2px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 16px 32px -4px rgba(0, 0, 0, 0.5), 0 4px 12px -2px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 25px var(--accent-glow);

  /* Nav */
  --nav-height: 64px;
}

/* 3. Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-950);
  color: var(--text-200);
  line-height: 1.6;
  min-height: 100dvh;
  overflow-x: hidden;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.12), transparent),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(6, 182, 212, 0.08), transparent);
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, select, textarea { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { color: var(--text-100); font-weight: 700; line-height: 1.25; }

/* 4. Typography Scale */
.text-xs  { font-size: 0.75rem; }
.text-sm  { font-size: 0.875rem; }
.text-base{ font-size: 1rem; }
.text-lg  { font-size: 1.125rem; }
.text-xl  { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.text-4xl { font-size: 2.25rem; }
.text-5xl { font-size: 3rem; }

.font-medium  { font-weight: 500; }
.font-semibold{ font-weight: 600; }
.font-bold    { font-weight: 700; }
.font-extrabold{ font-weight: 800; }

.text-muted   { color: var(--text-300); }
.text-dim     { color: var(--text-400); }
.text-accent  { color: var(--accent); }
.text-success { color: var(--success); }
.text-danger  { color: var(--danger); }
.text-warning { color: var(--warning); }

/* 5. Layout */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}
@media (min-width: 640px)  { .container { padding: 0 var(--space-lg); } }
@media (min-width: 1024px) { .container { padding: 0 var(--space-xl); } }

/* 6. Navigation */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background: rgba(7, 9, 14, 0.85);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
}
.nav__inner {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  width: 100%;
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text-100);
  flex-shrink: 0;
  transition: opacity var(--duration-fast);
}
.nav__logo:hover { opacity: 0.85; }
.nav__logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  font-weight: 900;
  color: #ffffff;
  letter-spacing: -0.5px;
  line-height: 1;
  box-shadow: 0 0 12px var(--accent-glow);
  user-select: none;
}
.nav__search {
  flex: 1;
  max-width: 480px;
  position: relative;
  margin: 0 auto;
}
.nav__search-input {
  width: 100%;
  height: 40px;
  padding: 0 var(--space-md) 0 2.75rem;
  background: var(--bg-800);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text-100);
  font-size: 0.875rem;
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
  outline: none;
}
.nav__search-input::placeholder { color: var(--text-400); }
.nav__search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.nav__search-icon {
  position: absolute;
  left: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-400);
  pointer-events: none;
  font-size: 1rem;
}
.nav__search-kbd {
  position: absolute;
  right: var(--space-sm);
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.6875rem;
  color: var(--text-400);
  background: var(--bg-700);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  font-family: var(--font-mono);
  display: none;
}
@media (min-width: 768px) { .nav__search-kbd { display: block; } }
.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
  margin-left: auto;
}

/* 7. Hero */
.hero {
  text-align: center;
  padding: var(--space-3xl) var(--space-md) var(--space-2xl);
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-md);
  background: var(--accent-dim);
  border: 1px solid hsl(252, 87%, 68%, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
  animation: fadeSlideDown 0.5s var(--ease-out) both;
}
.hero__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-100);
  margin-bottom: var(--space-md);
  animation: fadeSlideDown 0.5s 0.1s var(--ease-out) both;
}
.hero__title .gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--accent-2), var(--accent-3));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero__sub {
  font-size: 1.0625rem;
  color: var(--text-300);
  max-width: 560px;
  margin: 0 auto var(--space-xl);
  line-height: 1.7;
  animation: fadeSlideDown 0.5s 0.2s var(--ease-out) both;
}
.hero__stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  animation: fadeSlideDown 0.5s 0.3s var(--ease-out) both;
}
.hero__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.hero__stat-num {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent);
}
.hero__stat-lbl {
  font-size: 0.75rem;
  color: var(--text-400);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.hero__divider { width: 1px; height: 36px; background: var(--border); }

/* 8. Category Chips */
.categories {
  padding: 0 0 var(--space-xl);
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.categories::-webkit-scrollbar { display: none; }
.categories__inner {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  width: max-content;
  margin: 0 auto;
}
@media (min-width: 768px) {
  .categories__inner { width: 100%; flex-wrap: wrap; justify-content: center; }
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 500;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-300);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
}
.chip:hover { border-color: var(--border-light); color: var(--text-100); background: var(--bg-800); }
.chip.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}
.chip[data-cat="calculators"].active { background: rgba(99, 102, 241, 0.1); border-color: var(--cat-calc); color: var(--cat-calc); }
.chip[data-cat="pdf"].active        { background: rgba(239, 68, 68, 0.1); border-color: var(--cat-pdf); color: var(--cat-pdf); }
.chip[data-cat="generators"].active { background: rgba(16, 185, 129, 0.1); border-color: var(--cat-gen); color: var(--cat-gen); }
.chip[data-cat="health"].active     { background: rgba(245, 158, 11, 0.1); border-color: var(--cat-health); color: var(--cat-health); }
.chip[data-cat="text"].active       { background: rgba(2, 132, 199, 0.1); border-color: var(--cat-text); color: var(--cat-text); }
.chip[data-cat="converters"].active { background: rgba(217, 70, 239, 0.1); border-color: var(--cat-conv); color: var(--cat-conv); }

/* 9. Section Headers */
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}
.section-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-100);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.section-title::before {
  content: '';
  display: block;
  width: 3px;
  height: 1em;
  background: linear-gradient(to bottom, var(--accent), var(--accent-2));
  border-radius: 2px;
}

/* 10. Tool Cards */
.tools-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}
@media (min-width: 480px)  { .tools-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 768px)  { .tools-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1100px) { .tools-grid { grid-template-columns: repeat(4, 1fr); } }

.tool-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  cursor: pointer;
  transition: transform var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out),
              border-color var(--duration-base) var(--ease-out),
              background var(--duration-base);
  text-decoration: none;
  overflow: hidden;
  animation: cardIn 0.4s var(--ease-out) both;
}
.tool-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--card-accent, var(--accent)), transparent 60%);
  opacity: 0;
  transition: opacity var(--duration-base);
  border-radius: inherit;
}
.tool-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg), 0 0 0 1px var(--border-light);
  border-color: var(--border-light);
  background: var(--surface-hover);
}
.tool-card:hover::before { opacity: 0.04; }
.tool-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.tool-card__fav {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  background: transparent;
  transition: all var(--duration-fast);
  z-index: 1;
  opacity: 0.4;
}
.tool-card:hover .tool-card__fav,
.tool-card__fav.active { opacity: 1; }
.tool-card__fav.active { color: #facc15; }
.tool-card__fav:hover { background: var(--bg-700); opacity: 1; }

.tool-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.375rem;
  flex-shrink: 0;
  margin-bottom: var(--space-xs);
}
.tool-card__cat-indicator {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  width: fit-content;
}
.tool-card__title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-100);
  line-height: 1.3;
}
.tool-card__desc {
  font-size: 0.8125rem;
  color: var(--text-300);
  line-height: 1.55;
  flex: 1;
}
.tool-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-xs);
  gap: var(--space-sm);
}
.tool-card__privacy {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.6875rem;
  color: var(--success);
  font-weight: 500;
}
.tool-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  transition: gap var(--duration-fast);
}
.tool-card:hover .tool-card__cta { gap: 8px; }

/* Category icon backgrounds */
.icon-calc    { background: hsl(252,87%,68%,0.15); color: var(--cat-calc); }
.icon-pdf     { background: hsl(0,72%,60%,0.15);   color: var(--cat-pdf); }
.icon-gen     { background: hsl(142,65%,50%,0.15); color: var(--cat-gen); }
.icon-health  { background: hsl(38,92%,55%,0.15);  color: var(--cat-health); }
.icon-text    { background: hsl(190,80%,55%,0.15); color: var(--cat-text); }
.icon-conv    { background: hsl(320,75%,60%,0.15); color: var(--cat-conv); }

.badge-calc   { background: hsl(252,87%,68%,0.12); color: var(--cat-calc); }
.badge-pdf    { background: hsl(0,72%,60%,0.12);   color: var(--cat-pdf); }
.badge-gen    { background: hsl(142,65%,50%,0.12); color: var(--cat-gen); }
.badge-health { background: hsl(38,92%,55%,0.12);  color: var(--cat-health); }
.badge-text   { background: hsl(190,80%,55%,0.12); color: var(--cat-text); }
.badge-conv   { background: hsl(320,75%,60%,0.12); color: var(--cat-conv); }

/* Popular badge */
.popular-badge {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  background: linear-gradient(135deg, #f59e0b, #ef4444);
  color: white;
  font-size: 0.5625rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* 11. Tool Page Layout */
.tool-page {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}
.tool-page__body { flex: 1; }

.tool-hero {
  padding: var(--space-2xl) 0 var(--space-xl);
  border-bottom: 1px solid var(--border);
}
.tool-hero__breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.8125rem;
  color: var(--text-400);
  margin-bottom: var(--space-md);
}
.tool-hero__breadcrumb a { color: var(--accent); }
.tool-hero__breadcrumb a:hover { text-decoration: underline; }
.tool-hero__breadcrumb span { color: var(--text-400); }

.tool-hero__header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
}
.tool-hero__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  flex-shrink: 0;
}
.tool-hero__info { flex: 1; }
.tool-hero__title {
  font-size: clamp(1.375rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-xs);
}
.tool-hero__desc {
  font-size: 0.9375rem;
  color: var(--text-300);
  line-height: 1.6;
  max-width: 600px;
}
.tool-hero__meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-md);
  flex-wrap: wrap;
}

/* 12. Tool Workspace */
.tool-workspace {
  padding: var(--space-2xl) 0;
}
.tool-card-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  position: relative;
  overflow: hidden;
}
.tool-card-panel::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

/* 13. Form Controls */
.form-group { display: flex; flex-direction: column; gap: var(--space-xs); }
.form-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-200);
}
.form-label .optional { font-weight: 400; color: var(--text-400); font-size: 0.75rem; }
.form-input,
.form-select,
.form-textarea {
  background: var(--bg-800);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 10px var(--space-md);
  color: var(--text-100);
  font-size: 0.9375rem;
  outline: none;
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
  width: 100%;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.form-input.error  { border-color: var(--danger); box-shadow: 0 0 0 3px var(--danger-dim); }
.form-input.success{ border-color: var(--success); }
.form-textarea { resize: vertical; min-height: 140px; line-height: 1.6; }
.form-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }
.form-hint { font-size: 0.75rem; color: var(--text-400); }
.form-error { font-size: 0.75rem; color: var(--danger); display: none; }
.form-error.visible { display: block; }

/* Grid layouts for forms */
.form-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); }
.form-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); }
@media (max-width: 600px) {
  .form-grid-2 { grid-template-columns: 1fr; }
  .form-grid-3 { grid-template-columns: 1fr; }
}

/* 14. Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 10px var(--space-lg);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 600;
  transition: all var(--duration-fast) var(--ease-out);
  cursor: pointer;
  border: 1px solid transparent;
  outline: none;
  line-height: 1;
  white-space: nowrap;
  font-family: inherit;
}
.btn:focus-visible { box-shadow: 0 0 0 3px var(--accent-dim); }
.btn:active { transform: scale(0.98); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), hsl(252, 87%, 60%));
  color: white;
  box-shadow: 0 2px 12px var(--accent-glow);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-hover), var(--accent));
  box-shadow: 0 4px 20px var(--accent-glow);
  transform: translateY(-1px);
}
.btn-secondary {
  background: var(--bg-700);
  color: var(--text-200);
  border-color: var(--border);
}
.btn-secondary:hover { background: var(--bg-600); border-color: var(--border-light); color: var(--text-100); }
.btn-ghost {
  background: transparent;
  color: var(--text-300);
  border-color: var(--border);
}
.btn-ghost:hover { background: var(--bg-800); color: var(--text-200); }
.btn-danger {
  background: var(--danger-dim);
  color: var(--danger);
  border-color: hsl(0,72%,58%,0.3);
}
.btn-danger:hover { background: hsl(0,72%,58%,0.2); }
.btn-sm { padding: 7px var(--space-md); font-size: 0.8125rem; }
.btn-lg { padding: 14px var(--space-xl); font-size: 1rem; }
.btn-icon { width: 36px; height: 36px; padding: 0; border-radius: var(--radius-md); }
.btn-full { width: 100%; }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; transform: none !important; }

/* 15. Result Cards */
.result-card {
  background: var(--bg-900);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  animation: fadeIn 0.3s var(--ease-out);
}
.result-card.success { border-color: hsl(142,70%,50%,0.3); background: hsl(142,70%,50%,0.05); }
.result-card.warning { border-color: hsl(38,92%,55%,0.3); background: hsl(38,92%,55%,0.05); }
.result-card.error   { border-color: hsl(0,72%,58%,0.3);  background: hsl(0,72%,58%,0.05);  }
.result-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-100);
  letter-spacing: -0.02em;
}
.result-label { font-size: 0.8125rem; color: var(--text-400); margin-top: 2px; }

.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-md);
}

/* 16. Alerts & States */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  border: 1px solid;
}
.alert-success { background: var(--success-dim); border-color: hsl(142,70%,50%,0.3); color: var(--success); }
.alert-warning { background: var(--warning-dim); border-color: hsl(38,92%,55%,0.3); color: var(--warning); }
.alert-error   { background: var(--danger-dim);  border-color: hsl(0,72%,58%,0.3);  color: var(--danger); }
.alert-info    { background: hsl(200,80%,55%,0.1); border-color: hsl(200,80%,55%,0.3); color: var(--info); }

/* 17. Empty State */
.empty-state {
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}
.empty-state__icon { font-size: 3rem; opacity: 0.4; }
.empty-state__title { font-size: 1.125rem; font-weight: 600; color: var(--text-200); }
.empty-state__desc  { font-size: 0.875rem; color: var(--text-400); max-width: 320px; }

/* 18. Slider */
.slider-wrapper { display: flex; align-items: center; gap: var(--space-md); }
.slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  border-radius: 3px;
  background: var(--bg-700);
  outline: none;
  cursor: pointer;
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 0 8px var(--accent-glow);
  transition: box-shadow var(--duration-fast);
}
.slider::-webkit-slider-thumb:hover { box-shadow: 0 0 14px var(--accent-glow); }
.slider-val {
  min-width: 40px;
  text-align: right;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
}

/* 19. Upload Zone */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  text-align: center;
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-out);
  position: relative;
}
.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--accent);
  background: var(--accent-dim);
}
.upload-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}
.upload-zone__icon { font-size: 2.5rem; margin-bottom: var(--space-sm); opacity: 0.6; }
.upload-zone__title { font-size: 1rem; font-weight: 600; color: var(--text-200); margin-bottom: var(--space-xs); }
.upload-zone__sub   { font-size: 0.8125rem; color: var(--text-400); }

/* 20. Code block */
.code-block {
  background: var(--bg-950);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-200);
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.7;
  max-height: 400px;
  position: relative;
}

/* 21. Tab Bar */
.tabs {
  display: flex;
  gap: 2px;
  background: var(--bg-900);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tab {
  flex: 1;
  min-width: max-content;
  padding: 8px var(--space-md);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-400);
  cursor: pointer;
  transition: all var(--duration-fast);
  text-align: center;
  border: 1px solid transparent;
}
.tab:hover  { color: var(--text-200); background: var(--bg-800); }
.tab.active { background: var(--accent-dim); color: var(--accent); border-color: hsl(252,87%,68%,0.25); }

/* 22. Progress Bar */
.progress-bar {
  height: 6px;
  background: var(--bg-700);
  border-radius: 3px;
  overflow: hidden;
}
.progress-bar__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: inherit;
  transition: width 0.6s var(--ease-out);
}

/* 23. Copy Button State */
.copy-btn { transition: all var(--duration-fast); }
.copy-btn.copied { color: var(--success) !important; border-color: var(--success) !important; }

/* 24. Color Swatch */
.swatch {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  border: 2px solid var(--border);
  cursor: pointer;
  transition: transform var(--duration-fast);
}
.swatch:hover { transform: scale(1.1); }

/* 25. Toggle Switch */
.toggle {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  user-select: none;
}
.toggle input { display: none; }
.toggle__track {
  width: 40px;
  height: 22px;
  background: var(--bg-700);
  border-radius: var(--radius-full);
  position: relative;
  transition: background var(--duration-fast);
  flex-shrink: 0;
}
.toggle input:checked + .toggle__track { background: var(--accent); }
.toggle__thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  background: white;
  border-radius: 50%;
  transition: transform var(--duration-fast) var(--ease-spring);
  box-shadow: var(--shadow-sm);
}
.toggle input:checked ~ .toggle__track .toggle__thumb { transform: translateX(18px); }

/* 26. Separator */
.separator { height: 1px; background: var(--border); margin: var(--space-xl) 0; }

/* 27. Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: var(--space-2xl) 0 var(--space-xl);
  margin-top: var(--space-2xl);
  background: var(--bg-900);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}
@media (min-width: 640px) { .footer__grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .footer__grid { grid-template-columns: 2fr 1fr 1fr 1fr; } }
.footer__brand-desc { font-size: 0.875rem; color: var(--text-400); margin-top: var(--space-sm); line-height: 1.6; }
.footer__col-title { font-size: 0.8125rem; font-weight: 700; color: var(--text-200); margin-bottom: var(--space-md); text-transform: uppercase; letter-spacing: 0.06em; }
.footer__links { display: flex; flex-direction: column; gap: var(--space-sm); }
.footer__link { font-size: 0.875rem; color: var(--text-400); transition: color var(--duration-fast); }
.footer__link:hover { color: var(--text-200); }
.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
}
.footer__copy { font-size: 0.8125rem; color: var(--text-400); }

/* 28. Search Overlay */
.search-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 10vh;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-base);
}
.search-overlay.open { opacity: 1; pointer-events: all; }
.search-overlay__box {
  width: 100%;
  max-width: 600px;
  margin: 0 var(--space-md);
  background: var(--surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transform: translateY(-12px);
  transition: transform var(--duration-base) var(--ease-out);
}
.search-overlay.open .search-overlay__box { transform: none; }
.search-overlay__input-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border);
}
.search-overlay__input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-100);
  font-size: 1.125rem;
  outline: none;
}
.search-overlay__input::placeholder { color: var(--text-400); }
.search-overlay__results { max-height: 380px; overflow-y: auto; padding: var(--space-sm); }
.search-result-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--duration-fast);
  text-decoration: none;
}
.search-result-item:hover,
.search-result-item.highlighted { background: var(--bg-800); }
.search-result-item__icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}
.search-result-item__title { font-size: 0.9375rem; font-weight: 600; color: var(--text-100); }
.search-result-item__sub   { font-size: 0.75rem; color: var(--text-400); }
.search-overlay__footer {
  padding: var(--space-sm) var(--space-lg);
  border-top: 1px solid var(--border);
  display: flex;
  gap: var(--space-md);
  font-size: 0.75rem;
  color: var(--text-400);
}
.search-overlay__footer kbd {
  background: var(--bg-700);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  font-family: var(--font-mono);
}

/* 29. Canvas container */
.canvas-container {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  background: var(--bg-950);
}
canvas { max-width: 100%; display: block; }

/* 30. Chart/Table */
.data-table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.data-table th {
  text-align: left;
  padding: var(--space-sm) var(--space-md);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-400);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
}
.data-table td {
  padding: var(--space-sm) var(--space-md);
  color: var(--text-200);
  border-bottom: 1px solid var(--border);
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--bg-800); }
.data-table-wrap { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--border); }

/* 31. Color Picker */
input[type="color"] {
  appearance: none;
  -webkit-appearance: none;
  width: 48px;
  height: 48px;
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  padding: 0;
  background: none;
}
input[type="color"]::-webkit-color-swatch-wrapper { padding: 3px; }
input[type="color"]::-webkit-color-swatch { border-radius: 6px; border: none; }

/* 32. Range number input pair */
.range-pair {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-md);
  align-items: center;
}
.range-number {
  width: 80px;
  text-align: center;
}

/* 33. Animations */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeSlideDown { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }
@keyframes fadeSlideUp   { from { opacity: 0; transform: translateY(8px); }  to { opacity: 1; transform: none; } }
@keyframes cardIn        { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
@keyframes spin          { to { transform: rotate(360deg); } }
@keyframes pulse         { 0%,100% { opacity: 1; } 50% { opacity: 0.5; } }
@keyframes shimmer {
  from { background-position: -200% center; }
  to   { background-position:  200% center; }
}

/* Stagger card animations */
.tools-grid .tool-card:nth-child(1)  { animation-delay: 0.04s; }
.tools-grid .tool-card:nth-child(2)  { animation-delay: 0.08s; }
.tools-grid .tool-card:nth-child(3)  { animation-delay: 0.12s; }
.tools-grid .tool-card:nth-child(4)  { animation-delay: 0.16s; }
.tools-grid .tool-card:nth-child(5)  { animation-delay: 0.20s; }
.tools-grid .tool-card:nth-child(6)  { animation-delay: 0.24s; }
.tools-grid .tool-card:nth-child(7)  { animation-delay: 0.28s; }
.tools-grid .tool-card:nth-child(8)  { animation-delay: 0.32s; }
.tools-grid .tool-card:nth-child(n+9){ animation-delay: 0.36s; }

/* Loader */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}

/* 34. Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* 35. Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-900); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-400); }

/* 36. Selection */
::selection { background: var(--accent-dim); color: var(--text-100); }

/* 37. Utility classes */
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.hidden { display: none !important; }
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.w-full { width: 100%; }

/* Tool page related tools grid */
.related-tools { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: var(--space-md); }

/* 38. Range (slider) input */
.slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: var(--bg-700);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 0 0 3px var(--accent-dim);
  transition: box-shadow var(--duration-fast);
}
.slider::-webkit-slider-thumb:hover { box-shadow: 0 0 0 5px var(--accent-dim); }
.slider::-moz-range-thumb { width: 18px; height: 18px; border-radius: 50%; background: var(--accent); cursor: pointer; border: none; }

/* 39. Canvas / image preview container */
.canvas-container {
  background: var(--bg-900);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
}

/* 40. Data Table */
.data-table-wrap { overflow-x: auto; border-radius: var(--radius-md); border: 1px solid var(--border); }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.data-table th { background: var(--bg-800); color: var(--text-300); font-weight: 600; padding: var(--space-sm) var(--space-md); text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
.data-table td { padding: var(--space-sm) var(--space-md); color: var(--text-200); border-bottom: 1px solid var(--border-subtle, hsl(222,47%,15%,0.4)); }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--bg-800); }

/* 41. Separator */
.separator { height: 1px; background: var(--border); margin: var(--space-lg) 0; }

/* 42. Misc text utilities */
.text-xs  { font-size: 0.75rem; }
.text-sm  { font-size: 0.875rem; }
.text-lg  { font-size: 1.125rem; }
.text-xl  { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-dim  { color: var(--text-400); }
.text-muted { color: var(--text-400); }
.font-bold  { font-weight: 700; }
.font-semibold { font-weight: 600; }
.mb-xs { margin-bottom: var(--space-xs); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.optional { font-size: 0.75rem; font-weight: 400; color: var(--text-400); margin-left: 4px; }
/* 44. Ads Placement Styles */
.ad-slot {
  margin: var(--space-xl) auto;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.ad-slot__label {
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-400);
  margin-bottom: 4px;
}
.ad-slot__box {
  width: 100%;
  max-width: 970px;
  min-height: 90px;
  background: var(--surface);
  border: 1px dashed var(--border-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-400);
  font-size: 0.75rem;
  text-align: center;
  padding: var(--space-sm);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.ad-slot--leaderboard .ad-slot__box { min-height: 90px; }
.ad-slot--inline .ad-slot__box { max-width: 728px; min-height: 90px; }
.ad-slot--box .ad-slot__box { max-width: 300px; min-height: 250px; }
@media (max-width: 768px) {
  .ad-slot__box { min-height: 60px; font-size: 0.6875rem; }
}

/* 45. Tool Page SEO Content & Guide Sections */
.tool-seo-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl) var(--space-xl);
  margin: var(--space-2xl) 0;
  box-shadow: var(--shadow-md);
}
.tool-seo-section h2 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text-100);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.tool-seo-section h2::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 1.1em;
  background: linear-gradient(to bottom, var(--accent), var(--accent-2));
  border-radius: 2px;
}
.tool-seo-section h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-100);
  margin: var(--space-lg) 0 var(--space-xs);
}
.tool-seo-section p {
  color: var(--text-200);
  line-height: 1.7;
  font-size: 0.9375rem;
  margin-bottom: var(--space-md);
}
.tool-seo-section ul,
.tool-seo-section ol {
  color: var(--text-200);
  padding-left: 1.25rem;
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}
.tool-seo-section li {
  margin-bottom: var(--space-xs);
}

/* Step Cards */
.guide-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-md);
  margin: var(--space-lg) 0;
}
.step-card {
  background: var(--bg-800);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  transition: transform var(--duration-fast), border-color var(--duration-fast);
}
.step-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-light);
}
.step-card__num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-dim);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8125rem;
  margin-bottom: var(--space-xs);
}
.step-card__title {
  font-weight: 600;
  color: var(--text-100);
  font-size: 0.9375rem;
}
.step-card__desc {
  font-size: 0.8125rem;
  color: var(--text-300);
  line-height: 1.5;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-md);
  margin: var(--space-lg) 0;
}
.feature-item {
  background: var(--bg-800);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}
.feature-item__icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  margin-top: 2px;
}
.feature-item__title {
  font-weight: 600;
  color: var(--text-100);
  font-size: 0.875rem;
  margin-bottom: 2px;
}
.feature-item__desc {
  font-size: 0.8125rem;
  color: var(--text-300);
  line-height: 1.5;
}

/* FAQ Cards */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin: var(--space-lg) 0;
}
.faq-card {
  background: var(--bg-800);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  transition: border-color var(--duration-fast);
}
.faq-card:hover {
  border-color: var(--border-light);
}
.faq-card__q {
  font-weight: 600;
  color: var(--text-100);
  font-size: 0.9375rem;
  margin-bottom: var(--space-xs);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}
.faq-card__q::before {
  content: 'Q:';
  color: var(--accent);
  font-weight: 800;
}
.faq-card__a {
  font-size: 0.875rem;
  color: var(--text-300);
  line-height: 1.6;
  padding-left: 1.5rem;
}

/* Related Tools Grid */
.related-tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-lg);
}
.related-tool-card {
  background: var(--bg-800);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  text-decoration: none;
  transition: all var(--duration-fast) var(--ease-out);
}
.related-tool-card:hover {
  background: var(--surface-hover);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.related-tool-card__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}
.related-tool-card__info {
  flex: 1;
  min-width: 0;
}
.related-tool-card__title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-100);
  margin-bottom: 2px;
}
.related-tool-card__desc {
  font-size: 0.75rem;
  color: var(--text-400);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 46. Legal & Trust Pages */
.legal-container {
  max-width: 860px;
  margin: var(--space-2xl) auto var(--space-3xl);
  padding: 0 var(--space-md);
}
.legal-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-lg);
}
.legal-card h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-xs);
  color: var(--text-100);
}
.legal-card .legal-subtitle {
  color: var(--text-400);
  font-size: 0.875rem;
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border);
}
.legal-card h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-100);
  margin: var(--space-xl) 0 var(--space-sm);
}
.legal-card p {
  color: var(--text-200);
  line-height: 1.7;
  font-size: 0.9375rem;
  margin-bottom: var(--space-md);
}
.legal-card ul {
  color: var(--text-200);
  padding-left: 1.25rem;
  margin-bottom: var(--space-md);
  line-height: 1.7;
}
.legal-card li {
  margin-bottom: var(--space-xs);
}

/* About Grid */
.about-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}
.about-feature-box {
  background: var(--bg-800);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}
.about-feature-box__icon {
  font-size: 1.75rem;
  margin-bottom: var(--space-xs);
}
.about-feature-box__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-100);
}
.about-feature-box__desc {
  font-size: 0.875rem;
  color: var(--text-300);
  line-height: 1.6;
}

/* 47. Mobile Responsiveness Hardening */
@media (max-width: 640px) {
  .tool-hero { padding: var(--space-xl) 0 var(--space-md); }
  .tool-hero__header { flex-direction: column; gap: var(--space-md); align-items: flex-start; }
  .tool-card-panel { padding: var(--space-md); border-radius: var(--radius-lg); }
  .tool-seo-section { padding: var(--space-lg) var(--space-md); border-radius: var(--radius-lg); }
  .legal-card { padding: var(--space-lg) var(--space-md); border-radius: var(--radius-lg); }
  .guide-steps { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .related-tools-grid { grid-template-columns: 1fr; }
  .form-grid-2, .form-grid-3 { grid-template-columns: 1fr; }
  .nav__inner { gap: var(--space-sm); }
}