/* ═══════════════════════════════════════════════════════════════
   SEOKit — Core Design System
   main.css — Tokens, Reset, Typography, Layout, Components
   ═══════════════════════════════════════════════════════════════ */

/* ── Google Fonts ──────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Plus+Jakarta+Sans:wght@600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── Design Tokens ──────────────────────────────────────────── */
:root {
  /* Colors */
  --bg-base:         #faf9f7;
  --bg-card:         #ffffff;
  --bg-elevated:     #f3f1fb;
  --bg-subtle:       #f8f7fe;

  --accent-primary:  #7c6cf0;
  --accent-primary-light: #9d92f5;
  --accent-primary-dark:  #6254d4;
  --accent-secondary:#5ba4cf;
  --accent-pink:     #d9a0c8;
  --accent-mint:     #72c9b0;
  --accent-amber:    #f0a757;

  --text-primary:    #1e1c2e;
  --text-secondary:  #4a4768;
  --text-muted:      #7a7799;
  --text-placeholder:#b0adc8;
  --text-inverse:    #ffffff;

  --border:          #e8e5f5;
  --border-strong:   #cec9ef;
  --border-focus:    #7c6cf0;

  /* Semantic */
  --success:         #22c55e;
  --warning:         #f59e0b;
  --error:           #ef4444;
  --info:            #3b82f6;

  /* Shadows */
  --shadow-xs:       0 1px 3px rgba(124,108,240,0.08);
  --shadow-sm:       0 4px 12px rgba(124,108,240,0.10);
  --shadow-md:       0 8px 32px rgba(124,108,240,0.14);
  --shadow-lg:       0 16px 56px rgba(124,108,240,0.16);
  --shadow-xl:       0 24px 80px rgba(124,108,240,0.20);
  --shadow-glow:     0 0 24px rgba(124,108,240,0.35);

  /* Typography */
  --font-base:       'Inter', system-ui, -apple-system, sans-serif;
  --font-display:    'Plus Jakarta Sans', 'Inter', sans-serif;
  --font-mono:       'JetBrains Mono', 'Fira Code', monospace;

  --text-xs:         0.75rem;
  --text-sm:         0.875rem;
  --text-base:       1rem;
  --text-lg:         1.125rem;
  --text-xl:         1.25rem;
  --text-2xl:        1.5rem;
  --text-3xl:        1.875rem;
  --text-4xl:        2.25rem;
  --text-5xl:        3rem;
  --text-6xl:        3.75rem;

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

  /* Border radius */
  --radius-sm:   8px;
  --radius-md:   12px;
  --radius-lg:   16px;
  --radius-xl:   20px;
  --radius-2xl:  24px;
  --radius-3xl:  32px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast:   150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base:   250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow:   400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Layout */
  --max-width:        1280px;
  --nav-height:       68px;
  --sidebar-width:    280px;

  /* Z-index */
  --z-base:     1;
  --z-raised:   10;
  --z-dropdown: 100;
  --z-sticky:   200;
  --z-modal:    1000;
  --z-toast:    2000;
  --z-cursor:   9999;
}

/* ── Dark Mode Tokens ───────────────────────────────────────── */
[data-theme="dark"] {
  --bg-base:         #13121a;
  --bg-card:         #1e1d2e;
  --bg-elevated:     #252438;
  --bg-subtle:       #1a1927;

  --accent-primary:  #9d92f5;
  --accent-primary-light: #b8b0fa;
  --accent-primary-dark:  #7c6cf0;

  --text-primary:    #f0eeff;
  --text-secondary:  #c5c0e8;
  --text-muted:      #8884a8;
  --text-placeholder:#5a587a;

  --border:          #2e2c42;
  --border-strong:   #3e3b5c;
  --border-focus:    #9d92f5;

  --shadow-xs:       0 1px 3px rgba(0,0,0,0.2);
  --shadow-sm:       0 4px 12px rgba(0,0,0,0.25);
  --shadow-md:       0 8px 32px rgba(0,0,0,0.30);
  --shadow-lg:       0 16px 56px rgba(0,0,0,0.35);
  --shadow-xl:       0 24px 80px rgba(0,0,0,0.40);
  --shadow-glow:     0 0 24px rgba(157,146,245,0.30);
}

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

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

body {
  font-family: var(--font-base);
  font-size: var(--text-base);
  color: var(--text-primary);
  background-color: var(--bg-base);
  line-height: 1.6;
  min-height: 100vh;
  transition: background-color var(--transition-base), color var(--transition-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video { max-width: 100%; height: auto; display: block; }
svg { display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
input, textarea, select { font: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); line-height: 1.2; font-weight: 700; }

/* ── Typography Scale ───────────────────────────────────────── */
.text-xs  { font-size: var(--text-xs); }
.text-sm  { font-size: var(--text-sm); }
.text-base{ font-size: var(--text-base); }
.text-lg  { font-size: var(--text-lg); }
.text-xl  { font-size: var(--text-xl); }
.text-2xl { font-size: var(--text-2xl); }
.text-3xl { font-size: var(--text-3xl); }
.text-4xl { font-size: var(--text-4xl); }
.text-5xl { font-size: var(--text-5xl); }
.text-6xl { font-size: var(--text-6xl); }
.text-muted     { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-accent    { color: var(--accent-primary); }
.font-medium  { font-weight: 500; }
.font-semibold{ font-weight: 600; }
.font-bold    { font-weight: 700; }
.font-display { font-family: var(--font-display); }
.font-mono    { font-family: var(--font-mono); }

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

.container-sm {
  max-width: 768px;
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.container-md {
  max-width: 960px;
  margin-inline: auto;
  padding-inline: var(--space-6);
}

/* ── Grid System ────────────────────────────────────────────── */
.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
.grid-3 { grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
.grid-4 { grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: var(--space-5); }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .grid-auto { grid-template-columns: 1fr; }
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start  { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-center  { justify-content: center; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.flex-wrap { flex-wrap: wrap; }

/* ── Spacing Utilities ──────────────────────────────────────── */
.mt-4  { margin-top: var(--space-4); }
.mt-6  { margin-top: var(--space-6); }
.mt-8  { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-6  { margin-bottom: var(--space-6); }
.mb-8  { margin-bottom: var(--space-8); }

/* ── Card Component ─────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: var(--space-6);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.card-elevated {
  background: var(--bg-elevated);
  border-color: transparent;
}

/* ── Section Spacing ────────────────────────────────────────── */
.section {
  padding-block: var(--space-20);
}
.section-sm {
  padding-block: var(--space-12);
}

/* ── Navigation ─────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  height: var(--nav-height);
  background: rgba(250, 249, 247, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition-base), border-color var(--transition-base);
}

[data-theme="dark"] .nav {
  background: rgba(19, 18, 26, 0.92);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-xl);
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
  transition: color var(--transition-fast);
}
.nav-logo:hover { color: var(--accent-primary); }

.nav-logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast), background var(--transition-fast);
}
.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-elevated);
}
.nav-link.active {
  color: var(--accent-primary);
  background: var(--bg-elevated);
}

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

.nav-search-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--text-muted);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  transition: all var(--transition-fast);
  min-width: 160px;
}
.nav-search-btn:hover {
  border-color: var(--border-focus);
  color: var(--text-secondary);
}

.nav-theme-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}
.nav-theme-btn:hover {
  background: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-md);
  background: var(--accent-primary);
  color: white;
  font-size: var(--text-sm);
  font-weight: 600;
  transition: all var(--transition-base);
  box-shadow: 0 2px 8px rgba(124,108,240,0.30);
}
.nav-cta:hover {
  background: var(--accent-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(124,108,240,0.40);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
}
.nav-hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

@media (max-width: 768px) {
  .nav-links, .nav-search-btn, .nav-cta { display: none; }
  .nav-hamburger { display: flex; }
  .container { padding-inline: var(--space-4); }
}

/* Mobile Nav Menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: var(--bg-base);
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  overflow-y: auto;
}
.mobile-menu.open { transform: translateX(0); }
.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--border);
}
.mobile-menu-close {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}
.mobile-menu-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.mobile-menu-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-elevated);
  transition: all var(--transition-fast);
}
.mobile-menu-link:hover { color: var(--accent-primary); }

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: all var(--transition-base);
  cursor: pointer;
  border: 1px solid transparent;
  line-height: 1;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: white;
  opacity: 0;
  transition: opacity var(--transition-fast);
  border-radius: inherit;
}

.btn:active::after { opacity: 0.1; }

.btn-primary {
  background: var(--accent-primary);
  color: white;
  box-shadow: 0 2px 12px rgba(124,108,240,0.30);
}
.btn-primary:hover {
  background: var(--accent-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(124,108,240,0.40);
}
.btn-primary:active { transform: scale(0.97); }

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border-color: var(--border);
}
.btn-secondary:hover {
  background: var(--bg-card);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--accent-primary);
  border-color: var(--accent-primary);
}
.btn-outline:hover {
  background: var(--accent-primary);
  color: white;
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}
.btn-ghost:hover {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

.btn-success {
  background: var(--success);
  color: white;
  box-shadow: 0 2px 12px rgba(34,197,94,0.30);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

.btn-icon {
  width: 38px;
  height: 38px;
  padding: 0;
  border-radius: var(--radius-md);
}

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

.form-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.form-sublabel {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-weight: 400;
}

.input, .textarea, .select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: var(--text-base);
  transition: all var(--transition-fast);
  outline: none;
}

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

.input:focus, .textarea:focus, .select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(124,108,240,0.15);
}

.input:hover, .textarea:hover, .select:hover {
  border-color: var(--border-strong);
}

.textarea {
  min-height: 120px;
  resize: vertical;
  line-height: 1.6;
}

.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='%237a7799' 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: 40px;
  cursor: pointer;
}

/* Checkbox / Radio */
.checkbox-group, .radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.checkbox-label, .radio-label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}
.checkbox-label:hover, .radio-label:hover { color: var(--text-primary); }

.checkbox-label input[type="checkbox"],
.radio-label input[type="radio"] {
  width: 18px;
  height: 18px;
  border-radius: 5px;
  border: 2px solid var(--border-strong);
  background: var(--bg-card);
  appearance: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
  position: relative;
}

.checkbox-label input[type="checkbox"]:checked {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}
.checkbox-label input[type="checkbox"]:checked::after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-size: 11px;
  font-weight: 700;
}

.radio-label input[type="radio"] {
  border-radius: 50%;
}
.radio-label input[type="radio"]:checked {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

/* Range input */
.range-input {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--border);
  outline: none;
  cursor: pointer;
}
.range-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent-primary);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(124,108,240,0.4);
  transition: transform var(--transition-fast);
}
.range-input::-webkit-slider-thumb:hover { transform: scale(1.2); }

/* ── Output / Code Areas ─────────────────────────────────────── */
.output-area {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--text-primary);
  min-height: 100px;
  position: relative;
  overflow: auto;
  max-height: 500px;
}

.output-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.output-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.output-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ── Badges / Tags ──────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.02em;
}
.badge-primary { background: rgba(124,108,240,0.12); color: var(--accent-primary); }
.badge-success { background: rgba(34,197,94,0.12); color: var(--success); }
.badge-warning { background: rgba(245,158,11,0.12); color: var(--warning); }
.badge-error   { background: rgba(239,68,68,0.12); color: var(--error); }
.badge-info    { background: rgba(59,130,246,0.12); color: var(--info); }
.badge-pink    { background: rgba(217,160,200,0.15); color: #c97dab; }

/* ── Divider ─────────────────────────────────────────────────── */
.divider {
  height: 1px;
  background: var(--border);
  margin-block: var(--space-8);
}

/* ── Character Counter / Stats Bar ──────────────────────────── */
.stats-bar {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-value {
  font-size: var(--text-2xl);
  font-weight: 700;
  font-family: var(--font-display);
  color: var(--accent-primary);
}

.stat-label {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-weight: 500;
}

/* ── Progress Bar ───────────────────────────────────────────── */
.progress-wrap {
  height: 8px;
  background: var(--border);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}
.progress-bar.warn { background: linear-gradient(90deg, var(--warning), var(--accent-amber)); }
.progress-bar.over { background: linear-gradient(90deg, var(--error), #f97316); }

/* ── Tool Cards ─────────────────────────────────────────────── */
.tool-card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  padding: var(--space-5);
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}
.tool-card:hover::before { opacity: 1; }

.tool-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background: var(--bg-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  transition: all var(--transition-base);
  flex-shrink: 0;
}
.tool-card:hover .tool-card-icon {
  background: var(--accent-primary);
  color: white;
  transform: rotate(-5deg) scale(1.05);
}

.tool-card-name {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-display);
  line-height: 1.3;
}

.tool-card-desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.5;
  flex: 1;
}

.tool-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-2);
}

.tool-card-cat {
  font-size: var(--text-xs);
  color: var(--accent-primary);
  font-weight: 600;
  background: rgba(124,108,240,0.10);
  padding: 3px 8px;
  border-radius: var(--radius-full);
}

.tool-card-arrow {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all var(--transition-fast);
}
.tool-card:hover .tool-card-arrow {
  background: var(--accent-primary);
  color: white;
  transform: translateX(2px);
}

/* ── Category Cards ──────────────────────────────────────────── */
.category-card {
  background: var(--bg-card);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--border);
  padding: var(--space-8);
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.category-card-icon {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  transition: transform var(--transition-bounce);
}
.category-card:hover .category-card-icon {
  transform: scale(1.1) rotate(-5deg);
}

.category-card-count {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.category-card-name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
}

.category-card-desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Breadcrumb ──────────────────────────────────────────────── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-muted);
  flex-wrap: wrap;
}
.breadcrumb-item { display: flex; align-items: center; gap: var(--space-2); }
.breadcrumb-link { color: var(--text-muted); transition: color var(--transition-fast); }
.breadcrumb-link:hover { color: var(--accent-primary); }
.breadcrumb-current { color: var(--text-secondary); font-weight: 500; }
.breadcrumb-sep { color: var(--text-placeholder); }

/* ── Hero Section ────────────────────────────────────────────── */
.hero {
  padding-top: calc(var(--nav-height) + var(--space-16));
  padding-bottom: var(--space-20);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: rgba(124,108,240,0.10);
  border: 1px solid rgba(124,108,240,0.20);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--accent-primary);
  margin-bottom: var(--space-6);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-4xl), 6vw, var(--text-6xl));
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: var(--space-6);
  max-width: 900px;
  margin-inline: auto;
}

.hero-title .highlight {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--text-xl);
  color: var(--text-secondary);
  max-width: 580px;
  margin-inline: auto;
  margin-bottom: var(--space-10);
  line-height: 1.7;
}

.hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-12);
}

/* ── Trust Badges ────────────────────────────────────────────── */
.trust-badges {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-muted);
  font-weight: 500;
}

.trust-badge-icon {
  width: 20px;
  height: 20px;
  color: var(--success);
}

/* ── Search Bar ──────────────────────────────────────────────── */
.search-wrap {
  position: relative;
  max-width: 600px;
  margin-inline: auto;
}

.search-input {
  width: 100%;
  padding: var(--space-4) var(--space-5) var(--space-4) var(--space-14);
  border-radius: var(--radius-2xl);
  border: 2px solid var(--border);
  background: var(--bg-card);
  font-size: var(--text-lg);
  color: var(--text-primary);
  transition: all var(--transition-base);
  outline: none;
  box-shadow: var(--shadow-sm);
}
.search-input::placeholder { color: var(--text-placeholder); }
.search-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 4px rgba(124,108,240,0.12), var(--shadow-md);
}

.search-icon {
  position: absolute;
  left: var(--space-5);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  width: 22px;
  height: 22px;
  pointer-events: none;
}

.search-results {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
  overflow: hidden;
  display: none;
  max-height: 400px;
  overflow-y: auto;
}
.search-results.visible { display: block; }

.search-result-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  transition: background var(--transition-fast);
  cursor: pointer;
  text-decoration: none;
}
.search-result-item:hover { background: var(--bg-elevated); }

.search-result-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  flex-shrink: 0;
}

.search-result-info { flex: 1; min-width: 0; }
.search-result-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
}
.search-result-cat {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.search-no-results {
  padding: var(--space-8);
  text-align: center;
  color: var(--text-muted);
  font-size: var(--text-sm);
}

/* ── Tool Page Layout ────────────────────────────────────────── */
.tool-page {
  padding-top: calc(var(--nav-height) + var(--space-8));
  min-height: 100vh;
}

.tool-page-header {
  padding-block: var(--space-8);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-8);
}

.tool-hero {
  display: flex;
  align-items: flex-start;
  gap: var(--space-6);
}

.tool-hero-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, rgba(124,108,240,0.15), rgba(91,164,207,0.15));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  flex-shrink: 0;
  border: 1px solid rgba(124,108,240,0.20);
}

.tool-hero-info { flex: 1; }

.tool-hero-title {
  font-size: var(--text-3xl);
  font-weight: 800;
  margin-bottom: var(--space-3);
  line-height: 1.2;
}

.tool-hero-desc {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 600px;
}

.tool-page-body {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-8);
  align-items: start;
  padding-bottom: var(--space-20);
}

@media (max-width: 1024px) {
  .tool-page-body {
    grid-template-columns: 1fr;
  }
}

.tool-main {}
.tool-sidebar {}

/* Tool Interface Card */
.tool-interface {
  background: var(--bg-card);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--border);
  padding: var(--space-8);
  margin-bottom: var(--space-8);
  box-shadow: var(--shadow-sm);
}

/* Privacy indicator */
.privacy-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(34,197,94,0.10);
  border: 1px solid rgba(34,197,94,0.20);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--success);
}

/* ── SEO Content Sections ────────────────────────────────────── */
.content-section {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  padding: var(--space-8);
  margin-bottom: var(--space-6);
}

.content-section h2 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.content-section h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
  color: var(--text-primary);
}

.content-section p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-4);
}

.content-section ul, .content-section ol {
  color: var(--text-secondary);
  line-height: 1.8;
  padding-left: var(--space-6);
  margin-bottom: var(--space-4);
}

.content-section ul { list-style: disc; }
.content-section ol { list-style: decimal; }

.content-section li { margin-bottom: var(--space-2); }

/* ── FAQ Accordion ───────────────────────────────────────────── */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
  transition: border-color var(--transition-fast);
}

.faq-item.open { border-color: var(--accent-primary); }

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  cursor: pointer;
  font-weight: 600;
  color: var(--text-primary);
  gap: var(--space-4);
  transition: color var(--transition-fast);
  -webkit-user-select: none;
  user-select: none;
}
.faq-question:hover { color: var(--accent-primary); }

.faq-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform var(--transition-base);
  color: var(--text-muted);
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  color: var(--accent-primary);
}

.faq-answer {
  display: none;
  padding: 0 var(--space-6) var(--space-5);
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: var(--text-sm);
}
.faq-item.open .faq-answer { display: block; }

/* ── Related Tools ───────────────────────────────────────────── */
.related-tools {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.related-tool-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--bg-elevated);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  cursor: pointer;
}
.related-tool-link:hover {
  background: var(--accent-primary);
  color: white;
  border-color: transparent;
  transform: translateY(-1px);
}
.related-tool-link:hover .related-tool-icon { color: white; }

.related-tool-icon {
  color: var(--accent-primary);
  flex-shrink: 0;
  transition: color var(--transition-fast);
}

@media (max-width: 640px) {
  .related-tools { grid-template-columns: 1fr; }
  .tool-hero { flex-direction: column; }
  .tool-hero-icon { width: 52px; height: 52px; }
  .tool-hero-title { font-size: var(--text-2xl); }
}

/* ── Toast Notifications ─────────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-primary);
  min-width: 200px;
  max-width: 360px;
  pointer-events: auto;
  animation: toastIn 0.35s var(--transition-bounce) forwards;
}

.toast.exit { animation: toastOut 0.25s ease forwards; }

.toast-icon { flex-shrink: 0; width: 20px; height: 20px; }
.toast-success { border-left: 3px solid var(--success); }
.toast-error   { border-left: 3px solid var(--error); }
.toast-info    { border-left: 3px solid var(--info); }
.toast-warning { border-left: 3px solid var(--warning); }

/* ── Skeleton Loader ─────────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, var(--border) 25%, var(--bg-elevated) 50%, var(--border) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: var(--radius-md);
}

/* ── Decorative elements ─────────────────────────────────────── */
.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  pointer-events: none;
  z-index: -1;
  animation: blobFloat 8s ease-in-out infinite;
}
.hero-blob-1 {
  width: 500px;
  height: 500px;
  background: var(--accent-primary);
  top: -100px;
  right: -100px;
  opacity: 0.10;
}
.hero-blob-2 {
  width: 400px;
  height: 400px;
  background: var(--accent-secondary);
  bottom: -50px;
  left: -80px;
  opacity: 0.10;
  animation-delay: -4s;
}

.sparkle {
  position: absolute;
  pointer-events: none;
  animation: sparkleFloat 6s ease-in-out infinite;
  opacity: 0.6;
}

/* ── Footer ──────────────────────────────────────────────────── */
.footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding-top: var(--space-16);
  padding-bottom: var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand-col { grid-column: 1 / -1; }
}

.footer-logo-area {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer-desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 280px;
}

.footer-social {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.footer-social-link {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all var(--transition-fast);
}
.footer-social-link:hover {
  background: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
  transform: translateY(-2px);
}

.footer-col-title {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-size: 11px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-link {
  font-size: var(--text-sm);
  color: var(--text-muted);
  transition: color var(--transition-fast);
  cursor: pointer;
}
.footer-link:hover { color: var(--accent-primary); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-copyright {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-5);
  flex-wrap: wrap;
}

/* ── Section Header ──────────────────────────────────────────── */
.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(124,108,240,0.10);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--accent-primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
  line-height: 1.2;
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--text-muted);
  max-width: 560px;
  margin-inline: auto;
  line-height: 1.7;
}

/* ── Popular Tool Chips ──────────────────────────────────────── */
.popular-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
}

.popular-chip {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-xs);
}
.popular-chip:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: rgba(124,108,240,0.06);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* ── Utility Classes ─────────────────────────────────────────── */
.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;
}
.text-center { text-align: center; }
.text-left   { text-align: left; }
.w-full { width: 100%; }
.relative { position: relative; }
.overflow-hidden { overflow: hidden; }
.flex-1 { flex: 1; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ── Focus Visible ───────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ── Scrollbar ───────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-elevated); }
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: var(--accent-primary); }

/* ── Selection ───────────────────────────────────────────────── */
::selection {
  background: rgba(124,108,240,0.20);
  color: var(--text-primary);
}