/* ══════════════════════════════════════════════════════════════════════════
   ENTERNO.IO — Design System v6
   "Deep Ember" — warm obsidian depths, liquid glass, precision-crafted light
   ══════════════════════════════════════════════════════════════════════════ */

/* ── Variables ──────────────────────────────────────────────────────────── */
:root {
  /* Deep warm palette — charcoal with amber undertone */
  --bg:        #0c0e16;
  --surface:   #14171f;
  --surface2:  #1b1f2b;
  --surface3:  #252a39;
  --border:    rgba(255,255,255,.06);
  --border2:   rgba(255,255,255,.10);
  --border3:   rgba(255,255,255,.16);

  /* Luminous accents — electric but warm */
  --accent:    #59a8ff;
  --accent2:   #9278f4;
  --accent-glow: rgba(89,168,255,.22);
  --accent-glow2: rgba(146,120,244,.16);
  --cyan:      #2dd4bf;
  --green:     #3dd68c;
  --yellow:    #f5c842;
  --orange:    #f59e42;
  --red:       #f47272;
  --white:     #fff;
  --danger:    #ef4444;
  --warn:      #f59e0b;

  /* Status semantic aliases */
  --status-pass:    var(--green);
  --status-warn:    var(--yellow);
  --status-fail:    var(--red);
  --status-info:    var(--accent);
  --status-pass-bg: rgba(61,214,140,.12);
  --status-warn-bg: rgba(245,200,66,.12);
  --status-fail-bg: rgba(244,114,114,.12);
  --status-info-bg: rgba(89,168,255,.12);

  /* Text — high-contrast warm whites */
  --text:      #f0f2f8;
  --text2:     #c5ccdf;
  --muted:     #8494ae;
  --muted2:    #8e9bb5;

  /* Type — refined stack */
  --mono:      'JetBrains Mono', ui-monospace, 'Cascadia Code', monospace;
  --sans:      'Inter', system-ui, -apple-system, sans-serif;
  --fs-xs:     .75rem;
  --fs-sm:     .8125rem;
  --fs-base:   .9375rem;
  --fs-md:     1.0625rem;
  --fs-lg:     1.375rem;
  --fs-xl:     1.75rem;
  --fs-2xl:    2.125rem;
  --fs-3xl:    2.75rem;

  /* Shape — slightly tighter radii for precision */
  --radius:    12px;
  --radius-sm: 8px;
  --radius-lg: 18px;
  --radius-pill: 100px;

  /* Timing — polished curves */
  --ease-out:    cubic-bezier(.22, 1, .36, 1);
  --ease-spring: cubic-bezier(.34, 1.56, .64, 1);
  --ease-smooth: cubic-bezier(.4, 0, .2, 1);
  --dur:         .18s;
  --dur-slow:    .32s;
  --dur-slower:  .48s;

  /* Glass */
  --glass-bg:    rgba(20, 23, 31, .52);
  --glass-blur:  blur(24px) saturate(1.25);
  --glass-inner: inset 0 1px 0 rgba(255,255,255,.05);
  --glass-glow:  inset 0 0 60px rgba(89,168,255,.012);

  /* Spacing scale (8px base) */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-7:  32px;
  --space-8:  40px;
  --space-9:  48px;
  --space-10: 64px;

  /* Shadows */
  --shadow-sm:  0 1px 2px rgba(0,0,0,.2);
  --shadow-md:  0 4px 12px rgba(0,0,0,.18);
  --shadow-lg:  0 8px 32px rgba(0,0,0,.22);
  --shadow-xl:  0 20px 56px rgba(0,0,0,.3);
  --shadow-glow: 0 0 20px var(--accent-glow);

  /* Z-index scale */
  --z-base:    1;
  --z-dropdown: 110;
  --z-sticky:  100;
  --z-mobile:  99;
  --z-modal:   200;
  --z-toast:   300;
  --z-skip:    9999;

  /* Content widths */
  --content-width: 1100px;

  /* Component tokens */
  --card-padding: 28px 32px;
  --card-padding-mobile: 20px 16px;
  --content-narrow: 800px;
  --content-wide: 1320px;
}

/* ── Reset ────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
a, a:visited { cursor: pointer; }
p a:visited,
.tool-desc a:visited,
.card-text a:visited,
.llms-faq-a a:visited,
.llms-feature-card p a:visited,
.llms-edu-header p a:visited,
.llms-practice-item span a:visited,
.llms-mistake-item span a:visited,
.check-detail a:visited,
.article-body a:visited { color: var(--accent2); }
html { scroll-behavior: smooth; overflow-x: hidden; }

/* ── Body + atmosphere ────────────────────────────────────────────────── */
body {
  font-family: var(--sans);
  font-size: var(--fs-base);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: .005em;
}
/* Subtle noise grain — barely perceptible */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.008'/%3E%3C/svg%3E");
  pointer-events: none; z-index: 0;
}
/* Ambient gradient orbs — refined & warm */
body::after {
  content: '';
  position: fixed;
  top: -25vh; left: 50%; transform: translateX(-50%);
  width: 90vw; height: 50vh;
  background:
    radial-gradient(ellipse at 30% 40%, rgba(89,168,255,.04) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 60%, rgba(146,120,244,.03) 0%, transparent 50%);
  pointer-events: none; z-index: 0;
}

/* ── Accessibility ────────────────────────────────────────────────────── */
.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;
}
.sr-only--focusable:focus {
  position: fixed; top: 8px; left: 8px; z-index: var(--z-skip);
  padding: 8px 16px; background: var(--accent); color: var(--white);
  border-radius: var(--radius-sm); font-size: var(--fs-sm);
  clip: auto; width: auto; height: auto; overflow: visible;
  white-space: nowrap;
}

.is-hidden { display: none; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}
:focus:not(:focus-visible) {
  outline: none;
}

/* ── Layout ───────────────────────────────────────────────────────────── */
.wrap {
  position: relative;
  z-index: 1;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px 0;
}

/* ══════════════════════════════════════════════════════════════════════════
   GLOBAL COMPONENTS — Buttons, Inputs, Labels, Badges, Alerts, Tables
   ══════════════════════════════════════════════════════════════════════════ */

/* ── Buttons ──────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 12px 28px;
  min-height: 44px;
  font-family: var(--sans);
  font-size: var(--fs-sm);
  font-weight: 600;
  line-height: 1.2;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: .01em;
  transition:
    background var(--dur) var(--ease-smooth),
    border-color var(--dur) var(--ease-smooth),
    box-shadow var(--dur-slow) var(--ease-smooth),
    transform var(--dur) var(--ease-spring),
    color var(--dur) var(--ease-smooth);
}
.btn:hover { transform: translateY(-1px) scale(1.02); }
.btn:active { transform: scale(.97); transition-duration: .08s; }
.btn:disabled {
  opacity: .4;
  cursor: not-allowed;
  transform: none;
  pointer-events: none;
}
.btn.is-hidden { display: none; }

.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent), 0 0 20px var(--accent-glow);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  color: var(--white);
  border-color: transparent;
  box-shadow:
    0 2px 10px rgba(89,168,255,.2),
    0 1px 3px rgba(0,0,0,.25);
}
.btn-primary:hover {
  box-shadow:
    0 8px 32px rgba(89,168,255,.35),
    0 2px 6px rgba(0,0,0,.15);
}
.btn-primary.is-hidden { display: none; }

.btn-primary:focus-visible {
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent), 0 0 24px rgba(89,168,255,.3);
}

.btn-secondary {
  background: var(--surface2);
  color: var(--text2);
  border-color: var(--border2);
}
.btn-secondary:hover {
  background: var(--surface3);
  border-color: var(--border3);
  color: var(--text);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border-color: rgba(89,168,255,.25);
}
.btn-outline:hover {
  background: rgba(89,168,255,.07);
  border-color: rgba(89,168,255,.42);
  box-shadow: 0 0 18px rgba(89,168,255,.08);
}

.btn-disabled { opacity: .45; pointer-events: none; cursor: not-allowed; }
.btn-danger {
  background: rgba(244,114,114,.08);
  color: var(--red);
  border-color: rgba(244,114,114,.18);
}
.btn-danger:hover {
  background: rgba(244,114,114,.16);
  border-color: rgba(244,114,114,.32);
}

.btn-sm {
  padding: 7px 16px;
  min-height: 44px /* WCAG 2.5.5 */;
  font-size: var(--fs-xs);
  border-radius: 7px;
}
.btn-xs {
  padding: 4px 10px;
  min-height: 28px;
  font-size: var(--fs-xs);
  border-radius: 6px;
}
.btn-icon {
  padding: 0;
  width: 40px; height: 40px;
  min-height: unset;
  border-radius: var(--radius-sm);
}
.btn-ghost {
  background: var(--surface2);
  color: var(--muted2);
  border: 1px solid var(--border2);
  border-radius: 8px;
}
.btn-ghost:hover {
  background: rgba(91,138,248,.08);
  border-color: var(--accent);
  color: var(--accent);
}
.btn-ghost:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent);
}

.btn-md {
  padding: 10px 22px;
  font-size: var(--fs-sm);
  border-radius: 8px;
}
.btn-lg {
  padding: 12px 32px;
  font-size: var(--fs-base);
  border-radius: 10px;
  min-height: 48px;
}

/* ── Inputs ───────────────────────────────────────────────────────────── */
.input,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="url"],
input[type="number"],
input[type="date"],
input[type="search"],
textarea,
select {
  display: block;
  width: 100%;
  padding: 11px 16px;
  min-height: 46px;
  font-family: var(--sans);
  font-size: var(--fs-base);
  color: var(--text);
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  outline: none;
  transition:
    border-color var(--dur) var(--ease-smooth),
    box-shadow var(--dur-slow) var(--ease-smooth),
    background var(--dur) var(--ease-smooth);
  line-height: 1.5;
  letter-spacing: .005em;
}
.input:hover,
input[type="text"]:hover,
input[type="email"]:hover,
input[type="password"]:hover,
input[type="url"]:hover,
textarea:hover,
select:hover {
  border-color: var(--border3);
  background: var(--surface3);
}
.input:focus,
input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="url"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
input[type="search"]:focus,
textarea:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow), 0 0 28px rgba(89,168,255,.06);
  background: var(--surface);
}
.input::placeholder,
input::placeholder,
textarea::placeholder {
  color: var(--muted);
  opacity: 1;
}
.input-sm {
  padding: 7px 12px;
  min-height: 36px;
  font-size: var(--fs-sm);
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238e9bb5' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 38px;
}

label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--muted2);
  margin-bottom: 6px;
  letter-spacing: .015em;
}

/* ── Badges ───────────────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 12px;
  font-size: var(--fs-xs);
  font-weight: 600;
  border-radius: var(--radius-pill);
  letter-spacing: .02em;
  line-height: 1.4;
}
.badge-accent {
  background: rgba(89,168,255,.08);
  color: var(--accent);
  border: 1px solid rgba(89,168,255,.2);
}
.badge-green {
  background: rgba(61,214,140,.08);
  color: var(--green);
  border: 1px solid rgba(61,214,140,.2);
}
.badge-red {
  background: rgba(244,114,114,.08);
  color: var(--red);
  border: 1px solid rgba(244,114,114,.2);
}
.badge-yellow {
  background: rgba(245,200,66,.08);
  color: var(--yellow);
  border: 1px solid rgba(245,200,66,.2);
}
.badge-purple {
  background: rgba(146,120,244,.08);
  color: var(--accent2);
  border: 1px solid rgba(146,120,244,.2);
}
.badge-cyan {
  background: rgba(45,212,191,.08);
  color: var(--cyan);
  border: 1px solid rgba(45,212,191,.2);
}

/* ── Alerts ───────────────────────────────────────────────────────────── */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  line-height: 1.6;
  border: 1px solid var(--border2);
  background: var(--surface2);
  color: var(--text2);
}
.alert-info {
  background: rgba(89,168,255,.05);
  border-color: rgba(89,168,255,.16);
  color: var(--accent);
}
.alert-success {
  background: rgba(61,214,140,.05);
  border-color: rgba(61,214,140,.16);
  color: var(--green);
}
.alert-warning {
  background: rgba(245,200,66,.05);
  border-color: rgba(245,200,66,.16);
  color: var(--yellow);
}
.alert-error,
.alert-danger {
  background: rgba(244,114,114,.05);
  border-color: rgba(244,114,114,.16);
  color: var(--red);
}

/* ── Spinner ──────────────────────────────────────────────────────────── */
.spinner {
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,.3);
  border-top-color: var(--white);
  border-radius: 50%;
  animation: spin .6s linear infinite;
}
.spinner-lg { width: 24px; height: 24px; border-width: 3px; }
.spinner-center { margin: 0 auto 12px; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}


/* ── Empty state ─────────────────────────────────────────────────────── */
.empty-state {
  text-align: center; padding: var(--space-9) var(--space-6);
  color: var(--muted);
}
.empty-state__icon { font-size: 2.5rem; margin-bottom: var(--space-4); opacity: .5; }
.empty-state__title {
  font-size: var(--fs-md); font-weight: 600; color: var(--text2);
  margin-bottom: var(--space-2);
}
.empty-state__desc { font-size: var(--fs-sm); max-width: 360px; margin: 0 auto var(--space-5); line-height: 1.6; }
.empty-state__action { display: inline-flex; }

/* ── Toast notification ──────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: var(--space-6); right: var(--space-6);
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  background: var(--surface2); border: 1px solid var(--border2);
  border-radius: var(--radius); box-shadow: var(--shadow-xl);
  font-size: var(--fs-sm); color: var(--text2);
  z-index: var(--z-toast); max-width: 420px;
  animation: toastSlideIn .3s var(--ease-out);
}
.toast--success { border-color: rgba(61,214,140,.3); }
.toast--error   { border-color: rgba(244,114,114,.3); }
.toast__close {
  background: none; border: none; color: var(--muted);
  cursor: pointer; padding: var(--space-1); font-size: 1.1rem;
}
.toast__close:hover { color: var(--text); }
@keyframes toastSlideIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@media (max-width: 600px) {
  .toast { left: var(--space-4); right: var(--space-4); bottom: var(--space-4); max-width: none; }
}

/* ── Chip (toggle button) ────────────────────────────────────────────── */
.chip {
  display: inline-flex; align-items: center;
  padding: 5px 14px;
  border-radius: var(--radius-sm);
  font-size: var(--fs-xs); font-weight: 600;
  font-family: var(--mono);
  color: var(--muted2);
  background: var(--surface2);
  border: 1px solid var(--border2);
  cursor: pointer;
  transition: all .2s var(--ease-smooth);
  user-select: none;
}
.chip input { display: none; }
.chip:hover { border-color: rgba(89,168,255,.25); color: var(--text); }
.chip.is-active, .chip--active {
  color: var(--accent);
  background: rgba(89,168,255,.1);
  border-color: rgba(89,168,255,.25);
}

/* ── Tables ───────────────────────────────────────────────────────────── */
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-sm);
}
.table th,
.table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.table th {
  font-weight: 600;
  color: var(--muted2);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: .06em;
  background: var(--surface);
  border-bottom-color: var(--border2);
}
.table td {
  color: var(--text2);
}
.table tbody tr {
  transition: background var(--dur) var(--ease-smooth);
}
.table tbody tr:hover {
  background: rgba(255,255,255,.02);
}
.table-striped tbody tr:nth-child(even) {
  background: rgba(255,255,255,.012);
}
.table-striped tbody tr:nth-child(even):hover {
  background: rgba(255,255,255,.03);
}

/* ══════════════════════════════════════════════════════════════════════════
   TOPBAR — spacious single-row navigation (60px)
   ══════════════════════════════════════════════════════════════════════════ */
.topbar {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: rgba(12, 14, 22, .82);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border);
  width: 100vw;
  margin-left: calc(-50vw + 50%);
}
.top-bar {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: rgba(12, 14, 22, .82);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  height: 60px;
  gap: 6px;
}

/* Logo — refined */
.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  flex-shrink: 0;
  margin-right: 8px;
}
.logo-icon {
  width: 30px; height: 30px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: var(--fs-sm);
  box-shadow: 0 2px 14px rgba(89,168,255,.28);
  transition: box-shadow var(--dur-slow) var(--ease-smooth), transform var(--dur) var(--ease-spring);
}
.logo:hover .logo-icon {
  box-shadow: 0 4px 24px rgba(89,168,255,.45);
  transform: scale(1.05);
}
.logo-group { display: flex; flex-direction: column; }
.logo-text {
  font-size: var(--fs-md);
  font-weight: 700;
  color: var(--text);
  letter-spacing: -.3px;
  line-height: 1;
}
.logo-text span { color: var(--accent); }
.logo-tagline { display: none; }

/* Tool links inline */
.topbar-tools {
  display: flex;
  align-items: center;
  gap: 2px;
}
.topbar-tool {
  padding: 8px 14px;
  font-size: var(--fs-xs);
  font-weight: 500;
  color: var(--muted2);
  text-decoration: none;
  border-radius: 7px;
  transition:
    color var(--dur) var(--ease-smooth),
    background var(--dur) var(--ease-smooth);
  white-space: nowrap;
  border: none;
  background: none;
  cursor: pointer;
  font-family: var(--sans);
  line-height: 1.2;
}
.topbar-tool:hover {
  color: var(--text);
  background: rgba(255,255,255,.06);
}
.topbar-tool.is-active {
  color: var(--accent);
  background: rgba(89,168,255,.08);
}

/* More dropdown */
.topbar-more { position: relative; }
.topbar-more-btn {
  display: inline-flex;
  align-items: center;
  gap: 3px;
}
.topbar-more-arrow {
  font-size: 8px;
  opacity: .5;
  transition: transform .2s var(--ease-out);
}
.topbar-more.open .topbar-more-arrow {
  transform: rotate(180deg);
}
.topbar-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 230px;
  background: rgba(20, 23, 31, .95);
  backdrop-filter: blur(28px) saturate(1.2);
  -webkit-backdrop-filter: blur(28px) saturate(1.2);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  padding: 6px;
  box-shadow:
    0 20px 56px rgba(0,0,0,.5),
    0 4px 12px rgba(0,0,0,.2),
    var(--glass-inner);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity .2s var(--ease-smooth),
    transform .25s var(--ease-out);
  z-index: var(--z-dropdown);
}
.topbar-more.open .topbar-dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.topbar-drop-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--muted2);
  text-decoration: none;
  border-radius: 7px;
  transition: all .15s var(--ease-smooth);
  white-space: nowrap;
}
.topbar-drop-item:hover {
  color: var(--text);
  background: rgba(255,255,255,.06);
}
.topbar-drop-item.is-active {
  color: var(--accent);
  background: rgba(89,168,255,.07);
}
.topbar-drop-icon {
  font-size: var(--fs-base);
  opacity: .5;
  width: 22px;
  text-align: center;
  flex-shrink: 0;
}
.topbar-drop-item.is-active .topbar-drop-icon { opacity: 1; }
.topbar-drop-sep {
  height: 1px;
  background: var(--border2);
  margin: 4px 10px;
}

/* Actions */
.topbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
  flex-shrink: 0;
}
.topbar-link {
  padding: 8px 12px;
  font-size: var(--fs-xs);
  font-weight: 500;
  color: var(--muted2);
  text-decoration: none;
  border-radius: 7px;
  transition:
    color var(--dur) var(--ease-smooth),
    background var(--dur) var(--ease-smooth);
}
.topbar-link:hover {
  color: var(--text);
  background: rgba(255,255,255,.06);
}
.topbar-link.is-active { color: var(--accent); }

/* Auth button */
.topbar-auth {
  padding: 8px 18px;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  border: 1px solid rgba(89,168,255,.22);
  border-radius: 7px;
  background: rgba(89,168,255,.05);
  transition: all var(--dur) var(--ease-smooth);
  white-space: nowrap;
}
.topbar-auth:hover {
  background: rgba(89,168,255,.12);
  border-color: rgba(89,168,255,.38);
  box-shadow: 0 2px 18px rgba(89,168,255,.16);
  transform: translateY(-1px);
}
.topbar-auth.is-active {
  background: rgba(89,168,255,.14);
  border-color: rgba(89,168,255,.38);
}

/* Burger (mobile) */
.topbar-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px; height: 44px;
  background: none;
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 11px;
  margin-left: auto;
  transition:
    border-color var(--dur) var(--ease-smooth),
    background var(--dur) var(--ease-smooth);
}
.topbar-burger:hover {
  border-color: var(--border3);
  background: rgba(255,255,255,.04);
}
.topbar-burger span {
  display: block; width: 100%; height: 2px;
  background: var(--muted2); border-radius: 2px;
  transition: all .3s var(--ease-out);
}
.topbar-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.topbar-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; transform: scaleX(.3); }
.topbar-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ══════════════════════════════════════════════════════════════════════════
   MOBILE MENU
   ══════════════════════════════════════════════════════════════════════════ */
.mobile-menu {
  display: none;
  position: fixed;
  top: 60px;
  left: 0; right: 0;
  z-index: var(--z-mobile);
  background: rgba(20, 23, 31, .97);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  border-bottom: 1px solid var(--border2);
  padding: 12px 20px 16px;
  transform: translateY(-10px);
  opacity: 0;
  transition:
    transform .3s var(--ease-out),
    opacity .25s var(--ease-smooth);
  pointer-events: none;
  max-height: calc(100vh - 60px);
  overflow-y: auto;
}
.mobile-menu.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}
.mobile-menu-links {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.mobile-menu-links a {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  font-size: var(--fs-base);
  font-weight: 500;
  color: var(--muted2);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all .2s var(--ease-smooth);
  min-height: 44px;
}
.mobile-menu-links a:hover,
.mobile-menu-links a.is-active {
  color: var(--text);
  background: var(--surface2);
}
.mobile-menu-label {
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .06em;
  padding: 10px 16px 4px;
}
.mobile-menu-divider {
  height: 1px;
  background: var(--border2);
  margin: 8px 0;
}

/* ── Tool Navigation Tabs ─────────────────────────────────────────────── */
.toolnav,
.tool-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: 4px;
  margin-bottom: 24px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.toolnav::-webkit-scrollbar,
.tool-nav::-webkit-scrollbar { display: none; }
.toolnav a,
.toolnav button,
.tool-nav a,
.tool-nav button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  min-height: 44px;
  font-family: var(--sans);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--muted2);
  text-decoration: none;
  border: none;
  border-radius: 7px;
  background: transparent;
  cursor: pointer;
  white-space: nowrap;
  position: relative;
  transition:
    color var(--dur) var(--ease-smooth),
    background var(--dur) var(--ease-smooth);
}
.toolnav a:hover,
.toolnav button:hover,
.tool-nav a:hover,
.tool-nav button:hover {
  color: var(--text);
  background: rgba(255,255,255,.045);
}
.toolnav a.is-active,
.toolnav button.is-active,
.toolnav a[aria-current="page"],
.tool-nav a.is-active,
.tool-nav button.is-active,
.tool-nav a[aria-current="page"] {
  color: var(--accent);
  background: rgba(89,168,255,.07);
  font-weight: 600;
}
.toolnav a.is-active::after,
.toolnav a[aria-current="page"]::after,
.tool-nav a.is-active::after,
.tool-nav a[aria-current="page"]::after {
  content: '';
  position: absolute;
  bottom: 0; left: 14px; right: 14px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.toolnav-track {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* ── Card ─────────────────────────────────────────────────────────────── */
.card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  padding: 28px 32px;
  box-shadow:
    0 1px 3px rgba(0,0,0,.18),
    0 8px 32px rgba(0,0,0,.12),
    var(--glass-inner),
    var(--glass-glow);
  transition:
    border-color var(--dur-slow) var(--ease-smooth),
    box-shadow var(--dur-slow) var(--ease-smooth);
}
.card:hover {
  border-color: var(--border3);
  box-shadow:
    0 1px 3px rgba(0,0,0,.18),
    0 14px 44px rgba(0,0,0,.14),
    var(--glass-inner),
    inset 0 0 80px rgba(89,168,255,.018);
}
.card + .card { margin-top: 20px; }

/* ── Tab switch (help page) ───────────────────────────────────────────── */
.tab-switch { display: flex; gap: var(--space-2); margin-bottom: 28px; flex-wrap: wrap; }
.tab-switch a {
  padding: 10px 22px; border-radius: var(--radius-sm); font-size: var(--fs-sm); font-weight: 500;
  color: var(--muted2); text-decoration: none; border: 1px solid var(--border2);
  transition: all var(--dur) var(--ease-smooth); min-height: 44px;
  display: inline-flex; align-items: center;
}
.tab-switch a[aria-current="page"] {
  color: var(--accent);
  background: rgba(89,168,255,.08);
  border-color: rgba(89,168,255,.25);
  box-shadow: 0 0 16px rgba(89,168,255,.06);
}
.tab-switch a:hover:not([aria-current="page"]) { color: var(--text); background: var(--surface2); border-color: var(--border3); }

/* ══════════════════════════════════════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════════════════════════════════════ */
.site-footer {
  margin-top: 80px;
  border-top: 1px solid var(--border2);
  width: 100vw;
  margin-left: calc(-50vw + 50%);
  background: var(--surface);
}
.site-footer a {
  color: var(--muted2);
  text-decoration: none;
  transition: color var(--dur) var(--ease-smooth);
}
.site-footer a:hover { color: var(--accent); }
.footer {
  border-top: 1px solid var(--border2);
  background: var(--surface);
  padding: 48px 24px 36px;
}

.footer-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 56px 24px 40px;
}
.footer-top {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 56px;
  margin-bottom: 48px;
}

/* Brand column */
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
}
.footer-logo-icon {
  width: 28px; height: 28px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: var(--fs-sm);
}
.footer-logo-text {
  font-size: var(--fs-md);
  font-weight: 700;
  color: var(--text);
  letter-spacing: -.3px;
}
.footer-logo-text span { color: var(--accent); }
.footer-tagline {
  font-size: var(--fs-sm);
  color: var(--muted);
  line-height: 1.6;
  margin: 0;
}

/* Links grid */
.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-7);
}
.footer-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.footer-col strong {
  font-size: var(--fs-xs);
  color: var(--muted);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-weight: 600;
}
.footer-col a {
  font-size: var(--fs-sm);
  color: var(--muted2);
  padding: 7px 0;
  min-height: 38px;
  display: flex;
  align-items: center;
  transition: color var(--dur) var(--ease-smooth);
}

/* Bottom bar */
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}
.footer-copy {
  font-size: var(--fs-xs);
  color: var(--muted);
  margin: 0;
}
.footer-copy a { color: var(--muted2); }
.footer-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-xs);
  color: var(--muted);
  font-family: var(--mono);
}
.footer-dot { opacity: .4; }

/* ══════════════════════════════════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  .topbar-tools { display: none; }
  .topbar-nav { display: none; }
  .topbar-actions { display: none; }
  .topbar-burger { display: flex; }
  .mobile-menu { display: block; }
}

@media (max-width: 600px) {
  .wrap { padding: 0 16px 0; }
  .card { padding: 24px 20px; border-radius: 10px; }
  .footer-top { grid-template-columns: 1fr; gap: var(--space-7); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-6); }
  .footer-bottom { flex-direction: column; gap: var(--space-3); text-align: center; }
  .footer-inner { padding: 40px 16px 32px; }
  .topbar-inner { padding: 0 16px; gap: var(--space-3); height: 56px; }
  .mobile-menu { top: 56px; max-height: calc(100vh - 56px); }
}

/* ── Legacy compat ──────────────────────────────────────────────────── */
.site-header { display: none; }
.nav-tabs { display: none; }
.nav-tab { display: none; }
.nav-tab--user { display: none; }

/* ── Export/Share bar ─────────────────────────────────────────────── */
.export-bar { display: flex; gap: var(--space-2); justify-content: flex-end; margin-bottom: 14px; }
.export-btn {
  padding: 8px 16px; background: var(--surface2); border: 1px solid var(--border2);
  border-radius: var(--radius-sm); color: var(--muted2); font-size: var(--fs-xs);
  font-weight: 600; font-family: var(--mono); cursor: pointer;
  transition: all var(--dur) var(--ease-smooth); min-height: 36px;
}
.export-btn:hover { color: var(--accent); border-color: rgba(89,168,255,.28); background: rgba(89,168,255,.06); }
.share-btn { font-family: var(--sans) !important; }
/* duplicate fadeInUp removed — toast uses toastSlideIn */

/* ── URL Analytics Card ──────────────────────────────────────────── */
.url-analytics-card {
  margin-top: 14px; padding: 16px 20px;
  background: rgba(89,168,255,.05);
  border: 1px solid rgba(89,168,255,.12);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  font-size: var(--fs-sm); color: var(--muted2);
  animation: uaCardFadeIn .4s var(--ease-out);
}
.url-analytics-card .ua-stat { display: flex; align-items: center; gap: 5px; }
.url-analytics-card .ua-stat strong { color: var(--accent); font-family: var(--mono); }
.url-analytics-card .ua-sep { width: 1px; height: 16px; background: var(--border2); }
.url-analytics-card .ua-sparkline { margin-left: auto; }
@keyframes uaCardFadeIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Language Switcher ───────────────────────────────────────────── */
.topbar-lang {
  padding: 6px 12px;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--muted2);
  text-decoration: none;
  border: 1px solid var(--border2);
  border-radius: 6px;
  font-family: var(--mono);
  transition: all var(--dur) var(--ease-smooth);
  letter-spacing: 0.5px;
}
.topbar-lang:hover {
  color: var(--text);
  border-color: var(--accent);
  background: rgba(89,168,255,.05);
}
.mobile-menu-links .topbar-lang {
  display: inline-block;
  margin: 4px 0;
}

/* ── Breadcrumbs ─────────────────────────────────────────────────── */
.breadcrumbs {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
  font-size: var(--fs-xs);
  line-height: 1;
}
.breadcrumbs-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  overflow-x: auto;
  gap: 0;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.breadcrumbs-inner::-webkit-scrollbar { display: none; }
.breadcrumbs-sep {
  color: var(--muted);
  margin: 0 8px;
  font-size: var(--fs-xs);
  flex-shrink: 0;
  opacity: .5;
}
.breadcrumbs-item {
  color: var(--muted2);
  text-decoration: none;
  white-space: nowrap;
  transition: color .15s var(--ease-smooth);
}
a.breadcrumbs-item:hover { color: var(--accent); }
.breadcrumbs-current { color: var(--text); font-weight: 500; }
@media (max-width: 768px) {
  .breadcrumbs { padding: 10px 0; }
  .breadcrumbs-inner { padding: 0 16px; }
  .breadcrumbs-sep { margin: 0 6px; }
}

/* ── Footer CTA (site-wide) ─────────────────────────────────────── */
.footer-cta {
  position: relative;
  overflow: hidden;
  max-width: var(--content-width);
  margin: 64px auto 0;
  padding: 56px 40px;
  text-align: center;
  background: linear-gradient(135deg, rgba(89,168,255,.05) 0%, rgba(146,120,244,.04) 100%);
  border: 1px solid rgba(89,168,255,.12);
  border-radius: var(--radius-lg);
}
.footer-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(89,168,255,.04) 0%, transparent 55%),
    radial-gradient(ellipse at 70% 50%, rgba(146,120,244,.03) 0%, transparent 55%);
  pointer-events: none;
}
.footer-cta h2 {
  position: relative;
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--text);
  margin: 0 0 12px;
  letter-spacing: -.01em;
}
.footer-cta p {
  position: relative;
  color: var(--muted2);
  font-size: var(--fs-base);
  margin: 0 0 28px;
  line-height: 1.6;
}
.footer-cta__buttons {
  position: relative;
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
}
.footer-cta__btn {
  padding: 13px 30px;
  border-radius: var(--radius-sm);
  font-size: var(--fs-base);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--dur) var(--ease-smooth);
  cursor: pointer;
}
.footer-cta__btn--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: var(--white);
  box-shadow: 0 2px 14px rgba(89,168,255,.2);
}
.footer-cta__btn--primary:hover {
  box-shadow: 0 8px 32px rgba(89,168,255,.35);
  transform: translateY(-2px);
}
.footer-cta__btn--outline {
  color: var(--muted2);
  border: 1px solid var(--border2);
  background: transparent;
}
.footer-cta__btn--outline:hover {
  background: rgba(89,168,255,.07);
  border-color: rgba(89,168,255,.45);
  transform: translateY(-1px);
}
@media (max-width: 768px) {
  .footer-cta { padding: 40px 24px; margin-top: 48px; border-radius: var(--radius); }
  .footer-cta h2 { font-size: var(--fs-lg); }
}

/* ══════════════════════════════════════════════════════════════════════════
   RESULT CTA — conversion block after tool results
   ══════════════════════════════════════════════════════════════════════════ */
.result-cta {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 24px;
  padding: 24px 28px;
  background: linear-gradient(135deg, rgba(89,168,255,.05) 0%, rgba(146,120,244,.04) 100%);
  border: 1px solid rgba(89,168,255,.12);
  border-radius: var(--radius);
  transition:
    border-color .3s var(--ease-smooth),
    box-shadow .3s var(--ease-smooth);
}
.result-cta:hover {
  border-color: rgba(89,168,255,.22);
  box-shadow: 0 4px 28px rgba(89,168,255,.07);
}
.result-cta__icon { font-size: 30px; flex-shrink: 0; }
.result-cta__text { flex: 1; display: flex; flex-direction: column; gap: var(--space-1); }
.result-cta__text strong { font-size: var(--fs-base); color: var(--text); font-weight: 600; }
.result-cta__text span { font-size: var(--fs-sm); color: var(--muted2); line-height: 1.5; }
.result-cta__btn {
  display: inline-flex; align-items: center;
  padding: 11px 24px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: var(--white); border-radius: var(--radius-sm);
  font-size: var(--fs-sm); font-weight: 600;
  text-decoration: none; white-space: nowrap;
  transition: all var(--dur) var(--ease-smooth);
  box-shadow: 0 2px 12px rgba(89,168,255,.2);
}
.result-cta__btn:hover {
  box-shadow: 0 4px 24px rgba(89,168,255,.35);
  transform: translateY(-1px);
}
@media (max-width: 600px) {
  .result-cta { flex-direction: column; text-align: center; padding: 20px; }
  .result-cta__btn { width: 100%; justify-content: center; }
}

/* ══════════════════════════════════════════════════════════════════════════
   SHARED EFFECTS — Tool Hero, Reveal, Auth, 404
   ══════════════════════════════════════════════════════════════════════════ */

/* ── Tool Hero ────────────────────────────────────────────────────────── */
.tool-hero {
  position: relative;
  padding-top: var(--space-5);
  margin-bottom: var(--space-7);
}
.tool-hero > .hero-grid {
  position: absolute;
  inset: -40px -60px;
  background-image: radial-gradient(circle, rgba(89,168,255,.035) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(ellipse 60% 70% at 50% 30%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 60% 70% at 50% 30%, black 20%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}
.tool-hero > .card {
  position: relative;
  z-index: 1;
  border-color: rgba(89,168,255,.1);
  box-shadow:
    0 0 44px rgba(89,168,255,.025),
    0 8px 36px rgba(0,0,0,.14),
    var(--glass-inner),
    inset 0 0 80px rgba(89,168,255,.012);
  transition:
    border-color var(--dur-slow) var(--ease-smooth),
    box-shadow var(--dur-slow) var(--ease-smooth);
}
.tool-hero > .card:focus-within {
  border-color: rgba(89,168,255,.2);
  box-shadow:
    0 0 64px rgba(89,168,255,.05),
    0 12px 44px rgba(0,0,0,.16),
    var(--glass-inner),
    inset 0 0 100px rgba(89,168,255,.02);
}

/* ── Enhanced tool-title ──────────────────────────────────────────────── */
.tool-hero .tool-title {
  font-size: var(--fs-xl);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.3;
}
.tool-hero .tool-desc {
  color: var(--muted2);
  font-size: var(--fs-base);
  line-height: 1.6;
  margin-top: 6px;
}

/* ── Scroll Reveal ────────────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity .5s var(--ease-out),
    transform .5s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.no-io .reveal { opacity: 1; transform: none; }

/* ── Auth pages ───────────────────────────────────────────────────────── */
.auth-card {
  position: relative;
  border-color: rgba(89,168,255,.1) !important;
  box-shadow:
    0 0 64px rgba(89,168,255,.035),
    0 12px 44px rgba(0,0,0,.16),
    var(--glass-inner),
    inset 0 0 80px rgba(89,168,255,.012);
}
.auth-card::before {
  content: '';
  position: absolute;
  inset: -80px;
  background: radial-gradient(ellipse at 50% 0%, rgba(89,168,255,.05) 0%, transparent 55%);
  pointer-events: none;
  z-index: -1;
}

/* ── 404 page ─────────────────────────────────────────────────────────── */
.error-404-code {
  font-family: var(--mono);
  font-size: 7rem;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, var(--muted) 0%, var(--accent) 50%, var(--accent2) 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift404 4s ease-in-out infinite;
  margin-bottom: 20px;
}
@keyframes gradientShift404 {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* ── Pricing / Articles gradient titles ───────────────────────────────── */
.pricing-page > h1,
.pricing-page > .pricing-hero h1,
.articles-page > h1,
.compare-page > h1 {
  background: linear-gradient(135deg, var(--text) 30%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ══════════════════════════════════════════════════════════════════════════
   UTILITY HELPERS
   ══════════════════════════════════════════════════════════════════════════ */
.text-accent { color: var(--accent); }
.text-muted { color: var(--muted); }
.text-muted2 { color: var(--muted2); }
.text-green { color: var(--green); }
.text-red { color: var(--red); }
.text-yellow { color: var(--yellow); }
.text-mono { font-family: var(--mono); }
.text-sm { font-size: var(--fs-sm); }
.text-xs { font-size: var(--fs-xs); }
.fw-500 { font-weight: 500; }
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.gap-1 { gap: var(--space-2); }
.gap-2 { gap: var(--space-4); }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.flex-wrap { flex-wrap: wrap; }

/* ── Mobile Improvements ── */

@media (max-width: 768px) {
  /* Ensure minimum 44px touch targets */
  .btn, .btn-primary, .btn-secondary, .btn-outline, button[type="submit"] {
    min-height: 44px;
    padding: 12px 20px;
  }
  input[type="text"], input[type="email"], input[type="password"], input[type="url"],
  input[type="search"], input[type="tel"], select, textarea, .input {
    min-height: 44px;
    font-size: var(--fs-base); /* prevents iOS zoom */
  }
  /* Better card padding on mobile */
  .card { padding: 22px 18px; }
  /* Footer mobile improvements */
  .footer-grid { grid-template-columns: 1fr !important; gap: var(--space-6); }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: var(--space-3); text-align: center; }
  /* Better section spacing */
  .home-section { padding: 40px 16px; }
  .home-section__title { font-size: var(--fs-md); }
  .home-section__sub { font-size: var(--fs-sm); }
  /* Tools grid single column on small screens */
  .tools-grid { grid-template-columns: 1fr !important; gap: var(--space-3); }
  /* Feature cards stack */
  .features-grid { grid-template-columns: 1fr !important; gap: var(--space-4); }
  /* Trust bar wrap */
  .trust-bar {
    flex-wrap: wrap;
    gap: var(--space-4);
    justify-content: center;
  }
  .trust-item { min-width: 140px; text-align: center; }
  /* Article cards stack */
  .home-articles { grid-template-columns: 1fr !important; gap: var(--space-3); }
  /* Compare cards stack */
  .compare-grid { grid-template-columns: 1fr !important; gap: var(--space-3); }
  /* Result CTA stack */
  .result-cta { flex-direction: column; text-align: center; gap: var(--space-3); padding: 16px; }
  .result-cta__actions { width: 100%; justify-content: center; }
  /* Export bar */
  .export-bar { justify-content: center; }
  /* URL analytics card */
  .url-analytics-card { flex-direction: column; gap: var(--space-2); align-items: flex-start; }
  .url-analytics-card .ua-sep { display: none; }
  .url-analytics-card .ua-sparkline { margin-left: 0; width: 100%; }
  /* Tool nav tabs mobile */
  .toolnav, .tool-nav { gap: 2px; padding: 2px; }
  .toolnav a, .toolnav button, .tool-nav a, .tool-nav button {
    padding: 8px 14px;
    min-height: 44px;
    font-size: var(--fs-xs);
  }
}

@media (max-width: 480px) {
  /* Extra small screens */
  .hero-title { font-size: 1.35rem !important; line-height: 1.3; }
  .hero-sub { font-size: var(--fs-sm); }
  .tool-title { font-size: var(--fs-md); }
  .tool-desc { font-size: var(--fs-sm); }
  .topbar-inner { padding: 0 12px; height: 52px; }
  .mobile-menu { top: 52px; max-height: calc(100vh - 52px); }
  .wrap { padding: 0 12px; }
  /* Steps horizontal to vertical */
  .steps { flex-direction: column !important; gap: var(--space-5); }
  .step__connector { display: none; }
  /* Comparison table scroll hint */
  .comparison-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 0 -12px;
    padding: 0 12px;
  }
}

/* ==========================================================================
   AI Recommendations Widget
   ========================================================================== */

.recs-card {
    margin-bottom: 1.5rem;
}

.recs-card h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.recs-card h3 svg {
    flex-shrink: 0;
}

#ai-recommendations {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.rec-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.015);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: all var(--dur) var(--ease-smooth);
}

.rec-item:hover {
    background: rgba(255, 255, 255, 0.035);
    border-color: var(--border2);
}

.rec-critical {
    border-left: 3px solid var(--danger);
}

.rec-warning {
    border-left: 3px solid var(--warn);
}

.rec-info {
    border-left: 3px solid var(--accent);
}

.rec-success {
    border-left: 3px solid var(--green);
}

.rec-icon {
    flex-shrink: 0;
    margin-top: 2px;
}

.rec-content {
    flex: 1;
    min-width: 0;
}

.rec-title {
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.25rem;
}

.rec-desc {
    font-size: var(--fs-xs);
    color: var(--muted);
    line-height: 1.5;
}

.rec-action {
    flex-shrink: 0;
    color: var(--muted);
    padding: 0.25rem;
    transition: color var(--dur) var(--ease-smooth);
}

.rec-action:hover {
    color: var(--accent);
}

.rec-empty {
    text-align: center;
    color: var(--muted);
    padding: 1.5rem 1rem;
    font-size: var(--fs-sm);
}

@media (max-width: 768px) {
    .rec-item {
        padding: 0.6rem 0.75rem;
    }

    .rec-desc {
        font-size: var(--fs-xs);
    }
}

/* ========== FAQ Section ========== */
.faq-section { max-width: var(--content-width, 1100px); margin: var(--space-10) auto var(--space-9); padding: 0 1.5rem; }
.faq-section h2 { font-size: var(--fs-lg); margin-bottom: 1.25rem; color: var(--text); }
.faq-list { display: flex; flex-direction: column; gap: 0.5rem; }
.faq-item { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; transition: border-color .2s; }
.faq-item[open] { border-color: var(--accent); }
.faq-item summary { padding: 14px 18px; font-weight: 600; font-size: var(--fs-base); color: var(--text); cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::after { content: "+"; font-size: var(--fs-md); color: var(--muted); transition: transform .2s; }
.faq-item[open] summary::after { content: "\2212"; color: var(--accent); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item p { padding: 0 18px 14px; color: var(--muted); line-height: 1.6; font-size: var(--fs-sm); }

/* ── SEO text sections on tool pages ────────────────────────────── */
.seo-section {
  max-width: 900px;
  margin: 2.5rem auto 0;
  padding: 0 16px;
}
.seo-section h2 {
  font-size: var(--fs-md);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 1rem;
}
.seo-section p {
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--text2);
  margin-bottom: 1.5rem;
}

/* ── Nav Usage Meter ──────────────────────────────────── */
.nav-meter {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 10px;
  border-radius: 7px;
  text-decoration: none;
  border: 1px solid var(--border2);
  background: rgba(255,255,255,.03);
  transition: background .15s ease, border-color .15s ease;
}
.nav-meter:hover {
  background: rgba(255,255,255,.06);
  border-color: rgba(89,168,255,.25);
}
.nav-meter__label {
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--muted2);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.nav-meter__bar {
  width: 40px;
  height: 4px;
  background: rgba(255,255,255,.08);
  border-radius: 2px;
  overflow: hidden;
  flex-shrink: 0;
}
.nav-meter__fill {
  display: block;
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width .3s ease;
}
.nav-meter--warn .nav-meter__fill { background: var(--orange, #f59e0b); }
.nav-meter--warn .nav-meter__label { color: var(--orange, #f59e0b); }
.nav-meter--full .nav-meter__fill { background: var(--red, #f87171); }
.nav-meter--full .nav-meter__label { color: var(--red, #f87171); }
@media (max-width: 991px) { .nav-meter { display: none; } }

/* ══ GROUPED NAV ══ */
.topbar-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}
.topbar-group {
  position: relative;
}
.topbar-group-btn {
  display: inline-flex;
  align-items: center;
  gap: 3px;
}
.topbar-group-arrow {
  font-size: 8px;
  opacity: .5;
  transition: transform .2s var(--ease-out);
  margin-left: 1px;
}
.topbar-group.open .topbar-group-arrow {
  transform: rotate(180deg);
  opacity: .8;
}
.topbar-group-drop {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 220px;
  background: rgba(20, 23, 31, .97);
  backdrop-filter: blur(28px) saturate(1.2);
  -webkit-backdrop-filter: blur(28px) saturate(1.2);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  padding: 6px;
  box-shadow:
    0 20px 56px rgba(0,0,0,.5),
    0 4px 12px rgba(0,0,0,.2),
    var(--glass-inner);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity .2s var(--ease-smooth),
    transform .25s var(--ease-out);
  z-index: var(--z-dropdown);
}
.topbar-group.open .topbar-group-drop {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
/* Right-anchored dropdowns (last 2 groups) to prevent off-screen overflow */
#navGroupSecurity .topbar-group-drop,
#navGroupDev .topbar-group-drop {
  left: auto;
  right: 0;
  transform: translateX(0) translateY(-6px);
}
#navGroupSecurity.open .topbar-group-drop,
#navGroupDev.open .topbar-group-drop {
  transform: translateX(0) translateY(0);
}
/* Footer 4-column variant */
.footer-grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 768px) { .footer-grid--4 { grid-template-columns: 1fr 1fr; } }

/* ── Tool card icon color classes (for index-blocks.php tool grid) ────── */
.tool-card__icon.tc-blue   { background: rgba(91,138,248,.12); color: var(--accent); }
.tool-card__icon.tc-cyan   { background: rgba(34,211,238,.12); color: var(--cyan); }
.tool-card__icon.tc-green  { background: rgba(52,211,153,.12); color: var(--green); }
.tool-card__icon.tc-yellow { background: rgba(251,191,36,.12); color: var(--yellow); }
.tool-card__icon.tc-orange { background: rgba(249,115,22,.12); color: var(--orange); }
.tool-card__icon.tc-red    { background: rgba(248,113,113,.12); color: var(--red); }
.tool-card__icon.tc-purple { background: rgba(124,96,245,.12); color: var(--accent2); }
.tool-card__icon.tc-gray   { background: rgba(148,163,184,.12); color: var(--muted2); }

/* ── All tools grouped layout ────────────────────────────────────────── */
.home-tools-all { display: flex; flex-direction: column; gap: var(--space-7); }

.home-tools-group__head {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 16px;
}
.home-tools-group__icon {
  font-size: var(--fs-md); width: 36px; height: 36px; border-radius: 10px;
  background: var(--surface2); display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.home-tools-group__title {
  font-size: var(--fs-base); font-weight: 700; color: var(--text); flex: 1;
  margin: 0;
}
.home-tools-group__count {
  font-size: var(--fs-xs); padding: 2px 8px; border-radius: 20px;
  background: var(--surface2); color: var(--muted);
  border: 1px solid var(--border);
}

.tools-grid--compact .tool-card { padding: 14px 16px; }
.tools-grid--compact .tool-card__icon {
  width: 36px; height: 36px; font-size: var(--fs-base); border-radius: 9px;
  flex-shrink: 0;
}
.tools-grid--compact .tool-card__body h3 { font-size: var(--fs-sm); }
.tools-grid--compact .tool-card__body p  { font-size: var(--fs-xs); }





/* ── Share toast ──────────────────────────────────────────────────────── */
.share-toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  z-index: var(--z-toast, 300);
  background: var(--surface2); border: 1px solid var(--border2);
  border-radius: var(--radius); padding: 14px 18px;
  box-shadow: var(--shadow-xl, 0 8px 32px rgba(0,0,0,.5));
  min-width: 260px; max-width: 90vw;
  display: flex; flex-direction: column; gap: 10px;
  animation: toastSlideIn .25s var(--ease-out);
}
.share-toast__header {
  font-size: var(--fs-xs); font-weight: 600; color: var(--muted);
  text-transform: uppercase; letter-spacing: 1px;
}
.share-toast__url { display: flex; gap: var(--space-2); align-items: center; }
.share-toast__input {
  flex: 1; background: var(--surface); border: 1px solid var(--border2);
  border-radius: 6px; padding: 7px 10px; color: var(--muted2);
  font-family: var(--mono); font-size: var(--fs-xs); outline: none;
}
.share-toast__copy {
  padding: 7px 14px; background: rgba(89,168,255,.12);
  border: 1px solid rgba(89,168,255,.3); border-radius: 6px;
  color: var(--accent); font-size: var(--fs-xs); font-weight: 600;
  font-family: var(--sans); cursor: pointer; white-space: nowrap;
  transition: all var(--dur) var(--ease-smooth);
}
.share-toast__copy:hover { background: rgba(89,168,255,.2); }
.share-toast__actions {
  display: flex; gap: var(--space-2); align-items: center; justify-content: space-between;
}
.share-toast__tg {
  font-size: var(--fs-xs); color: var(--cyan); text-decoration: none;
}
.share-toast__tg:hover { text-decoration: underline; }
.share-toast__close {
  background: none; border: none; color: var(--muted2);
  font-size: var(--fs-xs); cursor: pointer; font-family: var(--sans);
  padding: 2px 6px; border-radius: 4px; transition: all var(--dur);
}
.share-toast__close:hover { color: var(--text); }
@media (max-width: 600px) {
  .share-toast { left: 16px; right: 16px; transform: none; bottom: 16px; min-width: unset; }
}

/* ── Related tools cross-linking ───────────────────────────────────── */
.related-tools { padding: var(--space-9) 0; }
.related-tools__title { font-size: var(--fs-lg); font-weight: 600; color: var(--text); margin: 0 0 16px; }
.related-tools__grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 10px; }
.related-tool-card {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px; border-radius: var(--radius-sm);
  background: var(--surface); border: 1px solid var(--border);
  color: var(--text2); text-decoration: none; font-size: var(--fs-sm);
  transition: border-color var(--dur) var(--ease-out), background var(--dur);
}
.related-tool-card:hover { border-color: var(--accent); background: var(--surface2); color: var(--text); }
.related-tool-card__icon { font-size: var(--fs-md); flex-shrink: 0; }
.related-tool-card__name { font-weight: 500; }
@media (max-width: 480px) { .related-tools__grid { grid-template-columns: 1fr 1fr; } }


/* ── Tool form row — responsive stack ──────────────────────────────── */
.form-row {
  display: flex; gap: 10px; align-items: stretch;
}
.form-row .input-wrap { flex: 1; }
.form-row .input-wrap--port { max-width: 90px; flex: none; }
.form-row .btn { flex-shrink: 0; min-width: 140px; }

@media (max-width: 600px) {
  .form-row {
    flex-direction: column;
  }
  .form-row .btn {
    width: 100%; min-width: unset;
    padding: 14px 24px; font-size: var(--fs-base);
  }
  .form-row .input-wrap--port { max-width: 100%; }
  .speed-strategy { justify-content: center; }
}

/* ── Mobile heading scale ──────────────────────────────────────────── */
@media (max-width: 600px) {
  h1, .tool-title { font-size: var(--fs-xl); }
  h2              { font-size: var(--fs-lg); }
  h3              { font-size: var(--fs-md); }
}
@media (max-width: 480px) {
  h1, .tool-title { font-size: var(--fs-lg); }
}
/* ── Accessibility: reduced motion ─────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Footer separator between sub-groups */
.footer-sep { display: block; height: 8px; }


.footer-grid--5 { grid-template-columns: repeat(5, 1fr); }
@media (max-width: 1024px) { .footer-grid--5 { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 768px) { .footer-grid--5 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .footer-grid--5 { grid-template-columns: 1fr; } }


/* ── 2026 Design Update ─────────────────────────── */
:root {
  --section-alt: #0f1219;
  --gradient-hero: linear-gradient(135deg, rgba(89,168,255,0.06), rgba(146,120,244,0.04));
  --gradient-accent: linear-gradient(135deg, var(--accent), var(--accent2, #9278f4));
  --card-hover-border: rgba(89,168,255,0.15);
}
.section-alt { background: var(--section-alt); }
.glass-subtle {
  backdrop-filter: blur(12px);
  background: rgba(20,23,31,0.6);
  border: 1px solid rgba(255,255,255,0.06);
}

/* ── Related Tools ────────────────────────────────────────────── */
.related-tools {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.related-tools__title {
  font-size: var(--fs-base);
  font-weight: 600;
  color: var(--text);
  margin: 0 0 16px;
}
.related-tools__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
}
.related-tools__card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  color: var(--text);
  font-size: var(--fs-sm);
  transition: border-color 0.15s, transform 0.15s;
}
.related-tools__card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
  color: var(--text);
}
.related-tools__icon {
  font-size: var(--fs-md);
  flex-shrink: 0;
}
.related-tools__name {
  font-weight: 500;
}
@media (max-width: 768px) {
  .related-tools__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 400px) {
  .related-tools__grid {
    grid-template-columns: 1fr;
  }
}

[aria-hidden='true'] {
  pointer-events: none;
}

/* ── Testimonial component ────────────────────────────────────── */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  max-width: 1000px;
  margin: 0 auto;
}
.testimonial-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: border-color 0.2s;
}
.testimonial-card:hover { border-color: rgba(91,138,248,0.3); }
.testimonial-text {
  font-size: var(--fs-sm);
  line-height: 1.6;
  color: var(--text);
  flex: 1;
}
.testimonial-text::before {
  content: '\201C';
  color: var(--accent);
  font-size: var(--fs-lg);
  line-height: 0;
  vertical-align: -6px;
  margin-right: 2px;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 10px;
}
.testimonial-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(91,138,248,0.15);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: var(--fs-sm);
  flex-shrink: 0;
}
.testimonial-name {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text);
}
.testimonial-role {
  font-size: var(--fs-xs);
  color: var(--muted);
}
@media (max-width: 768px) {
  .testimonials-grid { grid-template-columns: 1fr; }
}