/* ========================================
   CloudTools.cloud — Premium Design System
   Version 2.0 | Full Dark Theme
   Encoding: UTF-8 (no special chars in comments)
   ======================================== */

/* === FONTS (Self-hosted for speed) === */
@font-face {
  font-family: 'Inter';
  src: url('/assets/fonts/Inter-w400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Inter';
  src: url('/assets/fonts/Inter-w500.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Inter';
  src: url('/assets/fonts/Inter-w600.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Inter';
  src: url('/assets/fonts/Inter-w700.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Inter';
  src: url('/assets/fonts/Inter-w800.woff2') format('woff2');
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Inter';
  src: url('/assets/fonts/Inter-w900.woff2') format('woff2');
  font-weight: 900;
  font-style: normal;
  font-display: swap;
}

/* === DESIGN TOKENS === */
:root {
  /* Colors */
  --blue:       #3B82F6;
  --blue-l:     #60A5FA;
  --blue-d:     #2563EB;
  --purple:     #8B5CF6;
  --purple-l:   #A78BFA;
  --green:      #10B981;
  --amber:      #F59E0B;
  --red:        #EF4444;
  --cyan:       #06B6D4;
  --orange:     #F97316;

  /* Backgrounds */
  --bg:         #080D1A;
  --bg2:        #0B1120;
  --bg-card:    #0F1629;
  --bg-card2:   #161E35;
  --bg-input:   #0D1526;

  /* Borders */
  --b1:         #1A2540;
  --b2:         #243354;
  --b3:         #2E4070;

  /* Text */
  --t1:         #F8FAFC;
  --t2:         #CBD5E1;
  --t3:         #94A3B8;
  --t4:         #64748B;
  --t5:         #475569;

  /* Radius */
  --r-xl:       20px;
  --r:          14px;
  --r-sm:       10px;
  --r-xs:       7px;

  /* Shadows */
  --sh-sm:      0 1px 4px rgba(0,0,0,0.5);
  --sh:         0 4px 24px rgba(0,0,0,0.55);
  --sh-lg:      0 8px 48px rgba(0,0,0,0.65);
  --sh-blue:    0 0 0 3px rgba(59,130,246,0.25), 0 4px 24px rgba(59,130,246,0.2);
  --sh-card:    0 2px 16px rgba(0,0,0,0.4);

  /* Transitions */
  --tr:         0.18s ease;
  --tr-slow:    0.32s ease;

  /* Gradients */
  --grad:       linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
  --grad-glow:  linear-gradient(135deg, rgba(59,130,246,0.12) 0%, rgba(139,92,246,0.12) 100%);
  --grad-hero:  radial-gradient(ellipse 80% 60% at 15% 20%, rgba(59,130,246,0.14) 0%, transparent 70%),
                radial-gradient(ellipse 60% 50% at 85% 80%, rgba(139,92,246,0.14) 0%, transparent 70%);

  /* Typography */
  --font:       'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

/* === RESET === */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font);
  background-color: var(--bg);
  color: var(--t1);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--blue);
  text-decoration: none;
  transition: color var(--tr);
}
a:hover { color: var(--blue-l); }

img, svg { display: block; max-width: 100%; }
button { cursor: pointer; font-family: var(--font); border: none; }
input, textarea, select { font-family: var(--font); }

/* === LAYOUT === */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}
.container-sm {
  max-width: 840px;
  margin: 0 auto;
  padding: 0 24px;
}
main { flex: 1; }

/* === HEADER === */
#site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(8, 13, 26, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--b1);
  transition: box-shadow var(--tr);
}
#site-header.scrolled {
  box-shadow: 0 4px 32px rgba(0,0,0,0.6);
}

.h-inner {
  display: flex;
  align-items: center;
  height: 66px;
  gap: 6px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
  margin-right: 28px;
}
.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--grad);
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px rgba(59,130,246,0.4);
  flex-shrink: 0;
  position: relative;
}
.logo-icon::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 10px;
  background: var(--grad);
  opacity: 0.4;
  filter: blur(8px);
  z-index: -1;
}
.logo-text {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1;
  display: flex;
  align-items: baseline;
}
.logo-text .l1 { color: var(--t1); }
.logo-text .l2 { color: var(--blue); }
.logo-text .l3 {
  color: var(--t4);
  font-size: 12px;
  font-weight: 600;
  margin-left: 1px;
}

/* Nav Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 1px;
  flex: 1;
}
.nav-links a {
  padding: 6px 11px;
  border-radius: var(--r-xs);
  color: var(--t4);
  font-size: 13px;
  font-weight: 500;
  transition: all var(--tr);
  white-space: nowrap;
  text-decoration: none;
}
.nav-links a:hover {
  color: var(--t1);
  background: rgba(255,255,255,0.06);
}
.nav-links a.active { color: var(--blue); }

.nav-spacer { flex: 1; }

/* Nav Badge */
.nav-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(16,185,129,0.08);
  border: 1px solid rgba(16,185,129,0.2);
  color: #10B981;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
  white-space: nowrap;
  flex-shrink: 0;
}

/* Language Switcher */
.lang-wrap {
  position: relative;
  margin-left: 8px;
  flex-shrink: 0;
}
.lang-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--b2);
  color: var(--t3);
  padding: 5px 10px;
  border-radius: var(--r-xs);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--tr);
}
.lang-btn:hover { border-color: var(--blue); color: var(--blue); }
.lang-menu {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  background: var(--bg-card);
  border: 1px solid var(--b2);
  border-radius: var(--r-sm);
  padding: 6px;
  z-index: 1001;
  min-width: 160px;
  box-shadow: var(--sh);
}
.lang-menu.open { display: block; }
.lang-menu a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  font-size: 13px;
  color: var(--t3);
  border-radius: var(--r-xs);
  transition: all var(--tr);
  text-decoration: none;
}
.lang-menu a:hover { background: var(--b1); color: var(--t1); }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  padding: 8px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--b2);
  border-radius: var(--r-xs);
  color: var(--t3);
  margin-left: 6px;
}
.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: all 0.25s ease;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: absolute;
  left: 0;
  right: 0;
  top: 66px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--b1);
  padding: 12px;
  z-index: 999;
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  padding: 10px 14px;
  color: var(--t3);
  font-size: 14px;
  border-radius: var(--r-xs);
  text-decoration: none;
  transition: all var(--tr);
}
.mobile-menu a:hover { background: var(--b1); color: var(--t1); }

/* === BREADCRUMB === */
.breadcrumb {
  background: var(--bg2);
  border-bottom: 1px solid var(--b1);
  padding: 11px 0;
}
.breadcrumb ol {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  font-size: 12.5px;
  color: var(--t5);
  flex-wrap: wrap;
}
.breadcrumb li + li::before {
  content: '/';
  color: var(--b3);
  margin-right: 6px;
}
.breadcrumb a { color: var(--t5); }
.breadcrumb a:hover { color: var(--blue); }
.breadcrumb li:last-child { color: var(--t4); }

/* === HERO (Homepage) === */
.hero {
  padding: 100px 0 80px;
  background: var(--bg), var(--grad-hero);
  background-blend-mode: normal;
  text-align: center;
  overflow: hidden;
  position: relative;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 30px 30px;
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(59,130,246,0.08);
  border: 1px solid rgba(59,130,246,0.25);
  color: var(--blue);
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 600;
  margin-bottom: 28px;
  animation: fadeUp 0.55s ease both;
}

.hero h1 {
  font-size: clamp(36px, 5.5vw, 68px);
  font-weight: 900;
  letter-spacing: -2.5px;
  line-height: 1.06;
  margin-bottom: 22px;
  animation: fadeUp 0.55s 0.08s ease both;
}
.hero h1 .grad {
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 17px;
  color: var(--t3);
  max-width: 540px;
  margin: 0 auto 40px;
  line-height: 1.75;
  animation: fadeUp 0.55s 0.16s ease both;
}

/* Search */
.search-wrap {
  max-width: 540px;
  margin: 0 auto 60px;
  position: relative;
  animation: fadeUp 0.55s 0.24s ease both;
}
.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--t5);
  pointer-events: none;
  width: 18px;
  height: 18px;
}
.search-input {
  width: 100%;
  padding: 15px 18px 15px 46px;
  background: var(--bg-card);
  border: 1px solid var(--b2);
  border-radius: 999px;
  color: var(--t1);
  font-size: 15px;
  outline: none;
  transition: all var(--tr);
}
.search-input:focus {
  border-color: var(--blue);
  box-shadow: var(--sh-blue);
}
.search-input::placeholder { color: var(--t5); }

/* Stats */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 52px;
  flex-wrap: wrap;
  animation: fadeUp 0.55s 0.32s ease both;
}
.stat .num {
  font-size: 34px;
  font-weight: 900;
  letter-spacing: -1px;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat .lbl {
  font-size: 12.5px;
  color: var(--t5);
  margin-top: 3px;
  font-weight: 500;
}

/* === CATEGORY SECTION === */
.cat-section { padding: 56px 0 0; }
.cat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--b1);
}
.cat-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.cat-header h2 {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.3px;
}
.cat-count {
  background: var(--bg-card2);
  border: 1px solid var(--b2);
  border-radius: 999px;
  padding: 2px 9px;
  font-size: 11px;
  color: var(--t5);
  font-weight: 600;
}

/* === TOOL GRID === */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(258px, 1fr));
  gap: 14px;
  margin-bottom: 56px;
}

/* === TOOL CARD === */
.tool-card-link {
  background: var(--bg-card);
  border: 1px solid var(--b1);
  border-radius: var(--r);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  transition: all var(--tr-slow);
  position: relative;
  overflow: hidden;
}
.tool-card-link::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-glow);
  opacity: 0;
  transition: opacity var(--tr-slow);
}
.tool-card-link:hover {
  border-color: rgba(59,130,246,0.5);
  transform: translateY(-3px);
  box-shadow: var(--sh-card), 0 0 24px rgba(59,130,246,0.12);
  text-decoration: none;
}
.tool-card-link:hover::before { opacity: 1; }

.tc-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--r-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
  border: 1px solid var(--b2);
  background: var(--bg-card2);
  position: relative;
  z-index: 1;
}
.tool-card-link h3 {
  font-size: 14.5px;
  font-weight: 650;
  color: var(--t1);
  line-height: 1.3;
  position: relative;
  z-index: 1;
}
.tool-card-link p {
  font-size: 12.5px;
  color: var(--t5);
  line-height: 1.55;
  flex: 1;
  position: relative;
  z-index: 1;
}
.tc-cta {
  font-size: 12px;
  color: var(--blue);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
  position: relative;
  z-index: 1;
}

/* === TOOL HERO (Tool Pages) === */
.tool-hero {
  padding: 36px 0 28px;
  background: linear-gradient(180deg, var(--bg2) 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--b1);
}
.tool-hero-inner {
  display: flex;
  align-items: flex-start;
  gap: 22px;
}
.tool-hero-icon {
  width: 58px;
  height: 58px;
  border-radius: var(--r);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  flex-shrink: 0;
  background: var(--grad);
  box-shadow: 0 0 30px rgba(59,130,246,0.3);
  position: relative;
}
.tool-hero-icon::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 16px;
  background: var(--grad);
  opacity: 0.25;
  filter: blur(10px);
  z-index: -1;
}
.tool-hero h1 {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
  line-height: 1.2;
}
.tool-hero-desc {
  color: var(--t3);
  font-size: 15px;
  max-width: 580px;
  line-height: 1.65;
  margin-bottom: 14px;
}
.tool-badges { display: flex; gap: 7px; flex-wrap: wrap; }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 11px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
}
.badge-free {
  background: rgba(16,185,129,0.08);
  border: 1px solid rgba(16,185,129,0.2);
  color: #10B981;
}
.badge-fast {
  background: rgba(59,130,246,0.08);
  border: 1px solid rgba(59,130,246,0.2);
  color: var(--blue);
}
.badge-safe {
  background: rgba(139,92,246,0.08);
  border: 1px solid rgba(139,92,246,0.2);
  color: var(--purple);
}

/* === AD CONTAINERS === */
.ad-zone {
  text-align: center;
  min-height: 90px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px;
  border-radius: var(--r-sm);
}
.ad-label {
  font-size: 9.5px;
  color: var(--t5);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
  font-weight: 600;
}
.ad-top {
  background: var(--bg2);
  border-bottom: 1px solid var(--b1);
  padding: 14px 0;
}
.ad-mid {
  background: var(--bg-card);
  border: 1px solid var(--b1);
  border-radius: var(--r-sm);
  margin: 24px 0;
}
.ad-bottom {
  border-top: 1px solid var(--b1);
  padding: 16px 0;
  background: var(--bg2);
}

/* === TOOL WIDGET AREA === */
.tool-area { padding: 32px 0; }

/* Form elements */
.label {
  display: block;
  font-size: 11.5px;
  font-weight: 700;
  color: var(--t4);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-bottom: 7px;
}
.input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--b2);
  border-radius: var(--r-xs);
  color: var(--t1);
  font-size: 14px;
  padding: 11px 14px;
  outline: none;
  transition: border-color var(--tr), box-shadow var(--tr);
  font-family: var(--font);
}
.input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.12);
}
.input::placeholder { color: var(--t5); }
.input[type="color"] {
  padding: 4px 6px;
  height: 42px;
  cursor: pointer;
}
textarea.input { resize: vertical; min-height: 100px; }
select.input { cursor: pointer; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 11px 20px;
  border-radius: var(--r-xs);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--tr);
  font-family: var(--font);
  text-decoration: none;
  border: none;
  outline: none;
  white-space: nowrap;
  position: relative;
}
.btn-primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 2px 12px rgba(59,130,246,0.3);
}
.btn-primary:hover {
  background: var(--blue-l);
  transform: translateY(-1px);
  box-shadow: 0 4px 18px rgba(59,130,246,0.4);
  color: #fff;
}
.btn-primary:active { transform: translateY(0); }
.btn-outline {
  background: transparent;
  color: var(--t3);
  border: 1px solid var(--b2);
}
.btn-outline:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: rgba(59,130,246,0.06);
}
.btn-grad {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 2px 16px rgba(59,130,246,0.35);
}
.btn-grad:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 22px rgba(59,130,246,0.45);
  color: #fff;
}
.btn-lg { padding: 14px 26px; font-size: 15px; }
.btn-sm { padding: 7px 13px; font-size: 12.5px; }
.btn-block { width: 100%; }
.btn-danger {
  background: rgba(239,68,68,0.1);
  border: 1px solid rgba(239,68,68,0.3);
  color: #EF4444;
}
.btn-danger:hover {
  background: rgba(239,68,68,0.2);
  border-color: #EF4444;
  color: #EF4444;
}

/* Tool Card (Inner tool UI) */
.tool-box {
  background: var(--bg-card);
  border: 1px solid var(--b1);
  border-radius: var(--r);
  padding: 26px;
}
.tool-box-inner { padding: 24px; }

/* Grid helpers */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 10px; }
@media(max-width:580px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

/* Result cards */
.result-card {
  background: var(--bg-card2);
  border: 1px solid var(--b2);
  border-radius: var(--r-sm);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: border-color var(--tr);
}
.result-card:hover { border-color: var(--blue); }
.result-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--t1);
  word-break: break-all;
}
.stat-card {
  background: var(--bg-card2);
  border: 1px solid var(--b1);
  border-radius: var(--r-sm);
  padding: 14px;
  text-align: center;
}
.stat-card .sc-label {
  font-size: 10.5px;
  font-weight: 700;
  color: var(--t5);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.stat-card .sc-value {
  font-size: 22px;
  font-weight: 800;
  color: var(--blue);
  margin-top: 5px;
  line-height: 1;
}
.stat-card .sc-unit {
  font-size: 11px;
  color: var(--t5);
  margin-top: 3px;
}

/* Loader */
.loader {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 28px;
  justify-content: center;
  color: var(--t4);
  font-size: 14px;
}
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--b2);
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

/* Alerts */
.alert {
  padding: 12px 16px;
  border-radius: var(--r-xs);
  font-size: 13.5px;
  margin-bottom: 12px;
}
.alert-error {
  background: rgba(239,68,68,0.08);
  border: 1px solid rgba(239,68,68,0.25);
  color: #FCA5A5;
}
.alert-success {
  background: rgba(16,185,129,0.08);
  border: 1px solid rgba(16,185,129,0.25);
  color: #6EE7B7;
}
.alert-info {
  background: rgba(59,130,246,0.08);
  border: 1px solid rgba(59,130,246,0.2);
  color: #93C5FD;
}
.alert-warning {
  background: rgba(245,158,11,0.08);
  border: 1px solid rgba(245,158,11,0.25);
  color: #FCD34D;
}

/* === HOW-TO SECTION === */
.how-section {
  padding: 56px 0;
  background: var(--bg2);
}
.section-title {
  font-size: 23px;
  font-weight: 800;
  letter-spacing: -0.4px;
  margin-bottom: 8px;
  color: var(--t1);
}
.section-sub {
  font-size: 15px;
  color: var(--t4);
  margin-bottom: 36px;
  line-height: 1.6;
}
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}
.step {
  background: var(--bg-card);
  border: 1px solid var(--b1);
  border-radius: var(--r);
  padding: 22px;
  transition: border-color var(--tr);
}
.step:hover { border-color: rgba(59,130,246,0.4); }
.step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(59,130,246,0.1);
  border: 1px solid rgba(59,130,246,0.2);
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}
.step h3 { font-size: 14.5px; font-weight: 700; margin-bottom: 7px; color: var(--t1); }
.step p { font-size: 13px; color: var(--t4); line-height: 1.6; }

/* === FEATURES SECTION === */
.features-section { padding: 56px 0; }
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}
.feature {
  background: var(--bg-card);
  border: 1px solid var(--b1);
  border-radius: var(--r);
  padding: 22px;
  transition: all var(--tr);
}
.feature:hover {
  border-color: var(--b2);
  transform: translateY(-2px);
}
.feature-icon { font-size: 26px; margin-bottom: 12px; }
.feature h3 { font-size: 14.5px; font-weight: 700; margin-bottom: 7px; color: var(--t1); }
.feature p { font-size: 13px; color: var(--t4); line-height: 1.6; }

/* === ARTICLE SECTION === */
.article-section {
  padding: 56px 0;
  background: var(--bg2);
}
.article { max-width: 800px; }
.article h2 {
  font-size: 21px;
  font-weight: 750;
  letter-spacing: -0.3px;
  margin: 32px 0 14px;
  color: var(--t1);
}
.article h2:first-child { margin-top: 0; }
.article h3 { font-size: 17px; font-weight: 650; margin: 22px 0 10px; color: var(--t1); }
.article p {
  color: var(--t3);
  line-height: 1.8;
  margin-bottom: 16px;
  font-size: 15px;
}
.article ul, .article ol {
  color: var(--t3);
  line-height: 1.8;
  margin: 12px 0 16px 20px;
  font-size: 15px;
}
.article li { margin-bottom: 6px; }
.article strong { color: var(--t1); font-weight: 650; }
.article code {
  background: var(--bg-card2);
  border: 1px solid var(--b2);
  padding: 2px 7px;
  border-radius: 5px;
  font-size: 13px;
  color: var(--blue);
  font-family: 'SF Mono', 'Fira Code', monospace;
}

/* === FAQ SECTION === */
.faq-section { padding: 56px 0; }
.faq-list { max-width: 800px; display: flex; flex-direction: column; gap: 8px; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--b1);
  border-radius: var(--r);
  overflow: hidden;
  transition: border-color var(--tr);
}
.faq-item.open { border-color: rgba(59,130,246,0.3); }
.faq-q {
  padding: 18px 22px;
  font-size: 15px;
  font-weight: 600;
  color: var(--t1);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  user-select: none;
  transition: color var(--tr);
}
.faq-q:hover { color: var(--blue); }
.faq-icon {
  font-size: 20px;
  font-weight: 300;
  color: var(--blue);
  flex-shrink: 0;
  transition: transform 0.25s ease;
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-a {
  display: none;
  padding: 0 22px 18px;
  color: var(--t4);
  font-size: 14px;
  line-height: 1.75;
}
.faq-item.open .faq-a { display: block; }

/* === RELATED TOOLS === */
.related-section {
  padding: 56px 0;
  background: var(--bg2);
}

/* === FOOTER === */
footer {
  background: var(--bg2);
  border-top: 1px solid var(--b1);
  padding: 52px 0 24px;
  margin-top: auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 44px;
}
.footer-brand p {
  font-size: 13px;
  color: var(--t5);
  line-height: 1.7;
  max-width: 240px;
  margin-top: 14px;
}
.footer-links-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--t4);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-bottom: 14px;
}
.footer-links a {
  display: block;
  font-size: 13px;
  color: var(--t5);
  padding: 4px 0;
  text-decoration: none;
  transition: color var(--tr);
}
.footer-links a:hover { color: var(--blue); }
.footer-bottom {
  border-top: 1px solid var(--b1);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.footer-bottom p {
  font-size: 12.5px;
  color: var(--t5);
}
.footer-bottom-links {
  display: flex;
  gap: 18px;
}
.footer-bottom-links a {
  font-size: 12px;
  color: var(--t5);
  text-decoration: none;
  transition: color var(--tr);
}
.footer-bottom-links a:hover { color: var(--blue); }

/* === ANIMATIONS === */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}
@keyframes shimmer {
  from { background-position: -200% center; }
  to   { background-position: 200% center; }
}

/* === SCROLL PROGRESS BAR === */
#progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--grad);
  z-index: 9999;
  transition: width 0.1s linear;
  border-radius: 0 3px 3px 0;
}

/* === COPY BUTTON === */
.copy-btn {
  background: none;
  border: none;
  color: var(--blue);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  padding: 3px 8px;
  border-radius: 5px;
  transition: all var(--tr);
  flex-shrink: 0;
  font-family: var(--font);
}
.copy-btn:hover { background: rgba(59,130,246,0.1); }
.copy-btn.copied { color: var(--green); }

/* Tabs */
.tabs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.tab-btn {
  padding: 7px 14px;
  border-radius: var(--r-xs);
  font-size: 13px;
  font-weight: 600;
  background: var(--bg-card2);
  border: 1px solid var(--b2);
  color: var(--t4);
  cursor: pointer;
  transition: all var(--tr);
}
.tab-btn:hover { border-color: var(--blue); color: var(--blue); }
.tab-btn.active {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
}

/* Progress / Strength bar */
.strength-bar {
  height: 4px;
  background: var(--b1);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 8px;
}
.strength-fill {
  height: 100%;
  border-radius: 2px;
  transition: width 0.3s ease, background 0.3s ease;
}

/* Range input */
input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 4px;
  background: var(--b2);
  border-radius: 2px;
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--blue);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 8px rgba(59,130,246,0.4);
}

/* Checkbox */
input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--blue);
  cursor: pointer;
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
}
@media (max-width: 768px) {
  .tool-hero-inner { flex-direction: column; gap: 14px; }
  .tool-hero h1 { font-size: 22px; }
  .hero { padding: 64px 0 52px; }
  .hero h1 { letter-spacing: -1.5px; }
  .hero-stats { gap: 28px; }
  .stat .num { font-size: 26px; }
  .container { padding: 0 16px; }
  .tool-grid { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
}
@media (max-width: 480px) {
  .tool-grid { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 20px; }
  .hero-desc { font-size: 15px; }
  .tool-box { padding: 16px; }
}

/* === UTILITY CLASSES === */
.hidden { display: none !important; }
.text-center { text-align: center; }
.text-blue { color: var(--blue); }
.text-green { color: var(--green); }
.text-red { color: var(--red); }
.text-amber { color: var(--amber); }
.text-muted { color: var(--t4); }
.fw-700 { font-weight: 700; }
.fw-800 { font-weight: 800; }
.mt-8 { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; }
.mb-12 { margin-bottom: 12px; }
.mb-16 { margin-bottom: 16px; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.w-full { width: 100%; }
.font-mono { font-family: 'SF Mono', 'Fira Code', Menlo, monospace; }

/* ── Tool Component Styles ── */
.stat-card{background:var(--bg-card2,#1A2235);border:1px solid var(--b2,#2D3F55);border-radius:12px;padding:18px;text-align:center}
.sc-label{font-size:11px;font-weight:700;color:var(--t5,#6B7280);text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px}
.sc-value{font-size:28px;font-weight:900;color:var(--t1,#F9FAFB);letter-spacing:-1px;line-height:1}
.sc-unit{font-size:12px;color:var(--t5,#6B7280);margin-top:4px}
.result-card{display:flex;align-items:center;justify-content:space-between;gap:10px;background:var(--bg-card2,#1A2235);border:1px solid var(--b2,#2D3F55);border-radius:8px;padding:10px 14px}
.result-value{font-size:15px;font-weight:600;color:var(--t1,#F9FAFB);word-break:break-all}
.copy-btn{background:rgba(59,130,246,.1);border:1px solid rgba(59,130,246,.3);color:#3B82F6;border-radius:6px;padding:5px 12px;font-size:12px;font-weight:600;cursor:pointer;flex-shrink:0;transition:all .15s;font-family:inherit}
.copy-btn:hover{background:#3B82F6;color:#fff}
.copy-btn.copied{background:#10B981;color:#fff;border-color:#10B981}
.tabs{display:flex;gap:4px;background:var(--bg-card2,#1A2235);border:1px solid var(--b2,#2D3F55);border-radius:8px;padding:4px}
.tab-btn{flex:1;padding:8px 10px;background:none;border:none;border-radius:6px;color:var(--t4,#6B7280);font-size:13px;font-weight:500;cursor:pointer;transition:all .15s;font-family:inherit}
.tab-btn.active{background:#3B82F6;color:#fff;font-weight:700}
.tab-btn:hover:not(.active){color:var(--t1,#F9FAFB);background:rgba(255,255,255,.05)}
.grid-2{display:grid;grid-template-columns:1fr 1fr}
@media(max-width:560px){.grid-2{grid-template-columns:1fr}}
.alert-info{background:rgba(59,130,246,.08);border:1px solid rgba(59,130,246,.25);color:#60A5FA}
.btn-grad{background:linear-gradient(135deg,#3B82F6,#8B5CF6);color:#fff;border:none;font-weight:700}
.btn-grad:hover{opacity:.9;transform:translateY(-1px)}
.btn-lg{padding:14px 24px;font-size:15px}
.btn-sm{padding:5px 10px;font-size:11px}
.tool-card-link{display:flex;flex-direction:column;gap:8px;background:var(--bg-card,#111827);border:1px solid var(--b1,#1E293B);border-radius:12px;padding:18px;text-decoration:none;color:inherit;transition:all .25s;position:relative;overflow:hidden}
.tool-card-link:hover{border-color:#3B82F6;transform:translateY(-3px);box-shadow:0 8px 24px rgba(59,130,246,.2);text-decoration:none}
.tc-icon{font-size:26px;position:relative;z-index:1}
.tool-card-link h3{font-size:14px;font-weight:700;color:var(--t1,#F9FAFB);position:relative;z-index:1;line-height:1.3}
.tool-card-link p{font-size:12px;color:var(--t5,#6B7280);flex:1;position:relative;z-index:1}
.tc-cta{font-size:12px;color:#3B82F6;font-weight:600;position:relative;z-index:1}
.cat-section{padding:40px 0 8px}
.cat-header{display:flex;align-items:center;gap:12px;margin-bottom:20px;padding-bottom:14px;border-bottom:1px solid var(--b1,#1E293B)}
.cat-icon{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.cat-header h2{font-size:18px;font-weight:800}
.cat-count{background:var(--bg-card2,#1A2235);border:1px solid var(--b2,#2D3F55);border-radius:999px;padding:2px 10px;font-size:12px;color:var(--t5,#6B7280)}
.hamburger.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
.faq-item.open .faq-q{color:#3B82F6}
.faq-item.open{border-color:#3B82F6}
.breadcrumb{background:var(--bg2,#0D1526);border-bottom:1px solid var(--b1,#1E293B);padding:10px 0}
.breadcrumb ol{display:flex;align-items:center;gap:6px;list-style:none;font-size:12.5px;color:var(--t5,#6B7280);flex-wrap:wrap}
.breadcrumb li+li::before{content:'/';color:var(--b2,#2D3F55);margin-right:6px}
.breadcrumb a{color:var(--t5,#6B7280)}
.breadcrumb a:hover{color:#3B82F6}
.breadcrumb li:last-child{color:var(--t4,#6B7280)}
.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:999px;font-size:11.5px;font-weight:600}
.badge-free{background:rgba(16,185,129,.1);border:1px solid rgba(16,185,129,.25);color:#10B981}
.badge-fast{background:rgba(59,130,246,.1);border:1px solid rgba(59,130,246,.25);color:#3B82F6}
.badge-safe{background:rgba(139,92,246,.1);border:1px solid rgba(139,92,246,.25);color:#8B5CF6}
#progress-bar{position:fixed;top:0;left:0;height:3px;background:linear-gradient(90deg,#3B82F6,#8B5CF6);z-index:9999;transition:width .1s linear;pointer-events:none}
#site-header.scrolled{box-shadow:0 4px 24px rgba(0,0,0,.4)}
.lang-wrap{position:relative}
.lang-btn{display:flex;align-items:center;gap:5px;padding:6px 10px;background:var(--bg-card2,#1A2235);border:1px solid var(--b2,#2D3F55);border-radius:6px;color:var(--t3,#9CA3AF);font-size:12px;font-weight:600;cursor:pointer;font-family:inherit;transition:all .15s}
.lang-btn:hover{border-color:#3B82F6;color:var(--t1,#F9FAFB)}
.lang-menu{display:none;position:absolute;top:calc(100% + 8px);right:0;background:var(--bg-card,#111827);border:1px solid var(--b2,#2D3F55);border-radius:12px;padding:6px;min-width:160px;z-index:100;box-shadow:0 8px 40px rgba(0,0,0,.6);flex-direction:column;gap:2px}
.lang-menu.open{display:flex}
.lang-menu a{padding:8px 12px;color:var(--t3,#9CA3AF);font-size:13px;border-radius:6px;cursor:pointer;text-decoration:none}
.lang-menu a:hover{background:var(--bg-card2,#1A2235);color:var(--t1,#F9FAFB)}
.ad-zone{display:flex;flex-direction:column;align-items:center;padding:8px 0}
.ad-label{font-size:10px;color:var(--t5,#6B7280);text-transform:uppercase;letter-spacing:1px;margin-bottom:4px}
textarea.input{resize:vertical;min-height:100px}
input[type=range].input{padding:0;border:none;background:transparent;height:auto;cursor:pointer;accent-color:#3B82F6}
input[type=color].input{padding:2px;cursor:pointer;border-radius:8px;height:44px}