/*
 * Image Tools Kit — Design System
 * Dark + futuristic + 3D + technical + premium + clean + fast
 */

/* ============================================================
   1. DESIGN TOKENS
   ============================================================ */
:root {
  /* Color system */
  --itk-bg: #05070b;
  --itk-bg-2: #070a10;
  --itk-bg-3: #0a0e16;
  --itk-surface: #0d1220;
  --itk-surface-2: #111827;
  --itk-surface-3: #16213a;
  --itk-surface-hover: #1a2542;
  --itk-border: #1f2a45;
  --itk-border-soft: rgba(120, 140, 190, 0.12);
  --itk-text: #eef1f8;
  --itk-text-muted: #93a0b8;
  --itk-text-faint: #5c6a84;
  --itk-accent: #4f8cff;
  --itk-accent-2: #7c6cff;
  --itk-accent-soft: rgba(79, 140, 255, 0.12);
  --itk-accent-glow: rgba(79, 140, 255, 0.35);
  --itk-success: #34d399;
  --itk-warning: #fbbf24;
  --itk-error: #f87171;
  --itk-info: #38bdf8;

  /* Typography */
  --itk-font-sans: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --itk-font-mono: "JetBrains Mono", "Cascadia Code", "SF Mono", Consolas, monospace;
  --itk-size-h1: clamp(2.4rem, 5vw, 4.2rem);
  --itk-size-h2: clamp(1.7rem, 3vw, 2.4rem);
  --itk-size-h3: clamp(1.25rem, 2vw, 1.5rem);
  --itk-size-body: 1rem;
  --itk-size-small: 0.875rem;
  --itk-size-tiny: 0.75rem;
  --itk-lh-tight: 1.15;
  --itk-lh-body: 1.65;

  /* Spacing */
  --itk-space-1: 0.25rem;
  --itk-space-2: 0.5rem;
  --itk-space-3: 0.75rem;
  --itk-space-4: 1rem;
  --itk-space-5: 1.5rem;
  --itk-space-6: 2rem;
  --itk-space-7: 3rem;
  --itk-space-8: 4rem;
  --itk-space-9: 6rem;

  /* Radius */
  --itk-radius-sm: 6px;
  --itk-radius: 10px;
  --itk-radius-lg: 16px;
  --itk-radius-xl: 22px;

  /* Shadows */
  --itk-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --itk-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
  --itk-shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
  --itk-shadow-glow: 0 0 24px var(--itk-accent-glow);
  --itk-shadow-card: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 8px 24px rgba(0, 0, 0, 0.4);

  /* Motion */
  --itk-ease: cubic-bezier(0.4, 0, 0.2, 1);
  --itk-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --itk-dur: 0.2s;
  --itk-dur-slow: 0.45s;

  /* Header */
  --itk-header-h: 70px;

  /* Layout */
  --itk-container: 1200px;
  --itk-container-wide: 1400px;
  --itk-gutter: clamp(1rem, 4vw, 2.5rem);
}

/* ============================================================
   2. RESET / BASE
   ============================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--itk-bg);
  color: var(--itk-text);
  font-family: var(--itk-font-sans);
  font-size: var(--itk-size-body);
  line-height: var(--itk-lh-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Layered ambient background */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(60rem 40rem at 80% -10%, rgba(79, 140, 255, 0.07), transparent 60%),
    radial-gradient(50rem 35rem at 10% 110%, rgba(124, 108, 255, 0.05), transparent 60%),
    var(--itk-bg);
  pointer-events: none;
}

/* Subtle technical grid overlay */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(150, 170, 220, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(150, 170, 220, 0.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 30%, transparent 75%);
  pointer-events: none;
}

img,
svg,
canvas {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--itk-accent);
  text-decoration: none;
  transition: color var(--itk-dur) var(--itk-ease);
}

a:hover {
  color: #8fbcff;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: var(--itk-lh-tight);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 var(--itk-space-4);
  color: var(--itk-text);
}

h1 { font-size: var(--itk-size-h1); }
h2 { font-size: var(--itk-size-h2); }
h3 { font-size: var(--itk-size-h3); }

p {
  margin: 0 0 var(--itk-space-5);
}

p:last-child { margin-bottom: 0; }

ul, ol {
  padding-left: 1.25rem;
  margin: 0 0 var(--itk-space-5);
}

:focus-visible {
  outline: 2px solid var(--itk-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

::selection {
  background: var(--itk-accent-soft);
  color: #fff;
}

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--itk-bg-2); }
::-webkit-scrollbar-thumb {
  background: var(--itk-surface-3);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover { background: #24304f; }

/* ============================================================
   3. LAYOUT HELPERS
   ============================================================ */
.itk-container {
  width: 100%;
  max-width: var(--itk-container);
  margin-inline: auto;
  padding-inline: var(--itk-gutter);
}

.itk-container-wide {
  width: 100%;
  max-width: var(--itk-container-wide);
  margin-inline: auto;
  padding-inline: var(--itk-gutter);
}

.itk-section {
  padding: var(--itk-space-8) 0;
}

.itk-section--tight { padding: var(--itk-space-6) 0; }
.itk-section--spacious { padding: var(--itk-space-9) 0; }

.itk-section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--itk-space-2);
  font-size: var(--itk-size-tiny);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--itk-accent);
  margin-bottom: var(--itk-space-3);
}

.itk-section-label::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--itk-accent);
  opacity: 0.6;
}

.itk-section-head {
  max-width: 720px;
  margin-bottom: var(--itk-space-7);
}

.itk-section-head p {
  color: var(--itk-text-muted);
  font-size: 1.05rem;
}

.itk-section-head--center {
  margin-inline: auto;
  text-align: center;
}

.itk-section-head--center .itk-section-label { justify-content: center; }
.itk-section-head--center .itk-section-label::before { display: none; }

/* Grids */
.itk-grid {
  display: grid;
  gap: var(--itk-space-5);
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.itk-grid--3 {
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.itk-grid--4 {
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

.itk-flex { display: flex; }
.itk-flex--between { display: flex; align-items: center; justify-content: space-between; gap: var(--itk-space-4); }
.itk-flex--wrap { flex-wrap: wrap; }

/* ============================================================
   4. TYPOGRAPHY HELPERS
   ============================================================ */
.itk-muted { color: var(--itk-text-muted); }
.itk-faint { color: var(--itk-text-faint); }
.itk-mono { font-family: var(--itk-font-mono); font-size: 0.9em; }
.itk-gradient-text {
  background: linear-gradient(120deg, #fff 20%, var(--itk-accent) 60%, var(--itk-accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ============================================================
   5. BUTTONS
   ============================================================ */
.itk-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--itk-space-2);
  padding: 0.7rem 1.5rem;
  border-radius: var(--itk-radius);
  font-family: var(--itk-font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.2;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--itk-dur) var(--itk-ease),
    box-shadow var(--itk-dur) var(--itk-ease),
    background var(--itk-dur) var(--itk-ease),
    color var(--itk-dur) var(--itk-ease),
    border-color var(--itk-dur) var(--itk-ease);
  text-decoration: none;
  white-space: nowrap;
  position: relative;
}

.itk-btn:focus-visible {
  outline: 2px solid var(--itk-accent);
  outline-offset: 2px;
}

.itk-btn--primary {
  background: linear-gradient(135deg, var(--itk-accent), #3f6ee0);
  color: #fff;
  box-shadow: 0 2px 12px var(--itk-accent-glow), 0 1px 0 rgba(255, 255, 255, 0.15) inset;
}

.itk-btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px var(--itk-accent-glow), 0 1px 0 rgba(255, 255, 255, 0.2) inset;
  color: #fff;
}

.itk-btn--secondary {
  background: transparent;
  border-color: var(--itk-border);
  color: var(--itk-text);
}

.itk-btn--secondary:hover {
  border-color: var(--itk-accent);
  color: var(--itk-text);
  transform: translateY(-1px);
}

.itk-btn--ghost {
  background: rgba(255, 255, 255, 0.03);
  border-color: transparent;
  color: var(--itk-text-muted);
}

.itk-btn--ghost:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--itk-text);
}

.itk-btn--success {
  background: var(--itk-success);
  color: #04241a;
}

.itk-btn--lg { padding: 0.9rem 2rem; font-size: 1rem; }
.itk-btn--sm { padding: 0.45rem 0.9rem; font-size: 0.85rem; }

.itk-btn:disabled,
.itk-btn[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* ============================================================
   6. HEADER
   ============================================================ */
.itk-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--itk-header-h);
  background: rgba(5, 7, 11, 0.78);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid var(--itk-border-soft);
  transition: background var(--itk-dur) var(--itk-ease);
}

.itk-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--itk-space-4);
  height: 100%;
}

.itk-header__brand {
  display: flex;
  align-items: center;
  gap: var(--itk-space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.itk-header__logo {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background:
    linear-gradient(135deg, var(--itk-accent) 0%, var(--itk-accent-2) 100%);
  position: relative;
  box-shadow: 0 2px 12px var(--itk-accent-glow), 0 1px 0 rgba(255, 255, 255, 0.2) inset;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.itk-header__logo svg {
  width: 20px;
  height: 20px;
  color: #fff;
}

.itk-header__brand-name {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.01em;
  color: var(--itk-text);
  line-height: 1.1;
}

.itk-header__brand-tag {
  display: block;
  font-size: 0.62rem;
  font-weight: 500;
  color: var(--itk-text-faint);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.itk-nav {
  display: flex;
  align-items: center;
  gap: var(--itk-space-1);
  height: 100%;
}

.itk-nav__has-children { position: relative; }

.itk-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.5rem 0.85rem;
  border-radius: 8px;
  color: var(--itk-text-muted);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--itk-dur) var(--itk-ease), background var(--itk-dur) var(--itk-ease);
}

.itk-nav__link:hover {
  color: var(--itk-text);
  background: rgba(255, 255, 255, 0.04);
}

.itk-nav__link[aria-expanded="true"] {
  color: var(--itk-text);
}

.itk-nav__chevron {
  width: 12px;
  height: 12px;
  transition: transform var(--itk-dur) var(--itk-ease);
}

.itk-nav__item:hover > .itk-nav__chevron,
.itk-nav__has-children:hover > .itk-nav__link .itk-nav__chevron {
  transform: rotate(180deg);
}

/* Dropdown */
.itk-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 260px;
  background: var(--itk-surface);
  border: 1px solid var(--itk-border);
  border-radius: var(--itk-radius-lg);
  padding: var(--itk-space-2);
  box-shadow: var(--itk-shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity var(--itk-dur) var(--itk-ease),
    transform var(--itk-dur) var(--itk-ease),
    visibility var(--itk-dur) var(--itk-ease);
  z-index: 100;
}

.itk-nav__has-children:hover > .itk-dropdown,
.itk-nav__has-children:focus-within > .itk-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.itk-dropdown__link {
  display: block;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  color: var(--itk-text-muted);
  font-size: 0.9rem;
  text-decoration: none;
  transition: background var(--itk-dur), color var(--itk-dur);
}

.itk-dropdown__link:hover {
  background: var(--itk-surface-hover);
  color: var(--itk-text);
}

.itk-dropdown__label {
  display: block;
  padding: 0.6rem 0.75rem 0.35rem;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--itk-text-faint);
}

/* Mega menu */
.itk-mega {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  width: 720px;
  max-width: 90vw;
  background: var(--itk-surface);
  border: 1px solid var(--itk-border);
  border-radius: var(--itk-radius-lg);
  box-shadow: var(--itk-shadow-lg);
  padding: var(--itk-space-5);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--itk-space-1);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--itk-dur) var(--itk-ease),
    transform var(--itk-dur) var(--itk-ease),
    visibility var(--itk-dur) var(--itk-ease);
  z-index: 100;
}

.itk-nav__has-children:hover > .itk-mega,
.itk-nav__has-children:focus-within > .itk-mega {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.itk-mega__link {
  display: block;
  padding: 0.55rem 0.75rem;
  border-radius: 8px;
  color: var(--itk-text-muted);
  font-size: 0.9rem;
  text-decoration: none;
  transition: background var(--itk-dur), color var(--itk-dur);
}

.itk-mega__link:hover {
  background: var(--itk-surface-hover);
  color: var(--itk-text);
}

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

/* Header search */
.itk-header-search {
  position: relative;
}

.itk-header-search__input {
  width: 200px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--itk-border-soft);
  border-radius: var(--itk-radius);
  padding: 0.5rem 2.3rem 0.5rem 0.9rem;
  color: var(--itk-text);
  font-family: var(--itk-font-sans);
  font-size: 0.9rem;
  transition: width var(--itk-dur) var(--itk-ease), border-color var(--itk-dur);
}

.itk-header-search__input::placeholder { color: var(--itk-text-faint); }
.itk-header-search__input:focus {
  outline: none;
  border-color: var(--itk-accent);
  width: 240px;
}

.itk-header-search__icon {
  position: absolute;
  right: 0.7rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--itk-text-faint);
  pointer-events: none;
}

/* Hamburger */
.itk-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--itk-border);
  border-radius: var(--itk-radius);
  cursor: pointer;
}

.itk-burger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--itk-text);
  border-radius: 2px;
  transition: transform var(--itk-dur) var(--itk-ease), opacity var(--itk-dur);
}

.itk-burger--open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.itk-burger--open span:nth-child(2) { opacity: 0; }
.itk-burger--open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav panel */
.itk-mobile-nav {
  position: fixed;
  inset: var(--itk-header-h) 0 auto 0;
  background: var(--itk-bg-2);
  border-bottom: 1px solid var(--itk-border);
  padding: var(--itk-space-5) var(--itk-gutter) var(--itk-space-6);
  z-index: 999;
  max-height: calc(100vh - var(--itk-header-h));
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--itk-dur), transform var(--itk-dur), visibility var(--itk-dur);
}

.itk-mobile-nav--open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.itk-mobile-nav__link {
  display: block;
  padding: 0.8rem 0;
  color: var(--itk-text);
  font-size: 1.05rem;
  font-weight: 500;
  border-bottom: 1px solid var(--itk-border-soft);
  text-decoration: none;
}

.itk-mobile-nav__link:hover { color: var(--itk-accent); }

.itk-mobile-nav__sub {
  padding: var(--itk-space-2) 0 var(--itk-space-2) var(--itk-space-4);
  border-bottom: 1px solid var(--itk-border-soft);
}

.itk-mobile-nav__sub-link {
  display: block;
  padding: 0.45rem 0;
  color: var(--itk-text-muted);
  font-size: 0.95rem;
  text-decoration: none;
}

.itk-mobile-nav__sub-link:hover { color: var(--itk-text); }

/* ============================================================
   7. FOOTER
   ============================================================ */
.itk-footer {
  position: relative;
  border-top: 1px solid var(--itk-border-soft);
  background: linear-gradient(180deg, var(--itk-bg-2), var(--itk-bg));
  padding-top: var(--itk-space-8);
  overflow: hidden;
}

/* Ambient glow orb in footer */
.itk-footer::before {
  content: "";
  position: absolute;
  bottom: -220px;
  left: 50%;
  transform: translateX(-50%);
  width: 720px;
  height: 420px;
  background: radial-gradient(circle, rgba(79, 140, 255, 0.12), transparent 65%);
  pointer-events: none;
  animation: itk-orb-float 14s var(--itk-ease-out) infinite;
}

@keyframes itk-orb-float {
  0%, 100% { opacity: 0.7; transform: translateX(-50%) translateY(0); }
  50% { opacity: 1; transform: translateX(-50%) translateY(-18px); }
}

.itk-footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: var(--itk-space-7);
  padding-bottom: var(--itk-space-7);
}

.itk-footer__brand p {
  color: var(--itk-text-muted);
  font-size: 0.9rem;
  max-width: 300px;
}

.itk-footer__col h3 {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--itk-text-faint);
  margin-bottom: var(--itk-space-4);
}

.itk-footer__col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--itk-space-2);
}

.itk-footer__col a {
  color: var(--itk-text-muted);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color var(--itk-dur);
}

.itk-footer__col a:hover { color: var(--itk-text); }

.itk-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--itk-space-4);
  padding: var(--itk-space-5) 0;
  border-top: 1px solid var(--itk-border-soft);
  font-size: 0.8rem;
  color: var(--itk-text-faint);
  position: relative;
}

.itk-footer__bottom nav { display: flex; gap: var(--itk-space-4); }
.itk-footer__bottom a { color: var(--itk-text-faint); text-decoration: none; }
.itk-footer__bottom a:hover { color: var(--itk-text); }

/* ============================================================
   8. HERO (3D)
   ============================================================ */
.itk-hero {
  position: relative;
  padding: clamp(3.5rem, 8vw, 6.5rem) 0 clamp(4rem, 8vw, 6rem);
  overflow: hidden;
}

.itk-hero__inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: var(--itk-space-7);
  align-items: center;
  position: relative;
  z-index: 2;
}

.itk-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--itk-space-2);
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  background: var(--itk-accent-soft);
  border: 1px solid rgba(79, 140, 255, 0.25);
  color: #a9c8ff;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-bottom: var(--itk-space-5);
}

.itk-hero__badge .itk-live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--itk-success);
  box-shadow: 0 0 8px var(--itk-success);
  animation: itk-pulse 2s infinite;
}

@keyframes itk-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.6; }
}

.itk-hero h1 {
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  margin-bottom: var(--itk-space-5);
}

.itk-hero__sub {
  color: var(--itk-text-muted);
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  margin-bottom: var(--itk-space-6);
  max-width: 560px;
}

.itk-hero__cta {
  display: flex;
  gap: var(--itk-space-4);
  flex-wrap: wrap;
  margin-bottom: var(--itk-space-6);
}

.itk-hero__stats {
  display: flex;
  gap: var(--itk-space-6);
  flex-wrap: wrap;
  padding-top: var(--itk-space-5);
  border-top: 1px solid var(--itk-border-soft);
}

.itk-hero__stat strong {
  display: block;
  font-size: 1.3rem;
  color: var(--itk-text);
}

.itk-hero__stat span {
  font-size: 0.8rem;
  color: var(--itk-text-faint);
}

/* ============================================================
   9. 3D SCENE COMPOSITION
   ============================================================ */
.itk-scene {
  position: relative;
  height: clamp(380px, 46vw, 520px);
  perspective: 1200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.itk-scene__layer {
  position: absolute;
  border-radius: var(--itk-radius-lg);
  background: linear-gradient(145deg, var(--itk-surface-2), var(--itk-surface));
  border: 1px solid var(--itk-border);
  box-shadow: var(--itk-shadow-lg), 0 1px 0 rgba(255, 255, 255, 0.05) inset;
  padding: var(--itk-space-4);
  transform-style: preserve-3d;
  transition: transform var(--itk-dur-slow) var(--itk-ease-out);
  user-select: none;
}

/* Floating image card */
.itk-scene__image-card {
  width: 250px;
  z-index: 3;
  transform: rotateY(-8deg) rotateX(4deg) translateZ(40px);
  animation: itk-float 7s var(--itk-ease-out) infinite;
}

.itk-scene__image-card .itk-scene__thumb {
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: var(--itk-radius);
  background:
    linear-gradient(135deg, rgba(79, 140, 255, 0.25), rgba(124, 108, 255, 0.2)),
    repeating-linear-gradient(45deg, rgba(255,255,255,0.04) 0 8px, transparent 8px 16px);
  margin-bottom: var(--itk-space-3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid rgba(255,255,255,0.06);
}

.itk-scene__meta-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--itk-text-faint);
  font-family: var(--itk-font-mono);
}

/* Metadata tag chips */
.itk-scene__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: var(--itk-space-3);
}

.itk-scene__tag {
  font-size: 0.62rem;
  font-family: var(--itk-font-mono);
  padding: 3px 7px;
  border-radius: 5px;
  background: rgba(79, 140, 255, 0.1);
  border: 1px solid rgba(79, 140, 255, 0.2);
  color: #9dbdf8;
}

.itk-scene__tag--warn {
  background: rgba(251, 191, 36, 0.1);
  border-color: rgba(251, 191, 36, 0.25);
  color: #f6cf7e;
}

/* Compression stats card */
.itk-scene__compress-card {
  width: 200px;
  right: 4%;
  top: 6%;
  z-index: 4;
  transform: rotateY(10deg) rotateX(-2deg) translateZ(60px);
  animation: itk-float 8s var(--itk-ease-out) 0.6s infinite reverse;
}

.itk-scene__compress-bars {
  display: grid;
  gap: 8px;
}

.itk-scene__bar {
  display: grid;
  grid-template-columns: 1fr 44px;
  align-items: center;
  gap: 8px;
}

.itk-scene__bar-track {
  height: 6px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
}

.itk-scene__bar-fill {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--itk-accent), var(--itk-accent-2));
  box-shadow: 0 0 8px var(--itk-accent-glow);
  animation: itk-grow 3s var(--itk-ease-out) infinite;
}

.itk-scene__bar-fill--big { width: 96%; animation-delay: 0.2s; }
.itk-scene__bar-fill--mid { width: 72%; animation-delay: 0.5s; }
.itk-scene__bar-fill--small { width: 48%; animation-delay: 0.8s; }

@keyframes itk-grow {
  0% { width: 0; }
  40% { width: 100%; }
  70% { width: 90%; }
  100% { width: 0; }
}

.itk-scene__bar-label {
  font-size: 0.62rem;
  font-family: var(--itk-font-mono);
  color: var(--itk-text-faint);
  text-align: right;
}

/* Privacy shield card */
.itk-scene__privacy-card {
  width: 180px;
  left: 0%;
  bottom: 4%;
  z-index: 4;
  transform: rotateY(14deg) rotateZ(-3deg) translateZ(30px);
  animation: itk-float 9s var(--itk-ease-out) 1.2s infinite;
  text-align: center;
}

.itk-scene__shield {
  width: 52px;
  height: 52px;
  margin: 0 auto var(--itk-space-2);
  border-radius: 14px;
  background: rgba(52, 211, 153, 0.12);
  border: 1px solid rgba(52, 211, 153, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--itk-success);
  box-shadow: 0 0 16px rgba(52, 211, 153, 0.15);
}

.itk-scene__privacy-card strong {
  display: block;
  font-size: 0.8rem;
  margin-bottom: 2px;
}

.itk-scene__privacy-card span {
  font-size: 0.68rem;
  color: var(--itk-text-faint);
}

/* Conversion arrows */
.itk-scene__convert-card {
  width: 210px;
  right: 2%;
  bottom: 2%;
  z-index: 2;
  transform: rotateY(-12deg) rotateZ(2deg) translateZ(20px);
  animation: itk-float 7.5s var(--itk-ease-out) 0.3s infinite reverse;
}

.itk-scene__convert-row {
  display: flex;
  align-items: center;
  gap: var(--itk-space-2);
  font-family: var(--itk-font-mono);
  font-size: 0.72rem;
  color: var(--itk-text-muted);
}

.itk-scene__convert-badge {
  padding: 3px 8px;
  border-radius: 5px;
  background: var(--itk-accent-soft);
  border: 1px solid rgba(79, 140, 255, 0.25);
  color: #a9c8ff;
  font-weight: 600;
}

.itk-scene__convert-badge--out {
  background: rgba(124, 108, 255, 0.12);
  border-color: rgba(124, 108, 255, 0.3);
  color: #c6bfff;
}

.itk-scene__arrow {
  color: var(--itk-accent);
  display: inline-flex;
}

/* Intro dot grid behind scene */
.itk-scene__grid {
  position: absolute;
  inset: -10%;
  background-image:
    radial-gradient(rgba(79,140,255,0.18) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: radial-gradient(circle, #000 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(circle, #000 20%, transparent 70%);
  z-index: 0;
  animation: itk-grid-drift 28s linear infinite;
}

@keyframes itk-grid-drift {
  0% { transform: translateY(0); }
  100% { transform: translateY(22px); }
}

.itk-scene__halo {
  position: absolute;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79, 140, 255, 0.16), transparent 65%);
  filter: blur(20px);
  animation: itk-halo-pulse 8s var(--itk-ease-out) infinite;
  z-index: 0;
}

@keyframes itk-halo-pulse {
  0%, 100% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.15); opacity: 1; }
}

@keyframes itk-float {
  0%, 100% { translate: 0 0; }
  50% { translate: 0 -16px; }
}

/* ============================================================
   10. TOOL SEARCH
   ============================================================ */
.itk-search-hero {
  position: relative;
  max-width: 640px;
  margin: 0 auto;
}

.itk-search-hero__label {
  text-align: center;
  font-size: var(--itk-size-tiny);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--itk-text-faint);
  margin-bottom: var(--itk-space-3);
}

.itk-tool-search {
  position: relative;
}

.itk-tool-search__input {
  width: 100%;
  background: var(--itk-surface);
  border: 1px solid var(--itk-border);
  border-radius: var(--itk-radius-lg);
  padding: 1rem 3.2rem 1rem 1.3rem;
  font-size: 1rem;
  font-family: var(--itk-font-sans);
  color: var(--itk-text);
  box-shadow: var(--itk-shadow);
  transition: border-color var(--itk-dur), box-shadow var(--itk-dur);
}

.itk-tool-search__input::placeholder { color: var(--itk-text-faint); }

.itk-tool-search__input:focus {
  outline: none;
  border-color: var(--itk-accent);
  box-shadow: var(--itk-shadow), 0 0 0 3px var(--itk-accent-soft);
}

.itk-tool-search__icon {
  position: absolute;
  right: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--itk-text-faint);
  pointer-events: none;
}

.itk-tool-search__results {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--itk-surface);
  border: 1px solid var(--itk-border);
  border-radius: var(--itk-radius-lg);
  box-shadow: var(--itk-shadow-lg);
  max-height: 420px;
  overflow-y: auto;
  z-index: 500;
  padding: var(--itk-space-2);
}

.itk-tool-search__result {
  display: flex;
  align-items: center;
  gap: var(--itk-space-3);
  padding: 0.6rem 0.7rem;
  border-radius: 8px;
  text-decoration: none;
  transition: background var(--itk-dur);
}

.itk-tool-search__result:hover { background: var(--itk-surface-hover); }

.itk-tool-search__result-icon {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--itk-accent-soft);
  color: var(--itk-accent);
}

.itk-tool-search__result-name {
  flex: 1;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--itk-text);
}

.itk-tool-search__result-meta {
  font-size: 0.7rem;
  color: var(--itk-text-faint);
}

.itk-tool-search__hint {
  text-align: center;
  font-size: var(--itk-size-small);
  color: var(--itk-text-faint);
  margin-top: var(--itk-space-3);
}

.itk-tool-search__hint strong { color: var(--itk-text-muted); font-weight: 500; }

/* ============================================================
   11. CARDS
   ============================================================ */
.itk-card {
  position: relative;
  background: linear-gradient(160deg, var(--itk-surface), var(--itk-bg-3));
  border: 1px solid var(--itk-border-soft);
  border-radius: var(--itk-radius-lg);
  padding: var(--itk-space-5);
  transition: transform var(--itk-dur) var(--itk-ease),
    border-color var(--itk-dur) var(--itk-ease),
    box-shadow var(--itk-dur) var(--itk-ease),
    background var(--itk-dur) var(--itk-ease);
  text-decoration: none;
  display: block;
  overflow: hidden;
}

.itk-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.05), transparent 40%);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--itk-dur);
}

.itk-card:hover {
  transform: translateY(-3px);
  border-color: rgba(79, 140, 255, 0.35);
  box-shadow: var(--itk-shadow-lg), 0 0 24px rgba(79, 140, 255, 0.08);
}

.itk-card:hover::after { opacity: 1; }

.itk-card__icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--itk-accent-soft);
  border: 1px solid rgba(79, 140, 255, 0.2);
  color: var(--itk-accent);
  margin-bottom: var(--itk-space-4);
}

.itk-card h3 {
  font-size: 1.05rem;
  margin-bottom: var(--itk-space-2);
  color: var(--itk-text);
}

.itk-card p {
  font-size: 0.9rem;
  color: var(--itk-text-muted);
  margin-bottom: var(--itk-space-4);
}

.itk-card__meta {
  display: flex;
  align-items: center;
  gap: var(--itk-space-2);
  font-size: 0.72rem;
  color: var(--itk-text-faint);
  font-family: var(--itk-font-mono);
}

.itk-card__arrow {
  position: absolute;
  top: var(--itk-space-5);
  right: var(--itk-space-5);
  width: 26px;
  height: 26px;
  color: var(--itk-text-faint);
  transition: color var(--itk-dur), transform var(--itk-dur);
}

.itk-card:hover .itk-card__arrow {
  color: var(--itk-accent);
  transform: translateX(3px);
}

/* Tool card */
.itk-tool-card {
  display: flex;
  flex-direction: column;
}

.itk-tool-card .itk-card__icon {
  background: var(--itk-surface-hover);
  border-color: var(--itk-border);
  color: var(--itk-text-muted);
}

.itk-tool-card:hover .itk-card__icon {
  background: var(--itk-accent-soft);
  border-color: rgba(79, 140, 255, 0.3);
  color: var(--itk-accent);
}

.itk-tool-card__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: auto;
  padding-top: var(--itk-space-3);
}

.itk-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.64rem;
  font-weight: 500;
  font-family: var(--itk-font-mono);
  padding: 2px 7px;
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--itk-border-soft);
  color: var(--itk-text-muted);
}

.itk-badge--privacy {
  background: rgba(52, 211, 153, 0.08);
  border-color: rgba(52, 211, 153, 0.2);
  color: #7fe3bb;
}

.itk-badge--beta {
  background: rgba(56, 189, 248, 0.08);
  border-color: rgba(56, 189, 248, 0.25);
  color: #6ccbf6;
}

/* Category card */
.itk-category-card {
  display: flex;
  align-items: center;
  gap: var(--itk-space-4);
}

.itk-category-card__icon {
  width: 50px;
  height: 50px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: var(--itk-accent-soft);
  border: 1px solid rgba(79, 140, 255, 0.2);
  color: var(--itk-accent);
}

.itk-category-card h3 {
  margin-bottom: 2px;
  font-size: 1rem;
}

.itk-category-card p {
  margin-bottom: 0;
  font-size: 0.82rem;
  color: var(--itk-text-faint);
}

.itk-category-card .itk-card__count {
  margin-left: auto;
  font-size: 0.72rem;
  font-family: var(--itk-font-mono);
  color: var(--itk-text-faint);
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--itk-border-soft);
}

/* ============================================================
   12. FEATURE / PRIVACY SECTION
   ============================================================ */
.itk-feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--itk-space-7);
  align-items: center;
}

.itk-feature-row--reverse .itk-feature-row__media { order: -1; }

.itk-feature-row__media {
  position: relative;
}

.itk-feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--itk-space-4);
}

.itk-feature-list li {
  display: flex;
  gap: var(--itk-space-3);
  align-items: flex-start;
}

.itk-feature-list__icon {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--itk-accent-soft);
  color: var(--itk-accent);
  margin-top: 2px;
}

.itk-feature-list strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.itk-feature-list p {
  font-size: 0.85rem;
  color: var(--itk-text-muted);
  margin: 0;
}

/* ============================================================
   13. TOOL PANEL / UPLOAD AREA
   ============================================================ */
.itk-tool-panel {
  position: relative;
  background: linear-gradient(170deg, var(--itk-surface), var(--itk-bg-3));
  border: 1px solid var(--itk-border);
  border-radius: var(--itk-radius-xl);
  padding: var(--itk-space-6);
  box-shadow: var(--itk-shadow-lg), 0 1px 0 rgba(255, 255, 255, 0.04) inset;
  z-index: 1;
}

.itk-upload-zone {
  border: 2px dashed var(--itk-border);
  border-radius: var(--itk-radius-lg);
  padding: var(--itk-space-7) var(--itk-space-5);
  text-align: center;
  cursor: pointer;
  transition: border-color var(--itk-dur), background var(--itk-dur), transform var(--itk-dur);
  background: rgba(255, 255, 255, 0.015);
  position: relative;
}

.itk-upload-zone:hover,
.itk-upload-zone--drag {
  border-color: var(--itk-accent);
  background: var(--itk-accent-soft);
}

.itk-upload-zone--drag { transform: scale(1.01); }

.itk-upload-zone__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--itk-space-4);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--itk-accent-soft);
  border: 1px solid rgba(79, 140, 255, 0.25);
  color: var(--itk-accent);
}

.itk-upload-zone strong {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.itk-upload-zone p {
  font-size: 0.85rem;
  color: var(--itk-text-faint);
  margin: 0 0 var(--itk-space-4);
}

.itk-upload-zone__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.itk-drop-note {
  font-size: 0.72rem;
  color: var(--itk-text-faint);
  margin-top: var(--itk-space-3);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.itk-upload-limits {
  display: flex;
  justify-content: center;
  gap: var(--itk-space-4);
  flex-wrap: wrap;
  margin-top: var(--itk-space-4);
  font-size: 0.72rem;
  color: var(--itk-text-faint);
  font-family: var(--itk-font-mono);
}

/* Tool file info */
.itk-file-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--itk-space-3);
  margin-top: var(--itk-space-5);
}

.itk-file-info__item {
  background: var(--itk-bg-2);
  border: 1px solid var(--itk-border-soft);
  border-radius: var(--itk-radius);
  padding: var(--itk-space-3);
  text-align: center;
}

.itk-file-info__item span {
  display: block;
  font-size: 0.68rem;
  color: var(--itk-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.itk-file-info__item strong {
  font-family: var(--itk-font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  word-break: break-all;
}

/* Tool result */
.itk-result {
  margin-top: var(--itk-space-5);
  animation: itk-result-in var(--itk-dur-slow) var(--itk-ease-out);
}

@keyframes itk-result-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.itk-result__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--itk-space-3);
  margin-bottom: var(--itk-space-5);
}

.itk-result__cell {
  background: var(--itk-bg-2);
  border: 1px solid var(--itk-border-soft);
  border-radius: var(--itk-radius);
  padding: var(--itk-space-4);
  text-align: center;
}

.itk-result__cell span {
  display: block;
  font-size: 0.7rem;
  color: var(--itk-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.itk-result__cell strong {
  font-size: 1.15rem;
  font-family: var(--itk-font-mono);
}

.itk-result__cell--accent strong { color: var(--itk-accent); }
.itk-result__cell--success strong { color: var(--itk-success); }

.itk-result__actions {
  display: flex;
  gap: var(--itk-space-3);
  flex-wrap: wrap;
}

.itk-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--itk-space-4);
  margin-top: var(--itk-space-5);
}

.itk-compare__panel {
  background: var(--itk-bg-2);
  border: 1px solid var(--itk-border-soft);
  border-radius: var(--itk-radius);
  padding: var(--itk-space-3);
}

.itk-compare__panel h4 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--itk-text-faint);
  margin-bottom: var(--itk-space-3);
}

/* Processing status */
.itk-status {
  display: flex;
  align-items: center;
  gap: var(--itk-space-3);
  padding: var(--itk-space-4);
  border-radius: var(--itk-radius);
  background: var(--itk-bg-2);
  border: 1px solid var(--itk-border-soft);
  margin-top: var(--itk-space-4);
  font-size: 0.9rem;
}

.itk-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--itk-border);
  border-top-color: var(--itk-accent);
  border-radius: 50%;
  animation: itk-spin 0.8s linear infinite;
  flex-shrink: 0;
}

@keyframes itk-spin { to { transform: rotate(360deg); } }

.itk-status--success { border-color: rgba(52, 211, 153, 0.3); color: var(--itk-success); }
.itk-status--error { border-color: rgba(248, 113, 113, 0.3); color: var(--itk-error); }

/* Alerts */
.itk-alert {
  display: flex;
  gap: var(--itk-space-3);
  align-items: flex-start;
  padding: var(--itk-space-4);
  border-radius: var(--itk-radius);
  font-size: 0.9rem;
  margin-top: var(--itk-space-4);
}

.itk-alert__icon { flex-shrink: 0; margin-top: 1px; }

.itk-alert--warning {
  background: rgba(251, 191, 36, 0.07);
  border: 1px solid rgba(251, 191, 36, 0.25);
  color: #f6d489;
}

.itk-alert--error {
  background: rgba(248, 113, 113, 0.07);
  border: 1px solid rgba(248, 113, 113, 0.25);
  color: #f6a9a9;
}

.itk-alert--success {
  background: rgba(52, 211, 153, 0.07);
  border: 1px solid rgba(52, 211, 153, 0.25);
  color: #9fe8cd;
}

.itk-alert--info {
  background: rgba(56, 189, 248, 0.07);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: #9ad9f5;
}

/* ============================================================
   14. FAQ
   ============================================================ */
.itk-faq {
  border: 1px solid var(--itk-border-soft);
  border-radius: var(--itk-radius);
  margin-bottom: var(--itk-space-3);
  overflow: hidden;
  background: var(--itk-surface);
}

.itk-faq__q {
  width: 100%;
  background: transparent;
  border: none;
  color: var(--itk-text);
  font-family: var(--itk-font-sans);
  font-size: 0.98rem;
  font-weight: 600;
  text-align: left;
  padding: var(--itk-space-4) var(--itk-space-5);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--itk-space-4);
}

.itk-faq__q:hover { background: rgba(255, 255, 255, 0.02); }

.itk-faq__q svg {
  flex-shrink: 0;
  color: var(--itk-text-faint);
  transition: transform var(--itk-dur) var(--itk-ease);
}

.itk-faq__item--open .itk-faq__q svg { transform: rotate(180deg); color: var(--itk-accent); }

.itk-faq__a {
  padding: 0 var(--itk-space-5);
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--itk-dur-slow) var(--itk-ease);
}

.itk-faq__item--open .itk-faq__a {
  max-height: 600px;
  padding-bottom: var(--itk-space-4);
}

.itk-faq__a p {
  color: var(--itk-text-muted);
  font-size: 0.92rem;
  margin: 0;
}

/* ============================================================
   15. BREADCRUMBS
   ============================================================ */
.itk-breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--itk-space-2);
  font-size: 0.78rem;
  color: var(--itk-text-faint);
  padding: var(--itk-space-4) 0;
}

.itk-breadcrumbs a { color: var(--itk-text-muted); text-decoration: none; }
.itk-breadcrumbs a:hover { color: var(--itk-text); }
.itk-breadcrumbs__sep { color: var(--itk-text-faint); opacity: 0.6; }
.itk-breadcrumbs [aria-current="page"] { color: var(--itk-text); }

/* ============================================================
   16. PAGE HEADER / HERO BAND
   ============================================================ */
.itk-page-hero {
  padding: clamp(2rem, 5vw, 3.5rem) 0;
  border-bottom: 1px solid var(--itk-border-soft);
  position: relative;
  overflow: hidden;
}

.itk-page-hero::after {
  content: "";
  position: absolute;
  right: -100px;
  top: -100px;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(79, 140, 255, 0.1), transparent 65%);
  pointer-events: none;
}

.itk-page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--itk-space-3);
}

.itk-page-hero p {
  color: var(--itk-text-muted);
  max-width: 640px;
  font-size: 1.05rem;
}

/* ============================================================
   17. CONTENT / ARTICLE
   ============================================================ */
.itk-content {
  max-width: 820px;
}

.itk-content h2 { margin-top: var(--itk-space-7); }
.itk-content h3 { margin-top: var(--itk-space-6); }
.itk-content li { margin-bottom: var(--itk-space-2); }

.itk-content--sidebar {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--itk-space-8);
}

.itk-sidebar { position: sticky; top: calc(var(--itk-header-h) + 24px); align-self: start; }

.itk-sidebar__box {
  background: var(--itk-surface);
  border: 1px solid var(--itk-border-soft);
  border-radius: var(--itk-radius-lg);
  padding: var(--itk-space-5);
  margin-bottom: var(--itk-space-5);
}

.itk-sidebar__box h3 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--itk-text-faint);
  margin-bottom: var(--itk-space-4);
}

.itk-sidebar__box ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--itk-space-2);
}

.itk-sidebar__box li a {
  color: var(--itk-text-muted);
  font-size: 0.9rem;
  text-decoration: none;
}

.itk-sidebar__box li a:hover { color: var(--itk-text); }

/* ============================================================
   18. 404
   ============================================================ */
.itk-404 {
  text-align: center;
  padding: clamp(3rem, 8vw, 7rem) 0;
}

.itk-404__code {
  font-size: clamp(5rem, 16vw, 10rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  background: linear-gradient(140deg, var(--itk-text) 20%, var(--itk-accent) 70%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: var(--itk-space-4);
}

/* ============================================================
   19. FILTER CHIPS / TABS
   ============================================================ */
.itk-filter-bar {
  display: flex;
  gap: var(--itk-space-2);
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: var(--itk-space-6);
}

.itk-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--itk-border);
  background: transparent;
  color: var(--itk-text-muted);
  font-family: var(--itk-font-sans);
  font-size: 0.84rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--itk-dur) var(--itk-ease);
}

.itk-chip:hover {
  border-color: var(--itk-accent);
  color: var(--itk-text);
}

.itk-chip--active {
  background: var(--itk-accent-soft);
  border-color: rgba(79, 140, 255, 0.4);
  color: var(--itk-accent);
}

/* tools grid category-switch loading state */
.itk-grid--loading { position: relative; min-height: 160px; }
.itk-grid--loading::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--itk-accent) 8%, transparent), transparent);
  background-size: 200% 100%;
  animation: itk-shimmer 1.2s infinite;
}
@keyframes itk-shimmer { from { background-position: 200% 0; } to { background-position: -200% 0; } }

/* ============================================================
   20. TABLE
   ============================================================ */
.itk-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--itk-border-soft);
  border-radius: var(--itk-radius);
}

.itk-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  min-width: 600px;
}

.itk-table th {
  text-align: left;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--itk-text-faint);
  padding: var(--itk-space-3) var(--itk-space-4);
  background: var(--itk-bg-2);
  border-bottom: 1px solid var(--itk-border-soft);
}

.itk-table td {
  padding: var(--itk-space-3) var(--itk-space-4);
  border-bottom: 1px solid var(--itk-border-soft);
  color: var(--itk-text-muted);
}

.itk-table tr:last-child td { border-bottom: none; }

/* ============================================================
   21. PRIVACY / STATUS DONUTS
   ============================================================ */
.itk-findings {
  display: grid;
  gap: var(--itk-space-2);
  margin-top: var(--itk-space-4);
}

.itk-finding {
  display: flex;
  align-items: center;
  gap: var(--itk-space-3);
  padding: var(--itk-space-3) var(--itk-space-4);
  background: var(--itk-bg-2);
  border: 1px solid var(--itk-border-soft);
  border-radius: var(--itk-radius);
  font-size: 0.88rem;
}

.itk-finding__icon { flex-shrink: 0; display: flex; }
.itk-finding__label { flex: 1; color: var(--itk-text-muted); }
.itk-finding__value { font-weight: 600; }

.itk-finding--found { border-color: rgba(251, 191, 36, 0.3); }
.itk-finding--found .itk-finding__value { color: var(--itk-warning); }
.itk-finding--clean { border-color: rgba(52, 211, 153, 0.2); }
.itk-finding--clean .itk-finding__value { color: var(--itk-success); }

/* ============================================================
   22. CALL TO ACTION BAND
   ============================================================ */
.itk-cta-band {
  position: relative;
  text-align: center;
  padding: var(--itk-space-9) 0;
  overflow: hidden;
}

.itk-cta-band::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: min(760px, 90vw);
  height: 320px;
  background: radial-gradient(circle, rgba(79, 140, 255, 0.14), transparent 65%);
  pointer-events: none;
}

.itk-cta-band h2 {
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: var(--itk-space-3);
}

.itk-cta-band p {
  color: var(--itk-text-muted);
  max-width: 520px;
  margin: 0 auto var(--itk-space-6);
}

/* ============================================================
   23. PILL / GENERIC UI
   ============================================================ */
.itk-pill-row {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
}

.itk-pill {
  display: inline-flex;
  align-items: center;
  font-size: 0.72rem;
  font-family: var(--itk-font-mono);
  color: var(--itk-text-muted);
  padding: 3px 9px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--itk-border-soft);
}

/* Range input */
.itk-slider {
  width: 100%;
  accent-color: var(--itk-accent);
}

.itk-field {
  display: grid;
  gap: var(--itk-space-2);
  margin-bottom: var(--itk-space-4);
}

.itk-field__label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--itk-text-muted);
}

.itk-input,
.itk-select {
  width: 100%;
  background: var(--itk-surface-2);
  border: 1px solid var(--itk-border);
  border-radius: var(--itk-radius);
  padding: 0.6rem 0.9rem;
  color: var(--itk-text);
  font-family: var(--itk-font-sans);
  font-size: 0.9rem;
  transition: border-color var(--itk-dur);
}

.itk-input:focus,
.itk-select:focus {
  outline: none;
  border-color: var(--itk-accent);
}

.itk-input-group {
  display: flex;
  gap: var(--itk-space-3);
  flex-wrap: wrap;
  align-items: flex-end;
}

/* Format switch pills for converters */
.itk-fmt-switch {
  display: inline-flex;
  gap: 4px;
  background: var(--itk-bg-2);
  border: 1px solid var(--itk-border);
  border-radius: var(--itk-radius);
  padding: 4px;
}

.itk-fmt-switch button {
  padding: 0.45rem 1rem;
  border: none;
  border-radius: 7px;
  background: transparent;
  color: var(--itk-text-muted);
  font-family: var(--itk-font-mono);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--itk-dur);
}

.itk-fmt-switch button:hover { color: var(--itk-text); }

.itk-fmt-switch button[aria-pressed="true"] {
  background: var(--itk-accent-soft);
  color: var(--itk-accent);
  border: 1px solid rgba(79, 140, 255, 0.3);
}

/* ============================================================
   24. RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .itk-hero__inner { gap: var(--itk-space-5); }
  .itk-footer__grid { grid-template-columns: 1fr 1fr; }
  .itk-feature-row { grid-template-columns: 1fr; }
  .itk-feature-row--reverse .itk-feature-row__media { order: 0; }
  .itk-content--sidebar { grid-template-columns: 1fr; }
  .itk-sidebar { position: static; }
  .itk-mega { width: 560px; }
}

@media (max-width: 900px) {
  .itk-hero__inner { grid-template-columns: 1fr; }
  .itk-scene { margin-top: var(--itk-space-6); }
  .itk-nav, .itk-header-search { display: none; }
  .itk-burger { display: flex; }
  .itk-header__cta { display: none; }
  .itk-result__grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .itk-footer__grid { grid-template-columns: 1fr; gap: var(--itk-space-5); }
  .itk-footer__bottom { flex-direction: column; text-align: center; }
  .itk-tool-panel { padding: var(--itk-space-4); }
  .itk-upload-zone { padding: var(--itk-space-5) var(--itk-space-4); }
  .itk-compare { grid-template-columns: 1fr; }
  .itk-hero__stats { gap: var(--itk-space-4); }
  .itk-scene { height: 420px; }
  .itk-scene__image-card { width: 210px; }
  .itk-scene__compress-card { width: 170px; }
  .itk-scene__privacy-card { width: 150px; }
  .itk-scene__convert-card { width: 180px; }
}

/* ============================================================
   25. REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================
   26. UTILITIES
   ============================================================ */
.itk-hidden { display: none !important; }
.itk-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.itk-mt-0 { margin-top: 0; }
.itk-mt-3 { margin-top: var(--itk-space-3); }
.itk-mt-5 { margin-top: var(--itk-space-5); }
.itk-mb-0 { margin-bottom: 0; }
.itk-text-center { text-align: center; }
.itk-no-scroll { overflow: hidden; }

/* ============================================================
   27. FILE LIBRARY TRAY + LIVE PREVIEW
   ============================================================ */
.itk-tray {
  margin: 0 0 var(--itk-space-4);
  padding: var(--itk-space-3);
  border: 1px solid var(--itk-border, rgba(127, 127, 127, 0.25));
  border-radius: var(--itk-radius, 12px);
  background: var(--itk-surface-soft, rgba(127, 127, 127, 0.05));
}
.itk-tray__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--itk-space-3);
  margin-bottom: var(--itk-space-3);
  flex-wrap: wrap;
}
.itk-tray__count {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--itk-text-muted, #6b7280);
}
.itk-tray__actions {
  display: flex;
  align-items: center;
  gap: var(--itk-space-2);
  flex-wrap: wrap;
}
.itk-tray__cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(104px, 1fr));
  gap: var(--itk-space-2);
}
.itk-tray__card {
  position: relative;
  border: 1px solid var(--itk-border, rgba(127, 127, 127, 0.25));
  border-radius: 10px;
  padding: var(--itk-space-2);
  background: var(--itk-surface, #fff);
  cursor: pointer;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.itk-tray__card:hover,
.itk-tray__card:focus-visible {
  border-color: var(--itk-accent, #4f46e5);
  outline: none;
}
.itk-tray__card--active {
  border-color: var(--itk-accent, #4f46e5);
  box-shadow: 0 0 0 2px var(--itk-accent-soft, rgba(79, 70, 229, 0.2));
}
.itk-tray__thumb {
  display: block;
  width: 100%;
  height: 64px;
  border-radius: 6px;
  overflow: hidden;
  background: rgba(127, 127, 127, 0.08);
}
.itk-tray__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.itk-tray__name {
  display: block;
  margin-top: var(--itk-space-1);
  font-size: 0.72rem;
  color: var(--itk-text-muted, #6b7280);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.itk-tray__remove {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 20px;
  height: 20px;
  border: 0;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  font-size: 0.85rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.15s ease;
}
.itk-tray__card:hover .itk-tray__remove,
.itk-tray__card:focus-within .itk-tray__remove {
  opacity: 1;
}
.itk-tray__remove:hover {
  background: #dc2626;
}

.itk-preview {
  margin: 0 0 var(--itk-space-4);
  border: 1px solid var(--itk-border, rgba(127, 127, 127, 0.25));
  border-radius: 12px;
  overflow: hidden;
  background: var(--itk-surface, #fff);
}
.itk-preview__stage {
  padding: var(--itk-space-3);
  text-align: center;
}
.itk-preview__stage img {
  max-width: 100%;
  max-height: 320px;
  border-radius: 8px;
  display: inline-block;
}
.itk-preview__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--itk-space-2);
  flex-wrap: wrap;
  padding: var(--itk-space-2) var(--itk-space-3);
  border-top: 1px solid var(--itk-border, rgba(127, 127, 127, 0.25));
  background: var(--itk-surface-soft, rgba(127, 127, 127, 0.04));
  font-size: 0.8rem;
}
.itk-preview__name {
  font-weight: 600;
  color: var(--itk-text, #111827);
}
.itk-preview__meta {
  color: var(--itk-text-muted, #6b7280);
}