/* ============================================================
   Pixotter — Main Stylesheet
   Mobile-first, dark mode, CSS custom properties
   ============================================================ */

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

/* ── Custom Properties ── */
:root {
  /* Brand */
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-light: #eff6ff;
  --color-primary-border: #bfdbfe;
  --color-accent: #10b981;
  --color-accent-light: #ecfdf5;
  --color-accent-border: #a7f3d0;
  --color-danger: #ef4444;
  --color-danger-light: #fef2f2;
  --color-warning: #f59e0b;

  /* Neutral */
  --color-bg: #ffffff;
  --color-bg-subtle: #f8fafc;
  --color-bg-surface: #f1f5f9;
  --color-border: #e2e8f0;
  --color-border-subtle: #f1f5f9;
  --color-text: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #94a3b8;
  --color-text-invert: #ffffff;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;

  /* Sizing */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

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

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.07);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.07), 0 4px 6px -4px rgb(0 0 0 / 0.07);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.08), 0 8px 10px -6px rgb(0 0 0 / 0.08);

  /* Transitions */
  --transition-fast: 120ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 350ms ease;

  /* Layout */
  --max-width: 1120px;
  --header-height: 60px;
}

/* ── Dark Mode ── */
[data-theme="dark"],
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #0f172a;
    --color-bg-subtle: #0f172a;
    --color-bg-surface: #1e293b;
    --color-border: #334155;
    --color-border-subtle: #1e293b;
    --color-text: #e2e8f0;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #475569;
    --color-text-invert: #0f172a;
    --color-primary-light: #1e3a5f;
    --color-primary-border: #1e40af;
    --color-accent-light: #064e3b;
    --color-accent-border: #065f46;
    --color-danger-light: #450a0a;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.25), 0 2px 4px -2px rgb(0 0 0 / 0.25);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.35), 0 8px 10px -6px rgb(0 0 0 / 0.35);
  }
}

[data-theme="dark"] {
  --color-bg: #0f172a;
  --color-bg-subtle: #0f172a;
  --color-bg-surface: #1e293b;
  --color-border: #334155;
  --color-border-subtle: #1e293b;
  --color-text: #e2e8f0;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #475569;
  --color-text-invert: #0f172a;
  --color-primary-light: #1e3a5f;
  --color-primary-border: #1e40af;
  --color-accent-light: #064e3b;
  --color-accent-border: #065f46;
  --color-danger-light: #450a0a;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.25), 0 2px 4px -2px rgb(0 0 0 / 0.25);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.35), 0 8px 10px -6px rgb(0 0 0 / 0.35);
}

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

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--transition-slow), color var(--transition-slow);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ── Layout ── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-6);
  }
}

/* ── 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-width: 0;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ============================================================
   Header
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background-color var(--transition-slow), border-color var(--transition-slow);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-text);
  text-decoration: none;
  flex-shrink: 0;
}

.logo:hover {
  color: var(--color-text);
  text-decoration: none;
}

.logo img,
.logo svg {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.logo-text {
  color: var(--color-text);
}

.logo-text span {
  color: var(--color-primary);
}

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

.site-nav a {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.site-nav a:hover {
  color: var(--color-text);
  background-color: var(--color-bg-surface);
  text-decoration: none;
}

.site-nav a.active {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background-color: var(--color-bg);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.theme-toggle:hover {
  background-color: var(--color-bg-surface);
  color: var(--color-text);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.theme-toggle svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-slow);
}

.theme-toggle:active svg {
  transform: rotate(20deg);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: none;
  color: var(--color-text);
  cursor: pointer;
}

@media (max-width: 767px) {
  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-3) var(--space-4);
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav a {
    padding: var(--space-3) var(--space-4);
  }

  .nav-toggle {
    display: flex;
  }
}

/* ============================================================
   Hero / Drop Zone Section
   ============================================================ */

.hero {
  padding: var(--space-12) 0 var(--space-8);
  text-align: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.hero h1 em {
  font-style: normal;
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto var(--space-3);
  line-height: 1.5;
}

.hero-trust {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin: 0 auto var(--space-8);
}

/* ── Drop Zone ── */
.drop-zone {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  padding: var(--space-10) var(--space-8);
  margin: 0 auto;
  max-width: 720px;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-xl);
  background-color: var(--color-bg-subtle);
  cursor: pointer;
  transition:
    border-color var(--transition-base),
    background-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-fast);
  user-select: none;
  -webkit-user-select: none;
}

.drop-zone:hover,
.drop-zone:focus-visible {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--color-primary) 10%, transparent);
  outline: none;
}

.drop-zone.active,
.drop-zone[data-dragover] {
  border-color: var(--color-primary);
  border-style: solid;
  background-color: var(--color-primary-light);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--color-primary) 15%, transparent);
  transform: scale(1.01);
}

.drop-zone.has-files {
  border-style: solid;
  border-color: var(--color-accent);
  background-color: var(--color-accent-light);
}

.drop-zone.has-files:hover {
  border-color: var(--color-accent);
  background-color: var(--color-accent-light);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--color-accent) 12%, transparent);
}

.drop-zone-icon {
  width: 56px;
  height: 56px;
  margin-bottom: var(--space-4);
  color: var(--color-primary);
  opacity: 0.7;
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.drop-zone:hover .drop-zone-icon,
.drop-zone.active .drop-zone-icon {
  opacity: 1;
  transform: translateY(-4px);
}

.drop-zone-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.drop-zone-subtitle {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

.drop-zone-formats {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: var(--space-3);
}

.drop-zone-file-count {
  display: none;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-accent);
}

.drop-zone.has-files .drop-zone-file-count {
  display: block;
}

.drop-zone.has-files .drop-zone-subtitle {
  display: none;
}

.drop-zone-input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

/* ── Drop Zone Loading State ── */
.drop-zone.loading {
  cursor: wait;
}

.wasm-loading {
  display: none;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.875rem;
  color: var(--color-primary);
  font-weight: 500;
  margin-top: var(--space-4);
}

.drop-zone.loading .wasm-loading {
  display: flex;
}

.wasm-loading-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-primary-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* ============================================================
   Auto-Detect / Smart Suggestions
   ============================================================ */

.auto-detect {
  max-width: 720px;
  margin: var(--space-4) auto 0;
  padding: var(--space-4) var(--space-5);
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  animation: slideDown var(--transition-slow) ease;
}

.auto-detect-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.auto-detect-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.auto-detect-dismiss {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 1rem;
  padding: 2px;
  line-height: 1;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.auto-detect-dismiss:hover {
  color: var(--color-text-secondary);
}

.suggestion {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border-subtle);
}

.suggestion:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.suggestion-text {
  font-size: 0.9375rem;
  color: var(--color-text);
  flex: 1;
}

.suggestion-icon {
  font-size: 1.125rem;
  flex-shrink: 0;
}

/* ============================================================
   Tool Grid
   ============================================================ */

.tool-grid-section {
  padding: var(--space-10) 0;
}

.section-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-5);
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

@media (min-width: 480px) {
  .tool-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 768px) {
  .tool-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-4);
  }
}

@media (min-width: 1024px) {
  .tool-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

.tool-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-5) var(--space-3);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--color-text);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast),
    background-color var(--transition-fast);
  cursor: pointer;
}

.tool-card:hover {
  border-color: var(--color-primary-border);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  background-color: var(--color-bg);
  color: var(--color-text);
  text-decoration: none;
}

.tool-card:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.tool-card-icon {
  font-size: 1.75rem;
  line-height: 1;
}

.tool-card-label {
  font-size: 0.8125rem;
  font-weight: 600;
  text-align: center;
  color: var(--color-text);
}

.tool-card.featured {
  border-color: var(--color-primary-border);
  background-color: var(--color-primary-light);
}

.tool-card.featured .tool-card-label {
  color: var(--color-primary);
}

.tool-card.ai-tool {
  position: relative;
}

.tool-card.ai-tool::after {
  content: "AI";
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  background-color: var(--color-primary);
  color: white;
  padding: 1px 5px;
  border-radius: var(--radius-full);
}

/* ============================================================
   Pipeline Configurator
   ============================================================ */

.tool-config {
  padding: var(--space-8) 0;
}

.tool-config-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
  gap: var(--space-3);
}

.tool-config-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
}

.tool-config-subtitle {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

.tool-options-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.tool-option {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background-color: var(--color-bg);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.tool-option.active {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.tool-option-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  cursor: pointer;
  user-select: none;
  transition: background-color var(--transition-fast);
}

.tool-option-header:hover {
  background-color: var(--color-bg-subtle);
}

.tool-option-checkbox {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  cursor: pointer;
  flex-shrink: 0;
}

.tool-option-icon {
  font-size: 1.125rem;
  flex-shrink: 0;
}

.tool-option-label {
  flex: 1;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
}

.tool-option-summary {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.tool-option-chevron {
  color: var(--color-text-muted);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

.tool-option.active .tool-option-chevron {
  transform: rotate(180deg);
}

.tool-option-settings {
  display: none;
  padding: 0 var(--space-4) var(--space-4);
  padding-left: calc(var(--space-4) + 18px + var(--space-3) + 1.125rem + var(--space-3));
  border-top: 1px solid var(--color-border-subtle);
  background-color: var(--color-bg-subtle);
}

.tool-option.active .tool-option-settings {
  display: block;
}

.settings-grid {
  display: grid;
  gap: var(--space-4);
  padding-top: var(--space-4);
}

@media (min-width: 480px) {
  .settings-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.setting-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.setting-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

/* ── Drag handles for reordering ── */
.tool-option-drag-handle {
  color: var(--color-text-muted);
  cursor: grab;
  padding: 0 var(--space-2) 0 0;
  flex-shrink: 0;
  opacity: 0.4;
  transition: opacity var(--transition-fast);
}

.tool-option:hover .tool-option-drag-handle {
  opacity: 0.8;
}

.tool-option-drag-handle:active {
  cursor: grabbing;
}

.tool-option.dragging {
  opacity: 0.5;
  box-shadow: var(--shadow-xl);
}

/* ── Order tooltip ── */
.order-tooltip {
  display: inline-block;
  position: relative;
}

.order-tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-text);
  color: var(--color-bg);
  font-size: 0.75rem;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: 10;
}

.order-tooltip:hover::after {
  opacity: 1;
}

/* ============================================================
   Forms & Inputs
   ============================================================ */

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
}

.form-label-hint {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--color-text-muted);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  line-height: 1.5;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  -webkit-appearance: none;
}

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

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 15%, transparent);
}

.form-input-with-unit {
  display: flex;
  align-items: center;
  gap: 0;
}

.form-input-with-unit .form-input {
  border-radius: var(--radius-md) 0 0 var(--radius-md);
  flex: 1;
  min-width: 0;
}

.form-input-unit {
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-left: none;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  white-space: nowrap;
  line-height: 1.5;
  height: 100%;
}

/* ── Range Slider ── */
.form-range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: var(--radius-full);
  background-color: var(--color-border);
  outline: none;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.form-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: var(--color-primary);
  cursor: grab;
  box-shadow: 0 0 0 2px var(--color-bg), 0 0 0 3px var(--color-primary-border);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.form-range::-webkit-slider-thumb:active {
  cursor: grabbing;
  transform: scale(1.2);
}

.form-range::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: var(--color-primary);
  cursor: grab;
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 0 1px var(--color-primary-border);
}

.form-range:focus-visible::-webkit-slider-thumb {
  box-shadow: 0 0 0 2px var(--color-bg), 0 0 0 4px var(--color-primary);
}

.range-with-value {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-3);
  align-items: center;
}

.range-value-display {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-primary);
  min-width: 3ch;
  text-align: right;
}

/* ── Number Input ── */
input[type="number"].form-input {
  -moz-appearance: textfield;
}

input[type="number"].form-input::-webkit-inner-spin-button,
input[type="number"].form-input::-webkit-outer-spin-button {
  opacity: 1;
}

/* ── Checkbox & Radio ── */
.form-checkbox,
.form-radio {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.check-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  font-size: 0.9375rem;
  color: var(--color-text);
}

/* ── Toggle Switch ── */
.toggle-switch {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
}

.toggle-track {
  position: relative;
  width: 44px;
  height: 24px;
  background-color: var(--color-border);
  border-radius: var(--radius-full);
  transition: background-color var(--transition-base);
  flex-shrink: 0;
}

.toggle-track::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  background-color: white;
  border-radius: 50%;
  transition: transform var(--transition-base);
  box-shadow: 0 1px 3px rgb(0 0 0 / 0.2);
}

input:checked + .toggle-track {
  background-color: var(--color-primary);
}

input:checked + .toggle-track::after {
  transform: translateX(20px);
}

input.toggle-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

/* ============================================================
   Buttons
   ============================================================ */

.btn-primary,
.btn-secondary,
.btn-ghost,
.btn-danger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 10px var(--space-5);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.4;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
  user-select: none;
  -webkit-user-select: none;
}

.btn-primary:hover,
.btn-secondary:hover,
.btn-ghost:hover,
.btn-danger:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary:active,
.btn-secondary:active,
.btn-ghost:active,
.btn-danger:active {
  transform: translateY(0);
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
  box-shadow: 0 1px 3px color-mix(in srgb, var(--color-primary) 30%, transparent);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--color-primary) 35%, transparent);
  color: white;
}

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

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

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

.btn-secondary:hover {
  background-color: var(--color-bg-surface);
  border-color: var(--color-text-muted);
  color: var(--color-text);
}

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

.btn-ghost:hover {
  background-color: var(--color-bg-surface);
  color: var(--color-text);
}

.btn-danger {
  background-color: transparent;
  color: var(--color-danger);
  border-color: var(--color-danger);
}

.btn-danger:hover {
  background-color: var(--color-danger-light);
}

/* Size variants */
.btn-sm {
  padding: 6px var(--space-3);
  font-size: 0.8125rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 14px var(--space-8);
  font-size: 1.0625rem;
  border-radius: var(--radius-lg);
}

.btn-xl {
  padding: 18px var(--space-10);
  font-size: 1.125rem;
  border-radius: var(--radius-lg);
}

.btn-icon {
  padding: 8px;
  border-radius: var(--radius-md);
}

.btn-icon.btn-sm {
  padding: 5px;
}

.btn-block {
  width: 100%;
}

/* Process CTA */
.btn-process {
  background: linear-gradient(135deg, var(--color-primary) 0%, color-mix(in srgb, var(--color-primary) 80%, #7c3aed) 100%);
  color: white;
  border: none;
  padding: 16px var(--space-10);
  font-size: 1.0625rem;
  font-weight: 700;
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 14px color-mix(in srgb, var(--color-primary) 40%, transparent);
  transition: all var(--transition-base);
}

.btn-process:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px color-mix(in srgb, var(--color-primary) 45%, transparent);
  color: white;
}

.btn-process kbd {
  display: inline-block;
  padding: 1px 5px;
  background: rgb(255 255 255 / 0.2);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.75em;
  font-weight: 600;
}

/* ============================================================
   Progress Bar
   ============================================================ */

.progress-bar {
  width: 100%;
  height: 6px;
  background-color: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background-color: var(--color-primary);
  transition: width 0.3s ease;
  position: relative;
  overflow: hidden;
}

.progress-fill::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgb(255 255 255 / 0.3) 50%,
    transparent 100%
  );
  animation: shimmer 1.5s infinite;
}

.progress-indeterminate .progress-fill {
  width: 30% !important;
  animation: progressSlide 1.5s ease-in-out infinite;
}

.progress-success .progress-fill {
  background-color: var(--color-accent);
}

.progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}

/* ============================================================
   Loading Overlay
   ============================================================ */

.loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  background-color: rgb(255 255 255 / 0.85);
  backdrop-filter: blur(4px);
}

[data-theme="dark"] .loading-overlay {
  background-color: rgb(15 23 42 / 0.85);
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-message {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
}

.loading-submessage {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* Inline spinner */
.spinner-sm {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--color-border);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
}

/* ============================================================
   Results Section
   ============================================================ */

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

.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-3);
}

.results-summary {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.results-summary-stat {
  display: flex;
  flex-direction: column;
}

.results-summary-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.2;
}

.results-summary-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.result-items {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

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

.result-item:hover {
  box-shadow: var(--shadow-md);
}

.result-item-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background-color: var(--color-bg-subtle);
  border-bottom: 1px solid var(--color-border);
}

.result-item-thumb {
  width: 48px;
  height: 48px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  border: 1px solid var(--color-border);
}

.result-item-name {
  flex: 1;
  min-width: 0;
}

.result-item-filename {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.result-item-meta {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

.result-item-timer {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.result-item-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.result-item-body {
  padding: var(--space-4);
}

/* ── Result Stats ── */
.result-stats {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.stat-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.875rem;
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-bg-subtle);
  border-radius: var(--radius-sm);
}

.stat-row-icon {
  font-size: 0.875rem;
  flex-shrink: 0;
}

.stat-row-label {
  flex: 1;
  color: var(--color-text-secondary);
}

.stat-row-value {
  font-weight: 600;
  color: var(--color-text);
  text-align: right;
}

.savings {
  color: var(--color-accent);
  font-weight: 700;
}

.savings.negative {
  color: var(--color-danger);
}

/* ── Before/After Slider ── */
.before-after {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  user-select: none;
  -webkit-user-select: none;
  border: 1px solid var(--color-border);
}

.before-after-label {
  position: absolute;
  top: var(--space-2);
  padding: 2px var(--space-2);
  background: rgb(0 0 0 / 0.6);
  color: white;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  z-index: 2;
  pointer-events: none;
}

.before-after-label.before {
  left: var(--space-2);
}

.before-after-label.after {
  right: var(--space-2);
}

.before-after img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.slider-container {
  position: relative;
  overflow: hidden;
  cursor: ew-resize;
}

.slider-before,
.slider-after {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.slider-before {
  overflow: hidden;
}

.slider-divider {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: white;
  z-index: 3;
  box-shadow: 0 0 0 1px rgb(0 0 0 / 0.2);
}

.slider-handle {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 36px;
  height: 36px;
  background: white;
  border-radius: 50%;
  box-shadow: 0 2px 8px rgb(0 0 0 / 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 4;
  color: var(--color-text-secondary);
}

/* ============================================================
   Presets
   ============================================================ */

.presets {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: var(--space-3) 0;
}

.preset-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 5px var(--space-3);
  background-color: var(--color-bg-surface);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast);
  white-space: nowrap;
}

.preset-btn:hover {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border-color: var(--color-primary-border);
}

.preset-btn.active {
  background-color: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.preset-btn-custom {
  border-style: dashed;
  color: var(--color-text-muted);
}

.preset-btn-custom:hover {
  border-style: solid;
}

.presets-title {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
}

/* ============================================================
   Website Scanner Section
   ============================================================ */

.scanner-section {
  padding: var(--space-12) 0;
  background-color: var(--color-bg-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.scanner-inner {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.scanner-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.scanner-subtitle {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

.scanner-form {
  display: flex;
  gap: var(--space-2);
}

.scanner-form .form-input {
  flex: 1;
}

@media (max-width: 480px) {
  .scanner-form {
    flex-direction: column;
  }

  .scanner-form .btn-primary {
    width: 100%;
  }
}

.scanner-results {
  margin-top: var(--space-6);
  text-align: left;
}

.scanner-result-card {
  padding: var(--space-4);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.scanner-issue {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border-subtle);
}

.scanner-issue:last-child {
  border-bottom: none;
}

.scanner-issue-severity {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 7px;
}

.scanner-issue-severity.high { background-color: var(--color-danger); }
.scanner-issue-severity.medium { background-color: var(--color-warning); }
.scanner-issue-severity.low { background-color: var(--color-accent); }

/* ============================================================
   Toast Notifications
   ============================================================ */

.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  max-width: 380px;
  pointer-events: all;
  animation: toastIn var(--transition-base) ease;
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.toast.toast-out {
  opacity: 0;
  transform: translateX(100%);
}

.toast-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  line-height: 1.4;
}

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

.toast-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
}

.toast-message {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

.toast-action {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  margin-top: var(--space-2);
  display: block;
}

.toast-close {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 1rem;
  padding: 0;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
  transition: color var(--transition-fast);
}

.toast-close:hover {
  color: var(--color-text-secondary);
}

/* Toast variants */
.toast-success { border-left: 3px solid var(--color-accent); }
.toast-error { border-left: 3px solid var(--color-danger); }
.toast-warning { border-left: 3px solid var(--color-warning); }
.toast-info { border-left: 3px solid var(--color-primary); }

@media (max-width: 480px) {
  .toast-container {
    left: var(--space-4);
    right: var(--space-4);
    bottom: var(--space-4);
  }

  .toast {
    max-width: 100%;
  }
}

/* ============================================================
   Footer
   ============================================================ */

.site-footer {
  padding: var(--space-8) 0;
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg-subtle);
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.footer-brand-icon {
  width: 20px;
  height: 20px;
}

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

.footer-links a {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-text-secondary);
}

.footer-privacy-note {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.footer-privacy-note svg {
  width: 14px;
  height: 14px;
  color: var(--color-accent);
  flex-shrink: 0;
}

/* ── Counter ── */
.counter {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.counter-value {
  font-weight: 700;
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
}

.counter-label {
  color: var(--color-text-muted);
}

/* ============================================================
   Legal Pages
   ============================================================ */

.page-legal {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--space-12) var(--space-4);
}

.page-legal h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: var(--space-2);
  letter-spacing: -0.02em;
}

.page-legal .last-updated {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
}

.page-legal h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.page-legal h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-top: var(--space-5);
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.page-legal p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
  line-height: 1.7;
}

.page-legal ul,
.page-legal ol {
  padding-left: var(--space-5);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.page-legal li {
  margin-bottom: var(--space-2);
  line-height: 1.6;
}

.page-legal a {
  color: var(--color-primary);
  text-decoration: underline;
}

.page-legal strong {
  color: var(--color-text);
}

.legal-highlight-box {
  padding: var(--space-4) var(--space-5);
  background-color: var(--color-accent-light);
  border: 1px solid var(--color-accent-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-6);
}

.legal-highlight-box p {
  color: var(--color-text);
  margin-bottom: 0;
}

/* ============================================================
   Tool Page Layout
   ============================================================ */

.tool-page {
  padding: var(--space-8) 0 var(--space-16);
}

.tool-page-header {
  margin-bottom: var(--space-6);
}

.tool-page-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.tool-page-breadcrumb a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.tool-page-breadcrumb a:hover {
  color: var(--color-text-secondary);
}

.tool-page-breadcrumb-sep {
  color: var(--color-border);
}

.tool-page h1 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.tool-page-desc {
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  max-width: 540px;
}

/* ── Tool Card Layout ── */
.tool-main {
  display: grid;
  gap: var(--space-6);
}

@media (min-width: 1024px) {
  .tool-main {
    grid-template-columns: 1fr 320px;
    align-items: start;
  }
}

.tool-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.sidebar-card {
  padding: var(--space-5);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.sidebar-card-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ============================================================
   Info / Feature Section
   ============================================================ */

.features-section {
  padding: var(--space-16) 0;
}

.features-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-10);
}

.features-header h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: var(--space-3);
}

.features-header p {
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
}

.features-grid {
  display: grid;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  padding: var(--space-6);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.feature-card-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary-light);
  border-radius: var(--radius-md);
  font-size: 1.375rem;
  margin-bottom: var(--space-4);
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ============================================================
   Comparison Table (vs. competitors)
   ============================================================ */

.comparison-table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: var(--space-6) 0;
}

.comparison-table {
  width: 100%;
  min-width: 600px;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.comparison-table th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-weight: 700;
  color: var(--color-text);
  background-color: var(--color-bg-surface);
  border-bottom: 2px solid var(--color-border);
}

.comparison-table th.highlighted {
  background-color: var(--color-primary);
  color: white;
}

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

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

.comparison-table td.highlighted {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 600;
}

.check-yes {
  color: var(--color-accent);
  font-weight: 700;
}

.check-no {
  color: var(--color-danger);
}

.check-partial {
  color: var(--color-warning);
}

/* ============================================================
   Programmatic SEO page sections
   ============================================================ */

.seo-page-intro {
  display: grid;
  gap: var(--space-8);
  padding: var(--space-8) 0;
  align-items: center;
}

@media (min-width: 768px) {
  .seo-page-intro {
    grid-template-columns: 1fr 1fr;
  }
}

.seo-faq {
  padding: var(--space-10) 0;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  cursor: pointer;
  font-weight: 600;
  color: var(--color-text);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-size: 1rem;
  transition: color var(--transition-fast);
}

.faq-question:hover {
  color: var(--color-primary);
}

.faq-question-chevron {
  flex-shrink: 0;
  transition: transform var(--transition-base);
  color: var(--color-text-muted);
}

.faq-item.open .faq-question-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  padding-bottom: var(--space-4);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.faq-item.open .faq-answer {
  display: block;
}

/* ============================================================
   Otter Mascot States
   ============================================================ */

.otter-mascot {
  display: inline-block;
  transition: transform var(--transition-slow);
}

.otter-mascot[data-state="idle"] {
  animation: otterBob 3s ease-in-out infinite;
}

.otter-mascot[data-state="processing"] {
  animation: otterSpin 1s linear infinite;
}

.otter-mascot[data-state="success"] {
  animation: otterBounce 0.5s ease;
}

.otter-mascot[data-state="error"] {
  animation: otterShake 0.4s ease;
}

/* ============================================================
   Badges & Tags
   ============================================================ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px var(--space-2);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
}

.badge-primary {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border: 1px solid var(--color-primary-border);
}

.badge-success {
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  border: 1px solid var(--color-accent-border);
}

.badge-new {
  background-color: var(--color-primary);
  color: white;
}

.badge-pro {
  background: linear-gradient(135deg, #7c3aed, #2563eb);
  color: white;
}

/* ============================================================
   Upload File List
   ============================================================ */

.file-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.file-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background-color: var(--color-bg-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.file-item-icon {
  width: 32px;
  height: 32px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.file-item-name {
  flex: 1;
  min-width: 0;
  font-size: 0.875rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-item-size {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.file-item-remove {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 2px;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  flex-shrink: 0;
}

.file-item-remove:hover {
  color: var(--color-danger);
  background-color: var(--color-danger-light);
}

/* ── Batch info strip ── */
.batch-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-primary-light);
  border: 1px solid var(--color-primary-border);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
}

.batch-info-count {
  font-weight: 700;
  color: var(--color-primary);
}

/* ============================================================
   Pro Paywall Overlay
   ============================================================ */

.pro-gate {
  position: relative;
}

.pro-gate-overlay {
  position: absolute;
  inset: 0;
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  background: rgb(255 255 255 / 0.6);
  border-radius: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  z-index: 5;
  text-align: center;
  padding: var(--space-6);
}

[data-theme="dark"] .pro-gate-overlay {
  background: rgb(15 23 42 / 0.75);
}

.pro-gate-badge {
  font-size: 0.75rem;
  font-weight: 700;
  background: linear-gradient(135deg, #7c3aed, #2563eb);
  color: white;
  padding: 3px var(--space-3);
  border-radius: var(--radius-full);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.pro-gate-message {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
}

/* ============================================================
   Utility Classes
   ============================================================ */

.text-muted { color: var(--color-text-muted); }
.text-secondary { color: var(--color-text-secondary); }
.text-primary { color: var(--color-primary); }
.text-success { color: var(--color-accent); }
.text-danger { color: var(--color-danger); }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.text-lg { font-size: 1.125rem; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.divider {
  height: 1px;
  background-color: var(--color-border);
  border: none;
  margin: var(--space-6) 0;
}

.divider-vertical {
  width: 1px;
  background-color: var(--color-border);
  align-self: stretch;
}

.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }

.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }

.hidden { display: none !important; }
.block { display: block; }
.inline-flex { display: inline-flex; }

.w-full { width: 100%; }
.max-w-2xl { max-width: 672px; }
.max-w-3xl { max-width: 768px; }
.mx-auto { margin-left: auto; margin-right: auto; }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-full { border-radius: var(--radius-full); }

.overflow-hidden { overflow: hidden; }

/* ============================================================
   Animations
   ============================================================ */

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

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

@keyframes progressSlide {
  0% { transform: translateX(-100%); }
  50% { transform: translateX(0%); }
  100% { transform: translateX(300%); }
}

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateX(24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes otterBob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

@keyframes otterSpin {
  to { transform: rotate(360deg); }
}

@keyframes otterBounce {
  0% { transform: scale(1); }
  40% { transform: scale(1.2); }
  70% { transform: scale(0.95); }
  100% { transform: scale(1); }
}

@keyframes otterShake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-5px); }
  40%, 80% { transform: translateX(5px); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

.animate-spin {
  animation: spin 1s linear infinite;
}

/* ============================================================
   Print
   ============================================================ */

@media print {
  .site-header,
  .site-footer,
  .theme-toggle,
  .drop-zone,
  .tool-grid {
    display: none;
  }

  body {
    color: black;
    background: white;
  }
}

/* ============================================================
   New Tool Styles — Crop, Rotate, Watermark, Metadata, PDF
   ============================================================ */

/* ── Crop Ratio Buttons ── */
.crop-ratio-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.crop-ratio-btn {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.crop-ratio-btn:hover {
  border-color: var(--color-primary-border);
  background-color: var(--color-primary-light);
}

.crop-ratio-btn.active {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
  color: white;
}

/* ── Rotate Buttons ── */
.rotate-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.8125rem;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.rotate-btn:hover {
  border-color: var(--color-primary-border);
  background-color: var(--color-primary-light);
}

.rotate-btn input[type="radio"]:checked + span,
.rotate-btn:has(input:checked) {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

/* ── Metadata Viewer ── */
.metadata-viewer {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-5);
}

.metadata-basic-info {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  padding: var(--space-4);
  background: var(--color-bg-subtle);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.metadata-basic-info dt {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}

.metadata-basic-info dd {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  word-break: break-all;
}

.metadata-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
  margin-bottom: var(--space-4);
}

.metadata-table thead th {
  text-align: left;
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg-surface);
  border-bottom: 2px solid var(--color-border);
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  font-size: 0.6875rem;
  letter-spacing: 0.05em;
}

.metadata-table td {
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--color-border-subtle);
  vertical-align: top;
}

.metadata-key {
  font-weight: 500;
  color: var(--color-text-secondary);
  white-space: nowrap;
  max-width: 250px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.metadata-value {
  color: var(--color-text);
  word-break: break-all;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.metadata-empty {
  text-align: center;
  color: var(--color-text-muted);
  padding: var(--space-6);
}

.metadata-actions {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.metadata-privacy-note {
  margin-top: var(--space-4);
  padding: var(--space-3);
  background: var(--color-accent-light);
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  text-align: center;
}

/* ── PDF Image List ── */
.pdf-image-list {
  margin-bottom: var(--space-4);
}

.pdf-image-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
  background: var(--color-bg);
}

.pdf-image-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--color-primary);
  color: white;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}

.pdf-image-name {
  flex: 1;
  font-size: 0.875rem;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pdf-image-size {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

/* ── Setting Note ── */
.setting-note {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  padding: var(--space-2) 0;
}

/* ── Tool Card — coming soon ── */
.tool-card--soon {
  opacity: 0.5;
  cursor: default;
}

.tool-card--soon:hover {
  transform: none;
  box-shadow: none;
  border-color: var(--color-border);
}

/* ── Nav overflow for many links ── */
.site-header nav {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.site-header nav::-webkit-scrollbar {
  display: none;
}

/* ── Popular Tools & Related Articles (homepage) ── */
.popular-tools,
.related-articles {
  max-width: 800px;
  margin: var(--space-12) auto var(--space-4);
  padding: 0 var(--space-4);
}
.popular-tools h2,
.related-articles h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-4);
}
.popular-grid,
.articles-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.popular-grid a,
.articles-grid a {
  padding: var(--space-2) var(--space-4);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}
.popular-grid a:hover,
.articles-grid a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.popular-compare {
  margin-top: var(--space-4);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}
.popular-compare a {
  color: var(--color-text-secondary);
  font-weight: 500;
}
.popular-compare a:hover {
  color: var(--color-primary);
}

/* ── Related Articles (tool pages) ── */
.tool-related {
  max-width: 720px;
  margin: var(--space-8) auto;
  padding: var(--space-6) var(--space-4);
  border-top: 1px solid var(--color-border);
}
.tool-related h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-4);
}
.tool-related-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.tool-related-links a {
  padding: var(--space-2) var(--space-3);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}
.tool-related-links a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}