/* ============================================
   SmarterSources - Free Online Image Tools
   Design System & Shared Styles
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=JetBrains+Mono:wght@400;500&display=swap');

/* --- CSS Variables --- */
:root {
  --color-bg: #f8f9fc;
  --color-surface: #ffffff;
  --color-surface-hover: #f1f5f9;
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  --color-primary: #3b5bdb;
  --color-primary-hover: #2b4bc8;
  --color-primary-light: #edf2ff;
  --color-primary-subtle: #dbe4ff;
  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-text-muted: #94a3b8;
  --color-success: #10b981;
  --color-success-bg: #ecfdf5;
  --color-warning: #f59e0b;
  --color-warning-bg: #fffbeb;
  --color-error: #ef4444;
  --color-error-bg: #fef2f2;
  --color-accent-pink: #ec4899;
  --color-accent-violet: #8b5cf6;
  --color-accent-cyan: #06b6d4;
  --color-accent-orange: #f97316;

  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.08);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.1);
  --shadow-inset: inset 0 2px 4px rgba(0,0,0,0.04);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --max-width: 1200px;
  --header-height: 64px;

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

/* --- Typography --- */
h1, h2, h3, h4 {
  line-height: 1.25;
  font-weight: 600;
  color: var(--color-text);
}
h1 { font-size: 2.5rem; letter-spacing: -0.03em; }
h2 { font-size: 1.75rem; letter-spacing: -0.02em; }
h3 { font-size: 1.25rem; letter-spacing: -0.01em; }
h4 { font-size: 1.1rem; }

p { color: var(--color-text-secondary); line-height: 1.7; }

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.page-content {
  flex: 1;
  padding: 40px 0 80px;
}

/* --- Header --- */
.site-header {
  height: var(--header-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(255,255,255,0.92);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--color-text);
  text-decoration: none;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin-left: 16px;
}

.nav-links > li > a.nav-highlight {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 600;
}

.nav-links > li > a.nav-highlight:hover {
  background: var(--color-primary-subtle);
}

.nav-links > li {
  position: relative;
}

.nav-links > li > a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

.nav-links > li > a:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}

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

.nav-links .chevron {
  width: 12px;
  height: 12px;
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.nav-links > li:hover .chevron {
  transform: rotate(180deg);
}

/* Dropdown menus */
.nav-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  padding-top: 12px;
  min-width: 200px;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.nav-dropdown::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 0;
  right: 0;
  height: 8px;
}

.nav-links > li:hover .nav-dropdown {
  display: block;
  opacity: 1;
  pointer-events: auto;
}

.nav-dropdown a {
  display: block;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.nav-dropdown a:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.nav-dropdown .dropdown-divider {
  height: 1px;
  background: var(--color-border-light);
  margin: 4px 0;
}

.nav-dropdown .dropdown-label {
  padding: 6px 12px 4px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.nav-dropdown .dropdown-see-all {
  font-weight: 600 !important;
  color: var(--color-primary) !important;
  margin-top: 2px;
}

/* Mega menu (Toolkits dropdown) */
.nav-mega {
  min-width: 620px;
  width: min(620px, calc(100vw - 24px));
  max-width: calc(100vw - 24px);
  left: auto;
  right: 0;
  transform: none;
  padding: 20px;
}
.nav-mega-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 6px;
}
.nav-mega-grid a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius-sm, 8px);
  border: 1px solid transparent;
  transition: all 0.15s ease;
}
.nav-mega-grid a:hover {
  background: var(--color-primary-light, #edf2ff);
  border-color: var(--color-border-light, #e2e8f0);
}
.nav-mega-grid .mega-icon {
  font-size: 1.3rem;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-secondary, #f8fafc);
  border-radius: var(--radius-sm, 8px);
  flex-shrink: 0;
}
.nav-mega-grid a:hover .mega-icon {
  background: #fff;
}
.nav-mega-grid .mega-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.3;
}
.nav-mega-grid .mega-count {
  font-size: 0.65rem;
  color: var(--color-text-muted);
  font-weight: 500;
  background: var(--color-bg-secondary, #f8fafc);
  padding: 1px 6px;
  border-radius: 100px;
  display: inline-block;
  margin-top: 1px;
}
.nav-mega-grid a:hover .mega-label {
  color: var(--color-primary);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--color-text);
}

/* --- Hero Section --- */
.hero {
  text-align: center;
  padding: 60px 0 40px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  max-width: 560px;
  margin: 0 auto;
}

/* --- Tool Cards Grid --- */
.tools-section {
  padding: 20px 0 60px;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.tool-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all var(--transition-base);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  overflow: hidden;
}

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

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

.tool-card:hover::before { opacity: 1; }

.tool-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.tool-card h3 {
  font-size: 1rem;
  font-weight: 600;
}

.tool-card p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.tool-card .card-arrow {
  margin-top: auto;
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 4px;
  opacity: 0;
  transform: translateX(-8px);
  transition: all var(--transition-base);
}

.tool-card:hover .card-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* Card color variations */
.tool-card[data-color="blue"] .tool-card-icon { background: #edf2ff; color: #3b5bdb; }
.tool-card[data-color="green"] .tool-card-icon { background: #ecfdf5; color: #10b981; }
.tool-card[data-color="violet"] .tool-card-icon { background: #f3f0ff; color: #8b5cf6; }
.tool-card[data-color="pink"] .tool-card-icon { background: #fdf2f8; color: #ec4899; }
.tool-card[data-color="cyan"] .tool-card-icon { background: #ecfeff; color: #06b6d4; }
.tool-card[data-color="orange"] .tool-card-icon { background: #fff7ed; color: #f97316; }
.tool-card[data-color="blue"] { --card-accent: #3b5bdb; }
.tool-card[data-color="green"] { --card-accent: #10b981; }
.tool-card[data-color="violet"] { --card-accent: #8b5cf6; }
.tool-card[data-color="pink"] { --card-accent: #ec4899; }
.tool-card[data-color="cyan"] { --card-accent: #06b6d4; }
.tool-card[data-color="orange"] { --card-accent: #f97316; }

/* --- Tool Page Layout --- */
.tool-page-header {
  padding: 40px 0 30px;
  text-align: center;
}

.tool-page-header .breadcrumb {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.tool-page-header .breadcrumb a {
  color: var(--color-text-muted);
}

.tool-page-header .breadcrumb a:hover {
  color: var(--color-primary);
}

.tool-page-header h1 {
  font-size: 2.25rem;
  margin-bottom: 10px;
}

.tool-page-header p {
  font-size: 1.05rem;
  max-width: 520px;
  margin: 0 auto;
}

/* --- Tool Workspace --- */
.tool-workspace {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 40px;
  box-shadow: var(--shadow-sm);
}

/* --- Drop Zone --- */
.drop-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: 60px 40px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  background: var(--color-bg);
  position: relative;
}

.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.drop-zone-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
  opacity: 0.6;
}

.drop-zone h3 {
  margin-bottom: 8px;
  font-weight: 600;
}

.drop-zone p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.drop-zone input[type="file"] {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  overflow: hidden;
  pointer-events: none;
}

.drop-zone .browse-link {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* --- Controls Panel --- */
.controls-panel {
  display: none;
  gap: 24px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border-light);
}

.controls-panel.visible {
  display: flex;
  flex-wrap: wrap;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 180px;
  flex: 1;
}

.control-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.control-input {
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color var(--transition-fast);
  outline: none;
}

.control-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

select.control-input {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

/* Range Slider */
.range-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.range-wrapper input[type="range"] {
  flex: 1;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--color-border);
  border-radius: 3px;
  outline: none;
}

.range-wrapper input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(59,91,219,0.3);
}

.range-value {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text);
  min-width: 44px;
  text-align: right;
}

/* --- Preview Area --- */
.preview-area {
  display: none;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border-light);
}

.preview-area.visible { display: block; }

.preview-comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}

.preview-box {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.preview-box-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border-light);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.preview-box-header .file-size {
  font-family: var(--font-mono);
  font-weight: 500;
}

.preview-box img {
  width: 100%;
  height: 260px;
  object-fit: contain;
  background: repeating-conic-gradient(#f1f5f9 0% 25%, transparent 0% 50%) 50% / 16px 16px;
  padding: 8px;
}

/* --- Stats Bar --- */
.stats-bar {
  display: flex;
  gap: 24px;
  padding: 16px 20px;
  background: var(--color-success-bg);
  border: 1px solid #d1fae5;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
}

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

.stat-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #059669;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: #065f46;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 2px 8px rgba(59,91,219,0.25);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 4px 12px rgba(59,91,219,0.35);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-primary-subtle);
}

.btn-success {
  background: var(--color-success);
  color: white;
}

.btn-success:hover {
  background: #059669;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1rem;
  border-radius: var(--radius-md);
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-sm);
}

.action-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* --- Ad Zones --- */
.ad-zone {
  margin: 30px 0;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ad-zone-sidebar {
  min-height: 250px;
}

.ad-zone-leaderboard {
  min-height: 90px;
  max-width: 728px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Founder Blurb --- */
.founder-blurb {
  padding: 40px 0 20px;
}

.founder-blurb-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}

.founder-photo {
  width: 140px;
  height: 140px;
  border-radius: var(--radius-md);
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid var(--color-border-light);
}

.founder-text h2 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.founder-text p {
  font-size: 0.92rem;
  margin-bottom: 10px;
}

.founder-tip {
  font-weight: 600;
  color: var(--color-text) !important;
  margin-top: 6px;
}

.founder-tip-btn {
  margin-top: 8px;
  display: inline-flex;
  font-size: 0.85rem;
  padding: 10px 20px;
  cursor: default;
  opacity: 0.7;
}

@media (max-width: 768px) {
  .founder-blurb-inner {
    flex-direction: column;
    text-align: center;
    padding: 24px;
  }

  .founder-photo {
    width: 110px;
    height: 110px;
  }

  .founder-tip-btn {
    margin-left: auto;
    margin-right: auto;
  }
}

/* --- SEO Content Section --- */
.seo-content {
  padding: 40px 0;
}

.seo-content h2 {
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.seo-content h3 {
  font-size: 1.1rem;
  margin: 24px 0 10px;
}

.seo-content p {
  margin-bottom: 14px;
  font-size: 0.95rem;
}

.faq-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border-light);
}

.faq-item:last-child { border-bottom: none; }

.faq-item h4 {
  font-size: 1rem;
  margin-bottom: 8px;
  color: var(--color-text);
}

.faq-item p {
  font-size: 0.9rem;
}

/* --- Related Tools --- */
.related-tools {
  padding: 40px 0;
  border-top: 1px solid var(--color-border-light);
}

.related-tools h3 {
  margin-bottom: 20px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

/* --- Footer --- */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 40px 0;
  margin-top: auto;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-left p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 8px;
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

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

/* --- Utility --- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
}

.text-center { text-align: center; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mb-4 { margin-bottom: 16px; }

/* --- Spinner --- */
.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

.processing-overlay {
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.9);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  border-radius: var(--radius-md);
  z-index: 10;
  backdrop-filter: blur(4px);
}

.processing-overlay p {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

/* --- Animations --- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  animation: fadeInUp 0.4s var(--transition-slow) both;
}

.delay-1 { animation-delay: 0.05s; }
.delay-2 { animation-delay: 0.1s; }
.delay-3 { animation-delay: 0.15s; }
.delay-4 { animation-delay: 0.2s; }
.delay-5 { animation-delay: 0.25s; }
.delay-6 { animation-delay: 0.3s; }
.delay-7 { animation-delay: 0.35s; }
.delay-8 { animation-delay: 0.4s; }

/* --- Multi-file list --- */
.file-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 16px;
}

.file-list-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

.file-list-item .file-name {
  flex: 1;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-list-item .file-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.file-list-item .remove-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  font-size: 1.1rem;
  padding: 2px 6px;
  border-radius: 4px;
  transition: all var(--transition-fast);
}

.file-list-item .remove-btn:hover {
  background: var(--color-error-bg);
  color: var(--color-error);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  .hero h1 { font-size: 2.2rem; }
  .tool-page-header h1 { font-size: 1.75rem; }

  .tools-grid {
    grid-template-columns: 1fr;
  }

  .preview-comparison {
    grid-template-columns: 1fr;
  }

  .stats-bar {
    flex-wrap: wrap;
    gap: 16px;
  }

  .controls-panel.visible {
    flex-direction: column;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    flex-direction: column;
    padding: 12px 24px 16px;
    gap: 2px;
    margin-left: 0;
  }
  .nav-links.show { display: flex; }
  .nav-links > li > a { padding: 10px 12px; font-size: 0.92rem; }
  .nav-links .chevron { display: none; }
  .nav-dropdown {
    position: static;
    transform: none;
    border: none;
    box-shadow: none;
    padding: 0 0 0 16px;
    min-width: auto;
    display: none;
    opacity: 1;
    pointer-events: auto;
  }
  .nav-links > li:hover .nav-dropdown { display: none; }
  .nav-links > li.open .nav-dropdown { display: block; }
  .nav-mega { min-width: auto; width: auto; max-width: none; padding: 8px 0; }
  .nav-mega-grid { grid-template-columns: 1fr 1fr; gap: 4px; }
  .nav-mega-grid .mega-icon { width: 28px; height: 28px; font-size: 1rem; }
  .mobile-menu-btn { display: block; }

  .tool-workspace { padding: 20px; }
  .drop-zone { padding: 40px 20px; }

  .footer-content { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }

  .related-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .related-grid {
    grid-template-columns: 1fr;
  }

  .action-buttons {
    flex-direction: column;
  }

  .action-buttons .btn {
    width: 100%;
  }
}

/* =============================================
   Toolkit Scroller — infinite horizontal strip
   ============================================= */
.toolkit-scroller {
  position: relative;
  overflow: hidden;
  padding: 20px 0;
  margin: 0 -24px;
  -webkit-user-select: none;
  user-select: none;
}

/* Gradient edge-fade masks */
.toolkit-scroller::before,
.toolkit-scroller::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 60px;
  z-index: 2;
  pointer-events: none;
}
.toolkit-scroller::before {
  left: 0;
  background: linear-gradient(to right, var(--color-surface, #fff) 0%, transparent 100%);
}
.toolkit-scroller::after {
  right: 0;
  background: linear-gradient(to left, var(--color-surface, #fff) 0%, transparent 100%);
}

/* The scrolling track */
.toolkit-scroller-track {
  display: flex;
  gap: 12px;
  width: max-content;
  animation: toolkitScroll 40s linear infinite;
}
.toolkit-scroller:hover .toolkit-scroller-track {
  animation-play-state: paused;
}
.toolkit-scroller-track.is-dragging {
  animation-play-state: paused;
  cursor: grabbing;
}

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

/* Individual chip */
.toolkit-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--color-surface, #fff);
  border: 1px solid var(--color-border, #e2e8f0);
  border-radius: 100px;
  text-decoration: none;
  color: var(--color-text, #1e293b);
  font-size: 0.875rem;
  font-weight: 500;
  white-space: nowrap;
  box-shadow: var(--shadow-sm, 0 1px 2px rgba(0,0,0,0.04));
  transition: all var(--transition-base, 250ms ease);
  cursor: pointer;
  flex-shrink: 0;
}
.toolkit-chip:hover {
  border-color: var(--color-primary-subtle, #bac8ff);
  box-shadow: var(--shadow-md, 0 4px 12px rgba(0,0,0,0.06));
  transform: translateY(-2px);
  color: var(--color-primary, #3b5bdb);
}

.toolkit-chip-icon {
  font-size: 1.2rem;
  line-height: 1;
}

.toolkit-chip-label {
  font-weight: 600;
}

.toolkit-chip-count {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--color-text-muted, #94a3b8);
  background: var(--color-bg, #f8f9fc);
  padding: 2px 8px;
  border-radius: 100px;
}

/* Tool pages: scroller sits above footer with spacing */
.tool-workspace + .toolkit-scroller,
.seo-content + .toolkit-scroller {
  margin-top: 48px;
  margin-left: 0;
  margin-right: 0;
}

@media (max-width: 768px) {
  .toolkit-scroller {
    padding: 16px 0;
  }
  .toolkit-chip {
    padding: 8px 14px;
    gap: 6px;
    font-size: 0.8rem;
  }
  .toolkit-chip-icon {
    font-size: 1rem;
  }
  .toolkit-chip-count {
    font-size: 0.65rem;
    padding: 1px 6px;
  }
  .toolkit-scroller::before,
  .toolkit-scroller::after {
    width: 32px;
  }
}