/* ==========================================================================
   DevTools Stylesheet - Minimalist Monochrome Developer Utilities
   No blue/indigo colors, clean borders, crisp typography, distraction-free
   Fully responsive across all screen sizes (mobile, tablet, desktop)
   ========================================================================== */

:root {
  /* Dark Mode (Default) - Pure Minimalist Palette */
  --bg-primary: #0c0c0e;
  --bg-secondary: #141417;
  --bg-surface: #18181b;
  --bg-surface-hover: #222226;
  --bg-card: #141416;
  --bg-card-hover: #1b1b1f;
  
  --border-color: #27272a;
  --border-subtle: #202024;
  --border-hover: #52525b;
  --border-focus: #a1a1aa;
  
  --text-primary: #fafafa;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  
  --badge-bg: #202024;
  --badge-text: #d4d4d8;
  --badge-border: #2e2e33;

  --btn-active-bg: #f4f4f5;
  --btn-active-text: #09090b;

  --scrollbar-thumb: #27272a;
  --scrollbar-thumb-hover: #3f3f46;
  --scrollbar-track: transparent;

  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.5);
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-full: 9999px;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  --logo-rim: #fafafa;
  --logo-glass: rgba(255, 255, 255, 0.05);
  --logo-accent: #2dd4bf;
  --logo-main: #ffffff;
  --logo-refl: #fef9c3;

  --transition: 0.15s ease;
}

/* Light Mode - Pure Minimalist Palette */
[data-theme="light"] {
  --bg-primary: #fafafa;
  --bg-secondary: #f4f4f5;
  --bg-surface: #ffffff;
  --bg-surface-hover: #f4f4f5;
  --bg-card: #ffffff;
  --bg-card-hover: #fafafa;
  
  --border-color: #e4e4e7;
  --border-subtle: #f0f0f2;
  --border-hover: #a1a1aa;
  --border-focus: #18181b;
  
  --text-primary: #09090b;
  --text-secondary: #52525b;
  --text-muted: #a1a1aa;
  
  --badge-bg: #f4f4f5;
  --badge-text: #3f3f46;
  --badge-border: #e4e4e7;

  --btn-active-bg: #09090b;
  --btn-active-text: #fafafa;

  --scrollbar-thumb: #d4d4d8;
  --scrollbar-thumb-hover: #a1a1aa;
  --scrollbar-track: transparent;

  --logo-rim: #18181b;
  --logo-glass: rgba(0, 0, 0, 0.04);
  --logo-accent: #0d9488;
  --logo-main: #18181b;
  --logo-refl: #ca8a04;

  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.08);
}

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

/* Minimalist Scrollbar UI (Firefox & Standard) */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

/* Minimalist Scrollbar UI (Webkit: Chrome, Safari, Edge) */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}

::-webkit-scrollbar-thumb {
  background-color: var(--scrollbar-thumb);
  border-radius: var(--radius-full);
  transition: background-color var(--transition);
}

::-webkit-scrollbar-thumb:hover {
  background-color: var(--scrollbar-thumb-hover);
}

::-webkit-scrollbar-corner {
  background: transparent;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  max-width: 100%;
  touch-action: pan-x pan-y;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  max-width: 100%;
  touch-action: pan-x pan-y;
  transition: background-color var(--transition), color var(--transition);
}

.main-content {
  padding-top: 3.75rem;
}

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Fixed Header - Pinned at top on scroll */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 100;
  background: rgba(12, 12, 14, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition), border-color var(--transition);
}

[data-theme="light"] .site-header {
  background: rgba(250, 250, 250, 0.92);
}

.header-inner {
  height: 3.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text-primary);
  min-width: 0;
}

.brand-icon {
  width: 2.15rem;
  height: 2.15rem;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
}

.brand-icon.small {
  width: 1.85rem;
  height: 1.85rem;
}

.brand-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.logo-rim {
  stroke: var(--logo-rim);
  transition: stroke var(--transition);
}

.logo-glass {
  fill: var(--logo-glass);
  transition: fill var(--transition);
}

.logo-accent {
  fill: var(--logo-accent);
  transition: fill var(--transition);
}

.logo-main {
  fill: var(--logo-main);
  transition: fill var(--transition);
}

.logo-refl {
  stroke: var(--logo-refl);
  transition: stroke var(--transition);
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.brand-badge {
  font-size: 0.68rem;
  font-family: var(--font-mono);
  font-weight: 500;
  background: var(--bg-secondary);
  color: var(--text-muted);
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  white-space: nowrap;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.icon-button {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  flex-shrink: 0;
}

.icon-button:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
  background: var(--bg-surface-hover);
}

.icon-button svg {
  width: 1.1rem;
  height: 1.1rem;
}

/* Theme Toggle Icons */
[data-theme="dark"] .sun-icon {
  display: block;
}
[data-theme="dark"] .moon-icon {
  display: none;
}
[data-theme="light"] .sun-icon {
  display: none;
}
[data-theme="light"] .moon-icon {
  display: block;
}

/* Hero Section */
.hero-section {
  padding: 3.5rem 0 2rem;
  text-align: center;
}

.hero-container {
  max-width: 680px;
}

.hero-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.hero-title {
  font-size: clamp(1.85rem, 5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
  line-height: 1.2;
}

.hero-subtitle {
  font-size: clamp(0.875rem, 2.5vw, 1rem);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 2rem;
  padding: 0 0.5rem;
}

/* Search Box */
.search-wrapper {
  max-width: 540px;
  width: 100%;
  margin: 0 auto 1.75rem;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.25rem 0.75rem 0.25rem 1rem;
  box-shadow: var(--shadow-card);
  transition: border-color var(--transition);
  width: 100%;
}

.search-box:focus-within {
  border-color: var(--border-focus);
}

.search-icon {
  width: 1.15rem;
  height: 1.15rem;
  color: var(--text-muted);
  flex-shrink: 0;
  margin-right: 0.65rem;
}

.search-box input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 16px; /* Prevents auto-zoom in iOS Safari */
  padding: 0.55rem 0;
  min-width: 0;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-clear {
  background: none;
  border: none;
  color: var(--text-muted);
  width: 1.5rem;
  height: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: 50%;
  margin-right: 0.4rem;
  flex-shrink: 0;
}

.search-clear:hover {
  color: var(--text-primary);
}

.search-clear svg {
  width: 0.9rem;
  height: 0.9rem;
}

.search-shortcut {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  flex-shrink: 0;
}

.kbd-key {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.15rem 0.35rem;
  border-radius: 3px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
}

/* Category Filter Pills */
.category-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem;
}

.filter-pill {
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition);
  white-space: nowrap;
  user-select: none;
}

.filter-pill:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.filter-pill.active {
  background: var(--btn-active-bg);
  border-color: var(--btn-active-bg);
  color: var(--btn-active-text);
  font-weight: 600;
}

.filter-count {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  padding: 0.05rem 0.35rem;
  border-radius: var(--radius-full);
  background: rgba(125, 125, 125, 0.15);
  color: inherit;
}

.filter-pill.active .filter-count {
  background: rgba(0, 0, 0, 0.2);
}

[data-theme="light"] .filter-pill.active .filter-count {
  background: rgba(255, 255, 255, 0.3);
}

/* Tools Section */
.tools-section {
  padding: 1.5rem 0 4.5rem;
}

.section-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border-color);
}

.section-heading {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.results-stats {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Tools Grid - Responsive Multi-Column Normal Text List */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem 2.5rem;
  padding: 0.5rem 0 2rem;
}

@media (min-width: 1200px) {
  .tools-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem 2rem;
  }
}

@media (max-width: 960px) {
  .tools-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.65rem 1.75rem;
  }
}

@media (max-width: 580px) {
  .tools-grid {
    grid-template-columns: 1fr;
    gap: 0.55rem;
  }
}

/* Tool List Link - Normal Plain Text */
.tool-list-link {
  display: block;
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--text-primary);
  text-decoration: none;
  width: fit-content;
  max-width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding: 0.2rem 0;
  transition: color 0.15s ease;
}

.tool-list-link:hover {
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1.5px;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 3rem 1.25rem;
  background: var(--bg-card);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  max-width: 440px;
  margin: 2rem auto;
}

.empty-icon {
  width: 2.5rem;
  height: 2.5rem;
  margin: 0 auto 1rem;
  color: var(--text-muted);
}

.empty-icon svg {
  width: 100%;
  height: 100%;
}

.empty-state h3 {
  font-size: 1.1rem;
  margin-bottom: 0.4rem;
}

.empty-state p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  font-size: 0.825rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
}

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

/* Minimal Toast Notification */
.toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 1000;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-hover);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 360px;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: all var(--transition);
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.toast-content {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-width: 0;
}

.toast-indicator {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-primary);
  flex-shrink: 0;
}

.toast-body {
  min-width: 0;
}

.toast-body strong {
  display: block;
  font-size: 0.825rem;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.toast-body p {
  font-size: 0.75rem;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
}

.toast-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.1rem;
  cursor: pointer;
  line-height: 1;
  flex-shrink: 0;
}

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

/* Detailed Footer Styles */
.site-footer {
  border-top: 1px solid var(--border-color);
  background: var(--bg-primary);
  padding: 3.5rem 0 2rem;
  transition: background var(--transition), border-color var(--transition);
}

.footer-content {
  display: flex;
  flex-direction: column;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.25fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-col {
  display: flex;
  flex-direction: column;
}

.footer-about .footer-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.9rem;
}

.brand-icon.small {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.brand-icon.small svg {
  width: 1rem;
  height: 1rem;
}

.footer-bio {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  max-width: 360px;
}

.footer-heading {
  font-size: 0.825rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links li a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition);
  display: inline-block;
}

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

.footer-keymap {
  margin-top: 1.5rem;
  padding: 0.75rem 0.85rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.keymap-label {
  font-size: 0.725rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
}

.keymap-keys {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Footer Bottom Bar */
.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--text-secondary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

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

.back-to-top-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-family: inherit;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
}

.back-to-top-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
  background: var(--bg-surface-hover);
}

.back-to-top-btn svg {
  width: 0.9rem;
  height: 0.9rem;
}

/* ==========================================================================
   Comprehensive Responsive Breakpoints (All Screens & Small Screens)
   ========================================================================== */

/* Tablet & Medium Screens (<= 992px) */
@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .tools-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
}

/* Tablet & Mobile Screens (<= 768px) */
@media (max-width: 768px) {
  .hero-section {
    padding: 2.75rem 0 1.5rem;
  }

  .search-shortcut {
    display: none;
  }

  .footer-bottom {
    flex-direction: row;
  }

  .site-footer {
    padding: 2.75rem 0 1.75rem;
  }
}

/* Mobile Screens (<= 640px) */
@media (max-width: 640px) {
  .main-content {
    padding-top: 3.5rem;
  }

  .container {
    padding: 0 1rem;
  }

  .header-inner {
    height: 3.5rem;
  }

  .brand-name {
    font-size: 1.05rem;
  }

  .brand-badge {
    font-size: 0.65rem;
    padding: 0.05rem 0.3rem;
  }

  .icon-button {
    width: 2rem;
    height: 2rem;
  }

  .icon-button svg {
    width: 1rem;
    height: 1rem;
  }

  .hero-section {
    padding: 2.25rem 0 1.25rem;
  }

  .category-filters {
    gap: 0.3rem;
  }

  .filter-pill {
    padding: 0.3rem 0.65rem;
    font-size: 0.775rem;
  }

  .tools-grid {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }

  .tool-card {
    padding: 1.1rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
  }

  .footer-bio {
    max-width: none;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
    align-items: center;
  }

  .toast {
    left: 1rem;
    right: 1rem;
    bottom: 1rem;
    max-width: none;
    width: calc(100% - 2rem);
  }
}

/* Extra Small Screens (<= 400px - small phones) */
@media (max-width: 400px) {
  .container {
    padding: 0 0.85rem;
  }

  .brand-badge {
    display: none; /* Hide version tag on tiny screens to avoid crowding */
  }

  .hero-badge {
    font-size: 0.7rem;
    padding: 0.2rem 0.6rem;
  }

  .filter-pill {
    padding: 0.25rem 0.55rem;
    font-size: 0.75rem;
  }

  .filter-count {
    font-size: 0.65rem;
    padding: 0 0.25rem;
  }

  .section-meta {
    flex-direction: column;
    align-items: flex-start;
  }

  .card-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.65rem;
  }

  .card-action-btn {
    align-self: flex-end;
  }
}

/* ==========================================================================
   Tool Pages Layout & Component Styles
   ========================================================================== */

.tool-page-header {
  padding: 2.25rem 0 1.5rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.825rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: 0.85rem;
  transition: color var(--transition), transform var(--transition);
}

.back-link:hover {
  color: var(--text-primary);
  transform: translateX(-2px);
}

.tool-page-title-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.tool-page-title {
  font-size: clamp(1.5rem, 4vw, 2.15rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.tool-page-desc {
  font-size: 0.925rem;
  color: var(--text-secondary);
  max-width: 720px;
  line-height: 1.55;
}

/* Tool Grid / Workspaces */
.tool-workspace {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 3.5rem;
}

.tool-workspace.single-col {
  grid-template-columns: 1fr;
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
}

.tool-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  box-shadow: var(--shadow-card);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.panel-title {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
}

.panel-actions {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
}

/* Tool Inputs & Controls */
.tool-textarea {
  width: 100%;
  min-height: 220px;
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.5;
  resize: vertical;
  outline: none;
  transition: border-color var(--transition);
}

.tool-textarea:focus {
  border-color: var(--border-focus);
}

.tool-input {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition);
}

.tool-input:focus {
  border-color: var(--border-focus);
}

.tool-select {
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.825rem;
  outline: none;
  cursor: pointer;
}

.tool-options-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 0.75rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.option-group {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.825rem;
  color: var(--text-secondary);
  cursor: pointer;
}

.option-group input[type="checkbox"],
.option-group input[type="radio"] {
  accent-color: var(--text-primary);
  cursor: pointer;
}

.panel-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Tool Buttons */
.btn-sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.775rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  transition: all var(--transition);
}

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

.btn-sm.active,
.btn-sm.btn-primary {
  background: var(--btn-active-bg);
  color: var(--btn-active-text);
  border-color: var(--btn-active-bg);
}

.btn-sm svg {
  width: 0.85rem;
  height: 0.85rem;
}

/* Dropzone */
.dropzone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 2rem 1.25rem;
  text-align: center;
  background: var(--bg-secondary);
  cursor: pointer;
  transition: all var(--transition);
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--border-focus);
  background: var(--bg-surface-hover);
}

.dropzone-icon {
  width: 2.5rem;
  height: 2.5rem;
  margin: 0 auto 0.6rem;
  color: var(--text-muted);
}

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

.dropzone-subtext {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Preview Grid for Icon Generator */
.icon-preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(115px, 1fr));
  gap: 0.65rem;
  margin-top: 0.85rem;
}

.icon-preview-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.65rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.35rem;
}

.icon-img-wrap {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.08);
  border-radius: 6px;
  overflow: hidden;
  flex-shrink: 0;
}

.icon-img-wrap img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.icon-label {
  font-size: 0.725rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
}

.icon-size-badge {
  font-size: 0.675rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Responsive Tool Layout */
@media (max-width: 820px) {
  .tool-workspace {
    grid-template-columns: 1fr;
  }
}


/* Lucide Icons Integration */
.lucide {
  width: 1rem;
  height: 1rem;
  stroke-width: 2;
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
}
.platform-nav-pill {
  display: inline-flex !important;
  align-items: center !important;
  gap: 0.45rem !important;
}
.platform-nav-pill .lucide {
  width: 0.95rem;
  height: 0.95rem;
}

.brand-nav-svg {
  width: 15px !important;
  height: 15px !important;
  max-width: 15px !important;
  max-height: 15px !important;
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0 !important;
}
.platform-nav-pill svg {
  width: 15px !important;
  height: 15px !important;
  max-width: 15px !important;
  max-height: 15px !important;
  flex-shrink: 0 !important;
}