/* ====================
   CSS Variables & Theme
   ==================== */

:root {
  /* Light theme colors */
  --color-primary: #6366f1;
  --color-primary-dark: #4f46e5;
  --color-secondary: #8b5cf6;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-info: #06b6d4;
  --color-accent: #ec4899;
  --color-error: #ef4444;

  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-alt: #f1f5f9;
  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-border: #e2e8f0;
  --color-shadow: rgba(0, 0, 0, 0.1);
  --color-overlay: rgba(0, 0, 0, 0.5);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-mono: 'Consolas', 'Monaco', 'Courier New', monospace;
  --font-size-base: 16px;
  --font-size-sm: 14px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;

  /* Z-index layers */
  --z-dropdown: 50;
  --z-sticky: 100;
  --z-modal: 1000;
  --z-toast: 1100;
}

/* Dark theme */
[data-theme="dark"] {
  --color-bg: #0f172a;
  --color-surface: #1e293b;
  --color-surface-alt: #334155;
  --color-text: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-border: #334155;
  --color-shadow: rgba(0, 0, 0, 0.4);
  --color-overlay: rgba(0, 0, 0, 0.7);
}

/* ====================
   Reset & Base Styles
   ==================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

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

/* ====================
   Navigation Bar
   ==================== */
.tool-link {
  display: flex !important;
  align-items: center;
  text-align: center;
  justify-content: center;
}

.navbar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 1px 3px var(--color-shadow);
  transition: all var(--transition-base);
}

[data-theme="dark"] .navbar {
  background: rgba(30, 41, 59, 0.9);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 600;
  font-size: var(--font-size-lg);
}

.brand-icon {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: var(--font-size-xl);
}

.brand-name {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Navigation Menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex: 1;
  justify-content: center;
}

.nav-item {
  position: relative;
}

.nav-link {
  background: transparent;
  border: none;
  color: var(--color-text);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.nav-link:hover {
  background: var(--color-surface-alt);
  color: var(--color-primary);
}

/* Dropdown Menu */
.dropdown-content {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  min-width: 200px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px var(--color-shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base);
  z-index: var(--z-dropdown);
  padding: 0.5rem 0;
  pointer-events: none;
  /* Prevent blocking other elements when hidden */
}

/* Invisible bridge area to prevent dropdown from closing when moving mouse */
.dropdown-content::before {
  content: '';
  position: absolute;
  top: -0.75rem;
  /* Bridge the gap between trigger and dropdown */
  left: 0;
  right: 0;
  height: 0.75rem;
  background: transparent;
}

/* Wide dropdown - 2 column grid layout */
.dropdown-content.wide {
  min-width: 420px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  padding: 0.75rem;
}

.dropdown-content.wide .dropdown-divider {
  grid-column: 1 / -1;
}

.dropdown:hover .dropdown-content,
.nav-item.dropdown:hover .dropdown-content {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
  /* Enable clicks when visible */
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-text);
  text-decoration: none;
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
}

.dropdown-item:hover {
  background: var(--color-surface-alt);
  color: var(--color-primary);
}

.dropdown-item.coming-soon {
  opacity: 0.5;
  cursor: not-allowed;
}

.dropdown-divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--spacing-xs) 0;
}

.theme-toggle {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: all var(--transition-fast);
  font-size: var(--font-size-lg);
}

.theme-toggle:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px var(--color-shadow);
}

.theme-icon {
  transition: opacity var(--transition-fast);
}

[data-theme="light"] .dark-icon,
[data-theme="dark"] .light-icon {
  display: none;
}

/* Hamburger Menu */
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  z-index: 1001;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

/* Show hamburger on mobile */
@media (max-width: 1024px) {
  .hamburger-btn {
    display: flex;
  }
}

.hamburger-btn:hover {
  background: var(--color-surface-alt);
}

/* Hamburger lines - support both with and without class */
.hamburger-line,
.hamburger-btn span {
  width: 24px;
  height: 3px;
  background: var(--color-text);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  display: block;
}

.hamburger-btn.active .hamburger-line:nth-child(1),
.hamburger-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.hamburger-btn.active .hamburger-line:nth-child(2),
.hamburger-btn.active span:nth-child(2) {
  opacity: 0;
}

.hamburger-btn.active .hamburger-line:nth-child(3),
.hamburger-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* ====================
   Sidebar Navigation
   ==================== */

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 220px;
  height: 100vh;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
  overflow-x: hidden;
  z-index: 99;
  padding-top: 60px;
  padding-bottom: 2rem;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

.sidebar::-webkit-scrollbar {
  width: 4px;
}

.sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-secondary);
}

[data-theme="dark"] .sidebar {
  background: #1a1f2e;
  border-right-color: #2d3548;
}

.sidebar-inner {
  padding: 0.5rem 0;
}

/* Sidebar categories */
.sidebar-category {
  padding: 1rem 1rem 0.35rem 1rem;
}

.sidebar-category-label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 3px;
  display: inline-block;
}

/* Category color variations — inspired by jsonviewertool.com */
.cat-core {
  color: #16a34a;
  background: rgba(22, 163, 74, 0.1);
}

.cat-compare {
  color: #ea580c;
  background: rgba(234, 88, 12, 0.1);
}

.cat-transform {
  color: #2563eb;
  background: rgba(37, 99, 235, 0.1);
}

.cat-generate {
  color: #9333ea;
  background: rgba(147, 51, 234, 0.1);
}

.cat-devtools {
  color: #0891b2;
  background: rgba(8, 145, 178, 0.1);
}

.cat-api {
  color: #dc2626;
  background: rgba(220, 38, 38, 0.1);
}

.cat-web {
  color: #ca8a04;
  background: rgba(202, 138, 4, 0.1);
}

.cat-pages {
  color: #64748b;
  background: rgba(100, 116, 139, 0.1);
}

/* Dark mode category colors */
[data-theme="dark"] .cat-core {
  color: #4ade80;
  background: rgba(74, 222, 128, 0.12);
}

[data-theme="dark"] .cat-compare {
  color: #fb923c;
  background: rgba(251, 146, 60, 0.12);
}

[data-theme="dark"] .cat-transform {
  color: #60a5fa;
  background: rgba(96, 165, 250, 0.12);
}

[data-theme="dark"] .cat-generate {
  color: #c084fc;
  background: rgba(192, 132, 252, 0.12);
}

[data-theme="dark"] .cat-devtools {
  color: #22d3ee;
  background: rgba(34, 211, 238, 0.12);
}

[data-theme="dark"] .cat-api {
  color: #f87171;
  background: rgba(248, 113, 113, 0.12);
}

[data-theme="dark"] .cat-web {
  color: #facc15;
  background: rgba(250, 204, 21, 0.12);
}

[data-theme="dark"] .cat-pages {
  color: #94a3b8;
  background: rgba(148, 163, 184, 0.12);
}

/* Sidebar links */
.sidebar-link {
  display: block;
  padding: 0.4rem 1rem 0.4rem 1.25rem;
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 400;
  transition: all 0.15s ease;
  border-left: 3px solid transparent;
  line-height: 1.4;
}

.sidebar-link:hover {
  background: var(--color-surface-alt);
  color: var(--color-primary);
  border-left-color: var(--color-primary);
}

.sidebar-link.active {
  background: rgba(99, 102, 241, 0.08);
  color: var(--color-primary);
  font-weight: 600;
  border-left-color: var(--color-primary);
}

[data-theme="dark"] .sidebar-link.active {
  background: rgba(99, 102, 241, 0.15);
}

/* Sidebar toggle button in navbar */
.sidebar-toggle-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 6px 8px;
  cursor: pointer;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
  margin-left: 0.5rem;
}

.sidebar-toggle-btn:hover {
  background: var(--color-surface-alt);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

/* Hide Sidebar button */
.hide-sidebar-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 4px 12px;
  cursor: pointer;
  color: var(--color-text-secondary);
  font-size: 0.8rem;
  font-family: var(--font-family);
  font-weight: 500;
  transition: all 0.15s ease;
  margin-left: auto;
  margin-right: 0.5rem;
}

.hide-sidebar-btn:hover {
  background: var(--color-surface-alt);
  color: var(--color-primary);
}

/* Show/hide sidebar toggle vs hide button */
.sidebar-collapsed .hide-sidebar-btn {
  display: none;
}

.sidebar-collapsed .sidebar-toggle-btn {
  display: flex;
}

body:not(.sidebar-collapsed) .sidebar-toggle-btn {
  display: none;
}

body:not(.sidebar-collapsed) .hide-sidebar-btn {
  display: inline-flex;
}

/* Sidebar overlay for mobile */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(2px);
  z-index: 98;
}

/* Sidebar collapsed state */
.sidebar-collapsed .sidebar {
  transform: translateX(-100%);
}

/* Layout: sidebar + main content */
body:not(.sidebar-collapsed) .navbar {
  padding-left: 220px;
}

body:not(.sidebar-collapsed) .main-container {
  margin-left: 220px;
  max-width: calc(100% - 220px);
  width: calc(100% - 220px);
}

body:not(.sidebar-collapsed) .footer {
  margin-left: 220px;
}

/* Transition for layout shifts */
.navbar,
.main-container,
.footer {
  transition: margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    padding-left 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    max-width 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ====================
   Main Container
   ==================== */

.main-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-lg);
  width: 100%;
  flex: 1;
}

/* ====================
   Upload Section
   ==================== */

.upload-section {
  margin-bottom: var(--spacing-xl);
}

.upload-zone {
  background: var(--color-surface);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--color-primary);
  background: var(--color-surface-alt);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px var(--color-shadow);
}

.upload-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-md);
  animation: float 3s ease-in-out infinite;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

.upload-text {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
}

.upload-link {
  color: var(--color-primary);
  text-decoration: underline;
  cursor: pointer;
  font-weight: 500;
}

/* ====================
   Actions Section
   ==================== */

.actions-section {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  justify-content: center;
}

.button-group {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width var(--transition-base), height var(--transition-base);
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--color-shadow);
}

.btn:active {
  transform: translateY(0);
}

.btn-icon {
  font-size: var(--font-size-lg);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
}

.btn-secondary {
  background: linear-gradient(135deg, var(--color-secondary), #7c3aed);
  color: white;
}

.btn-success {
  background: linear-gradient(135deg, var(--color-success), #059669);
  color: white;
}

.btn-info {
  background: linear-gradient(135deg, var(--color-info), #0891b2);
  color: white;
}

.btn-warning {
  background: linear-gradient(135deg, var(--color-warning), #d97706);
  color: white;
}

.btn-accent {
  background: linear-gradient(135deg, var(--color-accent), #db2777);
  color: white;
}

/* ====================
   Editor Section
   ==================== */

.editor-section {
  margin-bottom: var(--spacing-xl);
}

.editor-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

.editor-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 12px var(--color-shadow);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.editor-panel:hover {
  box-shadow: 0 8px 24px var(--color-shadow);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--color-surface-alt);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.panel-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
}

.panel-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.btn-icon-action {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xs);
  cursor: pointer;
  color: var(--color-text-secondary);
  font-size: 20px;
  line-height: 1;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
}

.btn-icon-action:hover {
  background: var(--color-surface);
  color: var(--color-primary);
  border-color: var(--color-primary);
  transform: scale(1.1);
}

.char-count {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: 400;
}

/* Textarea Wrapper for Error Highlighting */
.textarea-wrapper {
  position: relative;
  flex: 1;
  display: flex;
}

.json-textarea {
  width: 100%;
  min-height: 500px;
  padding: var(--spacing-lg);
  border: none;
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  resize: vertical;
  transition: background var(--transition-base), color var(--transition-base);
  flex: 1;
}

.json-textarea:focus {
  outline: none;
  background: var(--color-bg);
}

.json-textarea::placeholder {
  color: var(--color-text-secondary);
  opacity: 0.6;
}

/* Error Indicator */
.error-indicator {
  position: absolute;
  left: 0;
  width: 4px;
  background: var(--color-error);
  transition: all var(--transition-base);
  pointer-events: none;
  z-index: 1;
}

.error-details {
  display: flex;
  align-items: start;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(239, 68, 68, 0.1);
  border-top: 1px solid rgba(239, 68, 68, 0.2);
  color: var(--color-error);
  font-size: var(--font-size-sm);
}

.error-icon {
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

.error-info {
  flex: 1;
}

.error-location {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.error-message {
  color: var(--color-text-secondary);
}

/* ====================
   Fullscreen Modal
   ==================== */

.fullscreen-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-overlay);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  backdrop-filter: blur(4px);
}

.fullscreen-modal.active {
  opacity: 1;
  visibility: visible;
}

.fullscreen-content {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  width: 95%;
  height: 90%;
  max-width: 1400px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  transform: scale(0.9);
  transition: transform var(--transition-base);
}

.fullscreen-modal.active .fullscreen-content {
  transform: scale(1);
}

.fullscreen-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.fullscreen-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text);
}

.close-fullscreen {
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  font-size: 32px;
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  line-height: 1;
}

.close-fullscreen:hover {
  background: var(--color-surface-alt);
  color: var(--color-error);
}

.fullscreen-body {
  flex: 1;
  overflow: auto;
  padding: var(--spacing-lg);
}

.fullscreen-output {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  color: var(--color-text);
  white-space: pre-wrap;
  word-wrap: break-word;
  margin: 0;
}

/* ====================
   Message Container
   ==================== */

.message-container {
  position: fixed;
  top: 100px;
  right: var(--spacing-lg);
  max-width: 400px;
  z-index: var(--z-toast);
}

.message {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
  box-shadow: 0 8px 24px var(--color-shadow);
  animation: slideIn var(--transition-base);
  display: flex;
  align-items: start;
  gap: var(--spacing-sm);
}

@keyframes slideIn {
  from {
    transform: translateX(400px);
    opacity: 0;
  }

  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOut {
  to {
    transform: translateX(400px);
    opacity: 0;
  }
}

.message-icon {
  font-size: var(--font-size-xl);
  flex-shrink: 0;
}

.message-content {
  flex: 1;
}

.message-title {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.message-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.message.success {
  border-left: 4px solid var(--color-success);
}

.message.error {
  border-left: 4px solid var(--color-error);
}

.message.info {
  border-left: 4px solid var(--color-info);
}

.message-close {
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: 1.5rem;
  line-height: 1;
  padding: 0;
  margin-left: auto;
  opacity: 0.6;
  transition: all 0.2s ease;
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
}

.message-close:hover {
  opacity: 1;
  background: var(--color-surface-alt);
  color: var(--color-error);
}

/* ====================
   DARK HASHNODE-STYLE FOOTER
   ==================== */

/* Footer - Light Mode (Default) */
.footer {
  background: linear-gradient(180deg, #f1f5f9 0%, #e2e8f0 100%);
  border-top: 1px solid var(--color-border);
  padding: 4rem 0 2rem;
  margin-top: 4rem;
  transition: background var(--transition-base), border-color var(--transition-base);
}

.footer .footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Main Layout: Brand Left, Links Right */
.footer .footer-main {
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: 4rem;
  margin-bottom: 3rem;
}

/* Brand Section (Left) */
.footer .footer-brand-section {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.footer .footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.footer .brand-icon {
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  color: white;
  padding: 0.4rem 0.65rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1.1rem;
}

.footer .footer-name {
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.3px;
  transition: color var(--transition-base);
}

.footer .footer-description {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0;
  max-width: 280px;
  transition: color var(--transition-base);
}

/* Social Icons */
.footer .footer-social {
  display: flex;
  gap: 0.6rem;
  margin-top: 0.5rem;
}

.footer .social-icon {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  background: transparent;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: all 200ms ease;
}

.footer .social-icon:hover {
  color: var(--color-primary);
  background: var(--color-surface-alt);
}

/* Status Indicator */
.footer .footer-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  margin-top: 0.5rem;
  width: fit-content;
  transition: background var(--transition-base), border-color var(--transition-base);
}

.footer .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
}

.footer .status-text {
  color: var(--color-text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  transition: color var(--transition-base);
}

/* Links Grid (Right) */
.footer .footer-links-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.footer .footer-column {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer .footer-heading {
  color: var(--color-text);
  font-size: 0.875rem;
  font-weight: 600;
  margin: 0 0 0.5rem 0;
  letter-spacing: 0;
  transition: color var(--transition-base);
}

.footer .footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer .footer-links li {
  margin: 0;
  padding: 0;
}

.footer .footer-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 400;
  transition: color 150ms ease;
}

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

/* Soon badge for coming soon items */
.soon-badge {
  font-size: 0.6rem;
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: white;
  padding: 0.1rem 0.35rem;
  border-radius: 0.2rem;
  font-weight: 600;
  margin-left: 0.35rem;
  text-transform: uppercase;
}

/* Footer Bottom */
.footer .footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  transition: border-color var(--transition-base);
}

.footer .footer-copyright {
  color: var(--color-text-secondary);
  font-size: 0.8rem;
  margin: 0;
  transition: color var(--transition-base);
}

.footer .footer-legal-links {
  display: flex;
  gap: 1.5rem;
}

.footer .footer-legal-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.8rem;
  transition: color 150ms ease;
}

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

/* Footer - Dark Mode Overrides */
[data-theme="dark"] .footer {
  background: var(--color-bg);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .footer .social-icon:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .footer .footer-status {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .footer .footer-links a:hover,
[data-theme="dark"] .footer .footer-legal-links a:hover {
  color: #ffffff;
}

[data-theme="dark"] .footer .footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* Responsive */
@media (max-width: 768px) {
  .footer .footer-main {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .footer .footer-links-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }

  .footer .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

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

/* ====================
   Responsive Design - Modern Minimalist Mobile
   ==================== */

@media (max-width: 1024px) {
  .editor-container {
    grid-template-columns: 1fr;
  }

  .actions-section {
    flex-direction: column;
  }

  .button-group {
    width: 100%;
    justify-content: center;
  }

  /* Sidebar responsive: on mobile, sidebar overlays content */
  body:not(.sidebar-collapsed) .navbar {
    padding-left: 0;
  }

  body:not(.sidebar-collapsed) .main-container {
    margin-left: 0;
  }

  body:not(.sidebar-collapsed) .footer {
    margin-left: 0;
  }

  .sidebar {
    width: 260px;
    z-index: 1000;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.15);
  }

  .sidebar-collapsed .sidebar {
    transform: translateX(-100%);
  }

  body:not(.sidebar-collapsed) .sidebar-overlay {
    display: block;
  }

  body:not(.sidebar-collapsed) .sidebar-toggle-btn {
    display: none;
  }

  /* Start collapsed on mobile by default */
  .sidebar-toggle-btn {
    display: flex;
  }
}

@media (max-width: 768px) {
  .main-container {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .nav-brand {
    font-size: var(--font-size-base);
  }

  .brand-name {
    display: none;
  }

  .btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
  }

  .json-textarea {
    min-height: 350px;
    font-size: 13px;
  }

  .message-container {
    left: var(--spacing-md);
    right: var(--spacing-md);
    max-width: none;
  }

  .fullscreen-content {
    width: 100%;
    height: 100%;
    border-radius: 0;
  }

  .footer-content {
    gap: var(--spacing-md);
  }

  .footer-links {
    gap: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .button-group {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .upload-zone {
    padding: var(--spacing-lg);
  }

  .upload-icon {
    font-size: 32px;
  }

  .json-textarea {
    min-height: 300px;
  }

  .panel-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }

  .panel-actions {
    width: 100%;
    justify-content: space-between;
  }
}

/* ====================
   Loading State
   ==================== */

.btn.loading {
  opacity: 0.7;
  pointer-events: none;
  position: relative;
}

.btn.loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin-left: -8px;
  margin-top: -8px;
  border: 2px solid transparent;
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* ====================
   Accessibility
   ==================== */

.btn:focus-visible,
.json-textarea:focus-visible,
.theme-toggle:focus-visible,
.nav-link:focus-visible,
.close-fullscreen:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {

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

/* ====================
   PREMIUM HOMEPAGE REDESIGN
   Modern Glassmorphism UI
   ==================== */

/* Enhanced Variables */
:root {
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  --glass-hover-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
  --backdrop-blur: blur(20px);
}

[data-theme="dark"] {
  --glass-bg: rgba(30, 30, 30, 0.85);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --glass-hover-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
  --color-bg: #1a1a1a;
  --color-surface: #252525;
  --color-surface-alt: #2a2a2a;
  --color-text: #e5e5e5;
  --color-text-secondary: #a0a0a0;
  --color-border: rgba(255, 255, 255, 0.1);
}

/* ====================
   PREMIUM HEADER
   ==================== */

.header {
  text-align: center;
  margin-bottom: 4rem;
  padding: 4rem 2rem;
  background: linear-gradient(135deg,
      rgba(99, 102, 241, 0.08) 0%,
      rgba(139, 92, 246, 0.08) 50%,
      rgba(236, 72, 153, 0.08) 100%);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}

.header::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
  animation: headerGlow 8s ease-in-out infinite;
  pointer-events: none;
}

@keyframes headerGlow {

  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }

  50% {
    transform: translate(10%, 10%) scale(1.1);
  }
}

.header-title {
  font-size: 3.5rem;
  font-weight: 800;
  background: linear-gradient(135deg,
      #6366f1 0%,
      #8b5cf6 40%,
      #ec4899 80%,
      #f43f5e 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1.25rem;
  letter-spacing: -1px;
  position: relative;
  z-index: 1;
  text-shadow: 0 4px 20px rgba(99, 102, 241, 0.15);
}

.header-subtitle {
  font-size: 1.35rem;
  color: var(--color-text-secondary);
  font-weight: 500;
  letter-spacing: 0.3px;
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
}

/* ====================
   GLASSMORPHISM DRAG & DROP
   ==================== */

.upload-zone {
  border: 3px dashed transparent;
  border-radius: var(--radius-xl);
  padding: 4rem 3rem;
  margin-bottom: 3rem;
  text-align: center;
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: all 400ms cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--glass-shadow);
}

.upload-zone::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-xl);
  padding: 3px;
  background: linear-gradient(135deg,
      rgba(99, 102, 241, 0.5) 0%,
      rgba(139, 92, 246, 0.5) 50%,
      rgba(236, 72, 153, 0.5) 100%);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  opacity: 1;
  transition: opacity 400ms ease;
}

.upload-zone:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: var(--glass-hover-shadow);
}

.upload-zone:hover::before {
  opacity: 1;
  animation: borderGlow 2s ease-in-out infinite;
}

@keyframes borderGlow {

  0%,
  100% {
    opacity: 0.5;
  }

  50% {
    opacity: 1;
  }
}

.upload-zone.dragover {
  background: linear-gradient(135deg,
      rgba(99, 102, 241, 0.15) 0%,
      rgba(139, 92, 246, 0.15) 100%);
  transform: scale(1.02);
}

.upload-icon {
  font-size: 4.5rem;
  margin-bottom: 1.5rem;
  filter: drop-shadow(0 4px 12px rgba(99, 102, 241, 0.25));
  transition: transform 300ms ease;
}

.upload-zone:hover .upload-icon {
  transform: scale(1.1) rotate(5deg);
}

.upload-text {
  font-size: 1.25rem;
  color: var(--color-text);
  font-weight: 500;
  margin: 0;
}

.browse-link {
  color: var(--color-primary);
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  position: relative;
  transition: color var(--transition-fast);
}

.browse-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(1);
  transition: transform var(--transition-fast);
}

.browse-link:hover {
  color: var(--color-accent);
}

.browse-link:hover::after {
  transform: scaleX(1.1);
}

/* ====================
   PREMIUM BUTTON TOOLBAR - HIDDEN (Replaced by center actions)
   ==================== */

.actions-section {
  display: none;
  /* Hidden - replaced by center-actions */
}

/* ====================
   3-COLUMN EDITOR LAYOUT WITH CENTER BUTTONS
   ==================== */

.editor-wrapper {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
  align-items: stretch;
}

/* Center Actions - Buttons in the middle */
.center-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1rem 0;
  justify-content: flex-start;
  align-items: center;
  min-width: 140px;
}

.center-btn {
  width: 100%;
  padding: 0.75rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 250ms cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
}

.center-btn:hover {
  background: var(--color-surface-alt);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateX(2px);
  box-shadow: 0 2px 8px var(--color-shadow);
}

.center-btn:active {
  transform: scale(0.98);
}

/* Dark Mode - Center Buttons */
[data-theme="dark"] .center-btn {
  background: rgba(30, 41, 59, 0.8);
  border-color: rgba(255, 255, 255, 0.15);
  color: #e2e8f0;
}

[data-theme="dark"] .center-btn:hover {
  background: rgba(99, 102, 241, 0.15);
  border-color: rgba(99, 102, 241, 0.5);
  color: #a5b4fc;
}

/* Secondary Actions Section */
.secondary-actions-section {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3rem;
  padding: 1.5rem;
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
}

/* Button Styles for Secondary Actions */
.btn {
  padding: 0.875rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  position: relative;
  overflow: hidden;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.18);
}

.btn:active {
  transform: translateY(0) scale(0.98);
}

.btn-icon {
  font-size: 1.1rem;
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1 0%, #5558DD 100%);
  color: white;
}

.btn-success {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: white;
}

.btn-warning {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: white;
}

/* ====================
   PREMIUM CODE EDITORS
   ==================== */

.editor-container {
  display: none;
  /* Hidden - replaced by editor-wrapper */
}

.editor-panel {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  transition: all 400ms cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 16px var(--color-shadow);
  overflow: hidden;
}

/* Dark mode editor panel */
[data-theme="dark"] .editor-panel {
  background: rgba(15, 23, 42, 0.9);
  border-color: rgba(255, 255, 255, 0.1);
}

.editor-panel:hover {
  box-shadow: 0 8px 24px var(--color-shadow);
  border-color: rgba(99, 102, 241, 0.3);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  background: var(--color-surface-alt);
  border-bottom: 1px solid var(--color-border);
}

[data-theme="dark"] .panel-header {
  background: rgba(30, 41, 59, 0.7);
  border-bottom-color: rgba(255, 255, 255, 0.08);
}

.panel-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}

.panel-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.editor-textarea {
  width: 100%;
  min-height: 450px;
  flex: 1;
  padding: 1.25rem;
  font-family: 'SF Mono', 'Monaco', 'Consolas', 'Courier New', monospace;
  font-size: 0.9rem;
  line-height: 1.7;
  background: var(--color-bg);
  color: var(--color-text);
  border: none;
  resize: vertical;
  transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark mode textarea */
[data-theme="dark"] .editor-textarea {
  background: rgba(10, 15, 26, 0.95);
  color: #e2e8f0;
}

.editor-textarea:focus {
  outline: none;
  background: var(--color-surface);
}

[data-theme="dark"] .editor-textarea:focus {
  background: rgba(15, 23, 42, 0.95);
}

.editor-textarea::placeholder {
  color: var(--color-text-secondary);
  opacity: 0.5;
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.icon-btn:hover {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

/* ====================
   RESPONSIVE - 3 COLUMN LAYOUT
   ==================== */

@media (max-width: 1024px) {
  .editor-wrapper {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .center-actions {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    order: -1;
    padding: 1rem;
    background: var(--glass-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
  }

  .center-btn {
    flex: 0 0 auto;
    width: auto;
    padding: 0.65rem 1rem;
    font-size: 0.9rem;
  }
}

@media (max-width: 768px) {
  .center-actions {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }

  .center-btn {
    width: 100%;
  }

  .secondary-actions-section {
    padding: 1rem;
  }

  .editor-textarea {
    min-height: 350px;
  }
}

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

/* ====================
   SEO CONTENT - ENHANCED
   ==================== */

.seo-content {
  margin-top: 6rem;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.content-section {
  margin-bottom: 4rem;
  padding: 3.5rem 3rem;
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border-radius: var(--radius-xl);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  transition: all 400ms ease;
}

.content-section:hover {
  box-shadow: var(--glass-hover-shadow);
}

.content-section h2 {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 2rem;
  color: var(--color-text);
  position: relative;
  padding-bottom: 1.25rem;
}

.content-section h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100px;
  height: 5px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 3px;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.content-section p {
  font-size: 1.125rem;
  line-height: 1.9;
  color: var(--color-text-secondary);
}

/* Enhanced Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
  margin: 3.5rem 0;
}

.feature-card {
  padding: 3rem 2.5rem;
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border-radius: var(--radius-xl);
  border: 1px solid var(--glass-border);
  transition: all 400ms cubic-bezier(0.4, 0, 0.2, 1);
  text-align: center;
  box-shadow: var(--glass-shadow);
}

.feature-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--glass-hover-shadow);
  border-color: rgba(99, 102, 241, 0.4);
}

.feature-icon {
  font-size: 4rem;
  margin-bottom: 1.75rem;
  display: block;
  filter: drop-shadow(0 4px 12px rgba(99, 102, 241, 0.35));
  transition: transform 300ms ease;
}

.feature-card:hover .feature-icon {
  transform: scale(1.15) rotate(5deg);
}

.feature-card h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  color: var(--color-text);
}

.feature-card p {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

/* Benefits List - Enhanced */
.benefits-list {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 2rem;
  margin-top: 2.5rem;
}

.benefits-list li {
  padding: 2rem;
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border-radius: var(--radius-lg);
  border-left: 5px solid var(--color-primary);
  transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--glass-shadow);
}

.benefits-list li:hover {
  transform: translateX(8px);
  box-shadow: var(--glass-hover-shadow);
  border-left-color: var(--color-accent);
}

.benefits-list strong {
  color: var(--color-primary);
  font-weight: 700;
  font-size: 1.1rem;
  display: block;
  margin-bottom: 0.5rem;
}

/* Use Cases - Enhanced */
.use-cases {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
  margin-top: 2.5rem;
}

.use-case {
  padding: 2.5rem;
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  transition: all 400ms cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--glass-shadow);
}

.use-case:hover {
  transform: scale(1.05);
  box-shadow: var(--glass-hover-shadow);
  border-color: rgba(139, 92, 246, 0.4);
}

.use-case h4 {
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  color: var(--color-text);
}

.use-case p {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* FAQ Section - Enhanced */
.faq-section {
  background: linear-gradient(135deg,
      rgba(99, 102, 241, 0.05) 0%,
      rgba(139, 92, 246, 0.05) 100%);
}

.faq-item {
  margin-bottom: 2.5rem;
  padding: 2.5rem;
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  transition: all 400ms cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--glass-shadow);
}

.faq-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--glass-hover-shadow);
  transform: translateY(-2px);
}

.faq-item:last-child {
  margin-bottom: 0;
}

.faq-item h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 1rem;
}

.faq-item h3::before {
  content: '❓';
  font-size: 2rem;
  filter: drop-shadow(0 2px 4px rgba(99, 102, 241, 0.3));
}

.faq-item p {
  font-size: 1.1rem;
  line-height: 1.9;
  color: var(--color-text-secondary);
  padding-left: 3rem;
}

/* ====================
   RESPONSIVE - MOBILE PREMIUM
   ==================== */

@media (max-width: 768px) {
  .header {
    padding: 3rem 1.5rem;
    margin-bottom: 3rem;
  }

  .header-title {
    font-size: 2.5rem;
    letter-spacing: -0.5px;
  }

  .header-subtitle {
    font-size: 1.1rem;
  }

  .upload-zone {
    padding: 3rem 2rem;
    margin-bottom: 2.5rem;
  }

  .upload-icon {
    font-size: 3.5rem;
  }

  .upload-text {
    font-size: 1.1rem;
  }

  .actions-section {
    padding: 2rem 1.5rem;
  }

  .button-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  .btn {
    padding: 0.875rem 1.25rem;
    font-size: 0.95rem;
    justify-content: center;
  }

  .editor-container {
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
  }

  .editor-panel {
    padding: 1.5rem;
  }

  .editor-textarea {
    min-height: 400px;
    padding: 1.25rem;
    font-size: 0.95rem;
  }

  .content-section {
    padding: 2.5rem 2rem;
    margin-bottom: 3rem;
  }

  .content-section h2 {
    font-size: 1.85rem;
  }

  .features-grid,
  .use-cases {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .benefits-list {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .feature-card,
  .use-case {
    padding: 2rem 1.75rem;
  }

  .faq-item {
    padding: 2rem 1.5rem;
  }

  .faq-item p {
    padding-left: 2rem;
  }
}

@media (max-width: 480px) {
  .header-title {
    font-size: 2rem;
  }

  .header-subtitle {
    font-size: 1rem;
  }

  .button-group {
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
  }
}

/* ====================
   HOW-TO STEPS SECTION
   ==================== */

.how-to-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.step-card {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  padding: 2rem;
  text-align: center;
  transition: all 300ms ease;
  position: relative;
}

.step-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--glass-hover-shadow);
  border-color: var(--color-primary);
}

.step-number {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto 1rem;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.step-card h4 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.step-card p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ====================
   RELATED TOOLS GRID
   ==================== */

.related-tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.tool-link-card {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  padding: 1.5rem;
  text-decoration: none;
  transition: all 300ms ease;
  display: block;
}

.tool-link-card:hover {
  transform: translateY(-5px) scale(1.02);
  box-shadow: var(--glass-hover-shadow);
  border-color: var(--color-primary);
}

.tool-icon {
  font-size: 2.5rem;
  display: block;
}

.tool-link-card h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.tool-link-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin: 0;
}

/* ====================
   TRUST SIGNALS SECTION
   ==================== */

.trust-section {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(236, 72, 153, 0.08) 100%);
}

.trust-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.stat-card {
  text-align: center;
  padding: 2rem 1rem;
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 1rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.trust-badges .badge {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  color: var(--color-text);
  font-weight: 500;
  transition: all 300ms ease;
}

.trust-badges .badge:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

/* ====================
   COMPARISON TABLE
   ==================== */

.comparison-table-wrapper {
  overflow-x: auto;
  margin-top: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  min-width: 600px;
}

.comparison-table th,
.comparison-table td {
  padding: 1rem 1.25rem;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
}

.comparison-table th {
  background: var(--color-surface-alt);
  font-weight: 600;
  color: var(--color-text);
  font-size: 0.95rem;
}

.comparison-table th:first-child,
.comparison-table td:first-child {
  text-align: left;
  font-weight: 500;
}

.comparison-table tbody tr:hover {
  background: var(--color-surface-alt);
}

.comparison-table td.yes {
  color: #10b981;
  font-size: 1.25rem;
}

.comparison-table td.no {
  color: #ef4444;
  font-size: 1.25rem;
}

.comparison-table td.partial {
  color: #f59e0b;
  font-size: 1rem;
}

/* FAQ Internal Links */
.faq-item a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
  transition: color 200ms ease;
}

.faq-item a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

/* ====================
   RESPONSIVE - NEW SECTIONS
   ==================== */

@media (max-width: 768px) {
  .how-to-steps {
    grid-template-columns: 1fr 1fr;
  }

  .stat-number {
    font-size: 2rem;
  }

  .trust-badges {
    flex-direction: column;
    align-items: center;
  }

  .trust-badges .badge {
    width: 100%;
    text-align: center;
  }
}

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

  .trust-stats {
    grid-template-columns: repeat(2, 1fr);
  }

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

/* ====================
   Fullscreen Modal Styles
   ==================== */

.fullscreen-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  opacity: 0;
  transition: opacity 300ms ease;
}

.fullscreen-modal.active {
  display: flex;
  opacity: 1;
}

.fullscreen-content {
  width: 90%;
  max-width: 1200px;
  height: 90%;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 4.5rem 2rem 2rem;
  position: relative;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* Action buttons container */
.fullscreen-actions {
  position: absolute;
  top: 1rem;
  right: 1rem;
  display: flex;
  gap: 0.75rem;
  z-index: 10001;
}

/* Copy button */
.copy-fullscreen {
  background: rgba(99, 102, 241, 0.2);
  color: #6366f1;
  border: 1px solid rgba(99, 102, 241, 0.3);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 1.25rem;
  cursor: pointer;
  transition: all 300ms ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.copy-fullscreen:hover {
  background: #6366f1;
  color: white;
  transform: scale(1.1);
}

[data-theme="dark"] .copy-fullscreen {
  background: rgba(139, 92, 246, 0.2);
  color: #8b5cf6;
  border-color: rgba(139, 92, 246, 0.3);
}

[data-theme="dark"] .copy-fullscreen:hover {
  background: #8b5cf6;
  color: white;
}

/* Close button */
.close-fullscreen {
  background: rgba(239, 68, 68, 0.2);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.3);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
  transition: all 300ms ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.close-fullscreen:hover {
  background: #ef4444;
  color: white;
  transform: rotate(90deg);
}

/* Scrollable output */
.fullscreen-output {
  font-family: 'SF Mono', 'Monaco', 'Consolas', 'Courier New', monospace;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text);
  white-space: pre-wrap;
  word-wrap: break-word;
  margin: 0;
  padding: 1.5rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 8px;
  overflow-y: auto;
  overflow-x: auto;
  flex: 1;
  min-height: 0;
}

/* Custom scrollbar for fullscreen output */
.fullscreen-output::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

.fullscreen-output::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 6px;
}

.fullscreen-output::-webkit-scrollbar-thumb {
  background: rgba(99, 102, 241, 0.5);
  border-radius: 6px;
  border: 2px solid transparent;
  background-clip: padding-box;
}

.fullscreen-output::-webkit-scrollbar-thumb:hover {
  background: rgba(99, 102, 241, 0.7);
  background-clip: padding-box;
}

[data-theme="dark"] .fullscreen-output::-webkit-scrollbar-thumb {
  background: rgba(139, 92, 246, 0.5);
  background-clip: padding-box;
}

[data-theme="dark"] .fullscreen-output::-webkit-scrollbar-thumb:hover {
  background: rgba(139, 92, 246, 0.7);
  background-clip: padding-box;
}

/* Mobile responsive */
@media (max-width: 768px) {
  .fullscreen-content {
    width: 95%;
    height: 95%;
    padding: 4rem 1rem 1rem;
  }

  .fullscreen-output {
    font-size: 0.85rem;
    padding: 1rem;
  }

  .fullscreen-actions {
    gap: 0.5rem;
  }

  .copy-fullscreen,
  .close-fullscreen {
    width: 36px;
    height: 36px;
    font-size: 1.1rem;
  }
}