/**
 * ToolNexx - Global Stylesheet
 * Core layout, typography, components, header, footer, modals, and tool templates
 */

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

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

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

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

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

img, svg {
  vertical-align: middle;
  max-width: 100%;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* ==========================================================================
   Layout Containers
   ========================================================================== */
.site-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.main-content {
  flex: 1 0 auto;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 4.5rem 0;
}

.section-sm {
  padding: 2.5rem 0;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3rem auto;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--primary);
  background-color: var(--primary-light);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-main);
  letter-spacing: -0.025em;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.125rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}

.site-header .container {
  max-width: 1440px;
  width: 100%;
  padding: 0 1.25rem;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 0.75rem;
  width: 100%;
}

/* Brand Logo */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.03em;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-icon {
  width: 32px;
  height: 32px;
  background: var(--primary-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 10px var(--primary-glow);
}

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

/* Desktop Navigation */
.desktop-nav {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  flex-shrink: 1;
  min-width: 0;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.45rem 0.5rem;
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
  background-color: var(--bg-subtle);
}

.nav-link svg.chevron {
  width: 12px;
  height: 12px;
  transition: transform var(--transition-fast);
}

.nav-item.dropdown-open .nav-link svg.chevron {
  transform: rotate(180deg);
}

/* Dropdown Menu */
.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 250px;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 0.65rem;
  box-shadow: var(--shadow-dropdown);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-normal);
  max-height: 80vh;
  overflow-y: auto;
}

.dropdown-menu.dropdown-wide {
  min-width: 520px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.25rem;
}

.nav-item.dropdown-open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.8rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-main);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.dropdown-item:hover {
  background-color: var(--bg-subtle);
  color: var(--primary);
  transform: translateX(3px);
}

.dropdown-item-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
  margin-left: auto;
}

/* Search Trigger Button */
.search-trigger-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.75rem;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 0.84rem;
  transition: all var(--transition-fast);
  cursor: pointer;
  flex-shrink: 0;
  white-space: nowrap;
}

.search-trigger-btn:hover {
  border-color: var(--border-focus);
  color: var(--text-main);
  background-color: var(--bg-surface);
}

.search-trigger-btn .search-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.4rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-subtle);
}

/* Theme Toggle Button */
.theme-toggle-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  transition: all var(--transition-fast);
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
}

.theme-toggle-btn:hover {
  color: var(--primary);
  border-color: var(--border-focus);
  background-color: var(--bg-surface);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--primary-glow);
}

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

.theme-toggle-btn svg {
  transition: transform 0.25s ease, color 0.2s ease;
}

.theme-toggle-btn:hover svg {
  transform: rotate(20deg) scale(1.08);
}

.theme-icon-sun {
  color: #f59e0b;
}

.theme-icon-moon {
  color: #7c3aed;
}

/* Mobile Drawer Theme Row */
.mobile-theme-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  margin-bottom: 0.75rem;
}

.mobile-theme-text-wrap {
  display: flex;
  flex-direction: column;
}

.mobile-theme-label {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-main);
}

.mobile-theme-status {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.mobile-drawer-stats {
  font-size: 0.775rem;
  color: var(--text-muted);
  text-align: center;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border-subtle);
  width: 100%;
}

/* Mobile Hamburger */
.mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

/* ==========================================================================
   Buttons & Form Controls
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.35rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #ffffff;
  box-shadow: 0 2px 6px var(--primary-glow);
}

.btn-primary:hover {
  color: #ffffff;
  filter: brightness(1.08);
  box-shadow: 0 4px 12px var(--primary-glow);
  transform: translateY(-1px);
}

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

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

.btn-outline {
  background-color: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}

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

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

.btn-success:hover {
  filter: brightness(1.1);
  color: #ffffff;
}

.btn-danger {
  background-color: var(--danger);
  color: #ffffff;
}

.btn-danger:hover {
  filter: brightness(1.1);
  color: #ffffff;
}

.btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.8125rem;
}

.btn-lg {
  padding: 0.85rem 1.85rem;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
}

.btn-icon {
  width: 38px;
  height: 38px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* Inputs & Form Elements */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.45rem;
}

.form-hint {
  font-size: 0.775rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

.form-control, .form-select {
  width: 100%;
  padding: 0.65rem 0.95rem;
  font-size: 0.9375rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus, .form-select:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--border-glow);
}

textarea.form-control {
  resize: vertical;
  min-height: 130px;
}

.input-group {
  display: flex;
  align-items: stretch;
}

.input-group .form-control {
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.input-group .btn {
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* Switch & Checkbox */
.checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-main);
  cursor: pointer;
  user-select: none;
}

.checkbox-label input[type="checkbox"] {
  accent-color: var(--primary);
  width: 17px;
  height: 17px;
  border-radius: 4px;
  cursor: pointer;
}

/* ==========================================================================
   Hero Section (Homepage)
   ========================================================================== */
.hero-section {
  position: relative;
  padding: 5rem 0 4rem 0;
  overflow: hidden;
  background: radial-gradient(circle at 50% 0%, var(--primary-light) 0%, transparent 60%);
}

.hero-content {
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.035em;
  color: var(--text-main);
  margin-bottom: 1.25rem;
}

.hero-title .gradient-text {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 680px;
  margin: 0 auto 2.25rem auto;
}

.hero-search-box {
  max-width: 580px;
  margin: 0 auto 2rem auto;
  position: relative;
}

.hero-search-input {
  width: 100%;
  padding: 1.1rem 3.5rem 1.1rem 3.25rem;
  font-size: 1.05rem;
  background-color: var(--bg-surface);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  color: var(--text-main);
  transition: all var(--transition-fast);
}

.hero-search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 8px 30px var(--primary-glow);
}

.hero-search-icon {
  position: absolute;
  left: 1.2rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3.5rem;
  flex-wrap: wrap;
}

/* Hero Floating Badges */
.floating-features {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.75rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.feature-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  box-shadow: var(--shadow-xs);
}

.feature-pill svg {
  color: var(--success);
}

/* ==========================================================================
   Tool Cards & Directory Grid
   ========================================================================== */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.tool-card {
  display: flex;
  flex-direction: column;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-normal);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--primary);
}

.tool-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.tool-card-icon {
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.tool-card:hover .tool-card-icon {
  background: var(--primary-gradient);
  color: #ffffff;
  transform: scale(1.05);
}

.tool-badge {
  font-size: 0.725rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
  background-color: var(--bg-subtle);
  color: var(--text-subtle);
}

.tool-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
  line-height: 1.35;
}

.tool-card-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 1.25rem;
  flex: 1 0 auto;
}

.tool-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--primary);
}

.tool-card-footer svg {
  transition: transform var(--transition-fast);
}

.tool-card:hover .tool-card-footer svg {
  transform: translateX(4px);
}

/* Category Filter Bar */
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.filter-btn {
  padding: 0.55rem 1.1rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
  box-shadow: 0 2px 8px var(--primary-glow);
}

/* Category Cards */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}

.category-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: all var(--transition-normal);
  text-decoration: none;
  display: flex;
  flex-direction: column;
}

.category-card:hover {
  border-color: var(--border-focus);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}

.category-card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  color: var(--primary);
  margin-bottom: 1.25rem;
}

.category-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.category-card-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 1rem;
  flex: 1 0 auto;
}

.category-tool-count {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

/* ==========================================================================
   Features, Steps & FAQ (Homepage & Tool Pages)
   ========================================================================== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.feature-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.feature-box-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background-color: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.feature-box-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.65rem;
}

.feature-box-desc {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Step Flow */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  position: relative;
}

.step-card {
  text-align: center;
  padding: 1.5rem 1rem;
}

.step-number {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-full);
  background: var(--primary-gradient);
  color: #ffffff;
  font-size: 1.15rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem auto;
  box-shadow: 0 4px 10px var(--primary-glow);
}

.step-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.step-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* FAQ Accordion */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item.active {
  border-color: var(--primary);
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  text-align: left;
  cursor: pointer;
  background: none;
}

.faq-icon {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  transition: transform var(--transition-normal);
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  padding: 0 1.5rem 1.25rem 1.5rem;
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.65;
  display: none;
}

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

/* ==========================================================================
   Tool Page Layout & Workspace
   ========================================================================== */
.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.breadcrumb-nav a {
  color: var(--text-muted);
}

.breadcrumb-nav a:hover {
  color: var(--primary);
}

.breadcrumb-sep {
  color: var(--text-subtle);
}

.tool-page-header {
  margin-bottom: 2.25rem;
}

.tool-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
  margin-bottom: 0.75rem;
  letter-spacing: -0.025em;
}

.tool-desc {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 780px;
  line-height: 1.6;
}

/* Tool Workspace Container */
.tool-workspace {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  margin-bottom: 3.5rem;
}

/* Drag & Drop Zone */
.drop-zone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.75rem 1.5rem;
  text-align: center;
  background-color: var(--bg-subtle);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

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

.drop-zone-icon {
  width: 54px;
  height: 54px;
  margin: 0 auto 1rem auto;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.drop-zone-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.45rem;
}

.drop-zone-subtitle {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

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

/* Tool Action Toolbar */
.tool-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 1.25rem 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  margin: 1.5rem 0;
}

.tool-toolbar-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* Result Statistics Bar */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.stat-card {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  text-align: center;
}

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

.stat-label {
  font-size: 0.775rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  margin-top: 0.35rem;
}

/* Code Preview Box */
.code-preview-box {
  background-color: var(--bg-code);
  color: var(--text-code);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  overflow-x: auto;
  position: relative;
  line-height: 1.6;
}

.code-copy-btn {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background-color: rgba(255, 255, 255, 0.15);
  color: #ffffff;
  padding: 0.3rem 0.65rem;
  font-size: 0.75rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: background-color var(--transition-fast);
}

.code-copy-btn:hover {
  background-color: rgba(255, 255, 255, 0.25);
}

/* Image Previews */
.preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin: 1.5rem 0;
}

.preview-card {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  text-align: center;
}

.preview-img-container {
  min-height: 180px;
  max-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: repeating-conic-gradient(#80808020 0% 25%, transparent 0% 50%) 50% / 16px 16px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 0.75rem;
}

.preview-img-container img, .preview-img-container canvas {
  max-width: 100%;
  max-height: 260px;
  object-fit: contain;
}

/* Tool Article / SEO Section */
.tool-article {
  max-width: 860px;
  margin: 0 auto;
}

.tool-article h2 {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--text-main);
  margin: 2.5rem 0 1rem 0;
  letter-spacing: -0.02em;
}

.tool-article h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 1.75rem 0 0.75rem 0;
}

.tool-article p {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}

.tool-article ul, .tool-article ol {
  margin: 0 0 1.5rem 1.5rem;
}

.tool-article li {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 0.5rem;
}

.tool-article ul li {
  list-style-type: disc;
}

.tool-article ol li {
  list-style-type: decimal;
}

/* ==========================================================================
   Global Search Modal
   ========================================================================== */
.search-modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 5rem 1.5rem 2rem 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.search-modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.search-modal-container {
  width: 100%;
  max-width: 620px;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  transform: translateY(-20px) scale(0.98);
  transition: all var(--transition-normal);
}

.search-modal-backdrop.open .search-modal-container {
  transform: translateY(0) scale(1);
}

.search-modal-header {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1.15rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.search-modal-input {
  width: 100%;
  font-size: 1.15rem;
  background: none;
  border: none;
  color: var(--text-main);
  outline: none;
}

.search-modal-results {
  max-height: 380px;
  overflow-y: auto;
  padding: 0.5rem;
}

.search-result-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-main);
  transition: all var(--transition-fast);
}

.search-result-item:hover, .search-result-item.selected {
  background-color: var(--bg-subtle);
}

.search-result-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background-color: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.search-result-info {
  flex: 1 1 auto;
}

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

.search-result-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 440px;
}

.search-modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-subtle);
  font-size: 0.775rem;
  color: var(--text-subtle);
}

/* ==========================================================================
   Toast Notification System
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.25rem;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-main);
  transform: translateY(20px);
  opacity: 0;
  transition: all var(--transition-normal);
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast-success svg {
  color: var(--success);
}

.toast-error svg {
  color: var(--danger);
}

.toast-info svg {
  color: var(--info);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  padding: 4.5rem 0 2rem 0;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1.2fr 1.2fr 1.2fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand-desc {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 1.25rem 0 1.5rem 0;
  max-width: 320px;
}

.footer-privacy-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  background-color: var(--primary-light);
  color: var(--primary);
  font-size: 0.775rem;
  font-weight: 600;
}

.footer-heading {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-main);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.875rem;
  color: var(--text-subtle);
  flex-wrap: wrap;
  gap: 1rem;
}