/* ==========================================================================
   SmartToolkit Design System
   Modern Glassmorphism, Dual Theme (Dark Default), WCAG AA Accessible
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Space+Grotesk:wght@500;600;700&display=swap');

:root {
  --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Accent Gradient */
  --accent-cyan: #22d3ee;
  --accent-purple: #8b5cf6;
  --accent-pink: #ec4899;
  --gradient-accent: linear-gradient(135deg, #22d3ee 0%, #8b5cf6 50%, #ec4899 100%);
  --gradient-accent-hover: linear-gradient(135deg, #38bdf8 0%, #a855f7 50%, #f472b6 100%);

  /* Dark Theme (Default) */
  --bg-main: #0b0f1a;
  --bg-surface: rgba(17, 24, 39, 0.75);
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-card-solid: #111827;
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --bg-surface-elevated: #1e293b;
  --bg-input: #0f172a;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --border-card: rgba(255, 255, 255, 0.08);
  --border-card-hover: rgba(139, 92, 246, 0.35);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glass-glow: rgba(139, 92, 246, 0.35);
  --border-input: #334155;
  --header-bg: rgba(11, 15, 26, 0.82);
  --glow-primary: 0 0 24px rgba(139, 92, 246, 0.35);
  --glow-cyan: 0 0 20px rgba(34, 211, 238, 0.28);
  --grid-color: rgba(255, 255, 255, 0.025);
  --code-bg: #030712;
  --badge-popular-bg: rgba(236, 72, 153, 0.15);
  --badge-popular-text: #f472b6;
  --badge-new-bg: rgba(34, 211, 238, 0.15);
  --badge-new-text: #38bdf8;
  --ad-slot-bg: rgba(15, 23, 42, 0.6);

  /* Radius & Transitions */
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;

  /* Alert Colors */
  --alert-error: #ef4444;
  --alert-error-bg: rgba(239, 68, 68, 0.12);
  --alert-info: #06b6d4;
  --alert-info-bg: rgba(6, 182, 212, 0.12);
  --alert-warning: #f59e0b;
  --alert-warning-bg: rgba(245, 158, 11, 0.12);
  --alert-success: #10b981;
  --alert-success-bg: rgba(16, 185, 129, 0.12);
}

[data-theme="light"] {
  --bg-main: #f8fafc;
  --bg-surface: rgba(255, 255, 255, 0.88);
  --bg-card: rgba(255, 255, 255, 0.88);
  --bg-card-solid: #ffffff;
  --bg-card-hover: rgba(241, 245, 249, 0.95);
  --bg-surface-elevated: #f1f5f9;
  --bg-input: #ffffff;
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #64748b;
  --border-card: rgba(0, 0, 0, 0.08);
  --border-card-hover: rgba(139, 92, 246, 0.4);
  --border-glass: rgba(0, 0, 0, 0.08);
  --border-glass-glow: rgba(139, 92, 246, 0.4);
  --border-input: #cbd5e1;
  --header-bg: rgba(248, 250, 252, 0.86);
  --glow-primary: 0 4px 20px rgba(139, 92, 246, 0.18);
  --glow-cyan: 0 4px 18px rgba(34, 211, 238, 0.15);
  --grid-color: rgba(0, 0, 0, 0.03);
  --code-bg: #f1f5f9;
  --badge-popular-bg: rgba(236, 72, 153, 0.12);
  --badge-popular-text: #db2777;
  --badge-new-bg: rgba(14, 165, 233, 0.12);
  --badge-new-text: #0284c7;
  --ad-slot-bg: rgba(241, 245, 249, 0.8);

  /* Alert Colors */
  --alert-error: #dc2626;
  --alert-error-bg: rgba(220, 38, 38, 0.08);
  --alert-info: #0891b2;
  --alert-info-bg: rgba(8, 145, 178, 0.08);
  --alert-warning: #d97706;
  --alert-warning-bg: rgba(217, 119, 6, 0.08);
  --alert-success: #059669;
  --alert-success-bg: rgba(5, 150, 105, 0.08);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 85px;
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
  transition: background-color 0.25s ease, color 0.25s ease;
}

/* Background Gradients & Grid */
.bg-decorations {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  max-width: 100vw;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
  contain: strict;
}

.bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.22;
  will-change: transform;
}

.bg-orb-1 {
  top: -100px;
  left: -50px;
  width: 500px;
  height: 500px;
  background: var(--accent-cyan);
}

.bg-orb-2 {
  top: 30%;
  right: -100px;
  width: 600px;
  height: 600px;
  background: var(--accent-purple);
}

.bg-orb-3 {
  bottom: 5%;
  left: 20%;
  width: 450px;
  height: 450px;
  background: var(--accent-pink);
  opacity: 0.16;
}

.bg-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(to right, var(--grid-color) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-color) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-main);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2rem, 4vw + 1rem, 3.25rem); }
h2 { font-size: clamp(1.5rem, 2.5vw + 0.5rem, 2.25rem); }
h3 { font-size: clamp(1.2rem, 1.8vw + 0.3rem, 1.5rem); }
h4 { font-size: 1.15rem; }

p {
  color: var(--text-muted);
  font-size: 1rem;
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color 0.15s ease, opacity 0.15s ease;
}

a:hover {
  color: var(--accent-purple);
}

.gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Layout Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.container-narrow {
  max-width: 860px;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--header-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-card);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 1.5rem;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--text-main);
}

.brand-logo-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 1.75rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.15s ease;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-main);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Theme Toggle Button */
.theme-toggle-btn {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-card);
  color: var(--text-main);
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.theme-toggle-btn:hover {
  border-color: var(--border-card-hover);
  transform: translateY(-1px);
}

.mobile-menu-toggle {
  display: none;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-card);
  color: var(--text-main);
  width: 40px;
  height: 40px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

/* Glassmorphism Cards */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-card);
  border-radius: 16px;
  padding: 1.75rem;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.glass-card-interactive {
  cursor: pointer;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.75rem 1.4rem;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  line-height: 1;
}

.btn-primary {
  background: var(--gradient-accent);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
  background: var(--gradient-accent-hover);
  color: #ffffff;
  box-shadow: var(--glow-primary);
  transform: translateY(-2px);
}

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

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-card-hover);
  color: var(--text-main);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-card);
}

.btn-outline:hover {
  border-color: var(--accent-purple);
  color: var(--accent-cyan);
}

.btn-sm {
  padding: 0.45rem 0.9rem;
  font-size: 0.85rem;
  border-radius: 8px;
}

/* Hero Section */
.hero-section {
  padding: 4.5rem 0 3rem;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-purple);
  margin-bottom: 1.5rem;
}

.hero-title {
  max-width: 880px;
  margin: 0 auto 1.25rem;
}

.hero-subtitle {
  max-width: 680px;
  margin: 0 auto 2.25rem;
  font-size: 1.15rem;
}

/* Search Box */
.search-container {
  max-width: 620px;
  margin: 0 auto 2rem;
  position: relative;
}

.search-input-wrapper {
  display: flex;
  align-items: center;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-card);
  border-radius: 14px;
  padding: 0.5rem 1rem;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.search-input-wrapper:focus-within {
  border-color: var(--accent-purple);
  box-shadow: var(--glow-primary);
}

.search-icon {
  width: 20px;
  height: 20px;
  color: var(--text-dim);
  margin-right: 0.75rem;
  flex-shrink: 0;
}

.search-input {
  width: 100%;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 1rem;
  outline: none;
  font-family: var(--font-sans);
}

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

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

.chip {
  padding: 0.45rem 1rem;
  border-radius: 9999px;
  font-size: 0.88rem;
  font-weight: 500;
  background: var(--bg-card);
  color: var(--text-muted);
  border: 1px solid var(--border-card);
  cursor: pointer;
  transition: all 0.15s ease;
}

.chip:hover {
  color: var(--text-main);
  border-color: var(--border-card-hover);
}

.chip.active {
  background: var(--gradient-accent);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 2px 10px rgba(139, 92, 246, 0.3);
}

/* Tools Grid */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3.5rem;
}

.tool-card {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
}

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

.tool-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  transition: transform 0.2s ease;
}

.tool-card:hover .tool-icon-wrapper {
  transform: scale(1.08);
  color: #ffffff;
  background: var(--gradient-accent);
}

.badge {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.55rem;
  border-radius: 6px;
}

.badge-popular {
  background: var(--badge-popular-bg);
  color: var(--badge-popular-text);
  border: 1px solid rgba(236, 72, 153, 0.25);
}

.badge-new {
  background: var(--badge-new-bg);
  color: var(--badge-new-text);
  border: 1px solid rgba(34, 211, 238, 0.25);
}

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

.tool-card-desc {
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-muted);
  flex-grow: 1;
  margin-bottom: 1.25rem;
}

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

/* Trust / Feature Section */
.trust-section {
  padding: 4rem 0;
  border-top: 1px solid var(--border-card);
  border-bottom: 1px solid var(--border-card);
  margin-bottom: 4rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.75rem;
}

.feature-box {
  text-align: left;
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(34, 211, 238, 0.12);
  border: 1px solid rgba(34, 211, 238, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  margin-bottom: 1rem;
}

/* Tool View Page Elements */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--text-dim);
  margin: 1.5rem 0 1.25rem;
}

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

.breadcrumb a:hover {
  color: var(--accent-cyan);
}

.tool-workspace {
  margin-bottom: 3rem;
}

.tool-interface {
  margin: 2rem 0;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--border-input);
  background: var(--bg-input);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

textarea.form-control {
  resize: vertical;
  min-height: 140px;
}

.form-control:focus {
  border-color: var(--accent-purple);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.tool-output-box {
  background: var(--bg-input);
  border: 1px solid var(--border-card);
  border-radius: 12px;
  padding: 1.25rem;
  margin-top: 1.5rem;
  position: relative;
}

.tool-output-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.tool-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}

.stat-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-card);
  border-radius: 10px;
  padding: 0.85rem;
  text-align: center;
}

.stat-value {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 0.2rem;
}

.alert {
  padding: 0.85rem 1.15rem;
  border-radius: 10px;
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.alert-info {
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.25);
  color: var(--text-main);
}

.alert-warning {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.25);
  color: #fbbf24;
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.25);
  color: #f87171;
}

/* FAQ Accordion */
.faq-section {
  margin: 3.5rem 0;
}

.accordion {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-top: 1.5rem;
}

.accordion-item {
  border: 1px solid var(--border-card);
  border-radius: 12px;
  background: var(--bg-card);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.accordion-item:hover {
  border-color: var(--border-card-hover);
}

.accordion-trigger {
  width: 100%;
  padding: 1.15rem 1.35rem;
  text-align: left;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.accordion-icon {
  width: 20px;
  height: 20px;
  transition: transform 0.2s ease;
  color: var(--text-dim);
  flex-shrink: 0;
}

.accordion-item.open .accordion-icon {
  transform: rotate(180deg);
  color: var(--accent-cyan);
}

.accordion-content {
  display: none;
  padding: 0 1.35rem 1.25rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.accordion-item.open .accordion-content {
  display: block;
}

/* Blog Styles */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.75rem;
  margin-bottom: 3.5rem;
}

.blog-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  padding: 0;
}

.blog-card-image-wrap {
  width: 100%;
  height: 200px;
  background: var(--bg-surface-elevated);
  position: relative;
  overflow: hidden;
  border-top-left-radius: 16px;
  border-top-right-radius: 16px;
}

.blog-card-image-wrap img, .blog-card-image-wrap svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.blog-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 0.65rem;
}

.blog-card-title {
  font-size: 1.25rem;
  margin-bottom: 0.65rem;
  color: var(--text-main);
  line-height: 1.35;
}

.blog-card-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  flex-grow: 1;
  margin-bottom: 1.25rem;
}

/* Blog Article Layout */
.article-container {
  max-width: 820px;
  margin: 0 auto;
  padding: 2.5rem 0 4rem;
}

.article-header {
  margin-bottom: 2.5rem;
}

.article-title {
  margin: 1rem 0 1rem;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: 0.88rem;
  color: var(--text-dim);
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-card);
}

.article-cover {
  width: 100%;
  height: auto;
  border-radius: 16px;
  margin-bottom: 2.5rem;
  border: 1px solid var(--border-card);
}

.toc-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 14px;
  padding: 1.25rem 1.5rem;
  margin: 1.75rem 0 2.5rem;
}

.toc-title {
  font-size: 1.05rem;
  font-family: var(--font-heading);
  margin-bottom: 0.75rem;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.toc-list a {
  font-size: 0.92rem;
  color: var(--text-muted);
}

.toc-list a:hover {
  color: var(--accent-cyan);
}

.article-content {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-muted);
}

.article-content h2 {
  margin: 2.25rem 0 1rem;
  color: var(--text-main);
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--border-card);
}

.article-content h3 {
  margin: 1.75rem 0 0.75rem;
  color: var(--text-main);
}

.article-content p {
  margin-bottom: 1.35rem;
}

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

.article-content li {
  margin-bottom: 0.4rem;
}

.article-content blockquote {
  border-left: 3px solid var(--accent-purple);
  padding-left: 1.25rem;
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--text-main);
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.75rem 0;
  font-size: 0.95rem;
}

.article-content th, .article-content td {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-card);
  text-align: left;
}

.article-content th {
  background: var(--bg-surface-elevated);
  color: var(--text-main);
  font-weight: 600;
}

.tool-cta-box {
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.08) 0%, rgba(139, 92, 246, 0.12) 100%);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: 14px;
  padding: 1.5rem;
  margin: 2.25rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.author-box {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 14px;
  padding: 1.5rem;
  margin-top: 3.5rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.author-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 1.4rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* AdSense Ad Container Slots */
.ad-slot-container {
  margin: 2.5rem 0;
  background: var(--ad-slot-bg);
  border: 1px dashed var(--border-card);
  border-radius: 12px;
  padding: 1rem;
  text-align: center;
  min-height: 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.ad-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
  user-select: none;
}

.ad-slot-leaderboard {
  min-height: 110px;
}

.ad-slot-rectangle {
  min-height: 280px;
  max-width: 360px;
  margin-left: auto;
  margin-right: auto;
}

/* Cookie Consent Banner */
.cookie-banner {
  position: fixed;
  bottom: 1.5rem;
  left: 1.5rem;
  right: 1.5rem;
  max-width: 580px;
  margin: 0 auto;
  background: var(--bg-card-solid);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-card-hover);
  border-radius: 16px;
  padding: 1.35rem 1.5rem;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
  z-index: 999;
  display: none;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from { transform: translateY(40px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.cookie-banner-title {
  font-size: 1.05rem;
  font-family: var(--font-heading);
  margin-bottom: 0.35rem;
}

.cookie-banner-text {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.cookie-banner-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.65rem;
}

/* Footer */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-card);
  background: var(--bg-card-solid);
  padding: 4rem 0 2rem;
}

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

.footer-brand p {
  font-size: 0.92rem;
  margin: 1rem 0 1.25rem;
  max-width: 340px;
}

.footer-col-title {
  font-size: 0.95rem;
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-main);
  margin-bottom: 1.15rem;
}

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

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

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

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-card);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* ==========================================================================
   Structural & Component Classes (Site Layout, Articles, Tools, FAQ, UI)
   ========================================================================== */

/* Site Navigation */
.site-nav {
  display: flex;
  align-items: center;
}

/* Footer Column */
.footer-col {
  display: flex;
  flex-direction: column;
}

/* Breadcrumbs */
.breadcrumb-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

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

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

.breadcrumb-separator {
  color: var(--text-dim);
  user-select: none;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  line-height: 1;
}

.badge-primary {
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid rgba(139, 92, 246, 0.35);
  color: #c084fc;
}

.badge-accent {
  background: rgba(34, 211, 238, 0.15);
  border: 1px solid rgba(34, 211, 238, 0.35);
  color: var(--accent-cyan);
}

.badge-outline {
  background: transparent;
  border: 1px solid var(--border-card);
  color: var(--text-muted);
}

/* Card Component */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

/* Section Containers & Headers */
.section {
  padding: 3.5rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.section-title {
  font-size: clamp(1.75rem, 3vw + 0.5rem, 2.35rem);
  margin: 0.5rem 0;
  color: var(--text-main);
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto;
}

/* Hero Content & Search */
.hero-content {
  text-align: center;
}

.hero-search-wrapper {
  display: flex;
  align-items: center;
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-card);
  border-radius: 14px;
  padding: 0.6rem 1.25rem;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
  max-width: 650px;
  margin: 1.5rem auto 1.75rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.hero-search-wrapper:focus-within {
  border-color: var(--accent-purple);
  box-shadow: var(--glow-primary);
}

/* AdSense Container */
.adsbygoogle {
  display: block;
  min-height: 90px;
  width: 100%;
}

/* Tool Grid & Card Additions */
.tool-card-category {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-cyan);
}

/* Tool Documentation & Detail Page Layout */
.tool-page-header {
  text-align: center;
  margin-bottom: 2rem;
}

.tool-page-title {
  font-size: clamp(2rem, 3.5vw + 1rem, 2.75rem);
  margin-bottom: 0.75rem;
}

.tool-page-subtitle {
  max-width: 720px;
  margin: 0 auto;
  font-size: 1.1rem;
  color: var(--text-muted);
}

.tool-ui-container {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass-glow);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
  margin-bottom: 2.5rem;
}

.tool-docs-layout {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.tool-doc-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.tool-doc-heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.tool-steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gradient-accent);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.step-text {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* FAQ Accordion */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

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

.faq-item.open {
  border-color: var(--border-glass-glow);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.15rem 1.4rem;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: color var(--transition-fast);
}

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

.faq-toggle-icon {
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1;
  color: var(--accent-cyan);
  transition: transform var(--transition-fast);
  margin-left: 1rem;
  flex-shrink: 0;
}

.faq-answer {
  display: none;
  padding: 0 1.4rem 1.25rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

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

.faq-answer-inner {
  line-height: 1.7;
}

/* Article Cards & Grid */
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.75rem;
}

.article-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  height: 100%;
}

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

.article-card-cover {
  height: 160px;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.2), rgba(139, 92, 246, 0.25), rgba(236, 72, 153, 0.2));
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  border-bottom: 1px solid var(--border-card);
}

.article-card-badge {
  align-self: flex-start;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.article-card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-card-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 0.75rem;
}

.article-card-title a {
  color: var(--text-main);
  transition: color var(--transition-fast);
}

.article-card-title a:hover {
  color: var(--accent-cyan);
}

.article-card-excerpt {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 1.25rem;
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-top: auto;
}

/* Article Page Layout & Detail */
.article-layout {
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.article-header {
  margin-bottom: 2rem;
}

.article-title {
  font-size: clamp(2rem, 3.5vw + 1rem, 2.85rem);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.65rem;
  font-size: 0.88rem;
  color: var(--text-dim);
  margin-bottom: 1.5rem;
}

.article-hero-banner {
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.12), rgba(139, 92, 246, 0.15), rgba(236, 72, 153, 0.12));
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  margin-bottom: 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.article-hero-badge {
  display: inline-block;
  padding: 0.35rem 1rem;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.article-hero-title {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-main);
  max-width: 800px;
  margin: 0 auto;
}

.article-hero-byline {
  margin-top: 1rem;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.companion-tool-card {
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.08), rgba(139, 92, 246, 0.08));
  border: 1px solid var(--border-glass-glow);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.companion-tool-eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.companion-tool-title {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-main);
}

.companion-tool-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0.25rem 0 0;
}

/* Table of Contents */
.article-toc,
.toc-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  margin-bottom: 2.5rem;
}

.article-toc-title,
.toc-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 1rem;
}

.article-toc-list,
.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-left: 0;
  padding-left: 0;
}

.article-toc-list li a,
.toc-list li a {
  color: var(--accent-cyan);
  font-size: 0.92rem;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.article-toc-list li a:hover,
.toc-list li a:hover {
  color: var(--accent-purple);
  text-decoration: underline;
}

.article-lead {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--text-main);
  margin-bottom: 1.5rem;
  font-weight: 400;
}

.article-body {
  color: var(--text-main);
  font-size: 1.05rem;
  line-height: 1.8;
}

.article-body h2 {
  font-size: 1.65rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-card);
}

.article-body h3 {
  font-size: 1.3rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--text-main);
}

.article-body p {
  margin-bottom: 1.25rem;
  color: var(--text-muted);
}

.article-body ul,
.article-body ol {
  margin: 1rem 0 1.5rem 1.75rem;
  color: var(--text-muted);
  line-height: 1.75;
}

.article-body li {
  margin-bottom: 0.5rem;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.95rem;
  display: block;
  overflow-x: auto;
}

.article-body th,
.article-body td {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-card);
  text-align: left;
}

.article-body th {
  background: var(--bg-surface-elevated);
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--text-main);
}

.article-body {
  max-width: 100%;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.article-body * {
  max-width: 100%;
}

.article-body pre,
.article-body code {
  background: var(--code-bg);
  border: 1px solid var(--border-card);
  border-radius: 8px;
  font-family: var(--font-mono);
}

.article-body code {
  padding: 0.2rem 0.4rem;
  font-size: 0.9em;
  color: var(--accent-cyan);
  word-break: break-all;
  overflow-wrap: anywhere;
  white-space: normal;
}

.article-body pre {
  padding: 1.25rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  max-width: 100%;
}

.article-body div[style*="font-mono"],
.article-body div[style*="font-family:var(--font-mono)"] {
  max-width: 100%;
  overflow-x: auto;
  word-break: break-all;
  overflow-wrap: anywhere;
}

.author-box {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  margin-top: 2.5rem;
}

.author-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #ffffff;
  font-size: 1.25rem;
  flex-shrink: 0;
}

/* Alert Notification Boxes */
.alert {
  padding: 0.85rem 1.2rem;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

.alert-error {
  background: var(--alert-error-bg);
  border: 1px solid var(--alert-error);
  color: var(--alert-error);
}

.alert-info {
  background: var(--alert-info-bg);
  border: 1px solid var(--alert-info);
  color: var(--alert-info);
}

.alert-warning {
  background: var(--alert-warning-bg);
  border: 1px solid var(--alert-warning);
  color: var(--alert-warning);
}

.alert-success {
  background: var(--alert-success-bg);
  border: 1px solid var(--alert-success);
  color: var(--alert-success);
}

/* Media Queries & Responsive */
@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 64px;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-card-solid);
    border-bottom: 1px solid var(--border-card);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1.25rem;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
  }
  .nav-links.open {
    display: flex;
  }
  .mobile-menu-toggle {
    display: flex;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .cookie-banner {
    left: 1rem;
    right: 1rem;
    bottom: 1rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding-left: 0.75rem !important;
    padding-right: 0.75rem !important;
  }
  .tool-ui-container {
    padding: 1.25rem 0.75rem !important;
  }
  .card, .glass-card {
    padding: 1.15rem 0.75rem !important;
  }
  .btn {
    padding: 0.55rem 0.85rem !important;
    font-size: 0.88rem !important;
  }
  .hero-search-wrapper {
    padding: 0.5rem 0.75rem !important;
  }
  .article-body pre {
    padding: 0.85rem !important;
    font-size: 0.82rem !important;
  }
  .article-hero-banner {
    padding: 1.75rem 1rem !important;
  }
}

/* Global Overflow Prevention */
canvas, #qr-canvas {
  max-width: 100% !important;
  height: auto !important;
}

code {
  word-break: break-all;
  overflow-wrap: anywhere;
}

pre {
  max-width: 100%;
  overflow-x: auto;
  word-break: break-all;
  white-space: pre-wrap;
}

table {
  display: block;
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}