/* StyleText - Production-Ready Responsive Stylesheet */
/* Mobile-first, zero external dependencies, accessible, high contrast */

:root {
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
  
  /* Light Theme Colors */
  --bg-page: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-alt: #f1f5f9;
  --border-color: #e2e8f0;
  --border-hover: #cbd5e1;
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-subtle: #64748b;
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #eef2ff;
  --primary-border: #c7d2fe;
  --success: #15803d;
  --success-bg: #dcfce7;
  --warning-bg: #fffbeb;
  --warning-border: #fde68a;
  --warning-text: #92400e;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --focus-ring: 0 0 0 3px rgba(79, 70, 229, 0.35);
  --header-height: 64px;
}

[data-theme="dark"] {
  --bg-page: #0b0f19;
  --bg-surface: #131c2e;
  --bg-surface-alt: #1e293b;
  --border-color: #27354a;
  --border-hover: #3b4d68;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-subtle: #64748b;
  --primary: #6366f1;
  --primary-hover: #818cf8;
  --primary-light: rgba(99, 102, 241, 0.15);
  --primary-border: rgba(99, 102, 241, 0.3);
  --success: #22c55e;
  --success-bg: rgba(34, 197, 94, 0.15);
  --warning-bg: #1c1917;
  --warning-border: #78350f;
  --warning-text: #fde68a;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --focus-ring: 0 0 0 3px rgba(129, 140, 248, 0.45);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-page: #0b0f19;
    --bg-surface: #131c2e;
    --bg-surface-alt: #1e293b;
    --border-color: #27354a;
    --border-hover: #3b4d68;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-subtle: #64748b;
    --primary: #6366f1;
    --primary-hover: #818cf8;
    --primary-light: rgba(99, 102, 241, 0.15);
    --primary-border: rgba(99, 102, 241, 0.3);
    --success: #22c55e;
    --success-bg: rgba(34, 197, 94, 0.15);
    --warning-bg: #1c1917;
    --warning-border: #78350f;
    --warning-text: #fde68a;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --focus-ring: 0 0 0 3px rgba(129, 140, 248, 0.45);
  }
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.15s ease;
}

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

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* Container */
.container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header & Navigation */
.site-header {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 1rem;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.brand-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary), #a855f7);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 800;
  font-size: 1.1rem;
  line-height: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.15s ease;
}

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

.theme-toggle-btn {
  background: var(--bg-surface-alt);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: background-color 0.15s ease;
}

.theme-toggle-btn:hover {
  background-color: var(--border-hover);
}

/* Breadcrumbs */
.breadcrumbs-nav {
  padding: 1rem 0 0.5rem 0;
  font-size: 0.875rem;
  color: var(--text-subtle);
}

.breadcrumbs-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  gap: 0.5rem;
}

.breadcrumbs-list li::after {
  content: "/";
  margin-left: 0.5rem;
  color: var(--text-subtle);
}

.breadcrumbs-list li:last-child::after {
  content: "";
}

.breadcrumbs-list a {
  color: var(--text-muted);
  text-decoration: none;
}

.breadcrumbs-list a:hover {
  color: var(--primary);
  text-decoration: underline;
}

.breadcrumbs-list [aria-current="page"] {
  color: var(--text-main);
  font-weight: 500;
}

/* Page Intro & Direct Answer */
.page-intro {
  padding: 1.25rem 0 1.5rem 0;
}

.page-title {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.025em;
  color: var(--text-main);
  margin-bottom: 0.85rem;
}

@media (min-width: 640px) {
  .page-title {
    font-size: 2.5rem;
  }
}

.direct-answer {
  background-color: var(--bg-surface);
  border-left: 4px solid var(--primary);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.6;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
}

/* Accessibility Note Callout */
.a11y-notice {
  background-color: var(--warning-bg);
  border: 1px solid var(--warning-border);
  color: var(--warning-text);
  padding: 0.85rem 1.15rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.a11y-notice-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
  line-height: 1.2;
}

/* Interactive Tool Card */
.tool-section {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  margin-bottom: 2rem;
}

@media (min-width: 640px) {
  .tool-section {
    padding: 2rem;
  }
}

.tool-input-label {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.tool-input-wrapper {
  position: relative;
  margin-bottom: 1.5rem;
}

.tool-textarea {
  width: 100%;
  min-height: 100px;
  padding: 0.85rem 1rem;
  font-family: inherit;
  font-size: 1.15rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-surface-alt);
  color: var(--text-main);
  resize: vertical;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

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

.tool-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.char-counter {
  font-size: 0.85rem;
  color: var(--text-subtle);
}

.clear-btn, .refresh-btn {
  background: var(--bg-surface-alt);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  cursor: pointer;
  min-height: 44px;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.15s ease;
}

.clear-btn:hover, .refresh-btn:hover {
  background: var(--border-hover);
  color: var(--text-main);
}

.refresh-btn.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}

.refresh-btn.primary:hover {
  background: var(--primary-hover);
}

/* Results Grid: Fancy Text Styles */
.results-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .results-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
}

.style-card {
  background-color: var(--bg-surface-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.75rem;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

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

.style-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.style-name {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-subtle);
}

.style-preview-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.85rem;
  font-size: 1.15rem;
  word-break: break-word;
  min-height: 52px;
  display: flex;
  align-items: center;
}

.copy-btn {
  background-color: var(--primary);
  color: #ffffff;
  border: none;
  cursor: pointer;
  min-height: 44px;
  width: 100%;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: background-color 0.15s ease, transform 0.1s ease;
}

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

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

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

/* Name Generator Grid */
.names-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
  margin-top: 1.25rem;
}

@media (min-width: 640px) {
  .names-grid {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  }
}

.name-item-card {
  background-color: var(--bg-surface-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.name-text {
  font-size: 1.1rem;
  font-weight: 600;
  word-break: break-word;
  color: var(--text-main);
}

.item-copy-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  flex-shrink: 0;
  transition: all 0.15s ease;
}

.item-copy-btn:hover {
  background: var(--primary-light);
  border-color: var(--primary-border);
  color: var(--primary);
}

.item-copy-btn.copied {
  background: var(--success-bg);
  border-color: var(--success);
  color: var(--success);
}

/* Symbol Picker Grid */
.symbols-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(64px, 1fr));
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.symbol-button {
  background-color: var(--bg-surface-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  cursor: pointer;
  min-width: 44px;
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  transition: transform 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}

.symbol-button:hover {
  background-color: var(--primary-light);
  border-color: var(--primary-border);
  transform: translateY(-2px);
}

.symbol-button:active {
  transform: scale(0.95);
}

.symbol-button.copied {
  background-color: var(--success-bg);
  border-color: var(--success);
  color: var(--success);
}

/* Divider lines picker list */
.dividers-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.divider-button {
  background-color: var(--bg-surface-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  cursor: pointer;
  min-height: 52px;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 1.05rem;
  text-align: left;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.divider-button:hover {
  background-color: var(--primary-light);
  border-color: var(--primary-border);
}

.divider-button .copy-hint {
  font-size: 0.8rem;
  color: var(--text-subtle);
  flex-shrink: 0;
  font-weight: 500;
}

/* Ad Containers (Rendered only when ADS_ENABLED is true) */
.ad-slot-container {
  margin: 2rem 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.ad-slot-wrapper {
  width: 100%;
  max-width: 728px;
  min-height: 100px;
  background-color: var(--bg-surface-alt);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.ad-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-subtle);
  margin-bottom: 0.25rem;
}

/* Article / Editorial Content Area */
.content-section {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow-sm);
}

@media (min-width: 640px) {
  .content-section {
    padding: 2.25rem;
  }
}

.content-section h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
  letter-spacing: -0.015em;
}

.content-section h2:first-child {
  margin-top: 0;
}

.content-section h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-main);
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
}

.content-section p {
  color: var(--text-muted);
  margin-bottom: 1rem;
  font-size: 1.025rem;
  line-height: 1.7;
}

.content-section ul, .content-section ol {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
  font-size: 1rem;
  line-height: 1.65;
}

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

.content-section pre {
  background-color: var(--bg-surface-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-main);
  margin-bottom: 1.25rem;
}

.content-section code {
  font-family: var(--font-mono);
  background-color: var(--bg-surface-alt);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  font-size: 0.9em;
  color: var(--primary);
}

/* Sitemap List Layout */
.sitemap-group {
  margin-bottom: 1.5rem;
}

.sitemap-group h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-main);
}

.sitemap-links-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
  list-style: none;
}

@media (min-width: 640px) {
  .sitemap-links-grid {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  }
}

.sitemap-links-grid a {
  display: block;
  padding: 0.6rem 0.85rem;
  background-color: var(--bg-surface-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.15s ease;
}

.sitemap-links-grid a:hover {
  background-color: var(--primary-light);
  border-color: var(--primary-border);
  color: var(--primary);
}

/* 404 Search & Popular Links */
.search-box-wrapper {
  margin: 1.5rem 0 2rem 0;
}

.search-input {
  width: 100%;
  min-height: 48px;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-surface-alt);
  color: var(--text-main);
}

/* Toast Notification */
.toast-alert {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 100;
  background-color: #0f172a;
  color: #ffffff;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
  font-weight: 600;
  transform: translateY(100px);
  opacity: 0;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.25s ease;
  pointer-events: none;
}

[data-theme="dark"] .toast-alert {
  background-color: #ffffff;
  color: #0f172a;
}

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

.toast-icon {
  color: #22c55e;
  font-size: 1.1rem;
}

/* Site Footer */
.site-footer {
  margin-top: auto;
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0 2rem 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

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

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer-brand p {
  margin-top: 0.5rem;
  font-size: 0.95rem;
  color: var(--text-subtle);
  line-height: 1.5;
}

.footer-column h4 {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-main);
  margin-bottom: 0.85rem;
}

.footer-column ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-column a {
  color: var(--text-muted);
  text-decoration: none;
  display: inline-block;
  min-height: 36px;
  line-height: 36px;
}

.footer-column a:hover {
  color: var(--primary);
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-subtle);
}

@media (min-width: 640px) {
  .footer-bottom {
    flex-direction: row;
  }
}

/* Request a New Style or Font Card */
.request-style-card {
  background-color: var(--bg-surface-alt);
  border: 1px dashed var(--primary-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-top: 2rem;
  box-shadow: var(--shadow-sm);
}

.request-style-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.5rem;
}

.request-style-header h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
}

.request-style-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

.request-form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

@media (min-width: 640px) {
  .request-form-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.request-input-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.request-input-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
}

.request-input {
  width: 100%;
  min-height: 44px;
  padding: 0.6rem 0.85rem;
  font-family: inherit;
  font-size: 0.95rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: var(--bg-surface);
  color: var(--text-main);
  transition: border-color 0.15s ease;
}

.request-input:focus {
  border-color: var(--primary);
  outline: none;
}

.request-btn-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.request-btn-row .primary-btn {
  background-color: var(--primary);
  color: #ffffff;
  border: none;
  cursor: pointer;
  min-height: 44px;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: background-color 0.15s ease;
}

.request-btn-row .primary-btn:hover {
  background-color: var(--primary-hover);
}

.request-btn-row .secondary-btn {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  cursor: pointer;
  min-height: 44px;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.15s ease;
}

.request-btn-row .secondary-btn:hover {
  background-color: var(--border-hover);
}

.request-note {
  font-size: 0.8rem;
  color: var(--text-subtle);
  margin-top: 0.75rem;
}