/* CSS Design System for thesizer.net */

:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #121824;
  --bg-card: #182030;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --accent: #8b5cf6; /* Indigo/Violet */
  --accent-light: #c084fc;
  --accent-dark: #6d28d9;
  --accent-glow: rgba(139, 92, 246, 0.15);
  --border-color: #232e42;
  --max-width: 960px;
  --font-sans: "Segoe UI", Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --focus-outline: 2px solid #a78bfa;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.625;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow-x: hidden;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 1000;
  background-color: var(--accent);
  color: var(--text-primary);
  padding: 0.7rem 1rem;
  border-radius: 999px;
  font-weight: 700;
}

.skip-link:focus {
  top: 1rem;
}

a {
  color: var(--accent-light);
  text-decoration: none;
  transition: var(--transition);
}

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

/* Accessibility Focus States */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 4px;
}

/* Site Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(10, 14, 23, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-logo {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  letter-spacing: -0.025em;
}

.logo-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent);
}

.site-nav {
  display: flex;
  gap: 1.5rem;
}

.nav-link {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.25rem 0.5rem;
  position: relative;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent);
  transition: var(--transition);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

/* Main content wrapper */
.main-content {
  flex-grow: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

/* Home Layout */
.home-container {
  display: flex;
  flex-direction: column;
  gap: 4.5rem;
}

.home-hero {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 3rem;
}

.intro-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-light);
  background-color: var(--accent-glow);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  border: 1px solid rgba(139, 92, 246, 0.3);
  margin-bottom: 1.5rem;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6vw, 3.75rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.hero-content {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 70ch;
}

.hero-content p {
  margin-bottom: 1.25rem;
}

/* Featured Article Section */
.section-title {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.section-title::after {
  content: '';
  flex-grow: 1;
  height: 1px;
  background-color: var(--border-color);
}

.featured-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.featured-card:hover {
  transform: translateY(-4px);
  border-color: rgba(139, 92, 246, 0.4);
  box-shadow: 0 10px 30px rgba(139, 92, 246, 0.05), 0 4px 20px rgba(0, 0, 0, 0.3);
}

.featured-card-image {
  height: 240px;
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border-color);
}

.featured-card-content {
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.card-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.meta-divider {
  color: var(--border-color);
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  line-height: 1.3;
  margin-bottom: 1rem;
}

.card-title a {
  color: var(--text-primary);
}

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

.card-description {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 1.75rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-link {
  align-self: flex-start;
  font-weight: 600;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent-light);
}

.card-link svg {
  transition: transform 0.3s ease;
}

.card-link:hover {
  color: var(--text-primary);
}

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

/* Framing Section */
.framing-section {
  border-top: 1px solid var(--border-color);
  padding-top: 3rem;
}

.framing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.framing-item {
  background-color: rgba(18, 24, 36, 0.5);
  border: 1px dashed var(--border-color);
  border-radius: 12px;
  padding: 2rem;
}

.framing-item h4 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.framing-item p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Page Layout */
.page-container {
  max-width: 720px;
  margin: 0 auto;
}

.page-header {
  margin-bottom: 3rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 2rem;
}

.page-title {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.page-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.page-content {
  font-size: 1.05rem;
  line-height: 1.75;
}

.page-content p {
  margin-bottom: 1.5rem;
}

/* Article Page Layout (Notes) */
.article-container {
  max-width: 720px;
  margin: 0 auto;
}

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

.article-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.article-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 2.75rem);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.article-lead {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.article-featured-image-wrapper {
  margin-bottom: 3rem;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.article-featured-image {
  width: 100%;
  height: auto;
  display: block;
}

.article-body {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.article-body h2 {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: var(--text-primary);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  line-height: 1.3;
}

.article-body p {
  margin-bottom: 1.5rem;
}

.article-body blockquote {
  border-left: 4px solid var(--accent);
  background-color: var(--bg-secondary);
  padding: 1rem 1.5rem;
  margin: 2rem 0;
  border-radius: 0 8px 8px 0;
  font-style: italic;
  color: var(--text-primary);
}

.article-body ul, .article-body ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

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

.article-body hr {
  border: 0;
  height: 1px;
  background-color: var(--border-color);
  margin: 3rem 0;
}

.article-body strong {
  color: var(--text-primary);
}

/* Figures and captions (Custom render hook results) */
.article-figure {
  margin: 2.5rem 0;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  padding: 0.5rem;
}

.article-figure img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  display: block;
  transition: opacity 0.3s ease;
}

.article-figure a:hover img {
  opacity: 0.85;
}

.article-figcaption {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-align: center;
  padding: 0.75rem 1rem 0.5rem;
  line-height: 1.4;
  border-top: 1px solid rgba(35, 46, 66, 0.4);
  margin-top: 0.5rem;
}

/* Author Card */
.article-footer {
  margin-top: 4rem;
  border-top: 1px solid var(--border-color);
  padding-top: 3rem;
}

.author-card {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem;
}

.author-avatar {
  width: 64px;
  height: 64px;
  background-color: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
  flex-shrink: 0;
  box-shadow: 0 0 15px rgba(139, 92, 246, 0.3);
}

.author-info h5 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.author-info p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Contact Page Layout */
.contact-container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  margin-top: 2rem;
}

.contact-info-panel {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.detail-item {
  border-left: 2px solid var(--accent);
  padding-left: 1.25rem;
}

.detail-item h5 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.detail-item p {
  font-size: 0.925rem;
  color: var(--text-secondary);
}

.contact-form-panel {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2.5rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.submit-btn {
  background-color: var(--accent);
  color: var(--text-primary);
  border: none;
  border-radius: 8px;
  padding: 0.875rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  margin-top: 0.5rem;
}

.submit-btn:hover:not(:disabled) {
  background-color: var(--accent-hover);
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}

.submit-btn:active:not(:disabled) {
  transform: translateY(1px);
}

.submit-btn:disabled {
  cursor: not-allowed;
  opacity: 0.65;
}

.form-note {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Footer styling */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  padding: 3rem 1.5rem;
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  align-items: center;
  text-align: center;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.brand-name {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.15rem;
}

.brand-tagline {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-meta {
  font-size: 0.825rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.classification-tag {
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.75rem;
  color: var(--accent-light);
  font-weight: 600;
}

/* Responsive adjustments */
@media (min-width: 768px) {
  .featured-card {
    grid-template-columns: 320px 1fr;
  }
  
  .featured-card-image {
    height: 100%;
    border-bottom: none;
    border-right: 1px solid var(--border-color);
  }
  
  .framing-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .contact-grid {
    grid-template-columns: 1fr 1.2fr;
  }
  
  .footer-container {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
    align-items: flex-start;
  }
  
  .footer-meta {
    text-align: right;
    align-items: flex-end;
  }
}