/* CSS Reset & Variable Definitions */
:root {
  --font-serif: Georgia, Cambria, "Times New Roman", Times, serif;
  --font-sans: "Segoe UI", Arial, Helvetica, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Harmonious, tailored color palette */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  
  --text-primary: #0f172a;    /* Slate 900 */
  --text-secondary: #334155;  /* Slate 700 */
  --text-muted: #64748b;      /* Slate 500 */
  
  --brand-primary: #1e3a8a;   /* Deep Editorial Blue */
  --brand-accent: #0284c7;    /* Slate-tinted cyan */
  --brand-accent-hover: #0369a1;
  --success: #0f766e;
  
  --border-primary: #e2e8f0;  /* Slate 200 */
  --border-dark: #334155;     /* Slate 700 */
  --border-light: #f1f5f9;    /* Slate 100 */

  --focus-outline: #2563eb;
  
  --transition-smooth: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.01);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
  
  --container-max: 1200px;
}

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

html {
  font-family: var(--font-sans);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

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

/* Accessibility: Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--brand-primary);
  color: var(--bg-primary);
  padding: 1rem 1.5rem;
  z-index: 1000;
  text-decoration: none;
  font-weight: 600;
  border-radius: 0 0 4px 0;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 0;
}

/* Focus States */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid var(--focus-outline);
  outline-offset: 2px;
}

/* Typography styling */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
}

h1 {
  font-size: clamp(2rem, 4vw, 3.25rem);
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  letter-spacing: -0.01em;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  border-bottom: 2px solid var(--border-primary);
  padding-bottom: 0.5rem;
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
}

p {
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  max-width: 75ch; /* Editorial Measure */
}

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

a:hover {
  color: var(--brand-accent-hover);
  text-decoration: underline;
}

ul, ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
  color: var(--text-secondary);
  max-width: 75ch;
}

li {
  margin-bottom: 0.5rem;
}

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

.section-padding {
  padding: 4rem 0;
}

/* Header & Navigation */
.site-header {
  background-color: var(--bg-primary);
  border-bottom: 4px solid var(--text-primary);
  padding: 1.5rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  color: var(--brand-primary);
  background: var(--bg-tertiary);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  vertical-align: middle;
  border: 1px solid var(--border-primary);
}

.logo:hover {
  text-decoration: none;
}

.site-nav ul {
  display: flex;
  list-style: none;
  padding: 0;
  margin: 0;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.nav-link {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0;
}

.nav-link:hover,
.nav-link.active {
  color: var(--brand-primary);
  text-decoration: none;
  border-bottom: 2px solid var(--brand-primary);
}

/* Main Content Area */
.main-content {
  flex-grow: 1;
  background-color: var(--bg-secondary);
}

/* Page Intro/Hero Block */
.hero-block {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-primary);
  padding: 3rem 0;
  margin-bottom: 2rem;
}

.hero-meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--brand-accent);
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
  display: block;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 800px;
  line-height: 1.5;
}

/* Category Grid on Homepage */
.category-headline {
  font-family: var(--font-serif);
  font-size: 2rem;
  margin-bottom: 1.5rem;
  border-bottom: 4px solid var(--text-primary);
  padding-bottom: 0.5rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.category-headline span {
  white-space: nowrap;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.category-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-top: 4px solid var(--brand-primary);
  padding: 2rem;
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-dark);
}

.category-card h3 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  margin-top: 0;
  margin-bottom: 0.75rem;
}

.category-card h3 a {
  color: var(--text-primary);
  text-decoration: none;
}

.category-card h3 a:hover {
  color: var(--brand-primary);
  text-decoration: underline;
}

.category-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.category-card .card-action {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--brand-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

/* Latest Analysis & Articles */
.articles-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2.5rem;
}

@media (max-width: 900px) {
  .articles-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .header-container {
    align-items: flex-start;
  }

  .site-nav {
    width: 100%;
  }

  .site-nav ul {
    width: 100%;
    gap: 0.85rem 1.25rem;
    justify-content: flex-start;
  }

  .nav-link {
    font-size: 0.88rem;
  }

  .category-headline {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }

  .category-headline span {
    white-space: normal;
  }
}

.articles-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Article Card (List & Homepage) */
.article-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: 4px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
}

.article-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-dark);
}

.article-card-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  display: flex;
  gap: 1rem;
}

.article-card h3 {
  font-size: 1.5rem;
  margin-top: 0;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.article-card h3 a {
  color: var(--text-primary);
  text-decoration: none;
}

.article-card h3 a:hover {
  color: var(--brand-primary);
  text-decoration: underline;
}

.article-card p {
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.article-card .read-more {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--brand-accent);
}

/* Sidebar / Info Desk */
.sidebar-panel {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: 4px;
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  height: fit-content;
}

.sidebar-panel h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  margin-top: 0;
  margin-bottom: 1rem;
  border-bottom: 2px solid var(--text-primary);
  padding-bottom: 0.5rem;
}

.sidebar-panel p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.sidebar-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar-links li {
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
}

.sidebar-links li a {
  color: var(--text-primary);
  font-weight: 500;
}

.sidebar-links li a:hover {
  color: var(--brand-primary);
}

/* Article Template Structure */
.article-container {
  max-width: 800px;
  margin: 0 auto;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: 4px;
  padding: 3rem 2.5rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 4rem;
}

.article-header {
  border-bottom: 1px solid var(--border-primary);
  padding-bottom: 2rem;
  margin-bottom: 2.5rem;
}

.article-title {
  margin-top: 0.5rem;
  margin-bottom: 1rem;
}

.article-meta {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.article-content {
  font-family: var(--font-sans);
}

.article-content h2 {
  font-family: var(--font-serif);
  color: var(--text-primary);
}

.article-content h3 {
  font-family: var(--font-serif);
  color: var(--text-primary);
}

.article-content blockquote {
  border-left: 4px solid var(--brand-primary);
  padding: 0.5rem 1.5rem;
  margin: 1.5rem 0;
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  font-style: italic;
}

.article-content blockquote p {
  margin-bottom: 0;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 0.95rem;
}

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

.article-content th {
  background-color: var(--bg-tertiary);
  font-weight: 700;
  color: var(--text-primary);
}

.article-content tr:hover {
  background-color: var(--bg-secondary);
}

.pros-cons-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin: 2rem 0;
}

@media (max-width: 600px) {
  .pros-cons-grid {
    grid-template-columns: 1fr;
  }
}

.pro-box {
  background-color: #f0fdf4;
  border-left: 4px solid #16a34a;
  padding: 1.5rem;
  border-radius: 4px;
}

.pro-box h4 {
  color: #14532d;
  margin-bottom: 0.75rem;
}

.con-box {
  background-color: #fef2f2;
  border-left: 4px solid #dc2626;
  padding: 1.5rem;
  border-radius: 4px;
}

.con-box h4 {
  color: #7f1d1d;
  margin-bottom: 0.75rem;
}

/* Contact Page Facade styles */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
}

@media (max-width: 800px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.contact-form-facade {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: 4px;
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
}

.contact-intro {
  margin-bottom: 2rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: 4px;
  transition: var(--transition-smooth);
}

.form-control:focus {
  border-color: var(--brand-accent);
  background-color: var(--bg-primary);
}

.form-control[readonly] {
  cursor: not-allowed;
  color: var(--text-muted);
  background-color: var(--bg-tertiary);
}

.btn-primary {
  display: inline-block;
  background-color: var(--brand-primary);
  color: var(--bg-primary);
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.btn-primary:hover {
  background-color: #1e40af;
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.btn-primary[disabled] {
  background-color: #94a3b8;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-primary[disabled]:hover {
  background-color: #94a3b8;
  box-shadow: none;
  text-decoration: none;
}

.contact-note {
  margin-top: 1rem;
  margin-bottom: 0;
  padding-top: 1rem;
  border-top: 1px solid var(--border-primary);
  font-size: 0.95rem;
  color: var(--text-muted);
}

.contact-info-panel {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-card-sub {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: 4px;
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.contact-card-sub h3 {
  font-family: var(--font-serif);
  margin-top: 0;
  margin-bottom: 0.5rem;
}

/* Footer styling */
.site-footer {
  background-color: var(--text-primary);
  color: var(--bg-secondary);
  border-top: 4px solid var(--brand-primary);
  padding: 4rem 0 2rem;
  margin-top: auto;
}

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

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.footer-brand h3 {
  color: var(--bg-primary);
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.footer-brand p {
  color: #94a3b8;
  font-size: 0.9rem;
  max-width: 400px;
}

.footer-nav h4 {
  color: var(--bg-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.25rem;
}

.footer-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-nav ul li {
  margin-bottom: 0.5rem;
}

.footer-nav ul li a {
  color: #94a3b8;
  font-size: 0.9rem;
  transition: var(--transition-smooth);
}

.footer-nav ul li a:hover {
  color: var(--bg-primary);
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid #334155;
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  color: #64748b;
  font-size: 0.85rem;
}

.footer-bottom p {
  margin-bottom: 0;
}