/*
Theme Name: The Housing Signal
Theme URI: https://thehousingsignal.com
Author: The Housing Signal Team
Author URI: https://thehousingsignal.com
Description: A custom WordPress theme for The Housing Signal - housing market insights, mortgage rate trends, and homebuying guidance. Optimized for AdSense revenue with strategic ad placements.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: the-housing-signal
Tags: blog, news, one-column, two-columns, right-sidebar, custom-menu, featured-images, threaded-comments, translation-ready
*/

/* ============================================
   CSS Variables & Base Styles
   ============================================ */
:root {
  --color-primary: #1e40af;
  --color-primary-dark: #1e3a8a;
  --color-secondary: #0f766e;
  --color-accent: #f59e0b;
  --color-background: #f8fafc;
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-border: #e2e8f0;
  --color-white: #ffffff;
  --color-gray-50: #f8fafc;
  --color-gray-100: #f1f5f9;
  --color-gray-200: #e2e8f0;
  --color-gray-300: #cbd5e1;
  --color-gray-400: #94a3b8;
  --color-gray-500: #64748b;
  --color-gray-600: #475569;
  --color-gray-700: #334155;
  --color-gray-800: #1e293b;
  --color-gray-900: #0f172a;
  --color-blue-50: #eff6ff;
  --color-blue-100: #dbeafe;
  --color-blue-200: #bfdbfe;
  --color-blue-400: #60a5fa;
  --color-blue-600: #2563eb;
  --color-blue-800: #1e40af;
  --color-blue-900: #1e3a8a;
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --max-width: 1280px;
  --content-width: 768px;
}

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

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.3;
  margin-top: 0;
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1rem;
}

.content-area {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding: 3rem 0;
}

@media (min-width: 1024px) {
  .content-area {
    grid-template-columns: 2fr 1fr;
  }
}

/* ============================================
   Header
   ============================================ */
.site-header {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-branding {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-branding svg {
  width: 32px;
  height: 32px;
  color: var(--color-primary);
}

.site-branding .site-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin: 0;
}

.site-branding .site-title a {
  color: inherit;
  text-decoration: none;
}

/* Navigation */
.main-navigation {
  display: none;
}

@media (min-width: 768px) {
  .main-navigation {
    display: flex;
    align-items: center;
    gap: 1.5rem;
  }
}

.main-navigation a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-600);
  transition: color 0.2s;
}

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

/* Mobile Menu */
.mobile-menu-toggle {
  display: block;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
}

@media (min-width: 768px) {
  .mobile-menu-toggle {
    display: none;
  }
}

.mobile-menu-toggle svg {
  width: 24px;
  height: 24px;
}

.mobile-navigation {
  display: none;
  padding: 1rem 0;
  border-top: 1px solid var(--color-border);
}

.mobile-navigation.active {
  display: block;
}

.mobile-navigation a {
  display: block;
  padding: 0.5rem 0;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-600);
}

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

/* ============================================
   Hero Section
   ============================================ */
.hero-section {
  background: linear-gradient(to bottom right, #1e3a8a, #1e40af, #1d4ed8);
  color: white;
  padding: 4rem 0;
}

@media (min-width: 768px) {
  .hero-section {
    padding: 5rem 0;
  }
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}

@media (min-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr 1fr;
  }
}

.hero-title {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: white;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }
}

@media (min-width: 1024px) {
  .hero-title {
    font-size: 3rem;
  }
}

.hero-description {
  font-size: 1.125rem;
  color: #bfdbfe;
  margin-bottom: 1.5rem;
}

.hero-features {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem 0;
}

.hero-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  color: #eff6ff;
}

.hero-features li::before {
  content: "✓";
  color: #4ade80;
  font-weight: bold;
}

.hero-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-categories a {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background 0.2s;
}

.hero-categories a:hover {
  background: rgba(255,255,255,0.2);
  color: white;
}

.hero-image {
  display: none;
}

@media (min-width: 768px) {
  .hero-image {
    display: block;
  }
}

.hero-image img {
  border-radius: 0.75rem;
  box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25);
  width: 100%;
}

/* ============================================
   Article Cards
   ============================================ */
.article-card {
  background: var(--color-white);
  border-radius: 0.5rem;
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.article-card:hover {
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
}

.article-card a {
  color: inherit;
  text-decoration: none;
}

.article-card-image {
  width: 100%;
  height: 192px;
  object-fit: cover;
  transition: transform 0.3s;
}

.article-card:hover .article-card-image {
  transform: scale(1.05);
}

.article-card-image-wrapper {
  overflow: hidden;
}

.article-card-body {
  padding: 1rem;
}

.article-card-category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-primary);
  background: var(--color-blue-50);
  padding: 0.125rem 0.5rem;
  border-radius: 0.25rem;
  margin-bottom: 0.5rem;
}

.article-card-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-gray-900);
  margin-bottom: 0.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card:hover .article-card-title {
  color: var(--color-primary);
}

.article-card-excerpt {
  font-size: 0.875rem;
  color: var(--color-gray-600);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 0.75rem;
}

.article-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.article-card-readtime {
  font-size: 0.75rem;
  color: var(--color-gray-500);
}

.article-card-readmore {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-primary);
}

/* Featured Article Card */
.featured-article {
  position: relative;
  border-radius: 0.75rem;
  overflow: hidden;
  margin-bottom: 2rem;
}

.featured-article a {
  display: block;
  color: white;
  text-decoration: none;
}

.featured-article img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  transition: transform 0.3s;
}

.featured-article:hover img {
  transform: scale(1.05);
}

.featured-article-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
}

.featured-article-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem;
}

.featured-article-category {
  display: inline-block;
  background: var(--color-blue-600);
  color: white;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.25rem 0.625rem;
  border-radius: 0.25rem;
  margin-bottom: 0.75rem;
}

.featured-article-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: white;
  margin-bottom: 0.5rem;
}

@media (min-width: 768px) {
  .featured-article-title {
    font-size: 1.5rem;
  }
}

.featured-article-excerpt {
  font-size: 0.875rem;
  color: #e2e8f0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Articles Grid */
.articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

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

/* ============================================
   Single Article
   ============================================ */
.single-article {
  background: var(--color-white);
  border-radius: 0.75rem;
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.single-article-header {
  padding: 1.5rem 1.5rem 0;
}

@media (min-width: 768px) {
  .single-article-header {
    padding: 2.5rem 2.5rem 0;
  }
}

.single-article-category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-primary);
  background: var(--color-blue-50);
  padding: 0.25rem 0.75rem;
  border-radius: 0.25rem;
  margin-bottom: 1rem;
}

.single-article-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 1rem;
}

@media (min-width: 768px) {
  .single-article-title {
    font-size: 2.25rem;
  }
}

.single-article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--color-gray-500);
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.single-article-featured-image {
  width: 100%;
  max-height: 400px;
  object-fit: cover;
}

.single-article-content {
  padding: 1.5rem;
}

@media (min-width: 768px) {
  .single-article-content {
    padding: 2.5rem;
  }
}

.single-article-content p {
  margin-bottom: 1.25rem;
  line-height: 1.75;
  color: var(--color-gray-700);
}

.single-article-content h2 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.single-article-content h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-gray-900);
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

.time-sensitive-note {
  background: #fef3c7;
  border: 1px solid #fde68a;
  border-radius: 0.5rem;
  padding: 1rem;
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
  color: #92400e;
}

.time-sensitive-note strong {
  display: block;
  margin-bottom: 0.25rem;
}

/* ============================================
   Sidebar
   ============================================ */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.sidebar-widget {
  background: var(--color-white);
  border-radius: 0.5rem;
  border: 1px solid var(--color-border);
  padding: 1.25rem;
}

.sidebar-widget-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-gray-900);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.popular-articles-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.popular-articles-list li {
  margin-bottom: 0.75rem;
}

.popular-articles-list li a {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: var(--color-gray-700);
  font-size: 0.875rem;
  line-height: 1.4;
}

.popular-articles-list li a:hover {
  color: var(--color-primary);
}

.popular-articles-list .number {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background: var(--color-blue-100);
  color: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
}

/* Newsletter Widget */
.newsletter-widget {
  background: var(--color-blue-50);
  border-color: var(--color-blue-100);
}

.newsletter-widget p {
  font-size: 0.875rem;
  color: var(--color-gray-600);
  margin-bottom: 0.5rem;
}

.newsletter-widget .coming-soon {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary);
}

/* Ad Placeholder */
.ad-placeholder {
  background: var(--color-gray-100);
  border: 1px dashed var(--color-gray-300);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-500);
  font-size: 0.75rem;
}

.ad-placeholder-sidebar {
  height: 250px;
  width: 100%;
}

.ad-placeholder-leaderboard {
  height: 90px;
  width: 100%;
  margin: 1.5rem 0;
}

.ad-placeholder-rectangle {
  height: 280px;
  width: 100%;
  max-width: 336px;
  margin: 1.5rem auto;
}

/* ============================================
   Categories Section
   ============================================ */
.categories-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

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

@media (min-width: 1024px) {
  .categories-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

.category-card {
  display: block;
  padding: 1rem;
  background: var(--color-white);
  border-radius: 0.5rem;
  border: 1px solid var(--color-border);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.category-card:hover {
  border-color: var(--color-blue-200);
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
}

.category-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-gray-900);
  margin-bottom: 0.25rem;
}

.category-card:hover h3 {
  color: var(--color-primary);
}

.category-card p {
  font-size: 0.875rem;
  color: var(--color-gray-500);
  margin: 0;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
  background: var(--color-gray-900);
  color: var(--color-gray-300);
  margin-top: auto;
}

.footer-inner {
  padding: 3rem 0;
}

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

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
  }
}

.footer-brand .site-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: white;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-brand p {
  font-size: 0.875rem;
  color: var(--color-gray-400);
}

.footer-heading {
  font-size: 0.75rem;
  font-weight: 600;
  color: white;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

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

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

.footer-links a {
  font-size: 0.875rem;
  color: var(--color-gray-400);
  transition: color 0.2s;
}

.footer-links a:hover {
  color: white;
}

.footer-email {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  font-size: 0.875rem;
  color: var(--color-gray-400);
}

.footer-email a {
  color: var(--color-gray-400);
}

.footer-email a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid var(--color-gray-800);
  padding: 2rem 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.875rem;
  color: var(--color-gray-500);
  margin: 0;
}

/* ============================================
   Breadcrumbs
   ============================================ */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-gray-500);
  margin-bottom: 1.5rem;
}

.breadcrumbs a {
  color: var(--color-gray-500);
}

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

.breadcrumbs .separator {
  color: var(--color-gray-400);
}

/* ============================================
   Pages (About, Contact, etc.)
   ============================================ */
.page-content {
  background: var(--color-white);
  border-radius: 0.75rem;
  border: 1px solid var(--color-border);
  padding: 1.5rem;
}

@media (min-width: 768px) {
  .page-content {
    padding: 2.5rem;
  }
}

.page-content h1 {
  margin-bottom: 1.5rem;
}

.page-content h2 {
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.page-content p {
  margin-bottom: 1rem;
  line-height: 1.75;
  color: var(--color-gray-700);
}

.page-content ul, .page-content ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.page-content li {
  margin-bottom: 0.5rem;
  line-height: 1.75;
  color: var(--color-gray-700);
}

/* Info Grid (About page) */
.info-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 2rem 0;
}

@media (min-width: 768px) {
  .info-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.info-card {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--color-blue-50);
  border-radius: 0.5rem;
}

.info-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-gray-900);
  margin-bottom: 0.25rem;
}

.info-card p {
  font-size: 0.875rem;
  color: var(--color-gray-600);
  margin: 0;
}

/* ============================================
   Contact Form
   ============================================ */
.contact-form {
  max-width: 600px;
}

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

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-700);
  margin-bottom: 0.375rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--color-border);
  border-radius: 0.375rem;
  font-size: 0.875rem;
  font-family: var(--font-body);
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.btn-primary {
  display: inline-block;
  background: var(--color-primary);
  color: white;
  padding: 0.625rem 1.5rem;
  border-radius: 0.375rem;
  font-size: 0.875rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: background 0.2s;
}

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

/* ============================================
   Mortgage Calculator
   ============================================ */
.mortgage-calculator {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  padding: 1.5rem;
  max-width: 500px;
  margin: 2rem 0;
}

.mortgage-calculator h3 {
  font-size: 1.25rem;
  margin-bottom: 1.25rem;
  color: var(--color-gray-900);
}

.calculator-result {
  margin-top: 1.5rem;
  padding: 1rem;
  background: var(--color-blue-50);
  border-radius: 0.5rem;
  text-align: center;
}

.calculator-result .amount {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
}

.calculator-result .label {
  font-size: 0.875rem;
  color: var(--color-gray-600);
}

/* ============================================
   Section Headings
   ============================================ */
.section-heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ============================================
   Utility Classes
   ============================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.text-center {
  text-align: center;
}

/* ============================================
   WordPress Specific
   ============================================ */
.alignleft {
  float: left;
  margin-right: 1.5rem;
  margin-bottom: 1rem;
}

.alignright {
  float: right;
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

.aligncenter {
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.wp-caption {
  max-width: 100%;
}

.wp-caption-text {
  font-size: 0.875rem;
  color: var(--color-gray-500);
  text-align: center;
  padding: 0.5rem 0;
}

/* Comments */
.comments-area {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.comment-list {
  list-style: none;
  padding: 0;
}

.comment-body {
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
}

.comment-author {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.comment-content p {
  margin: 0.5rem 0;
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 2rem;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 0.375rem;
  font-size: 0.875rem;
  border: 1px solid var(--color-border);
  color: var(--color-gray-700);
}

.pagination a:hover {
  background: var(--color-blue-50);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.pagination .current {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}