/*!
Theme Name: SmartBuyLabs
Theme URI: https://smartbuylabs.in
Description: Professional tech review theme with Amazon Associates compliance. Editorial-focused, lightweight, and fast.
Version: 1.0.0
Author: SmartBuyLabs
Author URI: https://smartbuylabs.in
License: GPL v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: smartbuylabs
Domain Path: /languages
Tags: tech, reviews, responsive, lightweight, editorial

This theme is designed for professional electronics and gadget reviews.
For affiliate links compliance, please add your Amazon Associates disclosure in Footer Settings.
*/

/* CSS Variables */
:root {
  --color-primary: #0A4D8C;
  --color-accent: #F57C00;
  --color-white: #FFFFFF;
  --color-light-gray: #F5F5F5;
  --color-gray: #E0E0E0;
  --color-dark-gray: #757575;
  --color-text: #212121;
  --color-text-light: #424242;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "Monaco", "Courier New", monospace;
  --spacing-unit: 1rem;
  --max-width: 800px;
  --transition: all 0.3s ease;
}

/* Reset & Normalize */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-white);
  line-height: 1.6;
  font-size: 1rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 600;
  margin-bottom: calc(var(--spacing-unit) * 0.75);
  line-height: 1.3;
  color: var(--color-text);
}

h1 {
  font-size: 2.5rem;
  margin-bottom: calc(var(--spacing-unit) * 1.5);
}

h2 {
  font-size: 2rem;
  margin-top: calc(var(--spacing-unit) * 1.5);
  margin-bottom: var(--spacing-unit);
}

h3 {
  font-size: 1.5rem;
  margin-top: calc(var(--spacing-unit) * 1.25);
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--spacing-unit);
}

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

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

em, i {
  font-style: italic;
}

strong, b {
  font-weight: 600;
}

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

figure {
  margin-bottom: var(--spacing-unit);
}

figcaption {
  font-size: 0.875rem;
  color: var(--color-dark-gray);
  margin-top: 0.5rem;
  font-style: italic;
}

/* Lists */
ul, ol {
  margin-left: var(--spacing-unit);
  margin-bottom: var(--spacing-unit);
}

li {
  margin-bottom: 0.5rem;
}

/* Code */
code, pre {
  font-family: var(--font-mono);
  background-color: var(--color-light-gray);
  border-radius: 4px;
}

code {
  padding: 2px 6px;
  font-size: 0.9em;
  color: #d63384;
}

pre {
  padding: var(--spacing-unit);
  overflow-x: auto;
  margin-bottom: var(--spacing-unit);
}

pre code {
  background-color: transparent;
  color: inherit;
  padding: 0;
}

/* Blockquote */
blockquote {
  border-left: 4px solid var(--color-primary);
  padding-left: var(--spacing-unit);
  margin-left: 0;
  margin-bottom: var(--spacing-unit);
  color: var(--color-text-light);
  font-style: italic;
}

/* Horizontal Rule */
hr {
  border: none;
  border-top: 1px solid var(--color-gray);
  margin: calc(var(--spacing-unit) * 2) 0;
}

/* Container & Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-unit);
}

.site-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-unit);
}

/* Header */
.site-header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-gray);
  padding: calc(var(--spacing-unit) * 1.5) 0;
  position: relative;
  z-index: 100;
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-unit);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-branding {
  display: flex;
  align-items: center;
  gap: var(--spacing-unit);
}

.site-logo {
  max-width: 50px;
  height: auto;
}

.site-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0;
}

.site-tagline {
  font-size: 0.875rem;
  color: var(--color-dark-gray);
  margin: 0;
}

/* Navigation */
.primary-navigation {
  display: flex;
  list-style: none;
  gap: calc(var(--spacing-unit) * 2);
}

.primary-navigation a {
  color: var(--color-text);
  font-weight: 500;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}

.primary-navigation a:hover,
.primary-navigation .current-menu-item > a {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* Footer */
.site-footer {
  background-color: var(--color-light-gray);
  padding: calc(var(--spacing-unit) * 3) 0;
  margin-top: calc(var(--spacing-unit) * 4);
  border-top: 1px solid var(--color-gray);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-unit);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: calc(var(--spacing-unit) * 2);
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.footer-widget {
  line-height: 1.8;
}

.footer-widget h3 {
  font-size: 1rem;
  margin-top: 0;
  margin-bottom: var(--spacing-unit);
}

.footer-widget ul {
  list-style: none;
  margin-left: 0;
}

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

.footer-widget a {
  color: var(--color-primary);
}

.amazon-disclosure {
  background-color: var(--color-white);
  padding: var(--spacing-unit);
  border-radius: 4px;
  border: 1px solid var(--color-gray);
  margin-bottom: var(--spacing-unit);
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-dark-gray);
}

.site-footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-unit);
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-dark-gray);
  border-top: 1px solid var(--color-gray);
  padding-top: var(--spacing-unit);
}

/* Posts & Articles */
.article-header {
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.article-meta {
  display: flex;
  gap: var(--spacing-unit);
  flex-wrap: wrap;
  font-size: 0.9rem;
  color: var(--color-dark-gray);
  margin-bottom: var(--spacing-unit);
  padding-bottom: var(--spacing-unit);
  border-bottom: 1px solid var(--color-gray);
}

.meta-author::before,
.meta-date::before,
.meta-category::before {
  margin-right: 0.25rem;
}

/* Blog Grid */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: calc(var(--spacing-unit) * 2);
  margin-bottom: calc(var(--spacing-unit) * 3);
}

.post-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray);
  border-radius: 4px;
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.post-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  border-color: var(--color-primary);
}

.post-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.post-card-content {
  padding: var(--spacing-unit);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.post-card-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  margin-top: 0;
  color: var(--color-text);
}

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

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

.post-card-excerpt {
  font-size: 0.95rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-unit);
  flex-grow: 1;
}

.post-card-meta {
  font-size: 0.85rem;
  color: var(--color-dark-gray);
}

.post-card-link {
  display: inline;
  color: var(--color-primary);
  font-weight: 500;
}

/* Section Headers */
.section-header {
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.section-title {
  font-size: 1.75rem;
  margin-bottom: var(--spacing-unit);
  color: var(--color-primary);
}

.section-description {
  color: var(--color-dark-gray);
  font-size: 1rem;
}

/* Table of Contents */
.toc {
  background-color: var(--color-light-gray);
  padding: var(--spacing-unit);
  border-radius: 4px;
  margin-bottom: calc(var(--spacing-unit) * 2);
  border-left: 4px solid var(--color-primary);
}

.toc-title {
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: var(--spacing-unit);
  color: var(--color-primary);
}

.toc ul {
  list-style: none;
  margin-left: 0;
  font-size: 0.95rem;
}

.toc li {
  margin-bottom: 0.5rem;
}

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

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin: calc(var(--spacing-unit) * 3) 0;
  flex-wrap: wrap;
}

.pagination a,
.pagination span {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-gray);
  border-radius: 4px;
  color: var(--color-primary);
  text-align: center;
}

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

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

/* Buttons (for read more, etc.) */
.btn {
  display: inline-block;
  padding: 0.5rem 1.5rem;
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  border-radius: 4px;
  font-weight: 500;
  transition: var(--transition);
  text-decoration: none;
}

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

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

.btn-primary:hover {
  background-color: #083a6b;
  border-color: #083a6b;
}

/* Responsive */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .header-content {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }

  .primary-navigation {
    flex-direction: column;
    gap: var(--spacing-unit);
    margin-top: var(--spacing-unit);
  }

  .posts-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }

  .article-meta {
    flex-direction: column;
    gap: 0;
  }
}

@media (max-width: 480px) {
  :root {
    font-size: 15px;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  .primary-navigation {
    gap: 0.5rem;
  }

  .site-title {
    font-size: 1.25rem;
  }
}

/* Accessibility */
.screen-reader-text {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Print Styles */
@media print {
  .site-header,
  .site-footer,
  .pagination,
  .primary-navigation {
    display: none;
  }

  body {
    font-size: 12pt;
  }
}

/* Gutenberg Compatibility */
.wp-block-image {
  margin-bottom: var(--spacing-unit);
}

.wp-block-quote {
  border-left: 4px solid var(--color-primary);
  padding-left: var(--spacing-unit);
  margin-left: 0;
  margin-bottom: var(--spacing-unit);
  color: var(--color-text-light);
}