/*
Theme Name: TVERDA SOFT Blog
Theme URI: https://tverdasoft.ru/blog
Author: TVERDA SOFT
Author URI: https://tverdasoft.ru
Description: Кастомная тема для блога TVERDA SOFT с интеграцией основного сайта
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: tverdasoft-blog
*/

/* ============================================
   ИМПОРТ CSS ПЕРЕМЕННЫХ И СТИЛЕЙ
============================================ */

/* CSS переменные из основного сайта */
:root {
  /* Основные цвета */
  --color-primary: #3B82F6; /* TVERDA Blue */
  --color-primary-dark: #2563EB;
  --color-primary-light: #DBEAFE;
  --color-secondary: #1E293B; /* TVERDA Dark */
  --color-background: #FFFFFF;
  --color-background-alt: #F5F5F5;

  /* Акцентные цвета */
  --color-success: #10B981;
  --color-error: #EF4444;
  --color-warning: #F59E0B;
  --color-info: #3B82F6;
  --color-accent-red: #DC2626;

  /* Текст */
  --color-text-primary: #1A1A1A;
  --color-text-secondary: #333333;
  --color-text-tertiary: #666666;
  --color-text-muted: #999999;

  /* Границы */
  --color-border: #E5E5E5;
  --color-border-light: #F0F0F0;

  /* Типографика */
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Отступы (8px grid) */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  --spacing-4xl: 96px;

  /* Контейнер */
  --container-max-width: 1200px;
  --container-padding: 24px;
}

/* ============================================
   БАЗОВЫЕ СТИЛИ
============================================ */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-background);
}

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

/* ============================================
   HEADER СТИЛИ
============================================ */

header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border-light);
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
}

.logo-img {
  height: 48px;
  width: auto;
  transition: transform 0.3s ease;
}

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

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-link {
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  position: relative;
  transition: color 0.3s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width 0.3s ease;
}

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

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

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* ============================================
   FOOTER СТИЛИ
============================================ */

footer {
  background: var(--color-secondary);
  color: #E2E8F0;
  padding: var(--spacing-4xl) var(--container-padding);
  margin-top: var(--spacing-4xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-col h4 {
  color: white;
  margin-bottom: var(--spacing-md);
  font-size: 18px;
}

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

.footer-col ul li {
  margin-bottom: var(--spacing-sm);
}

.footer-col a {
  color: #CBD5E1;
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ============================================
   КОНТЕНТ БЛОГА
============================================ */

main {
  min-height: calc(100vh - 200px);
  padding: var(--spacing-2xl) 0;
}

.blog-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.blog-header h1 {
  font-size: 48px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

.blog-header p {
  font-size: 20px;
  color: var(--color-text-tertiary);
}

.post-list {
  display: grid;
  gap: var(--spacing-2xl);
}

.post-card {
  background: white;
  border-radius: 12px;
  padding: var(--spacing-xl);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.post-card h2 {
  font-size: 28px;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.post-card h2 a {
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

.post-card h2 a:hover {
  color: var(--color-primary);
}

.post-meta {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  font-size: 14px;
  color: var(--color-text-tertiary);
}

.post-excerpt {
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
}

.post-read-more {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
}

.post-read-more:hover {
  text-decoration: underline;
}

/* ============================================
   АДАПТИВНОСТЬ
============================================ */

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }

  .blog-header h1 {
    font-size: 32px;
  }
}