/*
Theme Name: EGSRiZ Theme
Theme URI:
Author: EGSRiZ Expert
Description: Тема для экспертного сайта по прогнозной диагностике и адаптивному управлению ЭГСРиЗ турбин
Version: 1.0.0
Text Domain: egsriz-theme
*/

/* ==========================================================================
   1. Design Tokens
   ========================================================================== */

:root {
    --color-primary: #1B3A5C;
    --color-primary-dark: #132a42;
    --color-accent: #E8851C;
    --color-accent-hover: #d0750f;
    --color-bg: #F5F5F5;
    --color-text: #333333;
    --color-muted: #708090;
    --color-white: #ffffff;
    --color-border: #e0e0e0;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

    --header-height: 72px;
    --container-max: 1200px;
}

/* ==========================================================================
   2. Reset & Base
   ========================================================================== */

*, *::before, *::after {
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

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

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

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

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

ul, ol {
    list-style: none;
}

/* ==========================================================================
   3. Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family);
    font-weight: 700;
    line-height: 1.25;
    color: var(--color-primary);
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.375rem; }
h4 { font-size: 1.125rem; }

.entry-content p {
    margin-bottom: var(--space-md);
}

.entry-content h2,
.entry-content h3,
.entry-content h4 {
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-md);
}

.entry-content ul,
.entry-content ol {
    margin-bottom: var(--space-md);
    padding-left: var(--space-xl);
    list-style: disc;
}

.entry-content ol {
    list-style: decimal;
}

.entry-content blockquote {
    border-left: 4px solid var(--color-accent);
    padding: var(--space-md) var(--space-lg);
    margin: var(--space-lg) 0;
    background: var(--color-white);
    border-radius: var(--radius-sm);
}

/* ==========================================================================
   4. Layout
   ========================================================================== */

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

.site-main {
    min-height: calc(100vh - var(--header-height) - 200px);
    padding-top: var(--header-height);
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-more {
    text-align: center;
    margin-top: var(--space-2xl);
}

/* ==========================================================================
   5. Header
   ========================================================================== */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--color-white);
    z-index: 1000;
    transition: box-shadow 0.3s;
}

.site-header.is-scrolled {
    box-shadow: var(--shadow-md);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.site-branding a {
    display: flex;
    align-items: center;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 40px;
    height: 40px;
    position: relative;
    z-index: 1001;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    transition: all 0.3s;
    position: absolute;
    left: 8px;
}

.hamburger { top: 19px; }
.hamburger::before { content: ''; top: -7px; }
.hamburger::after { content: ''; top: 7px; }

.menu-toggle[aria-expanded="true"] .hamburger {
    background: transparent;
}

.menu-toggle[aria-expanded="true"] .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .hamburger::after {
    top: 0;
    transform: rotate(-45deg);
}

.nav-list {
    display: flex;
    gap: var(--space-lg);
    align-items: center;
}

.nav-list li a {
    font-weight: 500;
    font-size: 0.9375rem;
    padding: var(--space-sm) 0;
    position: relative;
}

.nav-list li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width 0.3s;
}

.nav-list li a:hover::after,
.nav-list li.current-menu-item a::after {
    width: 100%;
}

/* ==========================================================================
   6. Hero
   ========================================================================== */

.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    padding: var(--space-4xl) 0;
    text-align: center;
}

.hero-title {
    color: var(--color-white);
    font-size: 2.5rem;
    max-width: 800px;
    margin: 0 auto var(--space-lg);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.85);
    max-width: 600px;
    margin: 0 auto var(--space-2xl);
    line-height: 1.7;
}

.hero-cta {
    font-size: 1.0625rem;
}

/* ==========================================================================
   7. Expertise Cards
   ========================================================================== */

.section-expertise {
    padding: var(--space-4xl) 0;
    background: var(--color-white);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-2xl);
}

.expertise-card {
    text-align: center;
    padding: var(--space-2xl) var(--space-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: box-shadow 0.3s, transform 0.3s;
}

.expertise-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.expertise-icon {
    margin: 0 auto var(--space-lg);
}

.expertise-card h3 {
    margin-bottom: var(--space-md);
}

.expertise-card p {
    color: var(--color-muted);
    font-size: 0.9375rem;
    line-height: 1.7;
}

/* ==========================================================================
   8. Blog Cards
   ========================================================================== */

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-2xl);
}

.section-latest-posts {
    padding: var(--space-4xl) 0;
}

.post-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.3s, transform 0.3s;
}

.post-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.post-card-thumbnail img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.post-card-body {
    padding: var(--space-lg);
}

.post-card-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
}

.post-card-title {
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
}

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

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

.post-card-date {
    display: block;
    font-size: 0.8125rem;
    color: var(--color-muted);
    margin-bottom: var(--space-sm);
}

.post-card-annotation {
    font-size: 0.9375rem;
    color: var(--color-muted);
    margin-bottom: var(--space-md);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ==========================================================================
   9. Portfolio Cards
   ========================================================================== */

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: var(--space-2xl);
    margin-top: var(--space-2xl);
}

.portfolio-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.3s;
}

.portfolio-card:hover {
    box-shadow: var(--shadow-md);
}

.portfolio-card-thumbnail img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.portfolio-card-body {
    padding: var(--space-lg);
}

.portfolio-card-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.portfolio-card-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
    color: var(--color-white);
}

.badge-npp { background: #c0392b; }
.badge-chp { background: #2980b9; }
.badge-gas { background: #27ae60; }
.badge-other { background: var(--color-muted); }

.portfolio-field {
    margin-bottom: var(--space-md);
}

.portfolio-field strong {
    display: block;
    font-size: 0.8125rem;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: var(--space-xs);
}

.portfolio-field p {
    font-size: 0.9375rem;
    color: var(--color-muted);
    line-height: 1.6;
}

/* ==========================================================================
   10. Single Post
   ========================================================================== */

.single-layout {
    padding: var(--space-2xl) 0;
}

.single-article {
    max-width: 800px;
    margin: 0 auto;
}

.single-cover {
    margin-bottom: var(--space-2xl);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.single-cover-img {
    width: 100%;
}

.single-header {
    margin-bottom: var(--space-2xl);
}

.single-title {
    font-size: 2rem;
    margin-bottom: var(--space-md);
}

.single-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: 0.875rem;
    color: var(--color-muted);
}

.single-categories a {
    color: var(--color-accent);
    font-weight: 500;
}

.single-categories a + a::before {
    content: ', ';
}

.pdf-download {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    margin: var(--space-2xl) 0;
    background: var(--color-white);
    border: 2px solid var(--color-accent);
    border-radius: var(--radius-md);
}

.pdf-info {
    flex: 1;
}

.pdf-filename {
    display: block;
    font-weight: 600;
    color: var(--color-primary);
}

.pdf-filesize {
    font-size: 0.8125rem;
    color: var(--color-muted);
}

.single-tags {
    margin-top: var(--space-2xl);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.tag-link {
    display: inline-block;
    font-size: 0.8125rem;
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-muted);
    transition: border-color 0.2s, color 0.2s;
}

.tag-link:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.post-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-3xl);
    padding-top: var(--space-2xl);
    border-top: 1px solid var(--color-border);
    gap: var(--space-lg);
}

.post-nav-link {
    flex: 1;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: border-color 0.2s;
}

.post-nav-link:hover {
    border-color: var(--color-accent);
}

.post-nav-next {
    text-align: right;
}

.post-nav-label {
    display: block;
    font-size: 0.8125rem;
    color: var(--color-muted);
    margin-bottom: var(--space-xs);
}

.post-nav-title {
    display: block;
    font-weight: 600;
    color: var(--color-primary);
    font-size: 0.9375rem;
}

/* ==========================================================================
   11. Pages
   ========================================================================== */

.page-content {
    padding: var(--space-2xl) 0 var(--space-4xl);
}

.page-title {
    margin-bottom: var(--space-2xl);
}

/* About page */
.page-about {
    max-width: 800px;
    margin: 0 auto;
    padding-left: var(--space-lg);
    padding-right: var(--space-lg);
}

.about-photo {
    float: right;
    margin: 0 0 var(--space-lg) var(--space-2xl);
    max-width: 280px;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.about-photo img {
    border-radius: var(--radius-md);
}

/* Contacts page */
.page-contacts {
    max-width: 700px;
    margin: 0 auto;
    padding-left: var(--space-lg);
    padding-right: var(--space-lg);
}

.contact-form {
    margin-top: var(--space-2xl);
}

/* Portfolio page */
.no-projects {
    text-align: center;
    color: var(--color-muted);
    padding: var(--space-3xl) 0;
}

/* Error 404 */
.error-404 {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
    padding: var(--space-4xl) var(--space-lg);
}

.error-404 .page-title {
    font-size: 2.5rem;
    margin-bottom: var(--space-lg);
}

.error-404 p {
    margin-bottom: var(--space-lg);
}

.error-search {
    margin-top: var(--space-3xl);
}

.error-search h2 {
    font-size: 1.25rem;
    margin-bottom: var(--space-lg);
}

/* ==========================================================================
   12. CTA Block
   ========================================================================== */

.section-cta {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    padding: var(--space-4xl) 0;
    text-align: center;
}

.cta-title {
    color: var(--color-white);
    font-size: 1.75rem;
    margin-bottom: var(--space-md);
}

.cta-text {
    color: rgba(255, 255, 255, 0.85);
    max-width: 600px;
    margin: 0 auto var(--space-2xl);
    font-size: 1.0625rem;
    line-height: 1.7;
}

/* ==========================================================================
   13. Sidebar
   ========================================================================== */

.archive-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: var(--space-3xl);
    padding: var(--space-2xl) 0 var(--space-4xl);
}

.archive-header {
    margin-bottom: var(--space-2xl);
}

.archive-title {
    font-size: 1.75rem;
}

.archive-description {
    margin-top: var(--space-sm);
    color: var(--color-muted);
}

.sidebar {
    align-self: start;
    position: sticky;
    top: calc(var(--header-height) + var(--space-lg));
}

.widget {
    background: var(--color-white);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
}

.widget-title {
    font-size: 1rem;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-accent);
}

.widget ul {
    list-style: none;
}

.widget ul li {
    padding: var(--space-xs) 0;
}

.widget ul li a {
    font-size: 0.9375rem;
    color: var(--color-text);
}

.widget ul li a:hover {
    color: var(--color-accent);
}

.tagcloud a {
    display: inline-block;
    font-size: 0.8125rem !important;
    padding: var(--space-xs) var(--space-sm);
    margin: 2px;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    color: var(--color-muted);
    transition: background 0.2s, color 0.2s;
}

.tagcloud a:hover {
    background: var(--color-accent);
    color: var(--color-white);
}

/* ==========================================================================
   14. Pagination
   ========================================================================== */

.nav-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-3xl);
}

.nav-links a,
.nav-links span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    transition: background 0.2s, color 0.2s;
}

.nav-links a {
    background: var(--color-white);
    color: var(--color-primary);
    border: 1px solid var(--color-border);
}

.nav-links a:hover {
    background: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

.nav-links .current {
    background: var(--color-primary);
    color: var(--color-white);
}

/* ==========================================================================
   15. Footer
   ========================================================================== */

.site-footer {
    background: var(--color-primary-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: var(--space-2xl) 0;
}

.footer-widgets {
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-widget-title {
    color: var(--color-white);
    font-size: 1rem;
    margin-bottom: var(--space-md);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copyright {
    font-size: 0.875rem;
}

.footer-nav {
    display: flex;
    gap: var(--space-lg);
}

.footer-nav li a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    transition: color 0.2s;
}

.footer-nav li a:hover {
    color: var(--color-white);
}

/* ==========================================================================
   16. Buttons
   ========================================================================== */

.btn-primary {
    display: inline-block;
    background: var(--color-accent);
    color: var(--color-white);
    padding: var(--space-md) var(--space-2xl);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9375rem;
    border: none;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s;
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    color: var(--color-white);
    transform: translateY(-1px);
}

.btn-outline {
    display: inline-block;
    color: var(--color-primary);
    padding: var(--space-md) var(--space-2xl);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: background 0.2s, color 0.2s;
}

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

.btn-pdf {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-accent);
    font-weight: 600;
    font-size: 0.875rem;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-sm);
    transition: background 0.2s, color 0.2s;
}

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

.btn-pdf:hover img {
    filter: brightness(0) invert(1);
}

/* ==========================================================================
   17. Forms (CF7 Overrides)
   ========================================================================== */

.wpcf7 input[type="text"],
.wpcf7 input[type="email"],
.wpcf7 input[type="tel"],
.wpcf7 textarea {
    width: 100%;
    padding: var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 1rem;
    transition: border-color 0.2s;
    background: var(--color-white);
}

.wpcf7 input:focus,
.wpcf7 textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(232, 133, 28, 0.15);
}

.wpcf7 textarea {
    min-height: 150px;
    resize: vertical;
}

.wpcf7 p {
    margin-bottom: var(--space-md);
}

.wpcf7 label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--space-sm);
    font-size: 0.9375rem;
}

.wpcf7 input[type="submit"] {
    display: inline-block;
    background: var(--color-accent);
    color: var(--color-white);
    padding: var(--space-md) var(--space-2xl);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.2s;
}

.wpcf7 input[type="submit"]:hover {
    background: var(--color-accent-hover);
}

/* Search form */
.search-form {
    display: flex;
    gap: var(--space-sm);
}

.search-form .search-field {
    flex: 1;
    padding: var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 1rem;
}

.search-form .search-field:focus {
    outline: none;
    border-color: var(--color-accent);
}

.search-form .search-submit {
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.search-form .search-submit:hover {
    background: var(--color-primary-dark);
}

/* ==========================================================================
   18. Utilities
   ========================================================================== */

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

/* ==========================================================================
   19. Responsive
   ========================================================================== */

@media (max-width: 1280px) {
    :root {
        --container-max: 1040px;
    }
}

@media (max-width: 1024px) {
    .expertise-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .archive-layout {
        grid-template-columns: 1fr 240px;
    }

    .about-photo {
        max-width: 220px;
    }
}

@media (max-width: 768px) {
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }

    .menu-toggle {
        display: block;
    }

    .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-white);
        display: flex;
        align-items: flex-start;
        justify-content: center;
        padding-top: var(--space-3xl);
        transform: translateX(100%);
        transition: transform 0.3s;
        z-index: 999;
    }

    .main-nav.is-open {
        transform: translateX(0);
    }

    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: var(--space-xl);
    }

    .nav-list li a {
        font-size: 1.125rem;
    }

    body.menu-open {
        overflow: hidden;
    }

    .hero {
        padding: var(--space-3xl) 0;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .expertise-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

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

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

    .archive-layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
    }

    .about-photo {
        float: none;
        margin: 0 auto var(--space-2xl);
        max-width: 100%;
    }

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

    .footer-nav {
        justify-content: center;
    }

    .post-navigation {
        flex-direction: column;
    }

    .single-title {
        font-size: 1.5rem;
    }

    .pdf-download {
        flex-direction: column;
        text-align: center;
    }
}