/*
Theme Name: FIKT Brand
Theme URI: https://fikt-news.ztu.edu.ua
Author: Viktor Zhelizko
Author URI: https://github.com/victorchei
Description: Custom theme for FIKT (Faculty of ICT) — Zhytomyr Polytechnic University. Brand colors, Montserrat typography, responsive layout, WCAG 2.2 AA compliant.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.9
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: fikt-brand
Tags: news, education, university, ukrainian, accessibility-ready, custom-menu, custom-logo, featured-images
*/

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

:root {
  --color-primary: #224A98;
  --color-primary-dark: #1a3a78;
  --color-primary-light: #2d5ec0;
  --color-red: #E53E23;
  --color-orange: #EE781C;
  --color-green: #4CAD3B;
  --color-white: #ffffff;
  --color-bg: #f5f6f8;
  --color-text: #1a1a2e;
  --color-text-secondary: #4a4a5a;
  --color-border: #d8dce6;
  --color-card-bg: #ffffff;

  --font-primary: 'Montserrat', Arial, sans-serif;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 3px rgba(34, 74, 152, 0.08);
  --shadow-md: 0 4px 12px rgba(34, 74, 152, 0.1);
  --shadow-lg: 0 8px 24px rgba(34, 74, 152, 0.12);

  --header-height: 72px;
  --max-width: 1280px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-regular);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

a:focus-visible {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 2px;
  border-radius: 2px;
}

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

:target,
:focus {
  scroll-margin-top: calc(var(--header-height) + 1.5rem);
}

/* === Skip Link === */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 9999;
  padding: 0.75rem 1.5rem;
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: var(--font-weight-semibold);
  border-radius: 0 0 var(--radius-sm) 0;
}

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

/* === Header === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

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

.site-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-white);
  font-weight: var(--font-weight-bold);
  font-size: 1.125rem;
  text-decoration: none;
}

.site-brand:hover {
  color: var(--color-white);
  opacity: 0.9;
}

.site-brand img {
  height: 44px;
  width: auto;
}

.site-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.site-brand-name {
  font-size: 1.125rem;
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.01em;
}

.site-brand-sub {
  font-size: 0.75rem;
  font-weight: var(--font-weight-regular);
  opacity: 0.85;
}

/* === Navigation === */
.main-nav {
  display: flex;
  align-items: center;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 0;
  align-items: center;
}

.nav-menu li {
  position: relative;
}

.nav-menu a {
  display: block;
  padding: 0.625rem 1rem;
  color: var(--color-white);
  font-weight: var(--font-weight-medium);
  font-size: 0.9375rem;
  border-radius: var(--radius-sm);
  transition: background-color 0.15s ease;
  white-space: nowrap;
}

.nav-menu a:hover,
.nav-menu a:focus-visible {
  background-color: rgba(255, 255, 255, 0.15);
  color: var(--color-white);
}

.nav-menu .current-menu-item > a,
.nav-menu .current_page_item > a {
  background-color: rgba(255, 255, 255, 0.2);
}

/* Dropdown */
.nav-menu .menu-item-has-children > a {
  padding-right: 1.75rem;
}

.nav-menu .menu-item-has-children > a::after {
  content: '';
  position: absolute;
  right: 0.625rem;
  top: 50%;
  transform: translateY(-50%);
  border: 4px solid transparent;
  border-top-color: currentColor;
}

.nav-menu .sub-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-xs) 0;
  list-style: none;
  z-index: 200;
}

.nav-menu .menu-item-has-children:hover > .sub-menu,
.nav-menu .menu-item-has-children:focus-within > .sub-menu,
.nav-menu .menu-item-has-children[aria-expanded="true"] > .sub-menu {
  display: block;
}

.nav-menu .sub-menu a {
  color: var(--color-text);
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  border-radius: 0;
}

.nav-menu .sub-menu a:hover,
.nav-menu .sub-menu a:focus-visible {
  background-color: var(--color-bg);
  color: var(--color-primary);
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-white);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}

.menu-toggle:hover,
.menu-toggle:focus-visible {
  background-color: rgba(255, 255, 255, 0.15);
}

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

/* === Main Content === */
.site-main {
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
  width: 100%;
}

.page-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.2;
}

/* === News Grid === */
.news-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--spacing-md);
}

@media (min-width: 640px) {
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .news-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1440px) {
  .news-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* === Post Card === */
.post-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
}

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

.post-card__image {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background-color: var(--color-bg);
}

.post-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.post-card:hover .post-card__image img {
  transform: scale(1.03);
}

.post-card__body {
  padding: var(--spacing-sm) var(--spacing-md);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.post-card__date {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.post-card__title {
  font-size: 1rem;
  font-weight: var(--font-weight-semibold);
  line-height: 1.35;
  margin-bottom: var(--spacing-xs);
}

.post-card__title a {
  color: var(--color-text);
  text-decoration: none;
}

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

.post-card__excerpt {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card__category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  background: rgba(34, 74, 152, 0.08);
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  margin-top: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* === Single Post === */
.single-post-content {
  max-width: 48rem;
  margin: 0 auto;
}

.single-post-content .entry-header {
  margin-bottom: var(--spacing-lg);
}

.single-post-content .entry-title {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  line-height: 1.25;
  margin-bottom: var(--spacing-sm);
}

.single-post-content .entry-meta {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.single-post-content .entry-meta a {
  color: var(--color-primary);
}

.single-post-content .post-thumbnail {
  margin-bottom: var(--spacing-lg);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.single-post-content .post-thumbnail img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.single-post-content .entry-content {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--color-text);
}

.single-post-content .entry-content p {
  margin-bottom: var(--spacing-md);
}

.single-post-content .entry-content img {
  border-radius: var(--radius-sm);
  margin: var(--spacing-md) 0;
}

.single-post-content .entry-content a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.single-post-content .entry-content h2,
.single-post-content .entry-content h3 {
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
}

.single-post-content .entry-content ul,
.single-post-content .entry-content ol {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
}

.single-post-content .entry-content li {
  margin-bottom: var(--spacing-xs);
}

/* Post Tags */
.post-tags {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.post-tags a {
  display: inline-block;
  font-size: 0.8125rem;
  color: var(--color-primary);
  background: rgba(34, 74, 152, 0.06);
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  border: 1px solid rgba(34, 74, 152, 0.15);
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.post-tags a:hover {
  background: rgba(34, 74, 152, 0.12);
  border-color: rgba(34, 74, 152, 0.25);
}

/* Post Navigation */
.post-navigation {
  margin-top: var(--spacing-xl);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.post-navigation a {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-card-bg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.15s ease;
}

.post-navigation a:hover {
  box-shadow: var(--shadow-md);
}

.post-navigation .nav-label {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.post-navigation .nav-title {
  font-weight: var(--font-weight-semibold);
  font-size: 0.9375rem;
  color: var(--color-text);
}

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

/* === Static Pages === */
.page-content {
  max-width: 48rem;
  margin: 0 auto;
}

.page-content .entry-content {
  font-size: 1.0625rem;
  line-height: 1.75;
}

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

.page-content .entry-content h2 {
  font-size: 1.5rem;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
}

.page-content .entry-content h3 {
  font-size: 1.25rem;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.page-content .entry-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--spacing-md);
}

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

.page-content .entry-content th {
  background: var(--color-bg);
  font-weight: var(--font-weight-semibold);
}

/* === Specialties Page === */
.specialties-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.specialty-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--color-primary);
  transition: box-shadow 0.15s ease;
}

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

.specialty-card__code {
  font-size: 0.8125rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.specialty-card__name {
  font-size: 1.0625rem;
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-xs);
}

.specialty-card__dept {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

/* === Pagination === */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  min-height: 40px;
  padding: 0.375rem 0.75rem;
  font-size: 0.9375rem;
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-sm);
  transition: background-color 0.15s ease, color 0.15s ease;
}

.pagination a {
  color: var(--color-text);
  background: var(--color-card-bg);
  box-shadow: var(--shadow-sm);
}

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

.pagination .current {
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: var(--font-weight-bold);
}

/* === Footer === */
.site-footer {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-xl) var(--spacing-md) var(--spacing-lg);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

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

.footer-section h3 {
  font-size: 1rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-sm);
  opacity: 0.9;
}

.footer-section p,
.footer-section a {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.6;
}

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

.footer-contacts li {
  list-style: none;
  margin-bottom: var(--spacing-xs);
  font-size: 0.875rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-xs);
}

.footer-links a {
  display: inline-block;
  padding: 0.125rem 0;
}

.footer-bottom {
  max-width: var(--max-width);
  margin: var(--spacing-lg) auto 0;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--spacing-sm);
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.7);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.7);
}

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

/* === 404 Page === */
.error-404 {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-md);
  min-height: 50dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.error-404 .error-code {
  font-size: clamp(4rem, 10vw, 8rem);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  line-height: 1;
  opacity: 0.15;
}

.error-404 h1 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

.error-404 p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

.error-404 .btn-home {
  display: inline-block;
  padding: 0.75rem 2rem;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-sm);
  font-weight: var(--font-weight-semibold);
  transition: background-color 0.15s ease;
}

.error-404 .btn-home:hover {
  background: var(--color-primary-dark);
  color: var(--color-white);
}

/* === Responsive === */
@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-primary);
    flex-direction: column;
    padding: var(--spacing-sm);
    box-shadow: var(--shadow-lg);
  }

  .nav-menu.is-open {
    display: flex;
  }

  .nav-menu a {
    padding: 0.75rem 1rem;
  }

  .nav-menu .sub-menu {
    position: static;
    box-shadow: none;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    margin-top: 0.25rem;
  }

  .nav-menu .sub-menu a {
    color: var(--color-white);
    padding-left: 2rem;
  }

  .nav-menu .sub-menu a:hover {
    background: rgba(255, 255, 255, 0.15);
    color: var(--color-white);
  }

  .post-navigation {
    grid-template-columns: 1fr;
  }

  .site-brand img {
    height: 36px;
    width: 36px;
  }

  .site-brand-name {
    font-size: 0.875rem;
  }

  .site-brand-sub {
    display: none;
  }
}

/* === WP Required === */
.alignleft {
  float: left;
  margin-right: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.alignright {
  float: right;
  margin-left: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.aligncenter {
  display: block;
  margin: var(--spacing-md) auto;
}

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

.wp-caption-text {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  text-align: center;
  padding: var(--spacing-xs) 0;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--spacing-xs);
  margin: var(--spacing-md) 0;
}

.gallery-item {
  margin: 0;
}

.gallery-item img {
  border-radius: var(--radius-sm);
}

.screen-reader-text {
  border: 0;
  clip: rect(1px, 1px, 1px, 1px);
  clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
  word-wrap: normal !important;
}

.screen-reader-text:focus {
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  clip: auto !important;
  clip-path: none;
  color: var(--color-primary);
  display: block;
  font-size: 0.875rem;
  font-weight: var(--font-weight-semibold);
  height: auto;
  left: 5px;
  line-height: normal;
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  top: 5px;
  width: auto;
  z-index: 100000;
}