/*
Theme Name: FPSD
Theme URI: https://fpsd.ait.ac.th
Author: AIT
Author URI: https://ait.ac.th
Description: Custom theme for the Faculty of Public Policy and Sustainable Development at Asian Institute of Technology.
Version: 1.0.0
Requires at least: 6.4
Tested up to: 6.5
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: fpsd
Tags: full-site-editing, block-patterns, education
*/

/* ==========================================================================
   CSS VARIABLES - Design Tokens
   ========================================================================== */
:root {
  --color-primary: #3F6433;
  --color-primary-dark: #2d4a25;
  --color-primary-light: #4a7a3d;
  --color-accent: #A1BE37;
  --color-accent-dark: #8aa830;
  --color-white: #ffffff;
  --color-black: #000000;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  --color-footer-bg: #2d2d2d;
  --color-footer-text: #b0b0b0;
  --color-footer-heading: #ffffff;
  --color-footer-border: #444444;
  --container-max-width: 1400px;
  --container-padding: 24px;
  --font-family: 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --nav-height: 50px;
}

/* ==========================================================================
   GLOBAL RESET & FONT
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  margin: 0;
}

p {
  text-align: justify;
}

/* ==========================================================================
   WORDPRESS BLOCK THEME OVERRIDES
   WordPress wraps template parts in .wp-block-template-part containers
   with constrained layout. These overrides ensure header, nav, and footer
   render full-width as designed.
   ========================================================================== */
.wp-block-template-part,
.wp-site-blocks>* {
  max-width: none;
  margin-left: 0;
  margin-right: 0;
  padding-left: 0;
  padding-right: 0;
}

.wp-site-blocks {
  padding-top: 0;
}

.site-header,
.site-nav,
.site-footer {
  width: 100%;
  max-width: none;
  margin-left: 0;
  margin-right: 0;
}

/* ==========================================================================
   LAYOUT - Container
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header {
  background: var(--color-white);
}

.header-top {
  padding: 16px 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.site-branding {
  display: flex;
  align-items: center;
  gap: 16px;
}

.site-logo {
  display: block;
  width: 250px;
  height: auto;
  flex-shrink: 0;
}

.site-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.site-title-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.site-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.3;
}

.site-subtitle {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
}

.header-contact {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--color-gray-700);
}

.contact-icon,
.header-contact svg {
  width: 20px;
  height: 20px;
  fill: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-text {
  display: flex;
  flex-direction: column;
  line-height: 1.4;
}

.contact-text a {
  color: var(--color-gray-700);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
.site-nav {
  background: var(--color-primary);
  width: 100%;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.main-menu {
  display: flex;
  align-items: stretch;
  list-style: none;
  margin: 0;
  padding: 0;
}

.menu-item {
  position: relative;
}

.menu-link {
  display: block;
  padding: 14px 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: background-color 0.2s ease;
}

.menu-link:hover,
.menu-item.active .menu-link {
  background-color: var(--color-primary-dark);
}

.menu-link .dropdown-arrow {
  width: 10px;
  height: 10px;
  fill: currentColor;
  transition: transform 0.2s ease;
}

.menu-item:hover .dropdown-arrow {
  transform: rotate(180deg);
}

.sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 260px;
  background: var(--color-white);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  border-top: 3px solid var(--color-accent);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.2s ease;
  z-index: 1000;
  list-style: none;
  margin: 0;
  padding: 0;
}

.menu-item:hover .sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.sub-menu-item {
  border-bottom: 1px solid var(--color-gray-100);
}

.sub-menu-item:last-child {
  border-bottom: none;
}

.sub-menu-link {
  display: block;
  padding: 12px 20px;
  font-size: 14px;
  color: var(--color-gray-700);
  text-decoration: none;
  transition: all 0.2s ease;
}

.sub-menu-link:hover {
  background: var(--color-gray-50);
  color: var(--color-primary);
  padding-left: 24px;
}

.menu-toggle {
  display: none;
  padding: 12px;
  background: none;
  border: none;
  cursor: pointer;
}

.menu-toggle-icon {
  width: 24px;
  height: 24px;
  fill: var(--color-white);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
}

.footer-main {
  padding: 48px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-logo img {
  width: 60px;
  height: 60px;
  object-fit: contain;
  background: var(--color-white);
  border-radius: 4px;
  padding: 4px;
}

.footer-logo-text {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-footer-heading);
  line-height: 1.3;
}

.footer-address {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-footer-text);
  font-style: normal;
}

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 8px;
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}

.footer-contact-item svg {
  width: 16px;
  height: 16px;
  fill: var(--color-accent);
  flex-shrink: 0;
}

.footer-contact-item a {
  color: var(--color-footer-text);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.footer-section h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-footer-heading);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

.footer-menu {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-menu a {
  font-size: 14px;
  color: var(--color-footer-text);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.social-links {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--color-gray-700);
  border-radius: 4px;
  transition: background-color 0.2s ease;
}

.social-link:hover {
  background: var(--color-accent);
}

.social-link svg {
  width: 18px;
  height: 18px;
  fill: var(--color-white);
}

.footer-bottom {
  padding: 20px 0;
  border-top: 1px solid var(--color-footer-border);
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.copyright {
  font-size: 13px;
  color: var(--color-footer-text);
}

.footer-legal-links {
  display: flex;
  gap: 24px;
}

.footer-legal-links a {
  font-size: 13px;
  color: var(--color-footer-text);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  padding: 80px 0;
  margin-bottom: 64px;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 40%;
  background: url('https://static.wixstatic.com/media/eec192_645184e076d24599837955b856ac78a6~mv2.jpg') center/cover no-repeat;
  opacity: 0.3;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.7;
  margin-bottom: 32px;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: 15px;
  font-weight: 700;
  border-radius: 4px;
  text-decoration: none;
  transition: background-color 0.2s ease;
}

.hero-cta:hover {
  background: var(--color-accent-dark);
}

/* ==========================================================================
   CONTENT SECTIONS
   ========================================================================== */
.content-section {
  margin-bottom: 64px;
}

.section-header {
  margin-bottom: 32px;
}

.section-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 8px;
}

.section-title::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: var(--color-accent);
  margin-top: 12px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--color-gray-600);
  line-height: 1.6;
}

/* ==========================================================================
   PROGRAM CARDS
   ========================================================================== */
.programs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.program-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-top: 4px solid var(--color-accent);
  padding: 28px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.program-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.program-badge {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-gray-100);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 700;
  border-radius: 4px;
  margin-bottom: 16px;
}

.program-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 12px;
  line-height: 1.3;
}

.program-desc {
  font-size: 14px;
  color: var(--color-gray-600);
  line-height: 1.6;
  margin-bottom: 20px;
}

.program-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  transition: gap 0.2s ease;
}

.program-link:hover {
  gap: 10px;
}

.program-link svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* ==========================================================================
   QUICK LINKS
   ========================================================================== */
.quick-links-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.quick-link-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  text-decoration: none;
  transition: all 0.2s ease;
}

.quick-link-card:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.quick-link-card:hover .quick-link-icon {
  background: rgba(255, 255, 255, 0.2);
}

.quick-link-card:hover .quick-link-icon svg {
  fill: var(--color-white);
}

.quick-link-card:hover .quick-link-text {
  color: var(--color-white);
}

.quick-link-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-white);
  border-radius: 8px;
  flex-shrink: 0;
  transition: background-color 0.2s ease;
}

.quick-link-icon svg {
  width: 24px;
  height: 24px;
  fill: var(--color-primary);
  transition: fill 0.2s ease;
}

.quick-link-text {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-gray-800);
  transition: color 0.2s ease;
}

/* ==========================================================================
   RESPONSIVE STYLES
   ========================================================================== */
@media (max-width: 1200px) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr;
  }

  .footer-section:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 992px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }

  .header-contact {
    width: 100%;
    justify-content: flex-start;
  }

  .programs-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .quick-links-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --container-padding: 16px;
  }

  .header-contact {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .nav-inner {
    position: relative;
  }

  .menu-toggle {
    display: block;
    margin-left: auto;
  }

  .main-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-primary);
    border-top: 1px solid var(--color-primary-light);
    z-index: 999;
  }

  .main-menu.active {
    display: flex;
  }

  .menu-link {
    padding: 14px 20px;
    border-bottom: 1px solid var(--color-primary-light);
  }

  .sub-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background: var(--color-primary-dark);
  }

  .sub-menu-link {
    color: var(--color-white);
    padding-left: 40px;
  }

  .sub-menu-link:hover {
    background: var(--color-primary);
    color: var(--color-white);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

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

  .quick-links-grid {
    grid-template-columns: 1fr;
  }

  .page-hero {
    padding: 48px 0;
  }

  .page-hero::before {
    width: 100%;
    opacity: 0.15;
  }
}

@media (max-width: 480px) {
  .site-subtitle {
    font-size: 16px;
  }

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

  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
  }

  .footer-legal-links {
    justify-content: center;
  }
}