/* TACT Website - Stylesheet - WCAG 2.1 AA Compliant */

:root {
  --color-primary: #1B3A56;
  --color-primary-dark: #132b40;
  --color-primary-light: #eef2f6;
  --color-secondary: #ee7a23;
  --color-secondary-light: #fef3e8;
  --color-text: #1a1a2e;
  --color-text-light: #4a4a5a;
  --color-bg: #ffffff;
  --color-bg-alt: #f5f6fa;
  --color-border: #d0d4e0;
  --color-success: #2e7d32;
  --color-success-bg: #e8f5e9;
  --color-error: #c62828;
  --color-error-bg: #ffebee;
  --color-focus: #ee7a23;
  --color-accent: #ee7a23;
  --color-accent-dark: #d56a15;
  --color-white: #ffffff;
  --font-body: 'Open Sans', 'Segoe UI', 'Noto Sans', sans-serif;
  --max-width: 1140px;
  --radius: 6px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --transition: 0.2s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: underline; }
a:hover { color: var(--color-primary-dark); }

/* WCAG: Focus indicators with fallback */
*:focus { outline: 3px solid var(--color-focus); outline-offset: 2px; }
*:focus:not(:focus-visible) { outline: none; }
:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 2px; }

/* WCAG: Skip navigation */
.skip-link {
  position: absolute; top: -100%; left: 1rem;
  background: var(--color-primary); color: var(--color-white);
  padding: 0.75rem 1.5rem; z-index: 9999; font-weight: 600;
  border-radius: 0 0 var(--radius) var(--radius); text-decoration: none;
}
.skip-link:focus { top: 0; }

/* WCAG: Screen reader only */
.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;
}

/* Language visibility - scoped to content elements, NOT buttons */
div[data-lang], p[data-lang], section[data-lang], article[data-lang], li[data-lang] { display: none; }
div[data-lang].active, p[data-lang].active, section[data-lang].active, article[data-lang].active, li[data-lang].active { display: block; }
span[data-lang] { display: none; }
span[data-lang].active { display: inline; }

/* Container */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 1.5rem; }

/* Header */
.site-header {
  background: var(--color-white); border-bottom: 3px solid var(--color-primary);
  position: sticky; top: 0; z-index: 100; box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.75rem 0; gap: 1rem;
}
.site-logo {
  display: flex; align-items: center; gap: 0.75rem;
  text-decoration: none; color: var(--color-primary);
  font-weight: 700; font-size: 1.25rem; flex-shrink: 0;
}

/* Navigation */
.main-nav { display: flex; align-items: center; gap: 0.25rem; }
.main-nav a {
  padding: 0.6rem 1rem; text-decoration: none; color: #999999;
  font-weight: 600; font-size: 0.9rem; text-transform: uppercase;
  letter-spacing: 0.03em; transition: color var(--transition); white-space: nowrap;
}
.main-nav a:hover, .main-nav a[aria-current="page"] {
  color: var(--color-secondary);
}

/* Language Switcher - Dropdown */
.lang-switcher { display: flex; align-items: center; flex-shrink: 0; }
.lang-switcher select {
  padding: 0.4rem 2rem 0.4rem 0.75rem;
  font-size: 0.85rem; font-weight: 600;
  font-family: var(--font-body); cursor: pointer;
  border: 2px solid #1B3A56; border-radius: var(--radius);
  background: var(--color-white); color: #1B3A56;
  appearance: none; -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23003399' stroke-width='2' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.6rem center;
  background-size: 10px;
  transition: all var(--transition);
}
.lang-switcher select:hover { background-color: var(--color-primary-light); }
.lang-switcher select:focus { outline: 3px solid var(--color-focus); outline-offset: 2px; }

/* TTS Button */
.tts-btn {
  display: inline-flex; align-items: center; gap: 0.4rem;
  background: #ee7a23; color: var(--color-white);
  border: none; padding: 0.5rem 1rem; border-radius: var(--radius);
  cursor: pointer; font-family: var(--font-body); font-size: 0.85rem;
  font-weight: 600; transition: background var(--transition); flex-shrink: 0;
}
.tts-btn:hover { background: #d56a15; }
.tts-btn.speaking { background: var(--color-error); }
.tts-btn svg { width: 18px; height: 18px; fill: currentColor; }

/* Mobile Menu */
.menu-toggle {
  display: none; background: none; border: 2px solid var(--color-primary);
  border-radius: var(--radius); padding: 0.4rem; cursor: pointer; color: var(--color-primary);
}
.menu-toggle svg { width: 24px; height: 24px; display: block; }
.header-controls { display: flex; align-items: center; gap: 0.75rem; }

/* Hero */
.hero {
  background: linear-gradient(135deg, #1B3A56 0%, #264a6b 100%);
  color: var(--color-white); padding: 4rem 0 3.5rem; text-align: center;
  border-bottom: 5px solid #ee7a23;
}
.hero h1 { font-size: 2.25rem; font-weight: 700; margin-bottom: 0.5rem; line-height: 1.2; }
.hero .subtitle { font-size: 1.15rem; opacity: 0.92; max-width: 700px; margin: 0.75rem auto 0; line-height: 1.6; }
.hero .eu-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: rgba(255,255,255,0.15); padding: 0.5rem 1.25rem;
  border-radius: 50px; font-size: 0.85rem; margin-top: 1.5rem; font-weight: 500;
}
.hero .eu-badge img { height: 28px; width: auto; display: inline-block; }

/* Sections */
.section { padding: 3rem 0; }
.section-alt { background: var(--color-bg-alt); }
.section h2 { font-size: 1.5rem; font-weight: 700; color: var(--color-primary); margin-bottom: 1.25rem; line-height: 1.3; padding-bottom: 0.5rem; border-bottom: 2px solid #ee7a23; display: inline-block; }
.section h3 { font-size: 1.25rem; font-weight: 600; color: var(--color-text); margin-bottom: 0.75rem; }

/* Pillars */
.pillars { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; margin-top: 1.5rem; }
.pillar-card {
  background: var(--color-white); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 1.75rem; box-shadow: var(--shadow-sm);
  border-top: 4px solid #ee7a23;
}
.pillar-card h3 { color: #ee7a23; margin-bottom: 0.75rem; }

/* Achievements */
.achievements { list-style: none; display: grid; gap: 0.75rem; margin-top: 1rem; }
.achievements li {
  display: flex; align-items: flex-start; gap: 0.75rem; padding: 0.75rem 1rem;
  background: var(--color-white); border-radius: var(--radius); border-left: 4px solid #ee7a23;
}
.achievements li .icon { flex-shrink: 0; font-size: 1.2rem; }

/* Project Details */
.project-details { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.25rem; margin-top: 1.5rem; }
.detail-item {
  background: var(--color-white); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 1.25rem; text-align: center;
}
.detail-item .label { font-size: 0.85rem; color: var(--color-text-light); font-weight: 500; text-transform: uppercase; letter-spacing: 0.04em; }
.detail-item .value { font-size: 1.35rem; font-weight: 700; color: #ee7a23; margin-top: 0.25rem; }

/* News Cards */
.news-card {
  background: var(--color-white); border: 1px solid var(--color-border);
  border-radius: var(--radius); overflow: hidden; margin-bottom: 2.5rem; box-shadow: var(--shadow-sm);
}
.news-card-header { background: var(--color-primary); color: var(--color-white); padding: 1.25rem 1.5rem; border-left: 5px solid #ee7a23; }
.news-card-header h2 { color: var(--color-white); margin-bottom: 0.25rem; font-size: 1.3rem; border: none; padding: 0; display: block; }
.news-card-meta { font-size: 0.9rem; opacity: 0.9; }
.news-card-body { padding: 1.5rem; }
.news-card-body h3 { margin-top: 1.5rem; margin-bottom: 0.5rem; color: var(--color-primary); }
.news-card-body h3:first-child { margin-top: 0; }
.news-card-body p { margin-bottom: 0.75rem; }
.news-card-body ul { margin: 0.5rem 0 0.75rem 1.5rem; }
.news-card-body ul li { margin-bottom: 0.35rem; }

/* Photo Gallery */
.photo-gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1rem; margin: 1.5rem 0; }
.photo-gallery img { border-radius: var(--radius); width: 100%; aspect-ratio: 4/3; object-fit: cover; border: 1px solid var(--color-border); }

/* Placeholder */
.placeholder-card {
  background: var(--color-bg-alt); border: 2px dashed var(--color-border);
  border-radius: var(--radius); padding: 3rem 2rem; text-align: center; color: var(--color-text-light);
}
.placeholder-card .icon { font-size: 2.5rem; margin-bottom: 0.75rem; }

/* Learning Language Pre-step */
.learning-lang-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem; margin-top: 1rem;
}
.learning-lang-card {
  display: flex; align-items: center; gap: 1rem;
  padding: 1.25rem 1.5rem; background: var(--color-white);
  border: 2px solid var(--color-border); border-radius: var(--radius);
  cursor: pointer; transition: all var(--transition);
  font-family: var(--font-body); font-size: 1rem; color: var(--color-text);
  text-align: left; box-shadow: var(--shadow-sm);
}
.learning-lang-card:hover {
  border-color: var(--color-primary); box-shadow: var(--shadow-md); transform: translateY(-2px);
}
.learning-lang-flag {
  background: var(--color-primary); color: var(--color-white);
  width: 44px; height: 44px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.9rem; flex-shrink: 0;
}
.learning-lang-name { font-weight: 600; font-size: 1.05rem; }

/* Learning Tabs */
.learning-tabs { display: flex; gap: 0.5rem; margin-bottom: 2rem; border-bottom: 2px solid var(--color-border); }
.learning-tabs button {
  background: none; border: none; border-bottom: 3px solid transparent;
  padding: 0.75rem 1.5rem; font-family: var(--font-body); font-size: 1rem;
  font-weight: 600; color: var(--color-text-light); cursor: pointer;
  transition: all var(--transition); margin-bottom: -2px;
}
.learning-tabs button:hover { color: #ee7a23; }
.learning-tabs button.active { color: #ee7a23; border-bottom-color: #ee7a23; }

/* Quiz Modules */
.module-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 1.25rem; }
.module-card {
  background: var(--color-white); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 1.5rem; cursor: pointer;
  transition: all var(--transition); box-shadow: var(--shadow-sm);
  display: flex; align-items: flex-start; gap: 1rem;
}
.module-card:hover { box-shadow: var(--shadow-md); border-color: var(--color-primary); transform: translateY(-2px); }
.module-card .module-num {
  background: #ee7a23; color: var(--color-white);
  width: 48px; height: 48px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1.2rem; flex-shrink: 0;
}
.module-card .module-info h3 { font-size: 1rem; margin-bottom: 0.25rem; }
.module-card .module-info p { font-size: 0.85rem; color: var(--color-text-light); }

/* Quiz Interface */
.quiz-container { max-width: 760px; margin: 0 auto; }
.quiz-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; flex-wrap: wrap; gap: 0.75rem; }
.quiz-progress { font-size: 0.9rem; color: var(--color-text-light); font-weight: 500; }
.progress-bar { width: 100%; height: 6px; background: var(--color-border); border-radius: 3px; overflow: hidden; margin-bottom: 1.5rem; }
.progress-bar-fill { height: 100%; background: #ee7a23; border-radius: 3px; transition: width 0.4s ease; }
.quiz-question { background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 2rem; box-shadow: var(--shadow-sm); }
.quiz-question h3 { font-size: 1.15rem; margin-bottom: 1.5rem; line-height: 1.5; }
.quiz-options { display: grid; gap: 0.75rem; }
.quiz-option {
  display: block; width: 100%; text-align: left;
  background: var(--color-bg-alt); border: 2px solid var(--color-border);
  border-radius: var(--radius); padding: 1rem 1.25rem;
  font-family: var(--font-body); font-size: 0.95rem; line-height: 1.5;
  cursor: pointer; transition: all var(--transition); color: var(--color-text);
}
.quiz-option:hover:not(:disabled) { border-color: var(--color-primary); background: var(--color-primary-light); }
.quiz-option.correct { background: var(--color-success-bg); border-color: var(--color-success); color: var(--color-success); font-weight: 600; }
.quiz-option.incorrect { background: var(--color-error-bg); border-color: var(--color-error); color: var(--color-error); }
.quiz-option:disabled { cursor: default; opacity: 0.85; }
.quiz-option.correct:disabled, .quiz-option.incorrect:disabled { opacity: 1; }
.quiz-feedback { margin-top: 1.25rem; padding: 1rem; border-radius: var(--radius); font-weight: 600; text-align: center; }
.quiz-feedback.correct { background: var(--color-success-bg); color: var(--color-success); }
.quiz-feedback.incorrect { background: var(--color-error-bg); color: var(--color-error); }
.quiz-nav { display: flex; justify-content: center; margin-top: 1.5rem; }

/* Quiz Results */
.quiz-results { text-align: center; padding: 2.5rem; background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.quiz-results h2 { margin-bottom: 1rem; border: none; padding: 0; display: block; }
.results-score { font-size: 3rem; font-weight: 700; color: #ee7a23; margin: 1rem 0; }
.results-breakdown { display: flex; justify-content: center; gap: 2.5rem; margin: 1.5rem 0; }
.results-breakdown .correct-count { color: var(--color-success); }
.results-breakdown .incorrect-count { color: var(--color-error); }
.results-breakdown span { font-size: 1.1rem; font-weight: 600; }

/* Downloads */
.download-category { margin-bottom: 2rem; }
.download-category h2 { padding-bottom: 0.5rem; border-bottom: 2px solid var(--color-border); margin-bottom: 1rem; font-size: 1.15rem; display: block; }
.download-list { list-style: none; display: grid; gap: 0.5rem; }
.download-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.75rem 1rem; background: var(--color-bg-alt); border-radius: var(--radius); gap: 1rem;
}
.download-item .file-name { font-weight: 500; flex: 1; }
.download-item .file-type {
  font-size: 0.75rem; font-weight: 600; color: var(--color-text-light);
  text-transform: uppercase; background: var(--color-white);
  padding: 0.15rem 0.5rem; border-radius: 3px; border: 1px solid var(--color-border);
}
.download-item a {
  display: inline-flex; align-items: center; gap: 0.3rem;
  background: var(--color-primary); color: var(--color-white);
  padding: 0.4rem 1rem; border-radius: var(--radius); text-decoration: none;
  font-size: 0.85rem; font-weight: 600; transition: background var(--transition); flex-shrink: 0;
}
.download-item a:hover { background: #1a1a1a; color: var(--color-white); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.65rem 1.5rem; border-radius: var(--radius);
  font-family: var(--font-body); font-size: 0.95rem; font-weight: 600;
  cursor: pointer; transition: all var(--transition); text-decoration: none; border: none;
}
.btn-primary { background: var(--color-primary); color: var(--color-white); }
.btn-primary:hover { background: #1a1a1a; color: var(--color-white); }
.btn-outline { background: transparent; border: 2px solid #ee7a23; color: #ee7a23; }
.btn-outline:hover { background: #ee7a23; color: var(--color-white); }
.btn-back { background: var(--color-bg-alt); border: 1px solid var(--color-border); color: var(--color-text); }
.btn-back:hover { background: var(--color-border); }

/* Contact */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; }
.contact-card {
  background: var(--color-white); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 1.75rem; box-shadow: var(--shadow-sm); text-align: center;
}
.contact-card.lead { border-top: 4px solid #ee7a23; }
.contact-card img { max-height: 70px; margin: 0 auto 1rem; }
.contact-card h2 { color: var(--color-primary); margin-bottom: 0.5rem; font-size: 1.25rem; }
.contact-card .role { font-size: 0.85rem; color: var(--color-text-light); font-weight: 500; margin-bottom: 0.75rem; }
.contact-card p { font-size: 0.9rem; margin-bottom: 0.35rem; }
.contact-card a { color: #ee7a23; text-decoration: underline; }

/* Footer - NO destructive filter on logos */
.site-footer {
  background: #1B3A56; color: rgba(255,255,255,0.9);
  padding: 2.5rem 0 1.5rem; margin-top: 3rem;
}
.footer-logos {
  display: flex; align-items: center; justify-content: center;
  gap: 2rem; flex-wrap: wrap; margin-bottom: 1.5rem;
}
.footer-logos img {
  height: 50px; width: auto;
  background: rgba(255,255,255,0.92); padding: 6px 10px; border-radius: 4px;
}
.footer-disclaimer {
  text-align: center; font-size: 0.8rem; line-height: 1.6; opacity: 0.8;
  max-width: 800px; margin: 0 auto; padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.15);
}
.footer-erasmus { text-align: center; margin-top: 1rem; font-size: 0.8rem; opacity: 0.7; }

/* Responsive */
@media (max-width: 768px) {
  .hero { padding: 2.5rem 0 2rem; }
  .hero h1 { font-size: 1.65rem; }
  .hero .subtitle { font-size: 1rem; }
  .section { padding: 2rem 0; }
  .section h2 { font-size: 1.4rem; }
  .header-inner { flex-wrap: wrap; }
  .menu-toggle { display: block; }
  .nav-area { display: none; width: 100%; flex-direction: column; order: 10; padding-top: 0.75rem; border-top: 1px solid var(--color-border); }
  .nav-area.open { display: flex; }
  .main-nav { flex-direction: column; width: 100%; }
  .main-nav a { width: 100%; padding: 0.75rem 1rem; }
  .quiz-question { padding: 1.25rem; }
  .photo-gallery { grid-template-columns: 1fr 1fr; }
  .results-breakdown { flex-direction: column; gap: 0.75rem; }
  .download-item { flex-direction: column; align-items: flex-start; }
  .footer-logos img { height: 38px; padding: 4px 6px; }
}
@media (max-width: 480px) {
  .photo-gallery { grid-template-columns: 1fr; }
  .module-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .lang-switcher button { padding: 0.25rem 0.4rem; font-size: 0.75rem; }
}


/* Page Banner - raris.org style decorative strip */
.page-banner {
  background: #1B3A56;
  background-image: linear-gradient(135deg, rgba(255,255,255,0.05) 25%, transparent 25%, transparent 50%, rgba(255,255,255,0.05) 50%, rgba(255,255,255,0.05) 75%, transparent 75%);
  background-size: 40px 40px;
  padding: 1.5rem 0;
  color: #fff;
  border-bottom: 4px solid #ee7a23;
}
.page-banner h1 { font-size: 1.75rem; font-weight: 700; color: #fff; margin: 0; border: none; padding: 0; display: block; }