/* ==========================================================================
   specialties.css – Специальности с модальным окном, аккордеоном и кнопкой «Вверх»
   ========================================================================== */
:root {
  --color-bg: #ffffff;
  --color-text: #333333;
  --color-accent: #1e88e5;
  --color-accent-hover: #1976d2;
  --color-light: #eaeff4;
  --card-bg: #ffffff;
  --font-main: 'Inter', sans-serif;
  --radius: 16px;
  --radius-card: 10px;
  --shadow-sm: 0 4px 12px rgba(0,0,0,0.04);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.06);
  --shadow-lg: 0 16px 40px rgba(0,0,0,0.08);
  --shadow-card: 0 4px 20px rgba(0,0,0,0.04);
  --shadow-card-hover: 0 8px 25px rgba(0,0,0,0.08);
  --transition: 0.25s ease;
  --transition-fast: 0.2s ease;
}

.dark-mode {
  --color-bg: #121212;
  --color-text: #f5f5f5;
  --color-accent: #64b5f6;
  --color-accent-hover: #90caf9;
  --color-light: #1e1e1e;
  --card-bg: #1e1e1e;
  --shadow-sm: 0 4px 12px rgba(255,255,255,0.05);
  --shadow-md: 0 8px 24px rgba(255,255,255,0.06);
  --shadow-lg: 0 16px 40px rgba(255,255,255,0.08);
  --shadow-card: 0 4px 20px rgba(255,255,255,0.05);
  --shadow-card-hover: 0 8px 25px rgba(255,255,255,0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

.main-content { padding: 2rem 0 4rem; }
.page-section { max-width: 1100px; margin: 0 auto; padding: 0 2rem; }
.content-container { display: flex; flex-direction: column; gap: 3rem; }

.section-title {
  text-align: center;
  font-weight: 600;
  font-size: 2.8rem;
  color: var(--color-accent);
  letter-spacing: -0.5px;
}
.page-intro {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
  font-size: 1.15rem;
  color: #555;
}
.dark-mode .page-intro { color: #bbb; }

[data-animate] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s, transform 0.4s;
}
[data-animate].visible { opacity: 1; transform: translateY(0); }

/* Табы */
.specialties-shell {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.tabs-nav {
  display: flex;
  flex-wrap: wrap;
  background: var(--color-light);
  padding: 0.6rem;
  gap: 0.4rem;
  border-bottom: 1px solid rgba(0,0,0,0.05);
}
.tab-btn {
  flex: 1 1 auto;
  padding: 0.75rem 1.2rem;
  border: none;
  background: transparent;
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text);
  border-radius: 12px;
  cursor: pointer;
  transition: all var(--transition);
}
.tab-btn:hover { background: rgba(30,136,229,0.08); color: var(--color-accent); }
.tab-btn.active {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 8px 16px -6px rgba(30,136,229,0.4);
}
.tabs-panels { padding: 2rem; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* Аккордеон */
.specialty-accordion {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.specialty-row {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}
.specialty-row:hover { box-shadow: var(--shadow-md); }

.specialty-header {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.4rem 2rem;
  background: transparent;
  border: none;
  font-family: var(--font-main);
  cursor: pointer;
  text-align: left;
  transition: background 0.2s;
}
.specialty-header:hover { background: rgba(30,136,229,0.03); }

.specialty-name {
  font-weight: 700;
  font-size: 1.2rem;
  color: #1a1a1a;
  flex: 1;
}
.dark-mode .specialty-name { color: #f0f0f0; }

.specialty-chevron {
  flex-shrink: 0;
  transition: transform 0.3s;
  color: var(--color-accent);
}
.specialty-header[aria-expanded="true"] .specialty-chevron {
  transform: rotate(180deg);
}

.specialty-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Квалификация внутри аккордеона */
.specialty-qual-block {
  padding: 1rem 2rem 0.5rem;
  font-size: 1rem;
  color: #333;
}
.dark-mode .specialty-qual-block { color: #ddd; }
.specialty-qual-label { font-weight: 500; margin-right: 0.3rem; }
.specialty-qual-block strong { color: var(--color-accent); }

/* Блок "О будущей профессии" */
.career-info {
  background: #f4f8fc;
  border-radius: 12px;
  margin: 0.5rem 2rem 1.5rem;
  padding: 1.2rem 1.5rem;
}
.dark-mode .career-info { background: #1e2430; }
.career-info__title {
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}
.career-info__text {
  font-size: 0.95rem;
  color: #444;
  line-height: 1.6;
}
.dark-mode .career-info__text { color: #ccc; }

/* Одиночная специальность */
.single-specialty {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}
.single-specialty__name {
  font-size: 2rem;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 1rem;
}
.dark-mode .single-specialty__name { color: #f0f0f0; }
.single-specialty__qual {
  font-size: 1.1rem;
  color: #555;
  margin-bottom: 1.5rem;
}
.single-specialty__qual strong { color: var(--color-accent); }
.single-specialty .career-info {
  margin: 0 0 2rem;
}

/* Сетка преподавателей */
.teachers-grid {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  padding: 0 2rem 2rem;
}

/* Карточка преподавателя */
.teacher-card {
  background: var(--card-bg);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 1.8rem 2rem;
  position: relative;
  transition: var(--transition);
  border: 2px solid transparent;
  overflow: visible;
  cursor: pointer;
  transform: translateY(20px);
  opacity: 0;
  animation: cardSlideIn 0.5s forwards;
}
.teacher-card:nth-child(1) { animation-delay: 0.05s; }
.teacher-card:nth-child(2) { animation-delay: 0.1s; }
.teacher-card:nth-child(3) { animation-delay: 0.15s; }
.teacher-card:nth-child(4) { animation-delay: 0.2s; }
.teacher-card:nth-child(5) { animation-delay: 0.25s; }
@keyframes cardSlideIn {
  to { opacity: 1; transform: translateY(0); }
}

.teacher-card:hover,
.teacher-card:focus-visible {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
  outline: none;
}
.teacher-card:focus-visible {
  border-color: var(--color-accent);
}

/* ПЦК – акцентный синий */
.teacher-card--pcc {
  border-left: 5px solid var(--color-accent);
}
.pcc-badge {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  margin-left: 0.8rem;
  vertical-align: middle;
}
.dark-mode .pcc-badge {
  background: var(--color-accent);
  color: #121212;
}

.teacher-card__accent {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  border-radius: var(--radius-card);
  overflow: hidden;
  opacity: 0;
  transition: var(--transition);
  z-index: -1;
}
.teacher-card__accent::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle at center, rgba(30,136,229,0.1) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.5s;
}
.teacher-card:hover .teacher-card__accent { opacity: 1; }
.teacher-card:hover .teacher-card__accent::before { opacity: 0.4; }

.teacher-main-info {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  position: relative;
}

.teacher-card__decoration {
  position: absolute;
  top: 10px; right: 10px;
  width: 24px; height: 24px;
  opacity: 0.1;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--color-accent);
}
.teacher-card__decoration::after { content: "♪"; }
.teacher-card:hover .teacher-card__decoration {
  opacity: 0.3;
  transform: rotate(15deg) scale(1.1);
}

.teacher-avatar {
  width: 70px; height: 70px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-light), color-mix(in srgb, var(--color-light) 70%, #000 30%));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--color-accent);
  flex-shrink: 0;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  transition: var(--transition-fast);
  position: relative;
  overflow: hidden;
}
.teacher-card:hover .teacher-avatar { transform: scale(1.05); box-shadow: 0 6px 15px rgba(0,0,0,0.15); }
.teacher-avatar::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.4), transparent 70%);
  opacity: 0;
  transition: opacity 0.3s;
}
.teacher-card:hover .teacher-avatar::before { opacity: 1; }

.teacher-text-info { flex: 1; }
.teacher-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  line-height: 1.2;
}
.teacher-card:hover .teacher-name { color: var(--color-accent); }
.teacher-position {
  font-size: 1.1rem;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 0.75rem;
}
.teacher-department {
  font-size: 0.95rem;
  color: color-mix(in srgb, var(--color-text) 60%, transparent 40%);
  background: var(--color-light);
  padding: 0.4rem 1rem;
  border-radius: 20px;
  display: inline-block;
  font-weight: 500;
}
.teacher-card:hover .teacher-department {
  background: color-mix(in srgb, var(--color-light) 70%, var(--color-accent) 15%);
  transform: translateY(-2px);
}
.no-teachers {
  color: #888;
  font-style: italic;
  padding: 1rem 2rem;
}

/* Модальное окно */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.6);
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}
.modal-overlay.open { opacity: 1; visibility: visible; }

.modal-dialog {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 2rem 2.5rem;
  max-width: 500px;
  width: 90%;
  position: relative;
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
  transform: scale(0.9);
  transition: transform 0.3s ease;
}
.modal-overlay.open .modal-dialog { transform: scale(1); }

.modal-close {
  position: absolute;
  top: 0.8rem; right: 1rem;
  background: none;
  border: none;
  font-size: 1.8rem;
  color: var(--color-text);
  opacity: 0.5;
  cursor: pointer;
}
.modal-close:hover { opacity: 1; }

.modal-title { font-size: 1.8rem; font-weight: 700; color: var(--color-accent); margin-bottom: 0.8rem; }
.modal-position { font-size: 1.2rem; color: var(--color-accent); font-weight: 500; margin-bottom: 0.5rem; }
.modal-department { display: inline-block; background: var(--color-light); padding: 0.3rem 1rem; border-radius: 20px; font-size: 0.95rem; margin-bottom: 1.5rem; }
.modal-info-item { margin-bottom: 1.2rem; }
.modal-info-label { display: block; font-weight: 600; font-size: 0.85rem; color: var(--color-accent); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 0.2rem; }
.modal-info-value { font-size: 1.1rem; color: var(--color-text); }

/* Кнопка "Вверх" */
.scroll-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: scale(0.8);
  transition: opacity 0.3s, visibility 0.3s, transform 0.3s;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  z-index: 2000;
}
.scroll-top.visible { opacity: 1; visibility: visible; transform: scale(1); }
.scroll-top:hover { background: var(--color-accent-hover); transform: scale(1.05); }
.scroll-top svg { fill: currentColor; }

/* Адаптивность */
@media (max-width: 768px) {
  .tabs-nav { flex-direction: column; }
  .tab-btn { width: 100%; }
  .tabs-panels { padding: 1rem; }
  .specialty-header { padding: 1.2rem 1.2rem; flex-wrap: wrap; }
  .specialty-body { padding: 0; }
  .specialty-qual-block { padding: 1rem 1.2rem 0.5rem; }
  .career-info { margin-left: 1.2rem; margin-right: 1.2rem; }
  .teachers-grid { padding: 0 1.2rem 1.5rem; }
  .single-specialty { padding: 1.5rem; }
  .single-specialty__name { font-size: 1.6rem; }
  .teacher-card { padding: 1.2rem; }
  .teacher-main-info { flex-direction: column; align-items: center; text-align: center; gap: 1rem; }
  .teacher-avatar { width: 60px; height: 60px; font-size: 1.5rem; margin: 0 auto; }
  .teacher-name { font-size: 1.3rem; }
  .teacher-position { font-size: 1rem; }
  .teacher-department { margin: 0 auto; }
  .modal-dialog { padding: 1.5rem; }
  .modal-title { font-size: 1.5rem; }
}