/* ==========================================================================
   1. БАЗОВЫЕ ПЕРЕМЕННЫЕ И НАСТРОЙКИ (Светлая тема по умолчанию)
   ========================================================================== */
: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: 10px;
  --spacing: 1.6rem;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
  --shadow-hover: 0 8px 25px rgba(0, 0, 0, 0.08);
  --transition: all 0.3s ease;
}

/* ==========================================================================
   2. ПЕРЕМЕННЫЕ ДЛЯ ТЕМНОЙ ТЕМЫ (.dark-mode)
   ========================================================================== */
.dark-mode {
  --color-bg: #121212;
  --color-text: #f5f5f5;
  --color-accent: #64b5f6;
  --color-accent-hover: #90caf9;
  --color-light: #1e1e1e;
  --card-bg: #1e1e1e;
  --shadow: 0 4px 20px rgba(255, 255, 255, 0.05);
  --shadow-hover: 0 8px 25px rgba(255, 255, 255, 0.08);
}

/* ==========================================================================
   3. ГЛОБАЛЬНЫЕ СТИЛИ
   ========================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html, body {
  height: 100%;
  border: none;
  outline: none;
}
body {
  font-family: var(--font-main);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  border: none;
  outline: none;
  margin: 0;
  padding: 0;
}
.main-content {
  padding: var(--spacing) 0;
  border: none;
  outline: none;
  background-color: var(--color-bg);
}
.page-section {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 var(--spacing);
  border: none;
  outline: none;
}

/* ==========================================================================
   4. СТИЛИ ЗАГОЛОВКОВ
   ========================================================================== */
.section-title {
  text-align: center;
  font-weight: 600;
  font-size: 2rem;
  margin-top: 4rem;
  margin-bottom: var(--spacing);
  color: var(--color-accent);
  border: none;
  outline: none;
}

/* ==========================================================================
   5. ОСНОВНОЙ КОНТЕНТ СТРАНИЦЫ MTO
   ========================================================================== */
.mto-container {
  width: 100%;
  margin-top: 2rem;
  border: none;
  outline: none;
}
.mto-text-info {
  margin-bottom: 2.5rem;
}
.mto-text-info > p {
  margin-bottom: 1.5rem;
  line-height: 1.7;
  text-align: justify;
}
.mto-text-info > p:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   6. СТИЛИ КНОПОК (btn)
   ========================================================================== */
.document-buttons-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin: 1.5rem 0;
  width: 100%;
  border: none;
  outline: none;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 30px;
  border-radius: 25px;
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  border: 2px solid transparent;
  cursor: pointer;
  font-size: 1rem;
  min-width: 250px;
  outline: none;
  text-align: center;
  box-sizing: border-box;
}
.btn--primary {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
  box-shadow: 0 4px 10px rgba(30, 136, 229, 0.3);
  border: 2px solid var(--color-accent);
  outline: none;
}
.btn--primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  transform: translateY(-3px);
  box-shadow: 0 6px 15px rgba(30, 136, 229, 0.4);
}
.btn--outline {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
  outline: none;
  text-align: left;
  padding: 15px 20px;
  line-height: 1.5;
}
.btn--outline:hover {
  background: var(--color-accent);
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 4px 10px rgba(30, 136, 229, 0.2);
}
.btn i {
  margin-right: 0.5rem;
  min-width: 20px;
  text-align: center;
}

/* ==========================================================================
   7. СТИЛИ ПЛИТОК (mto-card) - Вертикальная раскладка
   ========================================================================== */
.mto-grid {
  display: flex;
  flex-direction: column;
  gap: var(--spacing);
  width: 100%;
  margin: 2rem 0;
  border: none;
  outline: none;
}
.mto-card {
  background-color: var(--color-light);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: var(--transition);
  box-shadow: var(--shadow);
  border-left: 4px solid var(--color-accent);
  border: none;
  outline: none;
  box-sizing: border-box;
  width: 100%;
}
.mto-card:hover {
  background-color: color-mix(in srgb, var(--color-light) 70%, var(--color-accent) 30%);
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}
.card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-accent);
  margin: 0 0 0.8rem 0;
  line-height: 1.3;
  border: none;
  outline: none;
}
.card-subtitle {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 0.8rem 0;
  line-height: 1.4;
  border: none;
  outline: none;
}
.card-details {
  font-size: 1rem;
  color: var(--color-text);
  opacity: 0.9;
  margin: 0 0 0.8rem 0;
  line-height: 1.6;
  border: none;
  outline: none;
}
.card-details:last-child {
    margin-bottom: 0;
}
.card-equipment-list {
  margin: 0 0 0.8rem 1.2rem;
  padding-left: 0;
  list-style-type: disc;
  color: var(--color-text);
  opacity: 0.9;
  line-height: 1.6;
}
.card-equipment-list li {
  margin-bottom: 0.3rem;
}
.card-equipment-list li:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   8. СТИЛИ ДЛЯ ТЕМНОЙ ТЕМЫ (.dark-mode)
   ========================================================================== */
.dark-mode body,
.dark-mode .main-content,
.dark-mode .page-section {
  background-color: var(--color-bg);
  color: var(--color-text);
}
.dark-mode .btn--outline {
  color: var(--color-accent);
  border-color: var(--color-accent);
}
.dark-mode .btn--outline:hover {
  background: var(--color-accent);
}
.dark-mode .mto-card {
  background-color: var(--card-bg);
  border-left-color: var(--color-accent);
  box-shadow: var(--shadow);
}
.dark-mode .mto-card:hover {
  background-color: color-mix(in srgb, var(--card-bg) 70%, var(--color-accent) 30%);
  box-shadow: var(--shadow-hover);
}
.dark-mode .card-title,
.dark-mode .card-subtitle,
.dark-mode .card-details,
.dark-mode .card-equipment-list,
.dark-mode .card-equipment-list li {
  color: var(--color-text);
}
.dark-mode .mto-text-info > p {
  color: var(--color-text);
  opacity: 0.9;
}

/* ==========================================================================
   9. СТИЛИ АККОРДЕОНА (Выпадающий список)
   ========================================================================== */
.accordion-wrapper {
  width: 100%;
  margin: 1.5rem 0;
  border: none;
  outline: none;
}
.accordion {
  background-color: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  border: 1px solid var(--color-light);
  box-sizing: border-box;
}
.accordion-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 1rem 1.5rem;
  background-color: color-mix(in srgb, var(--color-light) 70%, white 30%);
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  transition: var(--transition);
  text-align: left;
  outline: none;
  box-sizing: border-box;
}
.accordion-header:hover {
  background-color: color-mix(in srgb, var(--color-light) 50%, white 50%);
}
.accordion-title {
  flex-grow: 1;
  padding-right: 1rem;
  border: none;
  outline: none;
}
.accordion-icon {
  transition: transform 0.3s ease;
  border: none;
  outline: none;
  color: var(--color-accent);
}
.accordion-header.active .accordion-icon {
  transform: rotate(180deg);
}
.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out, padding 0.3s ease;
  padding: 0 1.5rem;
  border: none;
  outline: none;
  box-sizing: border-box;
  background-color: var(--card-bg);
}
.accordion-content.open {
  max-height: 1000px;
  padding: 1rem 1.5rem;
}
.accordion-content > p {
  margin-bottom: 1rem;
  line-height: 1.6;
}
.accordion-content > p:last-child {
  margin-bottom: 0;
}

/* === DARK THEME CORRECTIONS FOR ACCORDION (.dark-mode) === */
.dark-mode .accordion {
  border-color: #333;
}
.dark-mode .accordion-header {
  background-color: color-mix(in srgb, var(--color-light) 70%, black 30%);
  color: var(--color-text);
}
.dark-mode .accordion-header:hover {
  background-color: color-mix(in srgb, var(--color-light) 50%, black 50%);
}
.dark-mode .accordion-icon {
  color: var(--color-accent);
}
.dark-mode .accordion-content {
  background-color: var(--card-bg);
}

/* ==========================================================================
   10. АДАПТИВНОСТЬ (MEDIA QUERIES)
   ========================================================================== */
@media (max-width: 768px) {
  .page-section {
    padding: 0 1rem;
  }
  .section-title {
    font-size: 1.6rem;
    margin-top: 2.5rem;
    margin-bottom: 1.5rem;
  }
  .document-buttons-grid {
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
  }
  .btn {
    width: 100%;
    max-width: 100%;
    font-size: 0.95rem;
    padding: 12px 15px;
    min-width: auto;
  }
  .btn--outline {
    padding: 12px 15px;
  }
  .mto-card {
    padding: 1.2rem;
  }
  .card-title {
    font-size: 1.1rem;
    margin-bottom: 0.6rem;
  }
  .card-subtitle {
    font-size: 1rem;
    margin-bottom: 0.6rem;
  }
  .card-details {
    font-size: 0.95rem;
  }
  .mto-text-info > p {
    font-size: 0.95rem;
  }
  .card-equipment-list {
    font-size: 0.95rem;
    margin-left: 1rem;
  }

  .accordion-header {
    padding: 0.8rem 1rem;
    font-size: 1rem;
  }
  .accordion-content {
    padding: 0 1rem;
  }
  .accordion-content.open {
    padding: 0.8rem 1rem;
  }
  .accordion-content > p {
    font-size: 0.95rem;
  }
}
@media (max-width: 480px) {
  .section-title {
    font-size: 1.4rem;
    margin-top: 2rem;
  }
  .btn {
    font-size: 0.9rem;
    padding: 10px 12px;
  }
  .mto-card {
    padding: 1rem;
  }
  .card-title {
    font-size: 1rem;
  }
  .card-subtitle {
    font-size: 0.95rem;
  }
  .card-details {
    font-size: 0.9rem;
  }
  .mto-text-info > p {
    font-size: 0.9rem;
  }
  .card-equipment-list {
    font-size: 0.9rem;
    margin-left: 0.8rem;
  }
}