/* ==========================================
   БАЗОВЫЕ СТИЛИ И ПЕРЕМЕННЫЕ
   Бренд MindWorld: основной цвет #FF7C00, фон #FDFCF5, шрифт Montserrat
   Оболочка скопирована из Cabinet-schulte-table (визуальный эталон),
   стили игры Шульте убраны. Новых цветов, шрифтов и кнопок не вводить.
   ========================================== */

:root {
  --primary: #ff7c00;
  --primary-hover: #e06600;
  --secondary: #4a90e2;
  --success: #4caf50;
  --error: #f44336;
  --warning: #ff9800;
  --text-primary: #2c3e50;
  --text-secondary: #7d733a;
  --bg-light: #fdfcf5;
  --bg-white: #ffffff;
  --border: #e0e0e0;
  --shadow: rgba(0, 0, 0, 0.1);
  --radius: 16px;
  --spacing: 1rem;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Montserrat", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text-primary);
  background: var(--bg-light);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ==========================================
   HEADER
   ========================================== */

.app-header {
  background: var(--primary);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 8px var(--shadow);
}

.app-header__brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.app-header__logo {
  width: 56px;
  height: 56px;
  object-fit: contain;
}

.app-header__titles {
  display: flex;
  flex-direction: column;
}

.app-header__title {
  font-family: "Baloo 2", cursive;
  font-size: 1.6rem;
  color: var(--bg-white);
  margin: 0;
  line-height: 1.2;
}

.app-header__tagline {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 400;
  margin: 0.25rem 0 0 0;
}

.app-header__languages {
  display: inline-flex;
  align-items: center;
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: 50px;
  padding: 4px;
}

.language-btn {
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.5rem 1.2rem;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.25s ease;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.language-btn:hover {
  color: white;
  background: rgba(255, 255, 255, 0.15);
}

.language-btn--active {
  background: var(--bg-white) !important;
  color: var(--primary) !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* ==========================================
   MAIN CONTAINER / SCREEN
   ========================================== */

.app-main {
  flex: 1;
  padding: 2rem 1rem;
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

.screen {
  width: 100%;
  max-width: 720px;
  background: var(--bg-white);
  border-radius: var(--radius);
  box-shadow: 0 12px 30px rgba(255, 124, 0, 0.15);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.screen__header { display: flex; flex-direction: column; gap: 4px; }
.screen__title { margin: 0; font-size: 1.5rem; }
.screen__description { margin: 0; color: var(--text-secondary); }
.screen__body,
.screen__content { display: flex; flex-direction: column; gap: 20px; }
.screen__footer { display: flex; gap: 12px; justify-content: flex-end; flex-wrap: wrap; }

/* ==========================================
   STEP INDICATOR (settings → confirmation → game → results)
   ========================================== */

.step-indicator__list {
  display: flex;
  list-style: none;
  flex-wrap: wrap;
  gap: 12px;
}
.step-indicator__item { display: flex; align-items: center; gap: 8px; opacity: 0.5; }
.step-indicator__item--active,
.step-indicator__item--completed { opacity: 1; }
.step-indicator__number {
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem; font-weight: 700; flex-shrink: 0;
}
.step-indicator__label { font-size: 0.85rem; color: var(--text-secondary); }

/* ==========================================
   FORM CONTROLS
   ========================================== */

.form-group { display: flex; flex-direction: column; gap: 8px; }
.classic-settings-block { display: flex; flex-direction: column; gap: 20px; }
.form-group__label { font-weight: 600; }
.form-group__select {
  padding: 10px 14px;
  border: 2px solid var(--border);
  border-radius: 10px;
  font-family: inherit;
  font-size: 1rem;
  background: var(--bg-white);
}

.radio-group,
.form-group__checkboxes {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.radio-label,
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 0.95rem;
}

/* ==========================================
   CONFIRMATION SCREEN
   ========================================== */

.confirmation-list { display: flex; flex-direction: column; gap: 10px; }
.confirmation-list__item {
  display: flex; justify-content: space-between;
  padding: 10px 16px; background: var(--bg-light); border-radius: 10px;
}
.confirmation-list__label { color: var(--text-secondary); }
.confirmation-list__value { font-weight: 700; }
.form__actions { display: flex; justify-content: flex-end; gap: 12px; }

/* ==========================================
   BUTTONS
   ========================================== */

.btn {
  border: none; border-radius: var(--radius); padding: 12px 24px;
  font-weight: 700; font-size: 1rem; cursor: pointer;
  font-family: 'Montserrat', sans-serif;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: var(--primary); color: #fff; }
.btn--primary:hover { background: var(--primary-hover); }
.btn--secondary { background: transparent; color: var(--primary-hover); border: 2px solid var(--primary); }
.btn--large { padding: 14px 32px; font-size: 1.1rem; align-self: flex-start; }
.btn--exit {
  background: transparent; color: var(--text-secondary);
  border: 2px solid var(--border); align-self: center;
  margin-top: 8px;
}

/* ==========================================
   GAME STATUS BAR
   ========================================== */

.game-status {
  display: flex;
  justify-content: space-around;
  background: var(--bg-light);
  border-radius: 12px;
  padding: 12px;
  flex-wrap: wrap;
  gap: 8px;
}
.game-status__item { text-align: center; }
.game-status__label { font-size: 0.75rem; color: var(--text-secondary); text-transform: uppercase; }
.game-status__value { font-size: 1.3rem; font-weight: 700; }
.game-status__value--success { color: var(--success); }
.game-status__value--error { color: var(--error); }

.game-message {
  text-align: center;
  font-size: 1.2rem;
  font-weight: 600;
  min-height: 1.6em;
}

/* ==========================================
   FEEDBACK
   ========================================== */

.feedback {
  text-align: center;
  padding: 14px;
  border-radius: 12px;
  font-weight: 700;
}
.feedback--correct { background: rgba(76, 175, 80, 0.15); color: var(--success); }
.feedback--incorrect { background: rgba(244, 67, 54, 0.12); color: var(--error); }

/* ==========================================
   RESULTS SCREEN
   ========================================== */

.results-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.result-card {
  background: var(--bg-light);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
}
.result-card__value { font-size: 1.6rem; font-weight: 800; }
.result-card__value--primary { color: var(--primary); }
.result-card__value--success { color: var(--success); }
.result-card__value--error { color: var(--error); }
.result-card__label { font-size: 0.85rem; color: var(--text-secondary); margin-top: 4px; }

/* ==========================================
   FOOTER
   ========================================== */

.app-footer {
  text-align: center;
  padding: 1rem;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* ==========================================
   TOAST (components/Toast.js)
   ========================================== */

.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 9999;
}
.toast {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 10px;
  background: var(--bg-white);
  box-shadow: 0 4px 12px var(--shadow);
  opacity: 0;
  transform: translateX(20px);
  transition: all 0.3s ease;
}
.toast--show { opacity: 1; transform: translateX(0); }
.toast--hide { opacity: 0; transform: translateX(20px); }
.toast--error { border-left: 4px solid var(--error); }
.toast--success { border-left: 4px solid var(--success); }
.toast--info { border-left: 4px solid var(--secondary); }
.toast--warning { border-left: 4px solid var(--warning); }
.toast__close { background: none; border: none; cursor: pointer; font-size: 1.1rem; }


/* ==========================================
   RESPONSIVE
   ========================================== */

@media (max-width: 600px) {
  .app-header { padding: 0.75rem 1rem; flex-wrap: wrap; gap: 8px; }
  .app-header__title { font-size: 1.3rem; }
  .screen { padding: 20px; }
  .results-grid { grid-template-columns: 1fr 1fr; }
}

/* ==========================================
   FRACTION QUEST — доп. разметка оболочки
   Только цвета, радиусы и кнопки оболочки выше.
   ========================================== */

/* Длинные испанские/украинские подписи переносятся, а не ломают кнопку */
.btn { white-space: normal; overflow-wrap: anywhere; line-height: 1.25; }

/* Хаб тем (экран home): плитки — обычные .btn--secondary в сетке */
.topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}
.topic-grid .btn { width: 100%; text-align: left; }

/* Лео рядом с заголовком экрана */
.leo-hint { display: flex; align-items: center; gap: 12px; }
.leo-hint__img { width: 64px; height: 64px; object-fit: contain; flex-shrink: 0; }
.leo-hint__text { margin: 0; color: var(--text-secondary); }

/* Заглушка будущего содержимого (PR 0, логики нет) */
.placeholder {
  padding: 24px 16px;
  background: var(--bg-light);
  border-radius: 12px;
  text-align: center;
  color: var(--text-secondary);
}