/**
 * Стили для сайта подачи общественных петиций
 * Государственный проект — строгий, официальный дизайн
 * 
 * Палитра:
 * - Фон: #FFFFFF, #F7F8FA
 * - Текст: #1A1F2B, #5C6370
 * - Акцент: #0052CC (государственный синий)
 * - Границы: #D4D8DD
 * - Успех: #0D8050
 */

/* ==========================================================================
   CSS ПЕРЕМЕННЫЕ
   ========================================================================== */
:root {
  /* Цвета */
  --color-bg: #FFFFFF;
  --color-bg-alt: #F7F8FA;
  --color-bg-card: #FFFFFF;
  
  --color-text: #1A1F2B;
  --color-text-secondary: #5C6370;
  --color-text-muted: #8A919C;
  
  --color-accent: #0052CC;
  --color-accent-hover: #003D99;
  --color-accent-light: #E6F0FF;
  
  --color-success: #0D8050;
  --color-success-bg: #E6F4EC;
  
  --color-border: #D4D8DD;
  --color-border-light: #E8EAED;
  
  /* Тени */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.1);
  
  /* Радиусы */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  /* Переходы */
  --transition: 0.2s ease;
  
  /* Ширина контейнера */
  --container-max: 1200px;
  --container-narrow: 900px;
}

/* ==========================================================================
   БАЗОВЫЕ СТИЛИ
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: 'PT Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 1rem;
  color: var(--color-text);
  background-color: var(--color-bg-alt);
  min-height: 100vh;
}

/* ==========================================================================
   ТИПОГРАФИКА
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.5em;
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
}

h1 {
  font-size: 1.75rem;
}

h2 {
  font-size: 1.375rem;
}

h3 {
  font-size: 1.125rem;
}

p {
  margin: 0 0 1em;
  line-height: 1.6;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ==========================================================================
   ШАПКА САЙТА
   ========================================================================== */
.header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0.875rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.header__brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
}

.header__brand:hover {
  text-decoration: none;
}

.header__logo {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.header__logo svg {
  width: 24px;
  height: 24px;
  fill: #FFFFFF;
}

.header__title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text);
}

.header__subtitle {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  margin-top: 0.125rem;
}

/* Кнопка "К петициям" для мобильных */
.header__mobile-btn {
  display: inline-flex;
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
}

@media (min-width: 768px) {
  .header__mobile-btn {
    display: none;
  }
}

.header__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.875rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

.header__badge-dot {
  width: 8px;
  height: 8px;
  background: var(--color-success);
  border-radius: 50%;
}

/* ==========================================================================
   КОНТЕЙНЕР
   ========================================================================== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

.container--narrow {
  max-width: var(--container-narrow);
}

/* ==========================================================================
   СЕКЦИЯ ЗАГОЛОВКА СТРАНИЦЫ
   ========================================================================== */
.page-header {
  margin-bottom: 1.5rem;
}

.page-header__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.page-header__title {
  font-size: 1.625rem;
  font-weight: 700;
  margin-bottom: 0.375rem;
}

.page-header__desc {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  max-width: 600px;
  margin: 0;
}

/* ==========================================================================
   КАРТОЧКИ СЕТКИ (Главная страница)
   ========================================================================== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.25rem;
}

@media (min-width: 768px) {
  .cards-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .cards-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

.card {
  display: block;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  text-decoration: none;
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.card__image {
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--color-bg-alt);
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  display: block;
}

.card__body {
  padding: 0.875rem;
  border-top: 1px solid var(--color-border-light);
}

.card__name {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--color-text);
}

.card__link {
  font-size: 0.75rem;
  color: var(--color-accent);
}

/* ==========================================================================
   СТРАНИЦА ПЕТИЦИИ
   ========================================================================== */
.petition-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

/* На мобильных: sidebar сверху */
.petition-sidebar {
  order: -1;
}

.petition-main {
  order: 1;
}

@media (min-width: 768px) {
  .petition-layout {
    grid-template-columns: 1.5fr 1fr;
    align-items: start;
  }
  
  /* На десктопе: sidebar справа */
  .petition-sidebar {
    order: 1;
  }
  
  .petition-main {
    order: 0;
  }
}

/* Основной блок */
.petition-main {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  order: 1;
}

.petition-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  .petition-hero {
    grid-template-columns: minmax(200px, 280px) 1fr;
    padding: 1.25rem;
  }
}

.petition-photo {
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--color-bg-alt);
}

@media (min-width: 640px) {
  .petition-photo {
    border-radius: var(--radius-md);
    max-height: 420px;
  }
}

.petition-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  display: block;
}

.petition-info {
  padding: 1.25rem;
}

@media (min-width: 640px) {
  .petition-info {
    padding: 0;
  }
}

.petition-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  line-height: 1.2;
}

.petition-story {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 1rem;
  max-height: 400px;
  overflow-y: auto;
  font-size: 0.9375rem;
  line-height: 1.7;
}

.petition-story p {
  margin: 0 0 1rem;
}

.petition-story p:last-child {
  margin-bottom: 0;
}

/* Скроллбар для истории */
.petition-story::-webkit-scrollbar {
  width: 6px;
}

.petition-story::-webkit-scrollbar-track {
  background: var(--color-border-light);
  border-radius: 3px;
}

.petition-story::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

.petition-story::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* Боковая панель */
.petition-sidebar {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
}

.petition-sidebar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.petition-sidebar__title {
  font-size: 1.0625rem;
  font-weight: 700;
}

.petition-sidebar__badge {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  background: var(--color-bg-alt);
  padding: 0.375rem 0.625rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

/* Прогресс блок */
.progress-block {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 1rem;
}

.progress-stats {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 0.625rem;
}

.progress-count {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-text);
}

.progress-goal {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

.progress-bar {
  height: 10px;
  background: var(--color-border-light);
  border-radius: 5px;
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  background: var(--color-accent);
  border-radius: 5px;
  transition: width 0.3s ease;
}

/* ==========================================================================
   КНОПКИ
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.4;
  text-align: center;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn--primary {
  background: var(--color-accent);
  color: #FFFFFF;
  border-color: var(--color-accent);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #FFFFFF;
  text-decoration: none;
}

.btn--secondary {
  background: var(--color-bg);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn--secondary:hover {
  background: var(--color-bg-alt);
  color: var(--color-text);
  text-decoration: none;
}

.btn--block {
  display: flex;
  width: 100%;
}

.btn-group {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

/* ==========================================================================
   МОДАЛЬНОЕ ОКНО
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 1000;
}

.modal-overlay.is-open {
  display: flex;
}

.modal {
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.modal__header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.modal__title {
  font-size: 1.0625rem;
  font-weight: 700;
  margin: 0;
}

.modal__subtitle {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-top: 0.25rem;
}

.modal__close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: 1.25rem;
  line-height: 1;
  transition: all var(--transition);
  flex-shrink: 0;
}

.modal__close:hover {
  background: var(--color-border-light);
  color: var(--color-text);
}

.modal__body {
  padding: 1.25rem;
  overflow-y: auto;
}

/* ==========================================================================
   ФОРМЫ
   ========================================================================== */
.form-group {
  margin-bottom: 1rem;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 0.375rem;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-family: inherit;
  font-size: 0.9375rem;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
  line-height: 1.5;
}

.form-actions {
  margin-top: 1.25rem;
}

/* ==========================================================================
   УВЕДОМЛЕНИЯ (TOAST)
   ========================================================================== */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--color-success);
  color: #FFFFFF;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 1100;
}

.toast.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* ==========================================================================
   АДАПТИВНОСТЬ
   ========================================================================== */
@media (max-width: 767px) {
  .header__inner {
    flex-wrap: wrap;
  }
  
  .header__badge {
    order: 3;
    width: 100%;
    justify-content: center;
    margin-top: 0.5rem;
  }
  
  .page-header__top {
    flex-direction: column;
    align-items: stretch;
  }
  
  .petition-name {
    font-size: 1.25rem;
  }
}

@media (max-width: 479px) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.875rem;
  }
  
  .card__body {
    padding: 0.75rem;
  }
}

/* ==========================================================================
   СТАТИСТИКА
   ========================================================================== */
.stats-section {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (min-width: 640px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-item {
  text-align: center;
  padding: 1rem 0.5rem;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-top: 0.25rem;
}

/* ==========================================================================
   ИНФОРМАЦИОННЫЕ БЛОКИ
   ========================================================================== */
.info-section {
  margin-bottom: 2rem;
}

.info-section__title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.info-section__title svg {
  width: 20px;
  height: 20px;
  fill: var(--color-accent);
}

.info-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .info-cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

.info-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.info-card__icon {
  width: 40px;
  height: 40px;
  background: var(--color-accent-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.75rem;
}

.info-card__icon svg {
  width: 20px;
  height: 20px;
  fill: var(--color-accent);
}

.info-card__title {
  font-size: 0.9375rem;
  font-weight: 700;
  margin-bottom: 0.375rem;
}

.info-card__text {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin: 0;
}

/* ==========================================================================
   АЛЕРТЫ И УВЕДОМЛЕНИЯ
   ========================================================================== */
.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.alert--info {
  background: var(--color-accent-light);
  border: 1px solid var(--color-accent);
}

.alert--success {
  background: var(--color-success-bg);
  border: 1px solid var(--color-success);
}

.alert__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
}

.alert--info .alert__icon {
  fill: var(--color-accent);
}

.alert--success .alert__icon {
  fill: var(--color-success);
}

.alert__content {
  flex: 1;
}

.alert__title {
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.alert__text {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin: 0;
}

/* ==========================================================================
   РАЗДЕЛИТЕЛЬ СЕКЦИЙ
   ========================================================================== */
.section-divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 2rem 0 1.5rem;
}

.section-divider__line {
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.section-divider__title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ==========================================================================
   ФУТЕР
   ========================================================================== */
.footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  margin-top: 3rem;
}

.footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 2rem 1.25rem;
}

.footer__top {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .footer__top {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer__brand {
  max-width: 320px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.footer__logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-accent);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer__logo-icon svg {
  width: 20px;
  height: 20px;
  fill: #FFFFFF;
}

.footer__logo-text {
  font-size: 0.9375rem;
  font-weight: 700;
}

.footer__desc {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

.footer__nav-title {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
}

.footer__nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer__nav-item {
  margin-bottom: 0.625rem;
}

.footer__nav-link {
  font-size: 0.875rem;
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition);
}

.footer__nav-link:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.footer__bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (min-width: 640px) {
  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.footer__copy {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin: 0;
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer__legal-link {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ==========================================================================
   КАТЕГОРИИ / ТАБЫ
   ========================================================================== */
.tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
}

.tab {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 100px;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.tab:hover {
  background: var(--color-bg-alt);
  color: var(--color-text);
}

.tab.is-active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #FFFFFF;
}

.tab__count {
  font-size: 0.75rem;
  padding: 0.125rem 0.375rem;
  background: rgba(0, 0, 0, 0.1);
  border-radius: 100px;
}

.tab.is-active .tab__count {
  background: rgba(255, 255, 255, 0.2);
}

/* ==========================================================================
   УТИЛИТЫ
   ========================================================================== */
.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;
}

.text-center {
  text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }

/* Подключение шрифта PT Sans */
@import url('https://fonts.googleapis.com/css2?family=PT+Sans:wght@400;700&display=swap');