/**
 * Стили для системы реакций на статьи блога
 * 
 * Компоненты:
 * - Контейнер реакций
 * - Кнопки реакций с эмодзи
 * - Счётчики
 * - Анимации
 * - Состояния (активная, загрузка, отключено)
 * - Адаптивность
 * - Тёмная тема
 */

/* ===== Секция реакций ===== */
.reactions-section-padded {
    background: var(--bg-primary, #ffffff);
    padding: 2rem 0 1rem 0;
    margin-top: -1rem;
}

/* ===== Контейнер реакций ===== */
.article-reactions {
    margin: 0;
    padding: 1.5rem;
    border-radius: 12px;
    background: var(--bg-secondary, #f9fafb);
    border: 1px solid var(--border-color, #e5e7eb);
    transition: all 0.3s ease;
}

/* Темная тема для секции реакций */
@media (prefers-color-scheme: dark) {
    .reactions-section-padded {
        background: var(--bg-primary, #1a1a1a);
    }
    
    .article-reactions {
        background: var(--bg-secondary, #2d2d2d);
        border-color: var(--border-color, #404040);
    }
}

.article-reactions h4,
.article-reactions h3 {
    margin: 0 0 1rem 0;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary, #111827);
}

/* ===== Группа кнопок ===== */
.reaction-buttons {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    align-items: center;
}

/* ===== Кнопка реакции ===== */
.reaction-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    border: 2px solid var(--border-color, #e5e7eb);
    border-radius: 50px;
    background: var(--bg-primary, #ffffff);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary, #374151);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

/* Эмодзи иконка */
.reaction-icon {
    font-size: 1.5rem;
    line-height: 1;
    display: inline-block;
    transition: transform 0.2s ease;
}

/* Счётчик */
.reaction-count {
    font-size: 0.875rem;
    font-weight: 600;
    min-width: 1.5rem;
    text-align: center;
    color: var(--text-secondary, #6b7280);
    transition: all 0.2s ease;
}

/* ===== Состояния кнопки ===== */

/* Hover */
.reaction-button:hover:not(:disabled):not(.reaction-loading) {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color, #3b82f6);
    background: var(--bg-hover, #f3f4f6);
}

.reaction-button:hover:not(:disabled):not(.reaction-loading) .reaction-icon {
    transform: scale(1.2) rotate(5deg);
}

/* Active (нажато) */
.reaction-button:active:not(:disabled):not(.reaction-loading) {
    transform: translateY(-1px) scale(1.02);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
}

/* Selected (пользователь выбрал эту реакцию) */
.reaction-button.reaction-active {
    background: linear-gradient(135deg, var(--primary-color, #3b82f6), var(--primary-dark, #2563eb));
    border-color: var(--primary-color, #3b82f6);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
    transform: translateY(-2px);
}

.reaction-button.reaction-active .reaction-count {
    color: #ffffff;
    font-weight: 700;
}

.reaction-button.reaction-active .reaction-icon {
    transform: scale(1.15);
    filter: drop-shadow(0 0 4px rgba(255, 255, 255, 0.5));
}

/* Loading */
.reaction-button.reaction-loading {
    opacity: 0.6;
    cursor: wait;
    pointer-events: none;
}

.reaction-button.reaction-loading .reaction-icon {
    animation: reaction-pulse 1s ease-in-out infinite;
}

/* Disabled */
.reaction-button:disabled,
.reaction-button.reaction-disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

/* Focus (для accessibility) */
.reaction-button:focus-visible {
    outline: 2px solid var(--primary-color, #3b82f6);
    outline-offset: 2px;
}

/* ===== Анимации ===== */

/* Пульсация при загрузке */
@keyframes reaction-pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

/* Обновление счётчика */
.reaction-count.count-updated {
    animation: count-bump 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes count-bump {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.4);
        color: var(--primary-color, #3b82f6);
    }
}

/* Появление контейнера */
.article-reactions {
    animation: fadeInUp 0.5s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Уведомления ===== */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    z-index: 10000;
    font-weight: 500;
    max-width: 400px;
    animation: slideIn 0.3s ease-out;
}

.notification-success {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
}

.notification-error {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
}

.notification-info {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* ===== Адаптивность ===== */

/* Планшеты */
@media (max-width: 768px) {
    .article-reactions {
        padding: 1.25rem;
        margin: 1.5rem 0;
    }

    .reaction-buttons {
        gap: 0.5rem;
    }

    .reaction-button {
        padding: 0.625rem 1rem;
        font-size: 0.9375rem;
    }

    .reaction-icon {
        font-size: 1.375rem;
    }

    .reaction-count {
        font-size: 0.8125rem;
    }

    .notification {
        top: 10px;
        right: 10px;
        left: 10px;
        max-width: none;
    }
}

/* Мобильные устройства */
@media (max-width: 480px) {
    .article-reactions {
        padding: 1rem;
        margin: 1rem 0;
        border-radius: 8px;
    }

    .article-reactions h4,
    .article-reactions h3 {
        font-size: 1rem;
        margin-bottom: 0.75rem;
    }

    .reaction-buttons {
        gap: 0.5rem;
        justify-content: center;
    }

    .reaction-button {
        padding: 0.5rem 0.875rem;
        font-size: 0.875rem;
        flex: 0 0 auto;
    }

    .reaction-icon {
        font-size: 1.25rem;
    }

    .reaction-count {
        font-size: 0.75rem;
        min-width: 1.25rem;
    }

    /* Упрощённая анимация для мобильных */
    .reaction-button:hover:not(:disabled):not(.reaction-loading) {
        transform: scale(1.05);
    }
}

/* ===== Тёмная тема ===== */
@media (prefers-color-scheme: dark) {
    .article-reactions {
        background: var(--bg-secondary-dark, #1f2937);
        border-color: var(--border-color-dark, #374151);
    }

    .article-reactions h4,
    .article-reactions h3 {
        color: var(--text-primary-dark, #f9fafb);
    }

    .reaction-button {
        background: var(--bg-primary-dark, #111827);
        border-color: var(--border-color-dark, #374151);
        color: var(--text-primary-dark, #e5e7eb);
    }

    .reaction-button:hover:not(:disabled):not(.reaction-loading) {
        background: var(--bg-hover-dark, #1f2937);
        border-color: var(--primary-color, #3b82f6);
    }

    .reaction-count {
        color: var(--text-secondary-dark, #9ca3af);
    }

    .reaction-button.reaction-active .reaction-count {
        color: #ffffff;
    }
}

/* Dark theme class (для JavaScript переключения) */
.dark-theme .article-reactions {
    background: var(--bg-secondary-dark, #1f2937);
    border-color: var(--border-color-dark, #374151);
}

.dark-theme .article-reactions h4,
.dark-theme .article-reactions h3 {
    color: var(--text-primary-dark, #f9fafb);
}

.dark-theme .reaction-button {
    background: var(--bg-primary-dark, #111827);
    border-color: var(--border-color-dark, #374151);
    color: var(--text-primary-dark, #e5e7eb);
}

.dark-theme .reaction-button:hover:not(:disabled):not(.reaction-loading) {
    background: var(--bg-hover-dark, #1f2937);
    border-color: var(--primary-color, #3b82f6);
}

.dark-theme .reaction-count {
    color: var(--text-secondary-dark, #9ca3af);
}

.dark-theme .reaction-button.reaction-active .reaction-count {
    color: #ffffff;
}

/* ===== Дополнительные стили ===== */

/* Tooltip для длинного названия реакции */
.reaction-button[title]:hover::after {
    content: attr(title);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.5rem 0.75rem;
    background: rgba(0, 0, 0, 0.9);
    color: white;
    font-size: 0.875rem;
    white-space: nowrap;
    border-radius: 6px;
    margin-bottom: 0.5rem;
    pointer-events: none;
    z-index: 1000;
}

/* Разделитель перед реакциями */
.article-reactions::before {
    content: '';
    display: block;
    width: 100%;
    height: 1px;
    background: linear-gradient(
        to right,
        transparent,
        var(--border-color, #e5e7eb) 20%,
        var(--border-color, #e5e7eb) 80%,
        transparent
    );
    margin-bottom: 1.5rem;
}

/* Статистика реакций (опционально) */
.reactions-stats {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color, #e5e7eb);
    font-size: 0.875rem;
    color: var(--text-secondary, #6b7280);
}

.reactions-total {
    font-weight: 600;
    color: var(--text-primary, #111827);
}

/* ===== Accessibility ===== */

/* Высокая контрастность */
@media (prefers-contrast: high) {
    .reaction-button {
        border-width: 3px;
    }

    .reaction-button.reaction-active {
        border-width: 3px;
        box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
    }
}

/* Уменьшенное движение */
@media (prefers-reduced-motion: reduce) {
    .reaction-button,
    .reaction-icon,
    .reaction-count,
    .article-reactions,
    .notification {
        animation: none !important;
        transition: none !important;
    }

    .reaction-button:hover:not(:disabled):not(.reaction-loading) {
        transform: none;
    }

    .reaction-button.reaction-active {
        transform: none;
    }
}

/* Screen readers */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}