/* Основные переменные и настройки */
:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #e0e7ff;
    --primary-dark: #3730a3;
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-color: #3b82f6;
    --secondary-hover: #2563eb;
    --accent-color: #06b6d4;
    --accent-hover: #0891b2;
    --success-color: #10b981;
    --success-light: #d1fae5;
    --warning-color: #f59e0b;
    --warning-light: #fef3c7;
    --danger-color: #ef4444;
    --danger-hover: #dc2626;
    --danger-light: #fee2e2;
    --dark-color: #1e293b;
    --dark-light: #334155;
    --light-color: #f8fafc;
    --light-gray: #e2e8f0;
    --gray-color: #94a3b8;
    --gray-dark: #64748b;
    --white: #ffffff;
    --whatsapp-color: #25D366;
    --whatsapp-dark: #128C7E;
    --telegram-color: #0088cc;
    --telegram-dark: #005f8a;
    --favorite-color: #f97316;
    --favorite-dark: #ea580c;
    --chat-color: #8b5cf6;
    --chat-dark: #7c3aed;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    --border-radius-sm: 8px;
    --border-radius: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 20px;
    --border-radius-2xl: 24px;
    --border-radius-full: 9999px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #f6f8fc 0%, #e9ecef 100%);
    color: #1e293b;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Контейнер объявления */
.ad-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    animation: fadeInUp 0.6s ease-out;
}

/* Шапка объявления */
.ad-header-section {
    background: var(--white);
    padding: 35px;
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-lg);
    margin-bottom: 25px;
    position: relative;
    overflow: hidden;
}

.ad-header-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
}

.ad-title {
    color: var(--dark-color);
    margin: 0 0 25px;
    font-size: 2.5rem;
    font-weight: 800;
    text-align: center;
    position: relative;
    padding-bottom: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ad-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 4px;
    background: var(--primary-gradient);
    border-radius: 2px;
}

/* Мета-информация */
.ad-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    color: var(--gray-dark);
    font-size: 0.95rem;
}

.meta-left, .meta-right {
    display: flex;
    gap: 15px;
    align-items: center;
    flex-wrap: wrap;
}

.ad-date, .ad-views, .ad-id {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: var(--light-color);
    border-radius: var(--border-radius-full);
    transition: var(--transition);
    border: 1px solid transparent;
}

.ad-date:hover, .ad-views:hover, .ad-id:hover {
    background: var(--white);
    border-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.ad-date i, .ad-views i, .ad-id i {
    color: var(--primary-color);
    font-size: 1.1rem;
}

.meta-text {
    font-weight: 600;
    color: var(--dark-light);
}

.views-count {
    font-weight: 700;
    color: var(--primary-color);
    background: var(--primary-light);
    padding: 2px 10px;
    border-radius: var(--border-radius-full);
    font-size: 0.9rem;
}

/* Основное содержимое */
.ad-content {
    display: flex;
    flex-direction: column;
    gap: 30px;
    background: var(--white);
    padding: 35px;
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-lg);
    margin-bottom: 25px;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin: 0 0 25px 0;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--light-gray);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--primary-gradient);
    border-radius: 3px;
}

.section-title i {
    color: var(--primary-color);
    font-size: 1.3rem;
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    border-radius: 50%;
}

/* Галерея фото */
.photo-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
    aspect-ratio: 4/3;
    cursor: pointer;
    border: 2px solid transparent;
}

.gallery-item:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(79, 70, 229, 0.9) 0%, rgba(118, 75, 162, 0.6) 50%, rgba(0,0,0,0) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    opacity: 0;
    transition: var(--transition);
    transform: translateY(10px);
}

.gallery-item:hover .image-overlay {
    opacity: 1;
    transform: translateY(0);
}

.image-overlay i {
    color: white;
    font-size: 2.5rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    animation: pulse 2s infinite;
}

.image-overlay span {
    color: white;
    font-size: 0.9rem;
    font-weight: 500;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* Характеристики */
.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 15px;
}

.spec-item {
    display: flex;
    align-items: center;
    padding: 18px 20px;
    background: var(--light-color);
    border-radius: var(--border-radius-lg);
    transition: var(--transition);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.spec-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--primary-gradient);
    opacity: 0;
    transition: var(--transition);
}

.spec-item:hover {
    background: var(--white);
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.spec-item:hover::before {
    opacity: 1;
}

.spec-item.highlight {
    background: linear-gradient(135deg, #e0e7ff 0%, #c7d2fe 100%);
    border: 2px solid var(--primary-color);
}

.spec-label {
    font-weight: 600;
    color: var(--dark-light);
    margin-right: 15px;
    min-width: 100px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.spec-label i {
    color: var(--primary-color);
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
}

.spec-value {
    color: var(--dark-color);
    font-weight: 600;
    font-size: 1rem;
    flex: 1;
}

.spec-value.price {
    color: var(--primary-color);
    font-weight: 800;
    font-size: 1.3rem;
}

/* Описание */
.ad-description {
    padding: 25px;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--light-gray);
    min-height: 120px;
}

.ad-description p {
    margin: 0;
    line-height: 1.8;
    color: var(--dark-light);
    font-size: 1.05rem;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* Действия с объявлением */
.ad-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    flex-wrap: wrap;
    gap: 15px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--border-radius-full);
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    gap: 10px;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

.btn i {
    font-size: 1.2rem;
}

.btn-back {
    background: var(--dark-color);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-back:hover {
    background: var(--dark-light);
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.owner-actions {
    display: flex;
    gap: 15px;
}

.btn-edit {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-edit:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.btn-delete {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-delete:hover {
    background: linear-gradient(135deg, #f56565 0%, #ef4444 100%);
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

/* ============================================ */
/* СЕКЦИЯ КОНТАКТОВ ПРОДАВЦА */
/* ============================================ */
.contact-section-wrapper {
    margin-bottom: 25px;
}

.contact-section-card {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-lg);
    padding: 35px;
    transition: var(--transition);
}

.contact-section-card:hover {
    box-shadow: var(--shadow-xl);
}

/* Заголовок с аватаром */
.contact-header {
    margin-bottom: 30px;
}

.contact-avatar-section {
    display: flex;
    align-items: center;
    gap: 20px;
}

.contact-avatar {
    width: 80px;
    height: 80px;
    min-width: 80px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.contact-avatar::after {
    content: '';
    position: absolute;
    bottom: 3px;
    right: 3px;
    width: 18px;
    height: 18px;
    background: var(--success-color);
    border-radius: 50%;
    border: 3px solid var(--white);
}

.contact-avatar i {
    font-size: 3rem;
    color: white;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.contact-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin: 0;
}

.contact-status {
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-dot {
    width: 10px;
    height: 10px;
    background: var(--success-color);
    border-radius: 50%;
    animation: pulse 2s infinite;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

.status-text {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--success-color);
}

/* Сетка кнопок контактов */
.contact-buttons-row {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

/* Базовый стиль кнопки контакта */
.contact-btn-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 20px;
    border-radius: var(--border-radius);
    border: none;
    font-size: 0.95rem;
    font-weight: 600;
    color: white;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.contact-btn-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.contact-btn-link:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.contact-btn-link:hover::before {
    opacity: 1;
}

.contact-btn-link:active {
    transform: translateY(-1px);
}

.contact-btn-link i {
    font-size: 1.3rem;
    transition: var(--transition);
}

.contact-btn-link:hover i {
    transform: scale(1.15);
}

/* WhatsApp кнопка */
.whatsapp-link {
    background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
}

.whatsapp-link:hover {
    background: linear-gradient(135deg, #2ae071 0%, #15a389 100%);
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
}

/* Telegram кнопка */
.telegram-link {
    background: linear-gradient(135deg, #0088cc 0%, #005f8a 100%);
}

.telegram-link:hover {
    background: linear-gradient(135deg, #00a3f5 0%, #0077b3 100%);
    box-shadow: 0 8px 25px rgba(0, 136, 204, 0.4);
}

/* Кнопка показа телефона */
.phone-link {
    background: linear-gradient(135deg, #4f46e5 0%, #3730a3 100%);
}

.phone-link:hover {
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    box-shadow: 0 8px 25px rgba(79, 70, 229, 0.4);
}

/* Кнопка чата */
.chat-link {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
}

.chat-link:hover {
    background: linear-gradient(135deg, #a78bfa 0%, #8b5cf6 100%);
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.4);
}

/* Кнопка избранного */
.favorite-link {
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
}

.favorite-link:hover {
    background: linear-gradient(135deg, #fb923c 0%, #f97316 100%);
    box-shadow: 0 8px 25px rgba(249, 115, 22, 0.4);
}

/* Блок с номером телефона */
.phone-number-reveal {
    margin-top: 15px;
    animation: slideDown 0.4s ease-out;
}

.phone-number-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    padding: 18px 25px;
    background: linear-gradient(135deg, #e0e7ff 0%, #c7d2fe 100%);
    border-radius: var(--border-radius);
    border: 2px solid var(--primary-color);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--dark-color);
    box-shadow: var(--shadow-md);
    flex-wrap: wrap;
}

.phone-number-content i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.copy-phone-btn {
    padding: 8px 18px;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: var(--border-radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
}

.copy-phone-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

/* ============================================ */
/* ЧАТ МОДАЛЬНОЕ ОКНО - ЕДИНЫЙ НАБОР СТИЛЕЙ */
/* ============================================ */
.chat-modal {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 420px;
    height: 600px;
    max-height: calc(100vh - 40px);
    background: var(--white);
    border-radius: var(--border-radius-2xl);
    box-shadow: var(--shadow-2xl);
    z-index: 1000;
    display: none;
    flex-direction: column;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    transform: translateY(20px) scale(0.95);
}

.chat-modal.modal-open {
    display: flex;
    opacity: 1;
    transform: translateY(0) scale(1);
}

.chat-modal.modal-minimized {
    height: 70px;
}

.chat-modal-container {
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* Шапка чата */
.chat-modal-header {
    background: var(--primary-gradient);
    color: white;
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-md);
}

.chat-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.chat-header-avatar {
    width: 42px;
    height: 42px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.chat-header-details {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.chat-header-name {
    font-weight: 700;
    font-size: 1rem;
}

.chat-status-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    opacity: 0.9;
}

.status-circle {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #fbbf24;
    animation: pulse 2s infinite;
}

.chat-header-controls {
    display: flex;
    gap: 8px;
}

.chat-control-btn {
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.15);
    border: none;
    color: white;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

.chat-control-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

/* Область сообщений */
.chat-messages-area {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    background: #f9fafb;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.chat-messages-area::-webkit-scrollbar {
    width: 6px;
}

.chat-messages-area::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages-area::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}

.chat-messages-area::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Состояния чата */
.chat-empty,
.chat-loading-state,
.chat-error-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 15px;
    height: 100%;
    text-align: center;
    color: var(--gray-dark);
}

.chat-empty-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--primary-color);
}

.loading-spinner-icon {
    font-size: 2rem;
    color: var(--primary-color);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.chat-error-state i {
    font-size: 2.5rem;
    color: var(--danger-color);
}

.chat-retry-btn {
    padding: 10px 24px;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: var(--border-radius-full);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.chat-retry-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Сообщения */
.chat-message-item {
    display: flex;
    flex-direction: column;
    max-width: 80%;
    animation: messageSlideIn 0.3s ease-out;
}

.chat-message-item.from-seller {
    align-self: flex-start;
}

.chat-message-item.from-buyer {
    align-self: flex-end;
    align-items: flex-end;
}

.chat-message-bubble {
    padding: 12px 18px;
    border-radius: 20px;
    word-wrap: break-word;
    box-shadow: var(--shadow-sm);
    position: relative;
}

.from-seller .chat-message-bubble {
    background: var(--white);
    color: var(--dark-color);
    border-bottom-left-radius: 4px;
    border: 1px solid var(--light-gray);
}

.from-buyer .chat-message-bubble {
    background: var(--primary-gradient);
    color: white;
    border-bottom-right-radius: 4px;
}

.message-sender-name {
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 4px;
    opacity: 0.8;
}

.message-body {
    font-size: 0.9rem;
    line-height: 1.5;
}

.message-timestamp {
    font-size: 0.7rem;
    margin-top: 6px;
    opacity: 0.6;
    text-align: right;
}

/* Системные сообщения */
.chat-system-msg {
    text-align: center;
    padding: 8px;
}

.system-msg-inner {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--light-color);
    border-radius: var(--border-radius-full);
    font-size: 0.8rem;
    color: var(--gray-dark);
    border: 1px solid var(--light-gray);
}

.system-msg-inner i {
    color: var(--primary-color);
    font-size: 0.9rem;
}

/* Поле ввода */
.chat-input-section {
    padding: 16px;
    background: var(--white);
    border-top: 1px solid var(--light-gray);
}

.chat-input-row {
    display: flex;
    gap: 10px;
    align-items: center;
}

.chat-text-input {
    flex: 1;
    padding: 12px 20px;
    border: 2px solid var(--light-gray);
    border-radius: var(--border-radius-full);
    outline: none;
    font-size: 0.9rem;
    transition: var(--transition);
    font-family: 'Inter', sans-serif;
}

.chat-text-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.chat-text-input:disabled {
    background: var(--light-color);
    cursor: not-allowed;
    opacity: 0.6;
}

.chat-send-btn {
    width: 48px;
    height: 48px;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.chat-send-btn:hover:not(:disabled) {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.chat-send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Плавающая кнопка чата */
.chat-floating-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    cursor: pointer;
    z-index: 999;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.chat-floating-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl);
}

/* Анимации */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.8;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Утилиты */
.text-center { text-align: center; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }

/* Адаптивный дизайн */
@media (max-width: 1200px) {
    .ad-container { padding: 15px; }
    .ad-content, .contact-section-card, .ad-header-section { padding: 25px; }
}

@media (max-width: 992px) {
    .ad-title { font-size: 2rem; }
    .photo-gallery { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
    .specs-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
    .contact-buttons-row { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
    .chat-modal { width: 380px; height: 550px; }
}

@media (max-width: 768px) {
    .ad-container { padding: 10px; }
    .ad-title { font-size: 1.8rem; }
    .ad-meta { flex-direction: column; align-items: flex-start; }
    .meta-left { flex-direction: column; width: 100%; gap: 10px; }
    .specs-grid { grid-template-columns: 1fr; }
    .ad-actions { flex-direction: column; gap: 12px; }
    .owner-actions { width: 100%; justify-content: space-between; }
    .btn-back { width: 100%; justify-content: center; }
    .contact-buttons-row { grid-template-columns: 1fr; }
    .contact-avatar-section { flex-direction: column; text-align: center; }
    .contact-info { align-items: center; }
    .chat-modal { 
        width: 100%; 
        height: 100vh; 
        max-height: 100vh; 
        right: 0; 
        bottom: 0; 
        border-radius: 0;
    }
    .photo-gallery { grid-template-columns: 1fr; }
    .phone-number-content { flex-direction: column; gap: 10px; }
}

@media (max-width: 576px) {
    .ad-title { font-size: 1.5rem; }
    .ad-content, .contact-section-card, .ad-header-section { padding: 18px; }
    .section-title { font-size: 1.2rem; }
    .spec-item { padding: 14px 16px; }
    .spec-label { min-width: 80px; font-size: 0.85rem; }
    .spec-value { font-size: 0.9rem; }
    .btn, .contact-btn-link { padding: 12px 20px; font-size: 0.9rem; }
    .contact-avatar { width: 60px; height: 60px; min-width: 60px; }
    .contact-avatar i { font-size: 2.2rem; }
    .contact-name { font-size: 1.3rem; }
}

/* Доступность */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

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

::selection {
    background: var(--primary-light);
    color: var(--primary-dark);
}

/* Скроллбар страницы */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--light-gray);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb {
    background: var(--gray-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-dark);
}
/* ============================================ */
/* ФОРСИРОВАННЫЕ СТИЛИ ДЛЯ ЧАТА - ВСЕГДА ВИДИМ */
/* ============================================ */

/* Гарантированное отображение чата */
#chatModal,
.chat-modal {
    position: fixed !important;
    bottom: 20px !important;
    right: 20px !important;
    top: auto !important;
    left: auto !important;
    width: 420px !important;
    height: 600px !important;
    max-height: calc(100vh - 40px) !important;
    background: white !important;
    border-radius: 16px !important;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3) !important;
    z-index: 9999999 !important;
    flex-direction: column !important;
    overflow: hidden !important;
    transition: all 0.3s ease !important;
}

/* Когда открыт - показываем */
#chatModal[style*="display: flex"],
#chatModal.modal-open,
.chat-modal[style*="display: flex"],
.chat-modal.modal-open {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
}

/* Когда закрыт - скрываем */
#chatModal[style*="display: none"],
.chat-modal[style*="display: none"] {
    display: none !important;
}

/* Контейнер чата */
#chatModal .chat-modal-container,
.chat-modal .chat-modal-container {
    display: flex !important;
    flex-direction: column !important;
    height: 100% !important;
    width: 100% !important;
}

/* Шапка чата */
#chatModal .chat-modal-header,
.chat-modal .chat-modal-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    padding: 16px 20px !important;
    flex-shrink: 0 !important;
}

/* Область сообщений */
#chatModal .chat-messages-area,
.chat-modal .chat-messages-area {
    flex: 1 !important;
    overflow-y: auto !important;
    padding: 15px !important;
    background: #f9fafb !important;
}

/* Поле ввода */
#chatModal .chat-input-section,
.chat-modal .chat-input-section {
    padding: 15px !important;
    background: white !important;
    border-top: 1px solid #e2e8f0 !important;
    flex-shrink: 0 !important;
}

/* Сообщения */
#chatModal .chat-message-item,
.chat-modal .chat-message-item {
    margin-bottom: 12px !important;
}

#chatModal .chat-message-bubble,
.chat-modal .chat-message-bubble {
    padding: 10px 15px !important;
    border-radius: 18px !important;
    max-width: 85% !important;
}

#chatModal .from-seller .chat-message-bubble,
.chat-modal .from-seller .chat-message-bubble {
    background: white !important;
    border: 1px solid #e2e8f0 !important;
}

#chatModal .from-buyer .chat-message-bubble,
.chat-modal .from-buyer .chat-message-bubble {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    color: white !important;
}

/* Кнопки */
#chatModal .chat-send-btn,
.chat-modal .chat-send-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    width: 44px !important;
    height: 44px !important;
    border-radius: 50% !important;
}

#chatModal .chat-text-input,
.chat-modal .chat-text-input {
    border: 2px solid #e2e8f0 !important;
    border-radius: 30px !important;
    padding: 12px 18px !important;
}

#chatModal .chat-text-input:focus,
.chat-modal .chat-text-input:focus {
    border-color: #667eea !important;
    outline: none !important;
}

/* Кнопка закрытия */
#chatModal .chat-control-btn,
.chat-modal .chat-control-btn {
    background: rgba(255,255,255,0.2) !important;
    border-radius: 50% !important;
    width: 32px !important;
    height: 32px !important;
    color: white !important;
}

/* Анимация при открытии */
@keyframes chatSlideIn {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

#chatModal.modal-open,
.chat-modal.modal-open {
    animation: chatSlideIn 0.3s ease-out !important;
}

/* Мобильная версия */
@media (max-width: 768px) {
    #chatModal,
    .chat-modal {
        width: 100% !important;
        height: 100% !important;
        max-height: 100% !important;
        bottom: 0 !important;
        right: 0 !important;
        border-radius: 0 !important;
    }
}

/* Индикатор загрузки */
.loading-spinner-icon {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Отладка - временно показать границы чата (убрать после решения проблемы) */
/*
#chatModal {
    border: 3px solid red !important;
}
*/