/* ============== RESET & БАЗОВЫЕ СТИЛИ ============== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Цвета из Figma */
    --color-primary: #4A6CF7;
    --color-primary-light: #7B93FA;
    --color-accent: #F5C518;
    --color-bg-start: #6366F1;
    --color-bg-end: #A855F7;
    --color-cyan: #00E5FF;
    --color-card-bg: rgba(255, 255, 255, 0.7);
    --color-card-bg-hover: rgba(255, 255, 255, 0.85);
    --color-text: #171717;
    --color-text-secondary: #545454;
    --color-white: #ffffff;
    
    /* Размеры */
    --app-max-width: 420px;
    --card-radius: 29px;
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Шрифты */
    --font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Тени */
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-card-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
    
    /* Переходы */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background: #E8EEF5;
    min-height: 100vh;
    color: var(--color-text);
    line-height: 1.5;
    display: flex;
    justify-content: center;
    padding: 20px 0;
}

/* ============== КОНТЕЙНЕР ПРИЛОЖЕНИЯ ============== */
.app-container {
    width: 100%;
    max-width: var(--app-max-width);
    min-height: calc(100vh - 40px);
    background: linear-gradient(165deg, 
        #5B8DEF 0%, 
        #6B9BF2 15%,
        #8FB8F5 30%, 
        #B5D3F8 45%,
        #D0E4FB 60%,
        #E0EFFD 75%,
        #D6E8FC 85%,
        #C5DFFA 100%
    );
    border-radius: 32px;
    padding: var(--spacing-lg);
    padding-bottom: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
}

/* ============== ШАПКА ============== */
.header {
    padding: var(--spacing-xl) 0;
    color: var(--color-white);
}

.header__title {
    font-size: 45px;
    font-weight: 700;
    line-height: 40px;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.header__subtitle {
    font-size: 0.95rem;
    font-weight: 400;
    opacity: 0.9;
    line-height: 1.4;
}

/* ============== КАРТОЧКИ УСЛУГ ============== */
.services {
    display: flex;
    flex-direction: column;
    gap: 0; /* Убираем gap, используем отрицательный margin */
    flex: 1;
}

.service-card {
    display: flex;
    align-items: center;
    background: linear-gradient(
        180deg,
        rgba(255, 255, 255, 0.85) 0%,
        rgba(255, 255, 255, 0.75) 50%,
        rgba(0, 229, 255, 0.2) 100%
    );
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--card-radius);
    padding: var(--spacing-md) var(--spacing-lg);
    padding-right: 0;
    min-height: 120px;
    text-decoration: none;
    color: var(--color-text);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: 
        transform var(--transition-normal),
        box-shadow var(--transition-normal),
        z-index 0s;
    cursor: pointer;
    margin-bottom: -12px; /* Нахлёст карточек */
    z-index: 1;
}

.service-card:last-child {
    margin-bottom: 0;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
    z-index: 10;
}

.service-card__content {
    flex: 1;
    padding-right: var(--spacing-sm);
}

.service-card__title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--color-text);
}

.service-card__description {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.service-card__icon {
    width: 90px;
    height: 90px;
    flex-shrink: 0;
    display: flex;
    align-items: flex-end;
    justify-content: flex-end;
    align-self: flex-end;
    margin-bottom: -16px;
    margin-right: -8px;
}

.service-card__icon img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform var(--transition-normal);
}

.service-card:hover .service-card__icon img {
    transform: scale(1.05);
}

/* ============== ФУТЕР ============== */
.footer {
    text-align: center;
    padding: 12px 0 4px;
    margin-top: auto;
}

.footer a {
    color: #9ca3af;
    text-decoration: none;
    font-size: 0.7rem;
    font-weight: 400;
    transition: color var(--transition-fast);
}

.footer a:hover {
    color: #6b7280;
}

/* ============== МОДАЛЬНОЕ ОКНО ЧАТА ============== */
.chat-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    opacity: 0;
    visibility: hidden;
    transition: 
        opacity var(--transition-normal),
        visibility var(--transition-normal);
}

.chat-modal.active {
    opacity: 1;
    visibility: visible;
}

.chat-modal__overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.chat-modal__container {
    position: relative;
    width: 100%;
    max-width: var(--app-max-width);
    max-height: calc(100vh - 48px);
    background: var(--color-white);
    border-radius: var(--card-radius);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
    display: flex;
    flex-direction: column;
    transform: translateY(20px) scale(0.95);
    transition: transform var(--transition-normal);
    overflow: hidden;
}

.chat-modal.active .chat-modal__container {
    transform: translateY(0) scale(1);
}

/* Шапка чата */
.chat-modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-bg-start), var(--color-bg-end));
    color: var(--color-white);
    flex-shrink: 0;
}

.chat-modal__title {
    font-size: 1.1rem;
    font-weight: 600;
}

.chat-modal__close {
    width: 36px;
    height: 36px;
    border: none;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: var(--color-white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast);
}

.chat-modal__close:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Область сообщений */
.chat-modal__messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    background: #f8f9fb;
    min-height: 300px;
    max-height: 50vh;
}

/* Сообщения */
.chat-message {
    display: flex;
    gap: var(--spacing-sm);
    max-width: 90%;
    animation: messageIn 0.3s ease;
}

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

.chat-message--user {
    flex-direction: row-reverse;
    align-self: flex-end;
}

.chat-message--assistant {
    align-self: flex-start;
}

.chat-message__avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--color-bg-start), var(--color-bg-end));
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-message__avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.chat-message--user .chat-message__avatar {
    background: var(--color-accent);
}

.chat-message--user .chat-message__avatar::after {
    content: '👤';
    font-size: 1.2rem;
}

.chat-message--user .chat-message__avatar img {
    display: none;
}

.chat-message__content {
    background: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    font-size: 0.9rem;
    line-height: 1.5;
}

.chat-message--user .chat-message__content {
    background: linear-gradient(135deg, var(--color-bg-start), var(--color-bg-end));
    color: var(--color-white);
}

.chat-message__content p {
    margin: 0;
}

.chat-message__content p + p {
    margin-top: 0.5em;
}

.chat-message__content strong {
    font-weight: 600;
}

.chat-message__content ul,
.chat-message__content ol {
    margin: 0.5em 0;
    padding-left: 1.2em;
}

.chat-message__content li {
    margin: 0.25em 0;
}

/* Ссылки на сервисы */
.chat-message__content .service-link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 1px dashed var(--color-primary);
    transition: 
        color var(--transition-fast),
        border-color var(--transition-fast);
}

.chat-message__content .service-link:hover {
    color: var(--color-bg-end);
    border-color: var(--color-bg-end);
}

.chat-message--user .chat-message__content .service-link {
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.6);
}

.chat-message--user .chat-message__content .service-link:hover {
    border-color: var(--color-white);
}

/* Индикатор загрузки */
.chat-message--loading .chat-message__content {
    display: flex;
    gap: 4px;
    padding: var(--spacing-md);
}

.typing-dot {
    width: 8px;
    height: 8px;
    background: var(--color-primary-light);
    border-radius: 50%;
    animation: typingDot 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) { animation-delay: 0s; }
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingDot {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Область ввода */
.chat-modal__input-area {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-white);
    border-top: 1px solid #eee;
    flex-shrink: 0;
}

.chat-input {
    display: flex;
    align-items: flex-end;
    gap: var(--spacing-sm);
    background: #f5f5f8;
    border-radius: 24px;
    padding: var(--spacing-xs) var(--spacing-xs) var(--spacing-xs) var(--spacing-md);
}

.chat-input textarea {
    flex: 1;
    border: none;
    background: transparent;
    font-family: inherit;
    font-size: 0.95rem;
    line-height: 1.4;
    resize: none;
    max-height: 120px;
    padding: var(--spacing-xs) 0;
    outline: none;
}

.chat-input textarea::placeholder {
    color: var(--color-text-secondary);
}

.chat-input__send {
    width: 40px;
    height: 40px;
    border: none;
    background: linear-gradient(135deg, var(--color-bg-start), var(--color-bg-end));
    border-radius: 50%;
    color: var(--color-white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: 
        transform var(--transition-fast),
        opacity var(--transition-fast);
}

.chat-input__send:hover {
    transform: scale(1.05);
}

.chat-input__send:active {
    transform: scale(0.95);
}

.chat-input__send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.chat-modal__clear {
    display: block;
    width: 100%;
    margin-top: var(--spacing-sm);
    padding: var(--spacing-xs);
    border: none;
    background: transparent;
    color: var(--color-text-secondary);
    font-family: inherit;
    font-size: 0.8rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.chat-modal__clear:hover {
    color: var(--color-text);
}

/* ============== АДАПТИВНОСТЬ ============== */
@media (max-width: 480px) {
    body {
        padding: 0;
    }
    
    .app-container {
        min-height: 100vh;
        border-radius: 0;
        padding: var(--spacing-md);
        padding-bottom: 8px;
    }
    
    .header__title {
        font-size: 2rem;
    }
    
    .service-card {
        padding: var(--spacing-sm) var(--spacing-md);
        padding-right: 0;
        min-height: 100px;
    }
    
    .service-card__icon {
        width: 70px;
        height: 70px;
    }
    
    .chat-modal {
        padding: 0;
    }
    
    .chat-modal__container {
        max-height: 100vh;
        border-radius: 0;
    }
    
    .chat-modal__messages {
        max-height: 60vh;
    }
}

/* ============== СКРОЛЛБАР ============== */
.chat-modal__messages::-webkit-scrollbar {
    width: 6px;
}

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

.chat-modal__messages::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.15);
    border-radius: 3px;
}

.chat-modal__messages::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.25);
}