@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

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

:root {
    --primary-color: #1a1a1a;
    --primary-light: #333333;
    --secondary-color: #f8f8f8;
    --text-primary: #1a1a1a;
    --text-secondary: #6b6b6b;
    --text-muted: #999999;
    --success-color: #4CAF50;
    --warning-color: #ff9800;
    --error-color: #f44336;
    --border-color: #e0e0e0;
    --shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.12);
    --border-radius: 4px;
    --border-radius-lg: 6px;
    --transition: all 0.2s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: #F8F8F8;
    background-image: url('design/background.svg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    max-width: 480px;
    width: 100%;
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
    max-height: 90vh;
}

/* Header */
.header {
    padding: 20px;
    background: white;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

.progress-info {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 14px;
    color: var(--text-secondary);
}

.progress-text {
    font-weight: 500;
}

.progress-bar {
    width: 120px;
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    border-radius: 2px;
    transition: width 0.5s ease;
    position: absolute;
    left: 0;
    top: 0;
}

/* Chat Container */
.chat-container {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

.message {
    margin-bottom: 24px;
    animation: fadeInUp 0.3s ease;
}

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

.message-wrapper {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.message.user .message-wrapper {
    flex-direction: row-reverse;
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--secondary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    flex-shrink: 0;
}

.message.bot .message-avatar {
    background: var(--primary-color);
    color: white;
}

.message.user .message-avatar {
    background: var(--secondary-color);
    color: var(--primary-color);
}

.message-content {
    max-width: 85%;
    background: var(--secondary-color);
    padding: 12px 16px;
    border-radius: 6px;
    border-bottom-left-radius: 2px;
    font-size: 15px;
    line-height: 1.5;
}

.message.user .message-content {
    background: var(--primary-color);
    color: white;
    border-bottom-left-radius: 6px;
    border-bottom-right-radius: 2px;
}

.message-time {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.message:hover .message-time {
    opacity: 1;
}

/* Options */
.options-container {
    margin-top: 12px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.option-btn {
    padding: 10px 16px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.option-btn:hover {
    background: var(--secondary-color);
    border-color: var(--primary-color);
}

/* Выбранные опции в multi-select */
.option-btn.selected {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.option-btn.selected:hover {
    background: var(--primary-light);
    border-color: var(--primary-light);
}

/* Кнопка "Готово" для multi-select */
.multi-select-done-btn {
    width: 100%;
    font-weight: 600;
}

.option-btn:active {
    transform: scale(0.95);
}

/* Range Input for scales */
.scale-container {
    margin-top: 16px;
    padding: 16px;
    background: var(--secondary-color);
    border-radius: var(--border-radius);
}

.scale-labels {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
    font-size: 12px;
    color: var(--text-secondary);
}

.scale-input {
    width: 100%;
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    border-radius: 3px;
    background: #ddd;
    outline: none;
}

.scale-input::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.scale-value {
    text-align: center;
    margin-top: 8px;
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-color);
}

/* Input Container */
.input-container {
    padding: 20px;
    background: white;
    border-top: 1px solid var(--border-color);
    position: sticky;
    bottom: 0;
}

.input-wrapper {
    display: flex;
    gap: 12px;
    align-items: flex-end;
}

.back-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: white;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

.back-btn:hover:not(:disabled) {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    transform: scale(1.05);
}

.back-btn:active:not(:disabled) {
    transform: scale(0.95);
}

.back-btn:disabled {
    opacity: 0.2;
    cursor: not-allowed;
    border-color: var(--border-color);
    color: var(--text-muted);
}

.back-btn svg {
    width: 20px;
    height: 20px;
}

.input-field {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 15px;
    font-family: inherit;
    outline: none;
    transition: var(--transition);
    resize: none;
    min-height: 44px;
    max-height: 120px;
}

.input-field:focus {
    border-color: var(--primary-color);
}

.input-field::placeholder {
    color: var(--text-muted);
}

.send-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

.send-btn:hover:not(:disabled) {
    transform: scale(1.05);
    box-shadow: var(--shadow);
}

.send-btn:active:not(:disabled) {
    transform: scale(0.95);
}

.send-btn:disabled {
    background: var(--border-color);
    cursor: not-allowed;
}

.send-icon {
    width: 20px;
    height: 20px;
}

/* Edit button for completed questions */
.edit-btn {
    margin-top: 8px;
    padding: 6px 12px;
    background: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    border-radius: 4px;
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    opacity: 0;
    transform: translateY(-4px);
}

/* Показываем кнопку при наведении на сообщение */
.message.bot:hover .edit-btn {
    opacity: 1;
    transform: translateY(0);
}

.edit-btn:hover {
    background: var(--primary-color);
    color: white;
}

.edit-btn svg {
    width: 14px;
    height: 14px;
}

/* Скрыть кнопку редактирования если функция отключена */
.edit-btn.hidden-feature {
    display: none !important;
}

/* Editing state */
.message.editing {
    background: #fffbea;
    border-left: 3px solid #f59e0b;
}

.message.editing .message-content {
    opacity: 0.7;
}

/* Typing Indicator */
.typing-indicator {
    display: none;
    padding: 8px 12px;
    background: var(--secondary-color);
    border-radius: 6px;
    border-bottom-left-radius: 2px;
    margin-left: 44px;
    margin-bottom: 16px;
    width: fit-content;
}

.typing-dots {
    display: flex;
    gap: 4px;
    align-items: center;
}

.typing-dot {
    width: 6px;
    height: 6px;
    background: var(--text-secondary);
    border-radius: 50%;
    animation: typing 1.4s infinite;
}

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

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

@keyframes typing {
    0%, 60%, 100% {
        opacity: 0.3;
        transform: scale(0.8);
    }
    30% {
        opacity: 1;
        transform: scale(1);
    }
}

/* Tooltips */
.tooltip {
    position: relative;
    display: inline-block;
    cursor: help;
}

.tooltip-icon {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--border-color);
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 600;
    margin-left: 4px;
}

.tooltip-content {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 13px;
    white-space: normal;
    max-width: 400px;
    width: max-content;
    z-index: 10;
    margin-bottom: 8px;
    transition: opacity 0.2s ease;
    line-height: 1.5;
    text-align: left;
}

.tooltip:hover .tooltip-content {
    visibility: visible;
    opacity: 1;
}

.tooltip-content::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 4px solid transparent;
    border-top-color: var(--primary-color);
}

/* Error states */
.error-message {
    background: #ffebee;
    color: var(--error-color);
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 13px;
    margin-top: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.error-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* Loading state */
.loading {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s linear infinite;
}

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

/* Results */
.results-container {
    display: none;
    padding: 20px;
    background: var(--secondary-color);
    max-height: 90vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.results-header {
    text-align: center;
    margin-bottom: 32px;
}

.results-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.results-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
}

.age-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.age-card {
    background: white;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    border: 1px solid var(--border-color);
}

.age-value {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 4px;
}

.age-label {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Responsive */
@media (max-width: 640px) {
    .container {
        max-width: 100%;
    }
    
    .message-content {
        max-width: 90%;
    }
    
    .age-cards {
        grid-template-columns: 1fr;
    }
}

/* Edit functionality */
.message.completed {
    opacity: 0.8;
}


/* Hide elements */
.hidden {
    display: none !important;
}

/* Multi-field input */
.multi-input-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 12px;
}

.multi-input-field {
    display: flex;
    align-items: center;
    gap: 8px;
}

.multi-input-field label {
    font-size: 14px;
    color: var(--text-secondary);
    min-width: 80px;
}

.multi-input-field input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    outline: none;
}

.multi-input-field input:focus {
    border-color: var(--primary-color);
}

/* File Upload */
.file-upload-container {
    margin-top: 16px;
    padding: 24px;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    background: var(--secondary-color);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.file-upload-container:hover {
    border-color: var(--primary-color);
    background: #f0f0f0;
}

.file-upload-container.dragging {
    border-color: var(--primary-color);
    background: #e8f4f8;
    border-style: solid;
}

.file-upload-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 12px;
    color: var(--text-secondary);
}

.file-upload-text {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.file-upload-hint {
    font-size: 13px;
    color: var(--text-secondary);
}

.file-upload-input {
    display: none;
}

.uploaded-files {
    margin-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.uploaded-file {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    transition: var(--transition);
    overflow: hidden;
}

.uploaded-file:hover {
    border-color: var(--primary-color);
}

.file-icon {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    color: var(--primary-color);
}

.file-info {
    flex: 1;
    min-width: 0;
    max-width: 100%;
    overflow: hidden;
}

.file-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: block;
}

.file-size {
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
}

@media (max-width: 640px) {
    .file-name {
        max-width: 180px;
    }
}

.file-remove-btn {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--error-color);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: var(--transition);
}

.file-remove-btn:hover {
    background: #d32f2f;
    transform: scale(1.1);
}

.file-remove-btn svg {
    width: 14px;
    height: 14px;
}

.file-submit-btn {
    margin-top: 12px;
    width: 100%;
}

.file-processing {
    margin-top: 16px;
    padding: 16px;
    background: #e3f2fd;
    border-radius: 6px;
    text-align: center;
}

.file-processing-text {
    font-size: 14px;
    color: var(--primary-color);
    margin-bottom: 8px;
    font-weight: 500;
}

.file-processing-hint {
    font-size: 12px;
    color: var(--text-secondary);
}

/* Parameter review inputs */
.param-review-input {
    transition: var(--transition);
}

.param-review-input:focus {
    border-color: var(--primary-color) !important;
    outline: none;
    box-shadow: 0 0 0 2px rgba(26, 26, 26, 0.1);
}

.param-review-input:hover {
    border-color: var(--primary-light) !important;
}