/**
 * @file: styles.css
 * @description: Стили для Telegram Mini App добавления заявок
 * @created: 2025-12-10
 */

/* ========== CSS ПЕРЕМЕННЫЕ ========== */
:root {
    /* Цвета */
    --tg-theme-bg-color: #ffffff;
    --tg-theme-text-color: #000000;
    --tg-theme-hint-color: #999999;
    --tg-theme-link-color: #2481cc;
    --tg-theme-button-color: #2481cc;
    --tg-theme-button-text-color: #ffffff;
    --tg-theme-secondary-bg-color: #f4f4f5;
    
    /* Дополнительные цвета */
    --primary-color: #2481cc;
    --success-color: #4caf50;
    --warning-color: #ff9800;
    --danger-color: #f44336;
    --info-color: #2196f3;
    
    /* Размеры */
    --border-radius: 12px;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Тени */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
    
    /* Анимации */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ========== ОБЩИЕ СТИЛИ ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    height: 100%;
    overflow-x: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    background-color: var(--tg-theme-bg-color);
    color: var(--tg-theme-text-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========== LOADER ========== */
.loader-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: var(--tg-theme-bg-color);
}

.loader {
    width: 50px;
    height: 50px;
    border: 4px solid var(--tg-theme-secondary-bg-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loader-container p {
    margin-top: var(--spacing-md);
    color: var(--tg-theme-hint-color);
    font-size: 14px;
}

/* ========== APP CONTAINER ========== */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding-bottom: var(--spacing-lg);
}

/* ========== HEADER ========== */
.app-header {
    background: linear-gradient(135deg, var(--primary-color), #1e6bb8);
    color: white;
    padding: var(--spacing-lg) var(--spacing-md);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.app-header h1 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.subtitle {
    font-size: 14px;
    opacity: 0.9;
    font-weight: 400;
}

/* ========== CONTENT ========== */
.app-content {
    flex: 1;
    padding: var(--spacing-md);
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
}

/* ========== INFO CARD ========== */
.info-card {
    background-color: var(--tg-theme-secondary-bg-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.info-header {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.info-icon {
    font-size: 24px;
    margin-right: var(--spacing-sm);
}

.info-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--tg-theme-text-color);
}

.info-content p {
    margin-bottom: var(--spacing-sm);
    font-size: 14px;
    color: var(--tg-theme-text-color);
}

.example-box {
    background-color: var(--tg-theme-bg-color);
    border-left: 4px solid var(--primary-color);
    padding: var(--spacing-sm) var(--spacing-md);
    margin: var(--spacing-md) 0;
    border-radius: 4px;
}

.example-text {
    font-family: 'Courier New', monospace;
    font-size: 13px;
    color: var(--tg-theme-text-color);
    font-style: italic;
}

.instruction-list {
    list-style: none;
    padding-left: 0;
    margin-top: var(--spacing-md);
}

.instruction-list li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    font-size: 14px;
    color: var(--tg-theme-text-color);
}

.instruction-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
}

/* ========== FORM ========== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: flex;
    align-items: center;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--tg-theme-text-color);
}

.label-icon {
    margin-right: var(--spacing-xs);
    font-size: 18px;
}

.form-textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--tg-theme-secondary-bg-color);
    border-radius: var(--border-radius);
    font-size: 15px;
    font-family: inherit;
    resize: vertical;
    transition: border-color var(--transition-fast);
    background-color: var(--tg-theme-bg-color);
    color: var(--tg-theme-text-color);
}

.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(36, 129, 204, 0.1);
}

.form-textarea::placeholder {
    color: var(--tg-theme-hint-color);
}

.char-counter {
    text-align: right;
    font-size: 12px;
    color: var(--tg-theme-hint-color);
    margin-top: var(--spacing-xs);
}

/* ========== ADVANCED SECTION ========== */
.advanced-section {
    margin-bottom: var(--spacing-lg);
}

.advanced-toggle {
    width: 100%;
    padding: var(--spacing-md);
    background-color: var(--tg-theme-secondary-bg-color);
    border: none;
    border-radius: var(--border-radius);
    font-size: 15px;
    font-weight: 500;
    color: var(--tg-theme-text-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background-color var(--transition-fast);
}

.advanced-toggle:hover {
    background-color: #e8e8e9;
}

.toggle-icon {
    font-size: 12px;
    transition: transform var(--transition-normal);
}

.advanced-section.expanded .toggle-icon {
    transform: rotate(180deg);
}

.advanced-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.advanced-section.expanded .advanced-content {
    max-height: 500px;
    margin-top: var(--spacing-md);
}

/* ========== BUTTONS ========== */
.action-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.btn {
    flex: 1;
    padding: var(--spacing-md);
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.btn:active {
    transform: scale(0.98);
}

.btn-icon {
    margin-right: var(--spacing-xs);
}

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

.btn-primary:hover {
    background-color: #1e6bb8;
}

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

.btn-secondary:hover {
    background-color: #e8e8e9;
}

.btn-success {
    background-color: var(--success-color);
    color: white;
}

.btn-success:hover {
    background-color: #45a049;
}

.btn-warning {
    background-color: var(--warning-color);
    color: white;
}

.btn-warning:hover {
    background-color: #f57c00;
}

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

/* ========== PREVIEW SECTION ========== */
.preview-section {
    background-color: var(--tg-theme-secondary-bg-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-top: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    animation: slideIn var(--transition-normal);
}

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

.preview-header h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--tg-theme-text-color);
}

.preview-content {
    background-color: var(--tg-theme-bg-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: 14px;
    line-height: 1.8;
}

.preview-content strong {
    color: var(--primary-color);
}

.preview-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

/* ========== MODAL ========== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    animation: fadeIn var(--transition-fast);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background-color: var(--tg-theme-bg-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    max-width: 400px;
    width: 90%;
    text-align: center;
    box-shadow: var(--shadow-lg);
    animation: slideUp var(--transition-normal);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
}

.modal-content h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--tg-theme-text-color);
}

.modal-content p {
    font-size: 14px;
    color: var(--tg-theme-text-color);
    margin-bottom: var(--spacing-lg);
}

.modal-content.error .modal-icon {
    color: var(--danger-color);
}

.modal-content.success .modal-icon {
    color: var(--success-color);
}

/* ========== FOOTER ========== */
.app-footer {
    text-align: center;
    padding: var(--spacing-md);
    font-size: 12px;
    color: var(--tg-theme-hint-color);
}

.app-footer strong {
    color: var(--primary-color);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 480px) {
    .app-header h1 {
        font-size: 20px;
    }
    
    .subtitle {
        font-size: 12px;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .preview-actions {
        flex-direction: column;
    }
}

/* ========== TELEGRAM THEME INTEGRATION ========== */
@media (prefers-color-scheme: dark) {
    :root {
        --tg-theme-bg-color: #1a1a1a;
        --tg-theme-text-color: #ffffff;
        --tg-theme-hint-color: #aaaaaa;
        --tg-theme-secondary-bg-color: #2b2b2b;
    }
    
    .example-box {
        background-color: #2b2b2b;
    }
    
    .advanced-toggle:hover {
        background-color: #3a3a3a;
    }
    
    .btn-secondary:hover {
        background-color: #3a3a3a;
    }
}

/* ========== UTILITY CLASSES ========== */
.hidden {
    display: none !important;
}

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

.text-muted {
    color: var(--tg-theme-hint-color);
}

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }