/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #ffffff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #007bff;
}

/* Hero Section */
.hero {
    padding: 4rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #333;
}

.hero p {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 2rem;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature {
    text-align: center;
    padding: 1.5rem;
    border-radius: 10px;
    background: #f8f9fa;
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

/* Upload Section */
.upload-section {
    background: #f8f9fa;
    padding: 4rem 0;
}

.upload-area {
    border: 3px dashed #007bff;
    border-radius: 15px;
    padding: 3rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    background: #fff;
}

.upload-area.dragover {
    background: #e3f2fd;
    border-color: #0056b3;
}

.upload-icon {
    font-size: 3rem;
    color: #007bff;
    margin-bottom: 1rem;
}

.upload-text {
    font-size: 1.2rem;
    color: #333;
    margin-bottom: 1rem;
}

.upload-subtext {
    color: #666;
    font-size: 0.9rem;
}

.file-input {
    display: none;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: #007bff;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.3s ease;
    margin: 0.5rem;
}

.btn:hover {
    background: #0056b3;
}

.btn:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.btn-danger {
    background: #dc3545;
}

.btn-danger:hover {
    background: #b02a37;
}

/* Preview Section */
.preview-section {
    padding: 2rem 0;
    display: none;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.preview-item {
    position: relative;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.2s ease;
}

.preview-item:hover {
    transform: scale(1.05);
}

.preview-img {
    width: 100%;
    height: 120px;
    object-fit: cover;
}

.preview-info {
    padding: 0.5rem;
    background: white;
    font-size: 0.8rem;
    color: #666;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.remove-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    background: rgba(220, 53, 69, 0.9);
    color: white;
    border: none;
    border-radius: 50%;
    width: 25px;
    height: 25px;
    cursor: pointer;
    font-size: 0.8rem;
    line-height: 1;
}

/* Settings */
.settings-section {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.setting-group {
    display: flex;
    flex-direction: column;
}

.setting-group label {
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.setting-group select {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.setting-separate {
    margin-top: 1.25rem;
    padding-top: 1.25rem;
    border-top: 1px solid #eee;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-weight: normal;
}

.checkbox-label input[type="checkbox"] {
    width: 1.1rem;
    height: 1.1rem;
    flex-shrink: 0;
    cursor: pointer;
    accent-color: #007bff;
}

.checkbox-label small {
    color: #999;
}

/* Progress */
.progress-section {
    display: none;
    text-align: center;
    padding: 2rem 0;
}

.progress-bar {
    width: 100%;
    height: 10px;
    background: #e9ecef;
    border-radius: 5px;
    overflow: hidden;
    margin: 1rem 0;
}

.progress-fill {
    height: 100%;
    background: #007bff;
    width: 0%;
    transition: width 0.3s ease;
}

.progress-text {
    color: #666;
    margin-top: 0.5rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.9);
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 90%;
    max-height: 90%;
}

.modal-img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: white;
    font-size: 2rem;
    cursor: pointer;
}

.modal-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.5);
    color: white;
    border: none;
    padding: 1rem;
    font-size: 1.5rem;
    cursor: pointer;
}

.modal-prev { left: 20px; }
.modal-next { right: 20px; }

/* Info sections */
.info-section {
    padding: 4rem 0;
    background: #f8f9fa;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.info-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.info-card h3 {
    color: #007bff;
    margin-bottom: 1rem;
}

/* FAQ — нативный аккордеон через <details>/<summary> */
.faq-section {
    padding: 4rem 0;
}

.faq-item {
    border-bottom: 1px solid #eee;
}

.faq-item:first-of-type {
    border-top: 1px solid #eee;
}

.faq-question {
    font-weight: 600;
    color: #333;
    padding: 1.25rem 2rem 1.25rem 0;
    cursor: pointer;
    list-style: none;
    position: relative;
    user-select: none;
}

/* Стрелка-индикатор */
.faq-question::after {
    content: '›';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%) rotate(90deg);
    font-size: 1.4rem;
    color: #007bff;
    transition: transform 0.2s ease;
}

.faq-item[open] .faq-question::after {
    transform: translateY(-50%) rotate(270deg);
}

/* Убираем стандартный маркер в разных браузерах */
.faq-question::-webkit-details-marker { display: none; }

.faq-answer {
    color: #666;
    padding: 0 0 1.25rem 0;
}

/* Footer */
footer {
    background: #333;
    color: white;
    padding: 2rem 0;
    text-align: center;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .upload-area {
        padding: 2rem 1rem;
    }

    .preview-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }

    .settings-grid {
        grid-template-columns: 1fr;
    }

    .modal-nav {
        padding: 0.5rem;
        font-size: 1.2rem;
    }

    .modal-prev { left: 10px; }
    .modal-next { right: 10px; }

    .features {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }

    .info-grid {
        grid-template-columns: 1fr;
    }
}