/* 
 * Photo Exchanger - Стили
 * Минималистический дизайн в полутёмных тонах
 */

/* === Сброс и базовые стили === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --text-primary: #eaeaea;
    --text-secondary: #a0a0a0;
    --accent: #e94560;
    --accent-hover: #ff6b6b;
    --success: #4ecca3;
    --warning: #ffc107;
    --border: #2a2a4a;
    --shadow: rgba(0, 0, 0, 0.3);
}

html {
    font-size: 16px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

/* === Контейнер === */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* === Шапка === */
header {
    text-align: center;
    margin-bottom: 40px;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
    letter-spacing: 1px;
}

.subtitle {
    font-size: 1.2rem;
    color: var(--accent);
    margin-bottom: 15px;
}

.description {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    font-size: 1rem;
}

/* === Основной контент === */
main {
    flex: 1;
}

/* === Блок предупреждения === */
.warning-box {
    background: var(--bg-secondary);
    border: 1px solid var(--warning);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 30px;
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.warning-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.warning-content h3 {
    color: var(--warning);
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.warning-content ul {
    list-style: none;
    margin: 15px 0;
}

.warning-content li {
    color: var(--text-secondary);
    padding: 5px 0;
    padding-left: 20px;
    position: relative;
}

.warning-content li::before {
    content: '•';
    color: var(--accent);
    position: absolute;
    left: 0;
}

/* === Чекбокс === */
.checkbox-container {
    display: flex;
    align-items: center;
    cursor: pointer;
    color: var(--text-primary);
    margin-top: 15px;
    font-size: 0.95rem;
}

.checkbox-container input {
    display: none;
}

.checkmark {
    width: 22px;
    height: 22px;
    border: 2px solid var(--border);
    border-radius: 4px;
    margin-right: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    background: var(--bg-primary);
}

.checkbox-container:hover .checkmark {
    border-color: var(--accent);
}

.checkbox-container input:checked + .checkmark {
    background: var(--accent);
    border-color: var(--accent);
}

.checkbox-container input:checked + .checkmark::after {
    content: '✓';
    color: white;
    font-size: 14px;
}

/* === Секция загрузки === */
.upload-section {
    opacity: 0.5;
    pointer-events: none;
    transition: all 0.3s ease;
}

.upload-section.active {
    opacity: 1;
    pointer-events: auto;
}

.upload-zone {
    background: var(--bg-secondary);
    border: 2px dashed var(--border);
    border-radius: 16px;
    padding: 50px 30px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--accent);
    background: rgba(233, 69, 96, 0.05);
}

.upload-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.upload-zone h2 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.upload-zone p {
    color: var(--text-secondary);
    margin: 10px 0;
}

.upload-btn {
    display: inline-block;
    background: var(--accent);
    color: white;
    padding: 12px 30px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    margin: 15px 0;
}

.upload-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

.upload-btn input {
    display: none;
}

.upload-info {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 20px;
}

/* === Превью файлов === */
.preview-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 15px;
    margin-top: 25px;
}

.preview-item {
    background: var(--bg-secondary);
    border-radius: 10px;
    padding: 10px;
    position: relative;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

.preview-item img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    border-radius: 6px;
}

.preview-item .file-icon {
    width: 100%;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: 6px;
    font-size: 3rem;
}

.preview-name {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.preview-remove {
    position: absolute;
    top: 5px;
    right: 5px;
    width: 24px;
    height: 24px;
    background: var(--accent);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.preview-remove:hover {
    background: var(--accent-hover);
    transform: scale(1.1);
}

/* === Кнопка загрузки === */
.submit-btn {
    display: block;
    width: 100%;
    max-width: 300px;
    margin: 30px auto 0;
    padding: 15px 30px;
    background: var(--success);
    color: var(--bg-primary);
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    background: #5de0b8;
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(78, 204, 163, 0.3);
}

.submit-btn:disabled {
    background: var(--border);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* === Прогресс загрузки === */
.progress-container {
    margin-top: 30px;
    text-align: center;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent), var(--success));
    border-radius: 4px;
    transition: width 0.3s ease;
}

.progress-text {
    color: var(--text-secondary);
    margin-top: 10px;
    font-size: 0.9rem;
}

/* === Результаты === */
.results-section {
    animation: fadeIn 0.5s ease;
}

.results-section h2 {
    text-align: center;
    color: var(--success);
    margin-bottom: 20px;
    font-size: 1.8rem;
}

.expiry-warning {
    background: rgba(255, 193, 7, 0.1);
    border: 1px solid var(--warning);
    border-radius: 10px;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
}

.expiry-icon {
    font-size: 1.5rem;
}

.expiry-warning p {
    color: var(--text-secondary);
    margin: 0;
}

.expiry-warning strong {
    color: var(--warning);
}

.results-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.result-item {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    gap: 20px;
    align-items: center;
    animation: slideIn 0.3s ease;
}

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

.result-thumb {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 8px;
    flex-shrink: 0;
}

.result-thumb-placeholder {
    width: 80px;
    height: 80px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    flex-shrink: 0;
}

.result-info {
    flex: 1;
    min-width: 0;
}

.result-name {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.result-url {
    display: flex;
    gap: 10px;
    align-items: center;
}

.result-url input {
    flex: 1;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 10px 12px;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.result-url input:focus {
    outline: none;
    border-color: var(--accent);
}

.copy-btn {
    background: var(--accent);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.copy-btn:hover {
    background: var(--accent-hover);
}

.copy-btn.copied {
    background: var(--success);
}

.delete-btn {
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 10px 15px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.delete-btn:hover {
    background: var(--accent);
    color: white;
}

.result-item.deleted {
    opacity: 0.5;
    background: rgba(233, 69, 96, 0.1);
}

.result-item.deleted .result-url input {
    text-decoration: line-through;
}

.new-upload-btn {
    display: block;
    margin: 30px auto 0;
    padding: 12px 30px;
    background: transparent;
    color: var(--accent);
    border: 2px solid var(--accent);
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.new-upload-btn:hover {
    background: var(--accent);
    color: white;
}

/* === Футер === */
footer {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

.footer-link:hover {
    color: var(--accent);
}

.copyright {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 15px;
    opacity: 0.7;
}

/* === Адаптивность для мобильных устройств === */
@media (max-width: 768px) {
    .container {
        padding: 20px 15px;
    }

    header h1 {
        font-size: 1.8rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .description {
        font-size: 0.9rem;
    }

    .warning-box {
        flex-direction: column;
        gap: 15px;
        padding: 20px;
    }

    .warning-icon {
        font-size: 1.5rem;
    }

    .upload-zone {
        padding: 30px 20px;
    }

    .upload-icon {
        font-size: 3rem;
    }

    .upload-zone h2 {
        font-size: 1.2rem;
    }

    .preview-container {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 10px;
    }

    .preview-item img,
    .preview-item .file-icon {
        height: 100px;
    }

    .result-item {
        flex-direction: column;
        text-align: center;
        padding: 15px;
    }

    .result-thumb,
    .result-thumb-placeholder {
        width: 100px;
        height: 100px;
    }

    .result-url {
        flex-direction: column;
    }

    .result-url input {
        width: 100%;
    }

    .result-actions {
        display: flex;
        gap: 10px;
        width: 100%;
        margin-top: 10px;
    }

    .copy-btn,
    .delete-btn {
        flex: 1;
    }

    .expiry-warning {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.5rem;
    }

    .upload-btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .submit-btn {
        padding: 12px 25px;
        font-size: 1rem;
    }

    .preview-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* === Уведомления (toast) === */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--bg-secondary);
    border-left: 4px solid var(--success);
    padding: 15px 20px;
    border-radius: 8px;
    box-shadow: 0 5px 20px var(--shadow);
    animation: toastIn 0.3s ease;
    z-index: 1000;
}

.toast.error {
    border-left-color: var(--accent);
}

@keyframes toastIn {
    from { 
        opacity: 0; 
        transform: translateX(100px);
    }
    to { 
        opacity: 1; 
        transform: translateX(0);
    }
}

@keyframes toastOut {
    from { 
        opacity: 1; 
        transform: translateX(0);
    }
    to { 
        opacity: 0; 
        transform: translateX(100px);
    }
}