/* 图片格式转换工具样式 */

:root {
    --primary-color: #06b6d4;
    --primary-hover: #22d3ee;
    --primary-light: rgba(6, 182, 212, 0.08);
    --primary-light-hover: rgba(6, 182, 212, 0.12);
    --border-color-hover: rgba(6, 182, 212, 0.2);
    --shadow-primary: 0 0 16px rgba(6, 182, 212, 0.15);
}

html, body {
    height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    margin: 0;
}

body {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 70px;
    padding-bottom: 70px;
    min-height: 100vh;
}

.logo-icon {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0e7490 100%);
}

.main-content {
    width: 100%;
    max-width: 800px;
    padding: 20px;
    z-index: 10;
}

.tool-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.settings-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    background: rgba(0,0,0,0.15);
    align-items: flex-end;
}

.setting-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

.select {
    padding: 6px 12px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 13px;
    outline: none;
    cursor: pointer;
}
.select:focus { border-color: var(--primary-color); }

.range-input {
    width: 100px;
    accent-color: var(--primary-color);
}
.quality-label { color: var(--primary-color); font-weight: 600; min-width: 40px; }

.btn-action {
    padding: 8px 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: rgba(255,255,255,0.05);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: 0.2s;
}
.btn-action:hover { background: rgba(255,255,255,0.1); color: var(--text-primary); }
.btn-action:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-upload { background: rgba(6, 182, 212, 0.15); border-color: rgba(6, 182, 212, 0.3); color: #22d3ee; }
.btn-upload:hover { background: rgba(6, 182, 212, 0.25); }
.btn-convert { background: rgba(6, 182, 212, 0.2); border-color: rgba(6, 182, 212, 0.3); color: #22d3ee; }
.btn-convert:hover:not(:disabled) { background: rgba(6, 182, 212, 0.3); }
.btn-download { background: rgba(34, 197, 94, 0.15); border-color: rgba(34, 197, 94, 0.3); color: #4ade80; }
.btn-download:hover:not(:disabled) { background: rgba(34, 197, 94, 0.25); }
.btn-clear { background: rgba(156, 163, 175, 0.1); border-color: rgba(156, 163, 175, 0.2); color: #9ca3af; }
.btn-clear:hover { background: rgba(156, 163, 175, 0.2); }

.drop-zone {
    padding: 40px 20px;
    text-align: center;
    border: 2px dashed var(--border-color);
    margin: 16px;
    border-radius: var(--radius-lg);
    transition: 0.2s;
    cursor: pointer;
}
.drop-zone:hover, .drop-zone.dragover {
    border-color: var(--primary-color);
    background: var(--primary-light);
}
.drop-zone i { font-size: 40px; color: var(--primary-color); margin-bottom: 12px; }
.drop-zone p { color: var(--text-secondary); font-size: 14px; }
.drop-zone .hint { color: var(--text-muted); font-size: 12px; margin-top: 4px; }

/* 预览 */
.preview-section { padding: 16px; }
.preview-section.hidden { display: none; }

.preview-grid {
    display: flex;
    align-items: center;
    gap: 16px;
}

.preview-col {
    flex: 1;
    min-width: 0;
}

.preview-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
    font-weight: 600;
}

.preview-box {
    background: rgba(0,0,0,0.15);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 150px;
    max-height: 300px;
    overflow: hidden;
}
.preview-box img {
    max-width: 100%;
    max-height: 280px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.preview-arrow {
    color: var(--primary-color);
    font-size: 24px;
    flex-shrink: 0;
}

.file-info {
    margin-top: 8px;
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
}
.file-info .size-new { color: var(--primary-color); font-weight: 600; }

.action-bar {
    display: flex;
    gap: 10px;
    padding: 16px;
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .settings-bar { flex-direction: column; }
    .preview-grid { flex-direction: column; }
    .preview-arrow { transform: rotate(90deg); }
}

@media (max-width: 480px) {
    .main-content { padding: 10px; }
}