:root {
    --primary-color: #facc15;
    --bg-color: #0f172a;
    --panel-bg-left: #1e293b;
    --panel-bg-right: #020617;
    --text-color: #f1f5f9;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --input-bg: #0f172a;
    --success-color: #22c55e;
    --danger-color: #ef4444;
}

body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    height: 100vh;
    overflow: hidden;
}

/* 兼容站点统一顶部导航 */
.app-split-view{
    height: calc(100vh - 120px);
}

.app-split-view {
    display: grid;
    grid-template-columns: 400px 1fr;
    height: 100vh;
    width: 100vw;
}

.left-config-zone {
    background-color: var(--panel-bg-left);
    border-right: 1px solid var(--border-color);
    padding: 30px 25px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    overflow-y: auto;
    height: 100vh;
    box-sizing: border-box;
    z-index: 10;
}

.left-config-zone::-webkit-scrollbar { width: 6px; }
.left-config-zone::-webkit-scrollbar-thumb { background-color: var(--border-color); border-radius: 3px; }

.right-preview-zone {
    background-color: var(--panel-bg-right);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    height: 100vh;
    box-sizing: border-box;
    overflow: hidden;
}

header {
    display: flex;
    align-items: center;
    margin-bottom: 5px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

h1 { font-size: 1.5rem; color: var(--primary-color); margin: 0; }

.oss-tag {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success-color);
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid rgba(34, 197, 94, 0.3);
    margin-left: 10px;
}

label { display: block; margin-bottom: 8px; font-size: 0.9rem; font-weight: 600; color: var(--text-muted); }

textarea, select, input[type="text"] {
    width: 100%;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    padding: 10px;
    font-size: 0.95rem;
    box-sizing: border-box;
    transition: border-color 0.2s;
}

textarea:focus, select:focus { border-color: var(--primary-color); outline: none; }
#prompt { min-height: 100px; resize: vertical; }
.params-row { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }

.upload-section {
    border: 1px solid var(--border-color);
    padding: 15px;
    border-radius: 8px;
    background: rgba(0,0,0,0.2);
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.upload-btn-wrapper {
    position: relative;
    width: 100%;
    height: 50px;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-muted);
    transition: 0.2s;
    background: rgba(255,255,255,0.02);
    gap: 10px;
}

.upload-btn-wrapper:hover { border-color: var(--primary-color); color: var(--primary-color); }
.upload-btn-wrapper input { position: absolute; width: 100%; height: 100%; opacity: 0; cursor: pointer; }

.preview-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    min-height: 60px;
    padding: 5px;
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 6px;
    background: rgba(0,0,0,0.1);
}

.preview-item {
    position: relative;
    width: 60px;
    height: 60px;
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    background: #000;
}

.preview-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.6;
    transition: opacity 0.3s;
}

.preview-item.upload-success .preview-thumb { opacity: 1; }
.preview-item.upload-error { border-color: var(--danger-color); }

.btn-delete-img {
    position: absolute;
    top: 2px;
    right: 2px;
    background: rgba(239, 68, 68, 0.8);
    color: white;
    border: none;
    border-radius: 50%;
    width: 18px;
    height: 18px;
    font-size: 12px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s;
}

.preview-item:hover .btn-delete-img { opacity: 1; }

.loading-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    display: flex; justify-content: center; align-items: center;
    background: rgba(0,0,0,0.5); color: white; font-size: 10px;
}

.upload-success .loading-overlay { display: none; }

.btn-generate {
    width: 100%; padding: 14px;
    background: linear-gradient(135deg, #facc15 0%, #eab308 100%);
    color: #000; border: none; border-radius: 8px; font-size: 1rem; font-weight: 800;
    cursor: pointer; box-shadow: 0 4px 15px rgba(234, 179, 8, 0.3); transition: all 0.2s; margin-top: 10px;
}

.btn-generate:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(234, 179, 8, 0.4); }
.btn-generate:disabled { background: #475569; color: #94a3b8; cursor: not-allowed; transform: none; box-shadow: none; }

.history-container { margin-top: 20px; border-top: 1px solid var(--border-color); padding-top: 20px; }
.history-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; }
.history-header h3 { margin: 0; font-size: 1rem; color: var(--text-color); }
.btn-clear { background: transparent; border: 1px solid var(--border-color); color: var(--text-muted); font-size: 0.75rem; padding: 4px 8px; border-radius: 4px; cursor: pointer; }
.btn-clear:hover { color: var(--danger-color); border-color: var(--danger-color); }
.history-list { display: flex; flex-direction: column; gap: 12px; }
.history-item { display: flex; gap: 10px; background: rgba(0,0,0,0.2); padding: 8px; border-radius: 6px; cursor: pointer; transition: background 0.2s; border: 1px solid transparent; }
.history-item:hover { background: rgba(255,255,255,0.05); border-color: var(--border-color); }
.history-thumb { width: 60px; height: 60px; border-radius: 4px; object-fit: cover; flex-shrink: 0; background: #000; }
.history-info { flex: 1; overflow: hidden; display: flex; flex-direction: column; justify-content: space-between; }
.history-prompt { font-size: 0.8rem; color: var(--text-color); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.history-time { font-size: 0.7rem; color: var(--text-muted); }

.btn-download { margin-top: 20px; padding: 12px 24px; background: transparent; border: 1px solid var(--primary-color); color: var(--primary-color); border-radius: 6px; cursor: pointer; display: none; font-weight: 600; font-size: 1rem; transition: background 0.2s; flex-shrink: 0; }
.btn-download:hover { background: rgba(250, 204, 21, 0.1); }
#result-image { max-width: 90%; max-height: 75vh; border-radius: 8px; box-shadow: 0 10px 40px rgba(0,0,0,0.5); display: none; object-fit: contain; }

.loader { border: 4px solid rgba(255, 255, 255, 0.1); border-left-color: var(--primary-color); border-radius: 50%; width: 40px; height: 40px; animation: spin 1s linear infinite; margin: 0 auto 15px; }
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
#loadingState { display: none; text-align: center; }
#errorMsg { color: #ef4444; margin-top: 15px; text-align: center; display: none; font-size: 0.9rem; }