/* public/assets/css/tools/pdf/images-merge-pdf.css */
.i2p-wrapper {
    --bg: transparent;
    --card: var(--bg-surface);
    --border: var(--border-color);
    --text: var(--text-main);
    --muted: var(--text-muted);
    --primary: var(--primary-color);
    --primary-hover: var(--primary-hover);
    --danger: #ef4444;
    --radius: 14px;
    width: 100%;
}

.i2p-header { text-align: center; margin-bottom: 26px; }
.i2p-header h1 { font-size: 1.5rem; margin: 0 0 8px; font-weight: 700; color: var(--text); }
.i2p-header p { margin: 0; color: var(--muted); font-size: 0.95rem; }

.i2p-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 24px;
    align-items: start;
}

@media (max-width: 880px) {
    .i2p-layout { grid-template-columns: 1fr; }
    .i2p-sidebar { position: static !important; }
}

.i2p-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); }
.i2p-panel { padding: 20px; }

/* 上传区 */
.i2p-dropzone {
    border: 2px dashed var(--border); border-radius: var(--radius);
    background: var(--card); padding: 40px 20px; text-align: center;
    cursor: pointer; transition: 0.2s; margin-bottom: 20px; user-select: none;
}
.i2p-dropzone:hover { border-color: var(--primary); }
.i2p-dropzone.over { border-color: var(--primary); background: rgba(var(--primary-rgb), 0.05); transform: scale(1.01); }
.i2p-dropzone svg { width: 48px; height: 48px; color: var(--muted); margin-bottom: 12px; transition: 0.2s;}
.i2p-dropzone.over svg { color: var(--primary); }
.i2p-dropzone .main-txt { font-size: 1.05rem; margin: 0 0 8px; color: var(--text); }
.i2p-dropzone .main-txt strong { color: var(--primary); }
.i2p-dropzone .hint { margin: 0; font-size: 0.85rem; color: var(--muted); }

/* 列表区 */
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; font-size: 0.9rem; color: var(--muted); }
.link-btn { border: 0; background: none; color: var(--danger); font-size: 0.9rem; font-weight: 500; cursor: pointer; padding: 4px 8px; border-radius: 6px; transition: 0.2s; }
.link-btn:hover { background: rgba(239, 68, 68, 0.1); }

.i2p-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 16px; }

.i2p-thumb {
    position: relative; aspect-ratio: 1 / 1; background: var(--bg-body);
    border: 1px solid var(--border); border-radius: 12px; overflow: hidden;
    cursor: grab; transition: 0.2s;
}
.i2p-thumb:active { cursor: grabbing; }
.i2p-thumb.dragging { opacity: 0.4; }
.i2p-thumb.over { box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.4); transform: scale(0.96); }
.i2p-thumb img { width: 100%; height: 100%; object-fit: contain; display: block; pointer-events: none; }

.i2p-thumb .idx { position: absolute; top: 8px; left: 8px; background: rgba(0,0,0,0.6); color: #fff; font-size: 0.75rem; padding: 4px 8px; border-radius: 6px; }
.i2p-thumb .del {
    position: absolute; top: 6px; right: 6px; width: 24px; height: 24px; padding: 0;
    border: 0; border-radius: 50%; background: rgba(0,0,0,0.6); color: #fff; font-size: 0.85rem;
    display: flex; align-items: center; justify-content: center; cursor: pointer; transition: 0.2s;
}
.i2p-thumb .del:hover { background: var(--danger); }

.i2p-movers { position: absolute; left: 0; right: 0; bottom: 0; display: flex; gap: 1px; opacity: 0; transition: 0.2s; }
.i2p-thumb:hover .i2p-movers { opacity: 1; }
.i2p-movers button { flex: 1; border: 0; padding: 6px 0; background: rgba(0,0,0,0.6); color: #fff; font-size: 0.8rem; cursor: pointer; transition: 0.2s; }
.i2p-movers button:hover { background: rgba(0,0,0,0.9); color: var(--primary); }
@media (hover: none) { .i2p-movers { opacity: 1; } }

/* 侧边栏与表单 */
.i2p-sidebar { position: sticky; top: calc(var(--header-height) + 24px); }
.i2p-sidebar h2 { font-size: 1.1rem; margin: 0 0 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border); color: var(--text); }
.field { margin-bottom: 18px; }
.field > label { display: flex; align-items: center; justify-content: space-between; font-size: 0.9rem; font-weight: 600; margin-bottom: 8px; color: var(--text); }
.field > label span { font-weight: 500; color: var(--primary); }

.i2p-wrapper select {
    width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px;
    background: var(--card); color: var(--text); font-size: 0.95rem; outline: none; cursor: pointer; transition: 0.2s;
}
.i2p-wrapper select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1); }
.i2p-wrapper select:disabled { background: var(--bg-body); color: var(--muted); cursor: not-allowed; }

.i2p-segmented { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; background: var(--bg-body); padding: 4px; border-radius: 10px; border: 1px solid var(--border); }
.i2p-segmented button { border: 0; background: transparent; padding: 8px; border-radius: 8px; font-size: 0.9rem; color: var(--muted); cursor: pointer; transition: 0.2s; font-weight: 500;}
.i2p-segmented button.active { background: var(--card); color: var(--primary); font-weight: 600; box-shadow: 0 1px 3px rgba(0,0,0,0.1); }
.i2p-segmented.disabled { opacity: 0.5; pointer-events: none; }

.i2p-wrapper input[type="range"] { width: 100%; -webkit-appearance: none; appearance: none; height: 6px; border-radius: 3px; background: var(--border); outline: none; margin-top: 6px; }
.i2p-wrapper input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 18px; height: 18px; border-radius: 50%; background: var(--primary); cursor: pointer; border: 3px solid var(--card); box-shadow: 0 1px 4px rgba(0,0,0,0.3); }

.i2p-btn { width: 100%; padding: 14px; border: 0; border-radius: 12px; background: var(--primary); color: #fff; font-size: 1rem; font-weight: 600; cursor: pointer; transition: 0.2s; margin-top: 8px; }
.i2p-btn:hover:not(:disabled) { background: var(--primary-hover); transform: translateY(-2px); box-shadow: 0 6px 15px rgba(var(--primary-rgb), 0.3);}
.i2p-btn:active:not(:disabled) { transform: scale(0.98); }
.i2p-btn:disabled { opacity: 0.5; cursor: not-allowed; }