html[data-theme="dark"] .ai3d-upload:not(.is-multi) {
    background:
        radial-gradient(ellipse 80% 50% at 50% 0%, rgba(46, 97, 255, 0.12), transparent 55%),
        linear-gradient(180deg, rgba(14, 20, 32, 0.95), rgba(10, 14, 24, 0.95));
    border-color: rgba(78, 130, 255, 0.35);
    position: relative;
    overflow: hidden;
}

html[data-theme="dark"] .ai3d-upload:not(.is-multi)::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, transparent 0%, rgba(46, 97, 255, 0.04) 50%, transparent 100%);
    background-size: 200% 100%;
    animation: uploadShimmer 3s ease-in-out infinite;
    pointer-events: none;
}

@keyframes uploadShimmer {
    0% { background-position: -100% 0; }
    100% { background-position: 200% 0; }
}

html[data-theme="dark"] .ai3d-upload:not(.is-multi):hover {
    border-color: rgba(78, 130, 255, 0.55);
    box-shadow: 0 0 20px rgba(46, 97, 255, 0.15), inset 0 0 30px rgba(46, 97, 255, 0.05);
}

html[data-theme="dark"] .ai3d-upload .btn {
    background:
        linear-gradient(135deg, rgba(46, 97, 255, 0.3), rgba(30, 70, 200, 0.25)),
        radial-gradient(circle at 50% 50%, rgba(100, 140, 255, 0.2), transparent 70%);
    border: 1px solid rgba(78, 130, 255, 0.45);
    box-shadow: 0 4px 16px rgba(46, 97, 255, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

html[data-theme="dark"] .ai3d-upload .btn:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 6px 24px rgba(46, 97, 255, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.15);
    border-color: rgba(120, 160, 255, 0.6);
}

/* ========== 科技艺术：输入框强化 ========== */
html[data-theme="dark"] .ai3d-input:not([disabled]),
html[data-theme="dark"] .ai3d-textarea:not([disabled]) {
    background:
        linear-gradient(180deg, rgba(18, 26, 40, 0.98), rgba(12, 18, 28, 0.98));
    border: 1px solid rgba(78, 130, 255, 0.3);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.05),
        0 0 0 3px rgba(46, 97, 255, 0.08);
    transition: all 0.25s ease;
}

html[data-theme="dark"] .ai3d-input:not([disabled]):focus,
html[data-theme="dark"] .ai3d-textarea:not([disabled]):focus {
    border-color: rgba(78, 130, 255, 0.6);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.08),
        0 0 0 3px rgba(46, 97, 255, 0.18),
        0 0 20px rgba(46, 97, 255, 0.1);
    outline: none;
}

html[data-theme="dark"] .ai3d-input:not([disabled]):hover:not(:focus),
html[data-theme="dark"] .ai3d-textarea:not([disabled]):hover:not(:focus) {
    border-color: rgba(78, 130, 255, 0.45);
}

/* ========== 科技艺术：左侧面板区块发光效果 ========== */
html[data-theme="dark"] .ai3d-left .sec {
    background:
        linear-gradient(180deg, rgba(16, 23, 38, 0.6), rgba(12, 18, 28, 0.6));
    border: 1px solid rgba(60, 100, 180, 0.2);
    border-radius: 12px;
    padding: 16px;
    position: relative;
    overflow: hidden;
}

html[data-theme="dark"] .ai3d-left .sec::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(78, 130, 255, 0.4), transparent);
}

html[data-theme="dark"] .ai3d-left .sec:hover {
    border-color: rgba(60, 100, 180, 0.35);
    box-shadow: 0 4px 20px rgba(46, 97, 255, 0.1);
}

html[data-theme="dark"] .ai3d-left .lab {
    color: #8fa8c8;
    text-shadow: 0 0 10px rgba(78, 130, 255, 0.3);
}

/* ========== 科技艺术：滑块强化 ========== */
html[data-theme="dark"] .ai3d-slider input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: linear-gradient(90deg, rgba(46, 97, 255, 0.3), rgba(46, 97, 255, 0.15));
    outline: none;
}

html[data-theme="dark"] .ai3d-slider input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, #4d88ff, #2e61ff);
    cursor: pointer;
    border: 2px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 2px 8px rgba(46, 97, 255, 0.4);
    transition: all 0.2s ease;
}

html[data-theme="dark"] .ai3d-slider input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 4px 16px rgba(46, 97, 255, 0.5);
}

html[data-theme="dark"] .ai3d-slider input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, #4d88ff, #2e61ff);
    cursor: pointer;
    border: 2px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 2px 8px rgba(46, 97, 255, 0.4);
}

/* ========== 科技艺术：选择器强化 ========== */
html[data-theme="dark"] .ai3d-select select,
html[data-theme="dark"] .ai3d-input select {
    background:
        linear-gradient(180deg, rgba(18, 26, 40, 0.98), rgba(12, 18, 28, 0.98));
    border: 1px solid rgba(78, 130, 255, 0.3);
    color: #e6ebf7;
    cursor: pointer;
}

html[data-theme="dark"] .ai3d-select select:focus,
html[data-theme="dark"] .ai3d-input select:focus {
    border-color: rgba(78, 130, 255, 0.6);
    box-shadow: 0 0 0 3px rgba(46, 97, 255, 0.18);
    outline: none;
}