@font-face {
    font-family: 'InstrumentSerif';
    src: url('../fonts/InstrumentSerif-Regular.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    background: #fff;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

@media (max-width: 900px), (max-aspect-ratio: 9/16) {
    body, html {
        overflow-x: hidden;
        overflow-y: auto;
        min-height: 100vh;
    }
}

#app-container {
    display: flex;
    width: 100%;
    height: 100vh;
    min-height: 100vh;
}

#canvas-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: #fff;
}

@media (max-width: 900px), (max-aspect-ratio: 9/16) {
    #app-container {
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        min-height: 100vh;
        height: auto;
    }

    #canvas-container {
        width: 100%;
        min-height: 100vh;
        height: 100vh;
        align-items: center;
        justify-content: center;
    }

    #canvas-frame {
        width: min(90vw, calc(90vh * 9 / 16));
        max-height: 90vh;
        margin: 0 auto;
    }

    #control-panel {
        width: min(100%, 100vw);
        max-width: 100%;
        height: auto;
        padding: 20px 20px calc(32px + 5vh);
        margin-top: 20px;
        margin-bottom: 5vh;
    }
}

canvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* 新增：画布外框，固定为竖向 9:16 比例，默认高度 90vh，窄屏时宽度撑满并等比缩放 */
#canvas-frame {
    width: min(100%, calc(90vh * 9 / 16));
    aspect-ratio: 9 / 16;
    max-height: 90vh;
    height: auto;
    position: relative;
    margin: 0 16px; /* 在左右保留留白 */
    box-sizing: border-box;
}

/* 保持原有 style.css 的全部属性，在 Canvas 叠放层级部分加入以下样式控制 */

#gl-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1; /* 底层 WebGL 流体 */
}

#layer3-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2; /* 中层 衬线代码网 */
    pointer-events: none;
}

#layer2-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 3; /* 高层 占位符矩阵块 */
    pointer-events: none;
}

#layer1-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 4; /* 顶层 绝对最高信息覆膜 */
    pointer-events: none; /* 确保鼠标手势穿透 */
    display: none; /* 初始隐藏，由 JS 引擎判定宽高比符合竖版时开启 */
}

#layer1-container img {
    position: absolute;
    width: 100%; /* 宽度和海报画布画面保持一致 */
    left: 0;
    display: block;
}

/* 顶着最上方 */
#layer1-top {
    top: 0;
}

/* 完全纵向垂直居中 */
#layer1-middle {
    top: 50%;
    transform: translateY(-50%);
}

/* 顶着最下方 */
#layer1-bottom {
    bottom: 0;
}

#layer3-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

#layer2-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 3; /* 占位符置于文字之上 */
    pointer-events: none;
}

#control-panel {
    width: 340px;
    height: 100%;
    background: transparent;
    border-left: none;
    box-sizing: border-box;
    padding: 24px;
    overflow-y: auto;
    z-index: 10;
}

h3 {
    margin-top: 0;
    margin-bottom: 24px;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: #969696;
    border-bottom: 1px solid #e5e5e5;
    padding-bottom: 12px;
}

.layer-section {
    padding: 6px 0;
}

.layer-header {
    display: flex;
    align-items: center;
}

details {
    flex: 1;
    width: 100%;
}

summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    font-size: 12px;
    font-weight: 600;
    color: #969696;
    padding: 6px 0;
    cursor: pointer;
    outline: none;
    letter-spacing: 0.5px;
    user-select: none;
    border: none;
    margin: 0;
}

.summary-title {
    display: flex;
    flex: 1;
    min-width: 0;
    align-items: center;
    gap: 12px;
}

.summary-ch {
    flex: 1;
    min-width: 0;
    text-align: left;
}

.summary-en {
    flex: 1;
    text-align: right;
    opacity: 0.72;
}

summary:hover {
    color: #666;
}

summary::after {
    content: '';
    width: 16px;
    height: 16px;
    display: inline-block;
    margin-left: 12px;
    background-image: url('/images/fold.svg');
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
}

details[open] > summary::after {
    background-image: url('/images/unfold.svg');
}

.details-content {
    padding: 10px 4px 8px 4px;
    background: transparent;
    border: none;
}

.placeholder-text {
    font-family: monospace;
    font-size: 11px;
    color: #999;
    margin: 0;
    padding: 14px;
    border: none;
    border-radius: 0;
    background: transparent;
}

.control-group {
    margin-bottom: 12px;
}

.control-group label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: #969696;
    margin-bottom: 6px;
    letter-spacing: 0.5px;
    gap: 16px;
}

.label-ch {
    flex: 1;
    min-width: 0;
    text-align: left;
}

.label-en {
    flex: 1;
    min-width: 0;
    text-align: right;
    opacity: 0.72;
}

.control-group label span.val {
    font-family: monospace;
    color: #969696;
}

.control-group input[type="range"] {
    width: 100%;
    -webkit-appearance: none;
    background: #e0e0e0;
    height: 2px;
    outline: none;
}

.control-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #969696;
    cursor: pointer;
}

.visibility-toggle {
    display: none;
}

.visibility-toggle input {
    display: none;
}

.eye-icon {
    display: none;
}

/* 隐藏原生 details 小三角（各浏览器） */
summary { list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::marker { content: none; }

/* 自定义选择行排版样式 */
.custom-ui-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.custom-ui-row label {
    font-size: 11px;
    color: #666;
    margin-bottom: 0;
    letter-spacing: 0.5px;
}

#u_text_color, #u_box_color {
    -webkit-appearance: none;
    border: 1px solid #e0e0e0;
    background: none;
    width: 36px;
    height: 18px;
    cursor: pointer;
    padding: 0;
    border-radius: 2px;
}
#u_text_color::-webkit-color-swatch-wrapper, #u_box_color::-webkit-color-swatch-wrapper { padding: 0; }
#u_text_color::-webkit-color-swatch, #u_box_color::-webkit-color-swatch { border: none; border-radius: 2px; }

#u_blend_mode, #u_box_blend_mode, #u_layer1_blend_mode {
    font-family: monospace;
    font-size: 11px;
    color: #969696;
    border: 1px solid #e0e0e0;
    background: #fff;
    padding: 2px 6px;
    outline: none;
    cursor: pointer;
    border-radius: 2px;
}