:root {
    --neon-blue: #00FFFF;
    --neon-pink: #FF00FF;
    --win-bg: #111;
    --text: #00FFFF;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

body {
    background-color: #000;
    color: var(--text);
    font-family: 'Share Tech Mono', monospace;
    margin: 0; padding: 0;
    overflow-x: hidden;
    height: 100vh;
}

/* 背景特效 */
#matrix-canvas { position: fixed; top: 0; left: 0; z-index: -2; opacity: 0.3; }
.crt-texture {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: repeating-linear-gradient(rgba(0,0,0,0) 0px, rgba(0,0,0,0.05) 1px, rgba(0,0,0,0) 2px);
    background-size: 100% 3px; pointer-events: none; z-index: 100;
}

/* 顶栏 */
.os-header {
    background: var(--neon-blue); color: #000; font-weight: bold;
    padding: 5px 15px; display: flex; justify-content: space-between; font-size: 0.8rem;
}

/* 桌面布局 */
.desktop-layout {
    padding: 15px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 1000px;
    margin: 0 auto;
}

@media (min-width: 800px) {
    .desktop-layout { flex-direction: row; padding-top: 40px; align-items: flex-start; }
}

/* 视窗系统样式 */
.window {
    background: var(--win-bg);
    border: 2px solid var(--neon-blue);
    box-shadow: 5px 5px 0px var(--neon-blue);
    display: flex;
    flex-direction: column;
    flex: 1;
}

.window-title {
    background: var(--neon-blue); color: #000;
    padding: 3px 10px; font-weight: bold; display: flex; justify-content: space-between; font-size: 0.7rem;
}

.win-btns span { margin-left: 5px; border: 1px solid #000; padding: 0 3px; }

.window-content { padding: 15px; }

/* 二维码显示区域修正 */
.qr-output-container {
    background: #ffffff;
    width: 100%;
    aspect-ratio: 1 / 1;
    max-width: 300px;
    margin: 0 auto 15px;
    border: 2px solid #000;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    position: relative;
}

#qr-canvas-wrapper {
    width: 100% !important;
    height: 100% !important;
    display: flex;
    justify-content: center;
    align-items: center;
}

#qr-canvas-wrapper svg, #qr-canvas-wrapper canvas {
    width: 90% !important; /* 物理内缩，彻底解决码眼被遮挡 */
    height: 90% !important;
}

/* 按钮 */
.action-bar { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.win-btn {
    background: transparent; border: 1px solid var(--neon-blue);
    color: var(--neon-blue); padding: 10px; cursor: pointer; font-family: inherit; font-weight: bold;
}
.win-btn.primary { background: var(--neon-blue); color: #000; }
.win-btn:active { transform: translate(2px, 2px); }

/* 配置项 */
.config-group { margin-bottom: 12px; }
.config-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 12px; }

label { display: block; font-size: 0.7rem; color: var(--neon-pink); margin-bottom: 5px; text-transform: uppercase; }

textarea, select, input {
    width: 100%; background: #000; border: 1px solid var(--neon-blue);
    color: var(--neon-blue); padding: 8px; font-family: inherit; font-size: 1rem;
}

.presets-bar { margin-top: 20px; border-top: 1px dashed var(--neon-blue); padding-top: 10px; }
.preset-links { display: flex; gap: 10px; margin-top: 5px; }
.preset-links span { cursor: pointer; text-decoration: underline; font-size: 0.8rem; }
.preset-links span:hover { color: white; }