/*! 由 ./music/upload.html 内联 <style> 原样提取，勿手改（保持视觉一致） */

*{margin:0;padding:0;box-sizing:border-box;}
:root {
    --primary: #87CEEB;
    --primary-dark: #4682B4;
    --bg: #E6F7FF;
    --card: #FFFFFF;
    --text: #333;
    --gray: #666;
    --alert-bg: #003366;
    --gap-sm: 8px;
    --gap-md: 16px;
    --gap-lg: 24px;
    --padding-sm: 12px;
    --padding-md: 20px;
    --padding-lg: 30px;
    --device-shadow: 0 0 20px rgba(0,0,0,0.15);
}
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: #f0f4f8;
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-size: 16px;
}
.navbar {
    background: var(--primary);
    padding: 12px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    width: 100%;
}
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--padding-sm);
}
.logo {
    font-size: clamp(1.2rem, 4vw, 1.5rem);
    font-weight: bold;
    color: var(--primary-dark);
    text-decoration: none;
}
.nav-links {
    display: flex;
    gap: clamp(12px, 3vw, 20px);
}
.nav-links a {
    color: var(--primary-dark);
    font-weight: 500;
    text-decoration: none;
    font-size: clamp(0.9rem, 3vw, 1rem);
}
.nav-links a:hover, .nav-links a.active {
    text-decoration: underline;
    font-weight: 600;
}
.back-link {
    color: var(--primary-dark);
    text-decoration: none;
    font-size: 1rem;
    display: inline-block;
    margin-bottom: 10px;
    align-self: flex-start;
}
.page-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 var(--padding-sm);
}
.container {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: clamp(var(--padding-md), 5vw, var(--padding-lg)) var(--padding-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--gap-lg);
}
.card {
    background: var(--card);
    width: 100%;
    max-width: 800px;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(135, 206, 235, 0.4);
    padding: clamp(var(--padding-md), 5vw, var(--padding-lg));
}
.card h2 {
    color: var(--primary-dark);
    text-align: center;
    margin-bottom: var(--gap-lg);
    font-size: clamp(1.5rem, 5vw, 2rem);
}
.form-group { 
    margin-bottom: var(--gap-md); 
}
.form-group label {
    display: block;
    margin-bottom: var(--gap-sm);
    color: var(--primary-dark);
    font-weight: 500;
}
.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
}
.btn {
    display: inline-block;
    padding: 10px 20px;
    background: var(--primary-dark);
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    transition: background .2s;
}
.btn:hover { 
    background: #35729b; 
}
.btn:disabled {
    background: #999;
    cursor: not-allowed;
}
.tip{
    font-size: 12px;
    color: #666;
    margin-top: 4px;
    line-height: 1.4;
}
.warn{
    color: #d9534f;
    font-weight: bold;
}
.system-tag {
    color: #4682B4;
    font-weight: 600;
    font-size: 12px;
}
#list{
    margin-top: 20px;
}
.item{
    padding: 12px;
    border-bottom: 1px solid #eee;
}
.item .name{
    font-weight: bold;
    color: var(--primary-dark);
}
.item .time{
    font-size: 12px;
    color: #666;
    margin-top: 4px;
}
.item .file-info {
    font-size: 12px;
    color: #555;
    margin-top: 2px;
}
.anti-scam-bar {
    background: var(--alert-bg);
    color: #fff;
    text-align: center;
    padding: 12px 20px;
    font-weight: bold;
    border-top: 3px solid var(--primary);
    width: 100%;
}
footer {
    text-align: center;
    padding: var(--padding-md);
    background: var(--primary);
    color: var(--primary-dark);
    font-size: 0.9rem;
    width: 100%;
}
input[type="file"] {
    padding: 6px;
    border: none;
    background: #f8f9fa;
    cursor: pointer;
    border-radius: 8px;
}