:root {
    --bg-gradient: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    --card-bg: rgba(255, 255, 255, 0.65);
    --card-border: rgba(255, 255, 255, 0.8);
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --accent: #3b82f6; 
    --accent-hover: #2563eb; /* 按钮悬停色 */
    --success: #10b981;
    --error: #ef4444;
    --shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    --radius: 24px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    background: var(--bg-gradient);
    font-family: 'Inter', -apple-system, sans-serif;
    color: var(--text-primary);
    min-height: 100vh;
    padding: 20px;
    position: relative;
    overflow-x: hidden;
}

.background-shape {
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    z-index: -1;
    opacity: 0.6;
}
.shape-1 { width: 400px; height: 400px; background: #a78bfa; top: -100px; left: -100px; }
.shape-2 { width: 300px; height: 300px; background: #60a5fa; bottom: -50px; right: -50px; }

.container {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* 卡片通用 */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 45px 40px;
    box-shadow: var(--shadow);
}

/* --- Top Card --- */
.hero-card { text-align: center; }
.status-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.refresh-timer { font-size: 0.8rem; color: var(--text-secondary); font-variant-numeric: tabular-nums;}
.status-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 12px; border-radius: 20px;
    background: rgba(255,255,255,0.5);
    font-weight: 600; font-size: 0.9rem;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: #999; }
.status-badge.online { color: var(--success); background: rgba(16, 185, 129, 0.1); }
.status-badge.online .dot { background: var(--success); box-shadow: 0 0 8px var(--success); }
.status-badge.offline { color: var(--error); background: rgba(239, 68, 68, 0.1); }
.status-badge.offline .dot { background: var(--error); }

.server-title { font-size: 1.8rem; margin-bottom: 25px; letter-spacing: -0.5px; }
.ip-container { margin-bottom: 30px; }
.ip-label { font-size: 0.75rem; text-transform: uppercase; color: var(--text-secondary); letter-spacing: 1px; margin-bottom: 5px; }
.ip-address { 
    font-family: 'JetBrains Mono', monospace; 
    font-size: 1.6rem; font-weight: 700; color: var(--accent);
    background: rgba(59, 130, 246, 0.05);
    padding: 10px; border-radius: 12px;
    display: inline-block; user-select: all;
}
.ip-sub { font-size: 0.85rem; color: var(--text-secondary); margin-top: 8px; }
.stats-row { 
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; 
    border-top: 1px solid rgba(0,0,0,0.05); padding-top: 25px; 
}
.stat-item { display: flex; flex-direction: column; gap: 4px; }
.stat-label { font-size: 0.8rem; color: var(--text-secondary); }
.stat-value { font-size: 1.2rem; font-weight: 600; }

/* --- Grid Section --- */
.grid-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-row .card {
    display: flex;
    min-height: 420px;
    flex-direction: column;
}
h3 { font-size: 1.1rem; margin-bottom: 15px; color: var(--text-primary); }

/* 整合包信息 */
.modpack-info { display: flex; flex-direction: column; flex-grow: 1; }
.mp-name { font-size: 1.3rem; font-weight: 700; }
.mp-version { color: var(--accent); font-family: 'JetBrains Mono', monospace; font-size: 0.9rem; }

/* 标签样式 (调整了间距) */
.tags { display: flex; gap: 8px; flex-wrap: wrap; margin: 10px 0 15px 0; }
.tag { font-size: 0.75rem; padding: 4px 8px; background: rgba(0,0,0,0.05); border-radius: 6px; color: var(--text-secondary); }

.mp-desc { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; margin-bottom: -20px; flex-grow: 1; }

/* 下载按钮样式 */
.btn-download {
    display: block;
    text-align: center;
    background: var(--accent);
    color: white;
    text-decoration: none;
    padding: 12px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: background 0.3s ease, transform 0.2s ease;
}
.btn-download:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

/* 联系我们卡片 */
.contact-card { display: flex; flex-direction: column; }
.contact-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}
.contact-content p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 20px; }
.email-link {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.2rem;
    color: var(--text-primary);
    text-decoration: none;
    border-bottom: 2px solid var(--accent);
    padding-bottom: 2px;
    transition: color 0.3s;
}
.email-link:hover { color: var(--accent); }
.email-note { font-size: 0.75rem; color: var(--text-secondary); margin-top: 15px; opacity: 0.7; }


/* --- DDNS Help --- */
.ddns-explanation { 
    background: rgba(255,200,0,0.1); border-radius: 12px; padding: 15px; 
    margin-bottom: 20px; border: 1px solid rgba(255,200,0,0.2); 
}
.ddns-explanation h4 { font-size: 0.95rem; margin-bottom: 5px; color: #b45309; }
.ddns-explanation p { font-size: 0.85rem; color: #92400e; line-height: 1.4; }

.cmd-guide { display: grid; gap: 15px; }
.step-title { font-weight: 600; font-size: 0.9rem; display: block; margin-bottom: 4px; }
.code-block { 
    display: block; width: 100%;
    background: #1e1e1e; color: #a5f3fc;
    padding: 12px; border-radius: 8px;
    font-family: 'JetBrains Mono', monospace; font-size: 0.85rem;
    margin-top: 6px; position: relative; overflow-x: auto;
}

@media (max-width: 768px) {
    .grid-row { grid-template-columns: 1fr; }
    .server-title { font-size: 1.5rem; }
    .ip-address { font-size: 1.2rem; }
    .card { padding: 25px; } /* 手机上还是保持紧凑一点 */
    .grid-row .card { min-height: auto; } /* 手机上取消强制高度，由内容决定 */
}