/* ========================================
   MAC 地址验证工具样式
   ======================================== */

html, body { height: 100%; overflow: hidden; margin: 0; }
body { display: flex; align-items: center; justify-content: center; padding-top: 70px; }

.main-content {
    width: 100%; max-width: 800px; height: calc(100vh - 120px);
    display: flex; align-items: center; padding: 0 20px; padding-bottom: 50px; z-index: 10;
}
.container { width: 100%; height: 100%; }
.tool-card {
    background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-xl);
    overflow: hidden; display: flex; flex-direction: column; width: 100%; height: 100%;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* 输入区 */
.mac-input-section { padding: 16px; background: rgba(0,0,0,0.2); border-bottom: 1px solid var(--border-color); flex-shrink: 0; }
.mac-input-row { display: flex; gap: 12px; align-items: center; }
.mac-input {
    flex: 1; padding: 12px 16px; background: rgba(255,255,255,0.05); border: 1px solid var(--border-color);
    border-radius: var(--radius-md); color: var(--text-primary); font-size: 15px; outline: none;
    font-family: var(--font-mono);
}
.mac-input:focus { border-color: var(--primary-color); }
.mac-input::placeholder { color: var(--text-muted); }
.mac-btn {
    padding: 12px 24px; border-radius: var(--radius-md); border: none; cursor: pointer;
    font-size: 14px; font-weight: 600; display: flex; align-items: center; gap: 8px; transition: 0.2s;
    background: linear-gradient(135deg, #8b5cf6, #7c3aed); color: white;
}
.mac-btn:hover { box-shadow: 0 4px 15px rgba(139,92,246,0.4); transform: translateY(-1px); }
.mac-presets { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; align-items: center; }
.mac-tip-label { font-size: 12px; color: var(--text-muted); font-weight: 600; }
.mac-preset-btn {
    padding: 4px 12px; border-radius: 20px; border: 1px solid var(--border-color);
    background: transparent; color: var(--text-muted); cursor: pointer; font-size: 12px; transition: 0.2s;
}
.mac-preset-btn:hover { color: var(--text-primary); border-color: #8b5cf6; background: rgba(139,92,246,0.1); }

/* 结果区 */
.mac-result-section { flex: 1; overflow-y: auto; padding: 20px; }
.mac-result-header { padding: 16px; border-radius: var(--radius-md); margin-bottom: 16px; display: flex; align-items: center; gap: 12px; }
.mac-result-header.valid { background: rgba(34,197,94,0.1); border: 1px solid rgba(34,197,94,0.2); }
.mac-result-header.invalid { background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.2); }
.mac-result-icon { font-size: 28px; }
.mac-result-header.valid .mac-result-icon { color: #22c55e; }
.mac-result-header.invalid .mac-result-icon { color: #ef4444; }
.mac-result-text h3 { font-size: 16px; margin-bottom: 4px; }
.mac-result-header.valid .mac-result-text h3 { color: #22c55e; }
.mac-result-header.invalid .mac-result-text h3 { color: #ef4444; }
.mac-result-text p { font-size: 13px; color: var(--text-muted); }

.mac-details-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin-bottom: 16px; }
.mac-detail-item { background: rgba(255,255,255,0.03); border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 12px; }
.mac-detail-label { font-size: 11px; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 4px; }
.mac-detail-value { font-size: 14px; color: var(--text-primary); font-family: var(--font-mono); }

.mac-format-section { margin-top: 0; }
.mac-format-list { display: flex; flex-direction: column; gap: 8px; padding: 12px; }
.mac-format-item {
    display: flex; justify-content: space-between; align-items: center; padding: 10px 14px;
    background: rgba(255,255,255,0.03); border: 1px solid var(--border-color); border-radius: var(--radius-md);
}
.mac-format-label { font-size: 13px; color: var(--text-muted); }
.mac-format-value { font-family: var(--font-mono); font-size: 14px; color: var(--text-primary); }
.mac-copy-btn {
    padding: 4px 10px; border-radius: var(--radius-sm); border: 1px solid var(--border-color);
    background: transparent; color: var(--text-muted); cursor: pointer; font-size: 11px; transition: 0.2s;
}
.mac-copy-btn:hover { color: var(--primary-color); border-color: var(--primary-color); }

@media (max-width: 600px) {
    .mac-input-row { flex-direction: column; }
    .mac-btn { width: 100%; justify-content: center; }
    .mac-details-grid { grid-template-columns: 1fr; }
}