/* 白可云建站 - 全局样式 */
:root {
    --green: #2ecc71;
    --white: #ffffff;
    --blue: #3498db;
    --red: #e74c3c;
    --success: #27ae60;
    --warning: #f1c40f;
    --bg: #f5f6fa;
    --text: #2c3e50;
}
* { margin:0; padding:0; box-sizing:border-box; }
body {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
.container {
    max-width: 960px;
    margin: 20px auto;
    padding: 20px;
    flex: 1;
}
h1, h2, h3 { color: var(--green); margin-bottom: 15px; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* 表单 */
.form-group { margin-bottom: 18px; }
.form-group label { display: block; margin-bottom: 5px; font-weight: 600; color: #555; }
.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 11px 14px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 0.95em;
    transition: border 0.3s;
    outline: none;
}
.form-group input:focus, .form-group textarea:focus {
    border-color: var(--green);
}
.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1em;
    font-weight: 600;
    text-align: center;
    transition: background 0.2s, transform 0.1s;
}
.btn-primary { background: var(--green); color: #fff; }
.btn-primary:hover { background: #27ae60; }
.btn-danger { background: var(--red); color: #fff; }
.btn-danger:hover { background: #c0392b; }
.btn-sm { padding: 8px 16px; font-size: 0.9em; }

/* 提醒框 */
.alert {
    padding: 14px 18px;
    border-radius: 8px;
    margin-bottom: 18px;
    font-size: 0.9em;
    border-left: 5px solid;
}
.alert-error { background: #ffeaea; color: var(--red); border-color: var(--red); }
.alert-success { background: #e8f8f0; color: var(--success); border-color: var(--success); }
.alert-warning { background: #fef9e7; color: #b7950b; border-color: var(--warning); }

/* 页脚 */
.footer {
    text-align: center;
    padding: 16px;
    color: #aaa;
    font-size: 0.8em;
    border-top: 1px solid #eee;
    margin-top: auto;
}

/* 响应式 */
@media (max-width: 600px) {
    .container { padding: 15px; }
    h1 { font-size: 1.5em; }
    .btn { width: 100%; }
}