/**
 * 前台统一样式 - 干净专业风格
 * 授权查询 / 更换授权 / 卡密激活 / 引导页
 */

/* ===== 颜色配置 ===== */
:root {
    --c-primary: #4a6cf7;
    --c-primary-hover: #3b5de7;
    --c-bg: #f1f5f9;
    --c-card: #ffffff;
    --c-border: #e2e8f0;
    --c-text: #1e293b;
    --c-text-sub: #64748b;
    --c-radius: 10px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--c-bg);
    color: var(--c-text);
    font-size: 14px;
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--c-primary);
    text-decoration: none;
}

a:hover {
    color: var(--c-primary-hover);
}

/* ===== 页面容器 ===== */
.page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

/* ===== 卡片 ===== */
.card {
    background: var(--c-card);
    border: 1px solid var(--c-border);
    border-radius: var(--c-radius);
    width: 100%;
    max-width: 420px;
    padding: 32px 28px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

/* ===== 标题区域 ===== */
.page-header {
    text-align: center;
    margin-bottom: 28px;
}

.page-header h1 {
    font-size: 20px;
    font-weight: 600;
    color: var(--c-text);
    margin-bottom: 6px;
}

.page-header p {
    font-size: 13px;
    color: var(--c-text-sub);
}

/* ===== 表单 ===== */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--c-text);
    margin-bottom: 6px;
}

.form-input {
    width: 100%;
    height: 42px;
    padding: 0 14px;
    border: 1px solid var(--c-border);
    border-radius: 8px;
    font-size: 14px;
    color: var(--c-text);
    background: #fff;
    outline: none;
    transition: border-color 0.2s;
}

.form-input:focus {
    border-color: var(--c-primary);
}

.form-input::placeholder {
    color: #94a3b8;
}

.form-select {
    width: 100%;
    height: 42px;
    padding: 0 14px;
    border: 1px solid var(--c-border);
    border-radius: 8px;
    font-size: 14px;
    color: var(--c-text);
    background: #fff;
    outline: none;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
}

.form-select:focus {
    border-color: var(--c-primary);
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 42px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--c-primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--c-primary-hover);
}

.btn-primary:disabled {
    background: #94a3b8;
    cursor: not-allowed;
}

/* 引导页按钮组 */
.btn-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.btn-outline {
    background: #fff;
    color: var(--c-text);
    border: 1px solid var(--c-border);
}

.btn-outline:hover {
    background: #f8fafc;
    border-color: #cbd5e1;
}

/* ===== 链接区 ===== */
.links {
    text-align: center;
    margin-top: 20px;
    font-size: 13px;
    color: var(--c-text-sub);
}

.links a {
    color: var(--c-text-sub);
    margin: 0 6px;
}

.links a:hover {
    color: var(--c-primary);
}

/* ===== 页脚 ===== */
.footer {
    margin-top: auto;
    padding: 20px;
    text-align: center;
    font-size: 12px;
    color: var(--c-text-sub);
}

/* ===== 响应式 ===== */
@media screen and (max-width: 480px) {
    .card {
        padding: 24px 20px;
    }

    .page-header h1 {
        font-size: 18px;
    }
}