/* ── 认证页面 — 简洁居中布局 ─────────────────────────────────── */

.auth-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

.auth-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    background:
        radial-gradient(ellipse 70% 50% at 50% -10%, rgba(26, 86, 219, 0.07) 0%, transparent 55%),
        linear-gradient(180deg, var(--color-bg-subtle) 0%, var(--color-bg) 40%);
}

/* ── 顶栏 ────────────────────────────────────────────────────── */

.auth-header {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 440px;
    width: 100%;
    margin: 0 auto;
    padding: 28px 24px 0;
}

.auth-header-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition);
}

.auth-header-link:hover {
    color: var(--color-primary);
}

/* ── 主内容 ──────────────────────────────────────────────────── */

.auth-main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    padding: 32px 24px 48px;
}

.auth-box {
    width: 100%;
    max-width: 400px;
}

.auth-title {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-text);
    margin-bottom: 8px;
}

.auth-subtitle {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    margin-bottom: 36px;
}

/* ── 表单 ────────────────────────────────────────────────────── */

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-field label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: 6px;
}

.form-input {
    width: 100%;
    padding: 11px 14px;
    font-family: var(--font);
    font-size: 0.9375rem;
    color: var(--color-text);
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-input::placeholder {
    color: var(--color-text-muted);
}

.form-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
}

.form-check {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    user-select: none;
}

.form-check input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.auth-btn {
    width: 100%;
    padding: 12px;
    margin-top: 4px;
    font-size: 0.9375rem;
}

.auth-alt {
    margin-top: 28px;
    text-align: center;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.auth-alt a {
    color: var(--color-primary);
    font-weight: 500;
    margin-left: 4px;
}

.auth-alt a:hover {
    color: var(--color-primary-dark);
}

/* ── 页脚 ────────────────────────────────────────────────────── */

.auth-footer {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 24px;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* ── 响应式 ──────────────────────────────────────────────────── */

@media (max-width: 480px) {
    .auth-header {
        padding-top: 20px;
    }

    .auth-title {
        font-size: 1.5rem;
    }

    .auth-subtitle {
        margin-bottom: 28px;
    }
}