/* ============================================================
   山风设计系统 · 登录页样式（Login Page）
   ============================================================
   来源：
     主：sms.shanfeng.wang/frontend/src/views/Login.vue
     次：appoint.shanfeng.wang/frontend/src/views/Login.vue
   两站登录页样式经比对完全一致（205 行 / 23 个类 / 0 差异）。

   结构：
     <div class="sf-login-page">
       <div class="sf-login-container">
         <div class="sf-brand-side">
           <div class="sf-brand-content">
             <img class="sf-brand-logo" />
             <h1 class="sf-brand-title">山风网</h1>
             <p class="sf-brand-subtitle">…系统名称</p>
             <div class="sf-brand-divider"></div>
             <p class="sf-brand-desc">…一句话介绍</p>
           </div>
         </div>
         <div class="sf-form-side">
           <div class="sf-form-wrapper">…el-form…</div>
         </div>
       </div>
       <div class="sf-login-footer">Copyright © 2026 山风网络</div>
     </div>
   ============================================================ */

.sf-login-page {
  min-height: 100vh;
  background: #ffffff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.sf-login-page::before {
  content: '';
  position: absolute;
  top: -30%;
  left: -30%;
  width: 160%;
  height: 160%;
  background: transparent;
}

.sf-login-container {
  display: flex;
  width: 920px;
  max-width: 90vw;
  min-height: 520px;
  background: #ffffff;
  border-radius: 20px;
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04),
              0 12px 32px rgba(15, 23, 42, 0.10),
              0 24px 64px rgba(15, 23, 42, 0.08);
  overflow: hidden;
  position: relative;
  z-index: 1;
}

/* ---------- 左侧品牌区 ---------- */
.sf-brand-side {
  flex: 1;
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px;
  position: relative;
}
.sf-brand-content { text-align: center; color: var(--sf-text-primary); }

.sf-brand-logo {
  width: 72px;
  height: 72px;
  border-radius: 16px;
  margin-bottom: 20px;
  object-fit: contain;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.15);
}
.sf-brand-title {
  font-size: 32px;
  font-weight: var(--sf-font-weight-bold);
  color: var(--sf-text-primary);
  margin: 0 0 8px 0;
  letter-spacing: 4px;
}
.sf-brand-subtitle {
  font-size: var(--sf-font-size-lg);
  color: var(--sf-text-secondary);
  margin: 0 0 24px 0;
  letter-spacing: 1px;
}
.sf-brand-divider {
  width: 40px;
  height: 3px;
  background: var(--sf-border-light);
  border-radius: 2px;
  margin: 0 auto 24px;
}
.sf-brand-desc {
  font-size: var(--sf-font-size-base);
  color: var(--sf-text-primary);
  line-height: 1.8;
  max-width: 260px;
  margin: 0 auto 28px;
}
.sf-brand-features { text-align: left; max-width: 220px; margin: 0 auto; }
.sf-feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--sf-font-size-base);
  color: var(--sf-text-primary);
  margin-bottom: 12px;
}
.sf-feature-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--sf-accent);
  flex-shrink: 0;
}

/* ---------- 右侧表单区 ---------- */
.sf-form-side {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px;
}
.sf-form-wrapper { width: 100%; max-width: 320px; }

.sf-form-title {
  font-size: var(--sf-font-size-4xl);
  font-weight: var(--sf-font-weight-bold);
  color: var(--sf-text-primary);
  margin: 0 0 8px 0;
}
.sf-form-hint {
  font-size: var(--sf-font-size-md);
  color: var(--sf-text-muted);
  margin: 0 0 32px 0;
}
.sf-login-form { width: 100%; }

/* 验证码行 */
.sf-captcha-row { display: flex; gap: 12px; width: 100%; }
.sf-captcha-row .el-input { flex: 1; }
.sf-captcha-canvas {
  width: 120px;
  height: 48px;
  border-radius: var(--sf-radius-input);
  cursor: pointer;
  border: 1px solid var(--sf-border-light);
  flex-shrink: 0;
  object-fit: cover;
  display: block;
  background: #f8fafc;
}
.sf-captcha-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--sf-font-size-sm);
  color: var(--sf-text-muted);
  background: #f8fafc;
}

/* 登录按钮 */
.sf-login-btn {
  width: 100%;
  font-size: var(--sf-font-size-lg);
  letter-spacing: 6px;
  height: 46px;
}

/* 页脚与提示 */
.sf-login-footer {
  margin-top: 28px;
  font-size: var(--sf-font-size-md);
  color: var(--sf-text-muted);
  position: relative;
  z-index: 1;
}
.sf-login-warn {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
  padding: 10px 12px;
  border-radius: 8px;
  background: #fff4e5;
  border: 1px solid #ffd591;
  color: #ad6800;
  font-size: var(--sf-font-size-md);
  line-height: 1.4;
}
.sf-login-warn .sf-warn-icon { font-size: 16px; flex-shrink: 0; }

/* ---------- 窄屏 ---------- */
@media (max-width: 768px) {
  .sf-login-container { flex-direction: column; min-height: auto; }
  .sf-brand-side { padding: 36px 24px 24px; }
  .sf-brand-logo { width: 56px; height: 56px; margin-bottom: 14px; }
  .sf-brand-title { font-size: 24px; letter-spacing: 2px; }
  .sf-brand-subtitle { font-size: 14px; margin-bottom: 16px; }
  .sf-brand-divider, .sf-brand-desc, .sf-brand-features { display: none; }
  .sf-form-side { padding: 24px; }
}