/* auth.css — 登录 / 注册 / 修改密码 共享样式
   风格参照「璀璨宝石对局录制工具」参考图:
   - 居中白色卡片 + 柔和阴影 + 大圆角
   - 顶部 3D 多色钻石 logo + 主副标题
   - 输入框带左侧图标 + 主按钮青绿色
   - 底部双链接布局
   仅覆盖三个认证页面,不动 app.css 的全局视觉系统。
*/

/* ---- 主题变量 ---- */
:root {
  --auth-bg: #f5f7f9;            /* 页面背景 */
  --auth-card-bg: #ffffff;
  --auth-card-shadow: 0 8px 32px rgba(15, 23, 42, 0.06),
                      0 2px 8px rgba(15, 23, 42, 0.04);
  --auth-radius: 16px;
  --auth-border: #e5e7eb;
  --auth-fg: #1f2937;
  --auth-fg-muted: #9ca3af;
  --auth-fg-subtle: #6b7280;
  --auth-primary: #0f766e;       /* 青绿色,参考图主色 */
  --auth-primary-hover: #115e59;
  --auth-primary-soft: #f0fdfa;
  --auth-danger: #dc2626;
  --auth-icon: #9ca3af;
  --auth-icon-focus: #0f766e;
  --auth-input-bg: #ffffff;
  --auth-divider: #f1f5f9;
}
/* 暗色模式:沿用系统主题,与 app.css 的 dark 变量协调 */
@media (prefers-color-scheme: dark) {
  :root {
    --auth-bg: #0f172a;
    --auth-card-bg: #1e293b;
    --auth-card-shadow: 0 8px 32px rgba(0, 0, 0, 0.4),
                        0 2px 8px rgba(0, 0, 0, 0.2);
    --auth-border: #334155;
    --auth-fg: #f1f5f9;
    --auth-fg-muted: #64748b;
    --auth-fg-subtle: #94a3b8;
    --auth-primary: #14b8a6;
    --auth-primary-hover: #2dd4bf;
    --auth-primary-soft: #134e4a;
    --auth-danger: #f87171;
    --auth-icon: #64748b;
    --auth-icon-focus: #14b8a6;
    --auth-input-bg: #0f172a;
    --auth-divider: #1e293b;
  }
}

/* ---- 页面布局 ---- */
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--auth-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Helvetica Neue",
        "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--auth-fg);
  min-height: 100vh;
}

/* ---- 卡片 ---- */
.auth-card {
  width: 100%;
  max-width: 400px;
  background: var(--auth-card-bg);
  border-radius: var(--auth-radius);
  box-shadow: var(--auth-card-shadow);
  padding: 36px 32px 28px;
}

/* ---- 顶部品牌区(logo + 标题 + 副标题) ---- */
.auth-brand {
  text-align: center;
  margin-bottom: 24px;
}
.auth-logo {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  display: block;
  filter: drop-shadow(0 4px 10px rgba(15, 118, 110, 0.18));
}
.auth-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--auth-fg);
  margin: 0 0 6px;
  letter-spacing: 0.02em;
}
.auth-subtitle {
  font-size: 13px;
  color: var(--auth-fg-muted);
  margin: 0;
  letter-spacing: 0.04em;
}

/* ---- 表单 ---- */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* 输入字段容器:相对定位,用于图标绝对定位 */
.auth-field {
  position: relative;
}
.auth-field input {
  width: 100%;
  height: 44px;
  padding: 0 44px 0 40px;   /* 左 40 让出图标,右 44 让出可能的小图标 */
  font-size: 14px;
  font-family: inherit;
  color: var(--auth-fg);
  background: var(--auth-input-bg);
  border: 1px solid var(--auth-border);
  border-radius: 10px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.auth-field input::placeholder {
  color: var(--auth-fg-muted);
}
.auth-field input:hover {
  border-color: #cbd5e1;
}
.auth-field input:focus {
  border-color: var(--auth-primary);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
}
/* 字段级错误状态:与 aria-invalid 配合使用 */
.auth-field input[aria-invalid="true"] {
  border-color: var(--auth-danger);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

/* 输入框左侧图标 */
.auth-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--auth-icon);
  pointer-events: none;
}
.auth-field input:focus ~ .auth-icon,
.auth-field input:focus + .auth-icon {
  color: var(--auth-icon-focus);
}

/* 密码右侧的「显示 / 隐藏」按钮 */
.auth-toggle {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  padding: 0;
  cursor: pointer;
  color: var(--auth-icon);
  border-radius: 6px;
  transition: color 0.15s ease, background 0.15s ease;
}
.auth-toggle:hover {
  color: var(--auth-primary);
  background: var(--auth-primary-soft);
}
.auth-toggle svg { width: 16px; height: 16px; }

/* ---- 错误提示 ---- */
.auth-error {
  min-height: 18px;
  font-size: 12px;
  color: var(--auth-fg-muted);
  padding: 2px 2px 0;
}
.auth-error.is-error {
  color: var(--auth-danger);
}

/* ---- 提交按钮(青绿色全宽) ---- */
.auth-submit {
  margin-top: 4px;
  width: 100%;
  height: 44px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: #ffffff;
  background: var(--auth-primary);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.05s ease;
}
.auth-submit:hover:not(:disabled) {
  background: var(--auth-primary-hover);
}
.auth-submit:active:not(:disabled) {
  transform: translateY(1px);
}
.auth-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ---- 底部链接区 ---- */
.auth-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--auth-divider);
  font-size: 13px;
}
.auth-foot a {
  color: var(--auth-fg-subtle);
  text-decoration: none;
  transition: color 0.15s ease;
}
.auth-foot a:hover {
  color: var(--auth-primary);
}

/* 修改密码页面顶部说明文字 */
.auth-hint {
  margin: 0 0 18px;
  padding: 10px 14px;
  font-size: 13px;
  color: var(--auth-fg-subtle);
  background: var(--auth-primary-soft);
  border-radius: 8px;
  line-height: 1.5;
}

/* ---- 全局盒模型重置 (放在文件末尾,覆盖 :root 之外的所有默认样式) ---- */
*, *::before, *::after { box-sizing: border-box; }