/* ── 登录/注册页 ──────────────────────────────────────────────── */
#page-auth {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.auth-wrap {
  width: 100%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.auth-header { text-align: center; }

.app-title {
  font-size: 26px;
  font-weight: 400;
  letter-spacing: 3px;
  margin-bottom: 6px;
  color: var(--text);
}

.app-sub {
  color: var(--muted);
  font-size: 13px;
  letter-spacing: .5px;
}

/* ── 卡片 ─────────────────────────────────────────────────────── */
.auth-card {
  background: rgba(255,255,255,0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: 20px;
  padding: 32px 28px;
  box-shadow: 0 4px 32px rgba(0,0,0,.07);
}

/* ── Tab 切换 ─────────────────────────────────────────────────── */
.tab-row {
  display: flex;
  background: rgba(0,0,0,.04);
  border-radius: 10px;
  padding: 3px;
  margin-bottom: 28px;
  gap: 2px;
}

.tab-btn {
  flex: 1;
  background: none;
  border: none;
  padding: 8px;
  font-family: var(--font);
  font-size: 13px;
  color: var(--muted);
  cursor: pointer;
  border-radius: 8px;
  transition: background .2s, color .2s;
}
.tab-btn.active {
  background: var(--surface);
  color: var(--accent);
  box-shadow: 0 1px 4px rgba(0,0,0,.08);
}

/* ── 表单 ─────────────────────────────────────────────────────── */
.auth-form { display: flex; flex-direction: column; gap: 16px; }

.auth-field { display: flex; flex-direction: column; gap: 6px; }

.auth-field label {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: .3px;
}

.auth-field-row {
  display: flex;
  gap: 8px;
}

input[type="text"],
input[type="password"],
input[type="email"],
textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  font-family: var(--font);
  font-size: 14px;
  background: rgba(255,255,255,0.6);
  color: var(--text);
  outline: none;
  transition: border-color .2s, background .2s;
  box-sizing: border-box;
}
input:focus, textarea:focus {
  border-color: var(--accent);
  background: #fff;
}

/* ── 获取验证码按钮 ────────────────────────────────────────────── */
.btn-send-code {
  flex-shrink: 0;
  padding: 0 16px;
  border: 1.5px solid var(--accent);
  border-radius: 10px;
  background: none;
  color: var(--accent);
  font-size: 12px;
  font-family: var(--font);
  cursor: pointer;
  white-space: nowrap;
  transition: background .2s, color .2s;
}
.btn-send-code:hover { background: var(--accent); color: #fff; }
.btn-send-code:disabled { border-color: var(--border); color: var(--muted); cursor: default; }

/* ── 六位验证码输入 ────────────────────────────────────────────── */
.code-inputs {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 6px;
}

.code-digit {
  width: 100% !important;
  padding: 10px 0 !important;
  text-align: center;
  font-size: 18px !important;
  font-weight: 500;
  border-radius: 10px !important;
  letter-spacing: 0 !important;
  box-sizing: border-box !important;
}

.auth-hint { font-size: 11px; color: var(--accent); margin-left: 6px; }

/* ── 提交按钮 ─────────────────────────────────────────────────── */
.auth-submit {
  width: 100%;
  margin-top: 4px;
  padding: 12px;
  font-size: 15px;
  border-radius: 12px;
}

/* ── 辅助文字 ─────────────────────────────────────────────────── */
.auth-link {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 12px;
  cursor: pointer;
  font-family: var(--font);
  text-align: center;
  text-decoration: underline;
  padding: 0;
}
.auth-link:hover { color: var(--accent); }

.auth-back-tip { font-size: 13px; color: var(--muted); line-height: 1.6; }
.auth-success  { color: #4a8a4a; font-size: 13px; }
.error-msg     { color: #c0392b; font-size: 13px; }