/* ============================================================
   APT Medical Admin Login — Design System 2026 · V3 居中卡片式
   Primary #1B75BB · Deep Navy #0A2440–#10456E · WCAG AA
   ============================================================ */
:root {
  --brand-primary: #1B75BB;
  --brand-primary-hover: #1663A0;
  --brand-deep-1: #0A2440;
  --brand-deep-2: #0D3055;
  --brand-deep-3: #10456E;
  --ink-900: #111827;
  --ink-600: #4B5563;
  --ink-400: #9CA3AF;
  --line-200: #E5E7EB;
  --error: #D7120B;
  --success: #086D0C;
  --radius-md: 8px;
  --radius-card: 18px;
  --shadow-focus: 0 0 0 3px rgba(27,117,187,.14);
  --shadow-btn-hover: 0 8px 20px rgba(27,117,187,.32);
  --shadow-card: 0 32px 80px rgba(4,20,38,.45);
  --transition: all .25s cubic-bezier(.4,0,.2,1);
}

* {margin: 0;padding: 0;box-sizing: border-box;}
body, button, input, select, textarea {font: 14px/1.5 -apple-system,"PingFang SC","Helvetica Neue","微软雅黑","\5FAE\8F6F\96C5\9ED1",Arial,sans-serif;}
body {background: #0A2440;-webkit-text-size-adjust: 100%;overflow: hidden;}
:-moz-placeholder {color: #9CA3AF;font-size: 14px;}
::-moz-placeholder {color: #9CA3AF;font-size: 14px;}
input:-ms-input-placeholder {color: #9CA3AF;font-size: 14px;}
input::-webkit-input-placeholder {color: #9CA3AF;font-size: 14px;}
*::before, *::after {box-sizing: border-box;}
ul, ol {list-style-type: none;}
ul, ol, li {list-style: none;}
h1, h2, h3, h4, h5, h6 {font-size: 100%;font-weight: normal;overflow: visible;line-height: 1.1em;}

/* ================= 全屏品牌背景 ================= */
.login {
  width: 100%;height: 100vh;position: relative;overflow: hidden;
  background:
    radial-gradient(1300px 850px at 15% 10%, rgba(38,99,155,.50) 0%, transparent 55%),
    radial-gradient(1100px 800px at 88% 90%, rgba(16,69,110,.85) 0%, transparent 55%),
    linear-gradient(135deg, var(--brand-deep-1) 0%, var(--brand-deep-2) 52%, var(--brand-deep-3) 100%);
}
.login::before {
  content: "";position: absolute;inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 52px 52px;
}
.login::after {
  content: "";position: absolute;width: 640px;height: 640px;border-radius: 50%;
  border: 1px solid rgba(255,255,255,.10);
  box-shadow: 0 0 0 100px rgba(255,255,255,.028);
  left: -180px;bottom: -220px;
}

/* 背景左上角白色 logo */
.login-bg-logo {
  position: absolute;top: 38px;left: 46px;width: 156px;height: auto;z-index: 2;
  opacity: .92;
}

/* ================= 居中登录卡片 ================= */
.login-item {
  position: absolute;left: 50%;top: 50%;transform: translate(-50%,-50%);
  width: 420px;background: #fff;border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 46px 46px 40px;z-index: 3;
}
.login-logo {width: 100%;text-align: center;}
.login-logo img {max-width: 72%;height: auto;}
.login-title {width: 100%;margin-top: 28px;text-align: center;}
.login-title h4 {font-size: 19px;font-weight: 600;color: var(--ink-900);letter-spacing: .14em;}

/* ================= 表单 ================= */
.login-form {width: 100%;margin-top: 4px;}
.login-form li {display: block;width: 100%;position: relative;margin-top: 2px;}
.login-form li:first-child {margin-top: 24px;}
.login-form-hint {display: block;width: 100%;font-size: 12px;color: var(--error);height: 18px;opacity: 0;transition: var(--transition);}
.login-form li input {
  width: 100%;height: 46px;font-size: 14px;color: var(--ink-900);
  background-color: #fff;background-repeat: no-repeat;background-position: left 13px center;
  border: 1px solid var(--line-200);border-radius: var(--radius-md);
  padding: 0 12px 0 38px;outline: none;transition: var(--transition);
}
.login-form li input:focus {border-color: var(--brand-primary);box-shadow: var(--shadow-focus);}
.login-form li input.error {border-color: var(--error);}
#username {background-image: url('../login/icon1.png');}
#username.error {background-image: url('../login/icon1H.png');}
#password {background-image: url('../login/icon2.png');padding-right: 56px;}
#password.error {background-image: url('../login/icon2H.png');}
#authcode {background-image: url('../login/icon2.png');padding-right: 112px;}
#authcode.error {background-image: url('../login/icon2H.png');}
.login-form-eye {position: absolute;font-style: normal;z-index: 2;right: 0;top: 0;width: 46px;height: 46px;cursor: pointer;background: url('./eye.png') no-repeat center/18px auto;}
.login-form-eye.show {background-image: url('../login/eyeH.png');}
.login-form-code {position: absolute;z-index: 2;right: 3px;top: 2px;height: 42px;width: 100px;display: flex;cursor: pointer;align-items: center;justify-content: center;border-radius: 6px;overflow: hidden;}
.login-form-code img, .login-form-code canvas {max-width: 100%;height: 100%;border-radius: 6px;}

.login-form-submit {
  width: 100%;height: 46px;font-size: 16px;font-weight: 500;
  letter-spacing: .3em;text-indent: .3em;
  color: #fff;border-radius: var(--radius-md);
  background: var(--brand-primary);margin-top: 26px;
  border: none;outline: none;cursor: pointer;transition: var(--transition);
}
.login-form-submit:hover {background: var(--brand-primary-hover);transform: translateY(-1px);box-shadow: var(--shadow-btn-hover);}
.login-form-submit:active {transform: translateY(0);box-shadow: none;}

.login-form-result {
  display: none;width: 100%;position: relative;padding: 10px 12px;
  background-color: #FDF0EF;border: 1px solid #F3C6C3;border-radius: var(--radius-md);
  margin-top: 14px;color: var(--error);font-size: 14px;
}
.login-form-result span {position: absolute;height: 24px;line-height: 24px;width: 24px;text-align: center;right: 4px;top: 50%;margin-top: -12px;z-index: 1;cursor: pointer;background: url('../login/close.png') no-repeat center/24px auto;}
.login-form-result.success {background-color: #EBF6E9;border: 1px solid #B9DCB8;color: var(--success);}

/* 背景底部版权 */
.login-copyright {
  position: absolute;bottom: 28px;left: 0;right: 0;text-align: center;
  font-size: 12px;color: rgba(255,255,255,.45);letter-spacing: .04em;z-index: 2;
}

/* ================= 响应式 ================= */
@media all and (max-height: 820px) {
  .login-item {padding: 38px 44px 32px;}
  .login-title {margin-top: 18px;}
  .login-form li:first-child {margin-top: 16px;}
  .login-form-submit {margin-top: 18px;}
}
@media all and (max-width: 520px) {
  .login-item {width: calc(100% - 32px);padding: 34px 24px 28px;}
  .login-bg-logo {width: 118px;left: 20px;top: 20px;}
  .login-copyright {bottom: 16px;}
}