@import url('https://fonts.googleapis.com/css2?family=Gentium+Book+Basic:ital,wght@0,400;0,700;1,400;1,700&family=Gabarito:wght@400;500;600;700&family=Noto+Sans+SC:wght@400;500;600;700&display=swap');

/* ── Reset ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

button, a {
  background: none;
  border: none;
  cursor: pointer;
  font: inherit;
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: none;
}

input {
  border: none;
  outline: none;
  background: transparent;
  font: inherit;
}

/*
 * 缩放体系
 * --scale  = 容器宽度 / 1920（JS 设置）
 * --ui-ratio = 整体界面微调比例（统一作用于所有元素）
 * --s      = 最终换算系数，所有设计稿像素均写作 calc(Npx * var(--s))
 */
.viewport {
  /* 首帧即用视口宽度估算，避免 JS 加载前 scale=1 导致左上角放大闪动 */
  --scale: calc(100vw / 1920);
  --ui-ratio: 0.92;
  --layout-offset-x: 100;
  --s: calc(var(--scale) * var(--ui-ratio));
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #1f1f1f;
  position: relative;
}

.slide {
  position: relative;
  width: calc(1920px * var(--s));
  height: calc(1080px * var(--s));
  margin-left: calc(var(--layout-offset-x) * 1px * var(--s));
  background: transparent;
  overflow: visible;
  z-index: 1;
  /* 登录白卡片水平中心（608 + 1077.069 / 2） */
  --panel-center-x: calc(1146.535px * var(--s));
  --field-width: calc(551.107px * var(--s));
  --btn-width: calc(339.707px * var(--s));
  font-family: 'Gentium Book Basic', serif;
}

html[lang="zh-CN"] .slide {
  font-family: 'Noto Sans SC', sans-serif;
}

/* ── 宝相花纹：左侧贴边，viewport 垂直居中 ── */
.baoxiang {
  position: absolute;
  left: calc(-511px * var(--s));
  top: 50%;
  width: calc(1058px * var(--s));
  height: calc(1074px * var(--s));
  transform: translateY(-50%);
  pointer-events: none;
  z-index: 0;
}

.baoxiang img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ── 锈铁板装饰框 ── */
.rust-frame {
  position: absolute;
  left: calc(791px * var(--s));
  top: calc(163px * var(--s));
  width: calc(1001px * var(--s));
  height: calc(713px * var(--s));
}

.rust-frame__inner {
  position: absolute;
  inset: -1.71% -1.71% -3.08% -1.71%;
}

.rust-frame__inner svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* ── 登录卡片 ── */
.card-group {
  position: absolute;
  left: calc(608px * var(--s));
  top: calc(103px * var(--s));
}

.card-bg {
  position: absolute;
  left: 0;
  top: 0;
  width: calc(1077.069px * var(--s));
  height: calc(874px * var(--s));
  background: #fffbf2;
  border: calc(1.222px * var(--s)) solid #f6f4f1;
  box-shadow: calc(4.888px * var(--s)) calc(4.888px * var(--s)) calc(4.888px * var(--s)) #787272;
}

.paper-texture {
  position: absolute;
  left: calc(70px * var(--s));
  top: calc(160px * var(--s));
  width: calc(938px * var(--s));
  height: calc(649px * var(--s));
  mix-blend-mode: multiply;
  border: calc(1.222px * var(--s)) solid #f6f4f1;
  overflow: hidden;
  pointer-events: none;
}

.paper-texture__img {
  position: absolute;
  inset: 0;
  opacity: 0.5;
  overflow: hidden;
}

.paper-texture__img img {
  position: absolute;
  width: 110.57%;
  height: 130.82%;
  left: -7.63%;
  top: -20.56%;
}

/* ── 标题（相对面板中心居中） ── */
.title-welcome-wrap {
  position: absolute;
  left: var(--panel-center-x);
  top: calc(162px * var(--s));
  transform: translateX(-50%);
  text-align: center;
}

html[lang="zh-CN"] .title-welcome-wrap {
  top: calc(138px * var(--s));
}

.title-welcome {
  font-family: 'Gentium Book Basic', serif;
  font-weight: 700;
  font-size: calc(78.206px * var(--s));
  letter-spacing: calc(7.8206px * var(--s));
  color: #778366;
  white-space: nowrap;
  animation: welcomeFloat 4.5s ease-in-out infinite;
}

html[lang="zh-CN"] .title-welcome {
  letter-spacing: calc(4px * var(--s));
}

.title-login {
  position: absolute;
  left: var(--panel-center-x);
  top: calc(333px * var(--s));
  transform: translateX(-50%);
  font-weight: 600;
  font-size: calc(43.991px * var(--s));
  color: rgba(170, 135, 135, 0.8);
  white-space: nowrap;
  text-align: center;
}

html[lang="en"] .title-login {
  font-family: 'Gabarito', sans-serif;
}

/* ── 关闭按钮 ── */
.btn-close {
  position: absolute;
  left: calc(1616px * var(--s));
  top: calc(103px * var(--s));
  font-family: 'Gentium Book Basic', serif;
  font-weight: 400;
  font-size: calc(86px * var(--s));
  line-height: 1;
  color: #9ba48f;
  padding: 0;
  transition: color 0.2s ease, transform 0.2s ease;
}

.btn-close:hover {
  color: #778366;
}

.btn-close:active {
  transform: scale(0.92);
}

/* ── 输入字段（字段块居中，提示词与输入左对齐） ── */
.field {
  position: absolute;
  left: calc(var(--panel-center-x) - var(--field-width) / 2);
  width: var(--field-width);
}

.field--username {
  top: calc(453.1px * var(--s));
}

.field--password {
  top: calc(516.55px * var(--s));
}

.field__line {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: calc(2.44393px * var(--s));
}

.field__line svg {
  width: 100%;
  height: 100%;
  display: block;
}

.field__hint {
  position: absolute;
  left: 0;
  top: calc(-4px * var(--s));
  transform: translateY(-100%);
  font-weight: 400;
  font-size: calc(24.439px * var(--s));
  color: #bbc4a9;
  white-space: nowrap;
  pointer-events: none;
  z-index: 1;
  transition: opacity 0.15s ease, visibility 0.15s ease;
}

.field:focus-within .field__hint,
.field.has-value .field__hint {
  opacity: 0;
  visibility: hidden;
}

.field--username .field__input {
  position: absolute;
  left: 0;
  top: calc(-32px * var(--s));
  width: 100%;
  height: calc(32px * var(--s));
  font-size: calc(24.439px * var(--s));
  color: #778366;
  -webkit-text-fill-color: #778366;
  caret-color: #778366;
  padding: 0 calc(4px * var(--s));
  z-index: 2;
}

.field__inputRow {
  position: absolute;
  left: 0;
  top: calc(-32px * var(--s));
  width: 100%;
  height: calc(32px * var(--s));
  display: flex;
  align-items: center;
  gap: calc(8px * var(--s));
  z-index: 2;
}

.field__inputRow .field__input {
  position: static;
  flex: 1;
  min-width: 0;
  width: auto;
  height: 100%;
  border: none;
  outline: none;
  background: transparent;
  font-size: calc(24.439px * var(--s));
  color: #778366;
  -webkit-text-fill-color: #778366;
  caret-color: #778366;
  padding: 0 calc(4px * var(--s));
}

.field__toggle {
  flex-shrink: 0;
  border: none;
  background: transparent;
  padding: 0;
  margin: 0;
  cursor: pointer;
  color: #778366;
  width: calc(22px * var(--s));
  height: calc(22px * var(--s));
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.field__toggle:focus-visible {
  outline: calc(2px * var(--s)) solid rgba(119, 131, 102, 0.45);
  outline-offset: calc(2px * var(--s));
  border-radius: calc(4px * var(--s));
}

.field__toggleIcon {
  width: 100%;
  height: 100%;
  display: block;
}

.field__toggle:not(.is-visible) .field__toggleIcon--show {
  display: none;
}

.field__toggle:not(.is-visible) .field__toggleIcon--hide {
  display: block;
}

.field__toggle.is-visible .field__toggleIcon--hide {
  display: none;
}

.field__toggle.is-visible .field__toggleIcon--show {
  display: block;
}

/* 隐藏浏览器自带的密码可见 / 清除按钮（避免与自定义眼睛重复） */
.field__input[type="password"]::-ms-reveal,
.field__input[type="password"]::-ms-clear {
  display: none;
}

.field__input::-webkit-credentials-auto-fill-button {
  visibility: hidden;
  pointer-events: none;
  position: absolute;
  right: 0;
  width: 0;
  height: 0;
  margin: 0;
}

@keyframes login-field-autofill-start {
  from {
    opacity: 1;
  }
  to {
    opacity: 1;
  }
}

.field__input:-webkit-autofill,
.field__input:-webkit-autofill:hover,
.field__input:-webkit-autofill:focus {
  -webkit-text-fill-color: #778366 !important;
  caret-color: #778366;
  transition: background-color 9999s ease-out;
  -webkit-box-shadow: 0 0 0 1000px transparent inset !important;
  box-shadow: 0 0 0 1000px transparent inset !important;
  background-color: transparent !important;
  animation-name: login-field-autofill-start;
  animation-duration: 0.01s;
}

html[lang="zh-CN"] .field__input:-webkit-autofill,
html[lang="zh-CN"] .field__input:-webkit-autofill:hover,
html[lang="zh-CN"] .field__input:-webkit-autofill:focus {
  -webkit-text-fill-color: #778366 !important;
}

/* ── Remember Me ── */
.remember-me {
  position: absolute;
  left: var(--panel-center-x);
  top: calc(563px * var(--s));
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: calc(15px * var(--s));
}

.remember-me__checkbox {
  position: relative;
  width: calc(20px * var(--s));
  height: calc(19px * var(--s));
  flex-shrink: 0;
  padding: 0;
}

.remember-me__circle {
  width: 100%;
  height: 100%;
  display: block;
}

.remember-me__circle-path {
  transition: fill 0.25s ease;
}

.remember-me__checkbox[aria-pressed="true"] .remember-me__circle-path {
  fill: #9BA48F;
}

.remember-me__check-mark {
  opacity: 0;
  stroke-dasharray: 20;
  stroke-dashoffset: 20;
}

.remember-me__checkbox[aria-pressed="true"] .remember-me__check-mark {
  opacity: 1;
  animation: checkDraw 0.28s ease-out forwards, checkPop 0.3s ease-out forwards;
}

.remember-me__checkbox.is-pulsing {
  animation: circlePulse 0.35s ease-out;
}

.remember-me__label {
  font-weight: 700;
  font-size: calc(24.439px * var(--s));
  color: #9ba48f;
  white-space: nowrap;
  user-select: none;
}

/* ── 链接（外层居中，内层保留点击动画） ── */
.link-wrap {
  position: absolute;
  left: var(--panel-center-x);
  transform: translateX(-50%);
  text-align: center;
}

.link-wrap--forget {
  top: calc(607px * var(--s));
}

html[lang="zh-CN"] .link-wrap--forget {
  top: calc(618px * var(--s));
}

.link-wrap--create {
  top: calc(839px * var(--s));
}

.link {
  position: relative;
  font-weight: 700;
  font-size: calc(24.439px * var(--s));
  color: #9ba48f;
  text-decoration: underline;
  white-space: nowrap;
  display: inline-block;
  transform-origin: center;
  transition: color 0.2s ease;
}

.link.is-active {
  color: #778366;
  animation: linkPress 0.5s ease-out forwards;
}

/* ── 登录按钮 ── */
.btn-login-wrap {
  position: absolute;
  left: var(--panel-center-x);
  top: calc(708px * var(--s));
  transform: translateX(-50%);
}

.btn-login {
  position: relative;
  width: var(--btn-width);
  height: calc(97.757px * var(--s));
  border-radius: calc(69.652px * var(--s));
  overflow: hidden;
  transition: transform 0.15s cubic-bezier(0.34, 1.56, 0.64, 1),
              filter 0.15s ease;
}

.btn-login__bg {
  position: absolute;
  inset: 0;
  border-radius: calc(69.652px * var(--s));
  background: rgba(170, 135, 135, 0.8);
  transition: background-color 0.15s ease;
}

.btn-login__shadow {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset calc(-4.888px * var(--s)) calc(-4.888px * var(--s)) calc(4.888px * var(--s)) rgba(0, 0, 0, 0.25);
  pointer-events: none;
}

.btn-login__ripple {
  position: absolute;
  inset: 0;
  border-radius: calc(69.652px * var(--s));
  background: radial-gradient(circle at center, rgba(255, 255, 255, 0.18) 0%, transparent 70%);
  opacity: 0;
  pointer-events: none;
}

.btn-login__text {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-weight: 700;
  font-size: calc(48.879px * var(--s));
  letter-spacing: calc(1px * var(--s));
  color: #fff;
  white-space: nowrap;
  pointer-events: none;
}

.btn-login.is-pressed {
  transform: scale(0.94);
  filter: brightness(0.82);
}

.btn-login.is-pressed .btn-login__bg {
  background: rgba(140, 110, 110, 0.9);
}

.btn-login.is-pressed .btn-login__ripple {
  opacity: 1;
  animation: rippleIn 0.3s ease-out forwards;
}

/* ── 闪光效果（覆盖整个 viewport） ── */
.flash-overlay {
  position: absolute;
  inset: 0;
  background: #fff;
  opacity: 0;
  pointer-events: none;
  z-index: 100;
}

.flash-overlay.is-active {
  animation: flashFade 0.5s ease-out forwards;
}

/* ── 动画 ── */
@keyframes rippleIn {
  from { opacity: 0; transform: scale(0.6); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes flashFade {
  0%   { opacity: 0.45; }
  100% { opacity: 0; }
}

@keyframes welcomeFloat {
  0%   { transform: translateY(0);    opacity: 0.82; text-shadow: 0 0 0 rgba(119, 131, 102, 0); }
  30%  { opacity: 1; }
  50%  { transform: translateY(calc(-8px * var(--s))); opacity: 1; text-shadow: 0 0 calc(22px * var(--s)) rgba(155, 164, 143, 0.45), 0 0 calc(6px * var(--s)) rgba(119, 131, 102, 0.25); }
  70%  { opacity: 1; }
  100% { transform: translateY(0);    opacity: 0.82; text-shadow: 0 0 0 rgba(119, 131, 102, 0); }
}

@keyframes checkPop {
  0%   { transform: scale(0) rotate(-20deg); opacity: 0; }
  60%  { transform: scale(1.3) rotate(5deg);  opacity: 1; }
  100% { transform: scale(1) rotate(0deg);   opacity: 1; }
}

@keyframes checkDraw {
  from { stroke-dashoffset: 20; }
  to   { stroke-dashoffset: 0; }
}

@keyframes circlePulse {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.18); }
  100% { transform: scale(1); }
}

@keyframes linkPress {
  0%   { transform: scale(1);    opacity: 1; }
  35%  { transform: scale(0.92); opacity: 0.6; }
  70%  { transform: scale(1.06); opacity: 1; }
  100% { transform: scale(1);    opacity: 1; }
}

@media (max-width: 640px) {
  html,
  body {
    height: 100%;
    min-height: 100%;
    overflow: hidden;
    background: #1f1f1f;
  }

  .viewport {
    --scale: 1 !important;
    --ui-ratio: 1;
    --s: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 100svh;
    padding: 24px 18px;
    background:
      radial-gradient(circle at -12% 72%, rgba(187, 196, 169, 0.2), transparent 34%),
      #1f1f1f;
  }

  .slide {
    width: min(calc(100vw - 92px), 340px);
    height: min(720px, calc(100svh - 48px));
    min-height: 620px;
    margin: 0;
    --panel-center-x: 50%;
    --field-width: min(62vw, 258px);
    --btn-width: min(56vw, 220px);
  }

  .baoxiang {
    left: -148px;
    top: 72%;
    width: 330px;
    height: 335px;
    opacity: 0.56;
    transform: translateY(-50%) rotate(-8deg);
  }

  .rust-frame {
    display: none;
  }

  .card-group {
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
  }

  .card-bg {
    width: 100%;
    height: 100%;
    border: 1px solid rgba(246, 244, 241, 0.82);
    border-radius: 0;
    box-shadow: 0 18px 42px rgba(0, 0, 0, 0.3);
  }

  .paper-texture {
    left: 16px;
    top: 88px;
    width: calc(100% - 32px);
    height: calc(100% - 154px);
    border-color: rgba(246, 244, 241, 0.72);
  }

  .title-welcome-wrap {
    top: 34px;
  }

  html[lang="zh-CN"] .title-welcome-wrap {
    top: 31px;
  }

  .title-welcome {
    font-size: clamp(31px, 8.8vw, 40px);
    letter-spacing: 0.1em;
  }

  html[lang="zh-CN"] .title-welcome {
    letter-spacing: 0.08em;
  }

  .title-login {
    top: 148px;
    font-size: 22px;
  }

  .btn-close {
    display: none;
  }

  .field--username {
    top: 242px;
  }

  .field--password {
    top: 320px;
  }

  .field__line {
    height: 2px;
  }

  .field__hint {
    top: -10px;
    font-size: 15px;
  }

  .field--username .field__input,
  .field__inputRow {
    top: -38px;
    height: 38px;
  }

  .field--username .field__input,
  .field__inputRow .field__input {
    font-size: 17px;
    padding: 0 4px;
  }

  .field__toggle {
    width: 34px;
    height: 34px;
    padding: 6px;
  }

  .remember-me {
    top: 376px;
    gap: 10px;
  }

  .remember-me__checkbox {
    width: 26px;
    height: 26px;
  }

  .remember-me__label,
  .link,
  .btn-login__text {
    font-size: 16px;
  }

  .link-wrap--forget {
    top: 422px;
  }

  html[lang="zh-CN"] .link-wrap--forget {
    top: 422px;
  }

  .btn-login-wrap {
    top: 492px;
  }

  .btn-login {
    height: 58px;
    border-radius: 999px;
  }

  .btn-login__bg,
  .btn-login__ripple {
    border-radius: inherit;
  }

  .btn-login__text {
    letter-spacing: 0.08em;
  }

  .link-wrap--create {
    top: auto;
    bottom: 34px;
  }
}