/* 登录动画改编自 https://github.com/huangj17/login-animated-characters （MIT） */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: "Segoe UI", "PingFang SC", -apple-system, BlinkMacSystemFont, sans-serif;
  background: #1a1a2e;
  overflow: hidden;
  height: 100vh;
}

#login-page {
  display: grid;
  grid-template-columns: 1fr 1fr;
  height: 100vh;
}

.left-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: linear-gradient(135deg, #d4d0dc 0%, #c8c4d0 50%, #bbb7c5 100%);
  padding: 40px 48px;
  overflow: hidden;
}

.left-panel .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  z-index: 10;
  position: relative;
}

.left-panel .logo svg {
  width: 28px;
  height: 28px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  padding: 4px;
  border-radius: 6px;
}

.characters-wrapper {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  height: 420px;
}

.footer-note {
  z-index: 10;
  position: relative;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(80, 70, 90, 0.75);
}

.left-panel::after {
  content: '';
  position: absolute;
  top: 20%;
  right: 15%;
  width: 260px;
  height: 260px;
  background: rgba(180, 170, 200, 0.25);
  border-radius: 50%;
  filter: blur(80px);
}

.left-panel::before {
  content: '';
  position: absolute;
  bottom: 15%;
  left: 10%;
  width: 350px;
  height: 350px;
  background: rgba(200, 195, 210, 0.2);
  border-radius: 50%;
  filter: blur(100px);
}

.right-panel {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  padding: 40px;
}

.form-container {
  width: 100%;
  max-width: 400px;
}

.sparkle-icon {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
}

.sparkle-icon svg { width: 32px; height: 32px; }

.form-header {
  text-align: center;
  margin-bottom: 36px;
}

.form-header h1 {
  font-size: 28px;
  font-weight: 700;
  color: #1a1a2e;
  letter-spacing: -0.5px;
  margin-bottom: 6px;
}

.form-header p {
  font-size: 14px;
  color: #888;
}

.form-group { margin-bottom: 20px; }

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: #333;
  margin-bottom: 8px;
}

.form-group .input-wrapper { position: relative; }

.form-group input {
  width: 100%;
  height: 48px;
  border: none;
  border-bottom: 1.5px solid #e0e0e0;
  padding: 0 40px 0 0;
  font-size: 15px;
  font-family: inherit;
  color: #1a1a2e;
  background: transparent;
  outline: none;
  transition: border-color 0.3s;
}

.form-group input:focus { border-bottom-color: #5b21b6; }
.form-group input::placeholder { color: #ccc; }

.toggle-password {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: #666;
  padding: 6px;
}

.toggle-password:hover { color: #333; }
.is-hidden { display: none; }

.btn-login {
  position: relative;
  width: 100%;
  height: 50px;
  border-radius: 25px;
  border: 1.5px solid #1a1a2e;
  background: #1a1a2e;
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  overflow: hidden;
  margin-top: 8px;
  transition: all 0.3s;
}

.btn-login .btn-text {
  display: inline-block;
  transition: all 0.3s;
}

.btn-login .btn-hover-content {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #5b21b6;
  color: #fff;
  opacity: 0;
  transition: all 0.3s;
  border-radius: 25px;
}

.btn-login:hover .btn-text {
  transform: translateX(40px);
  opacity: 0;
}

.btn-login:hover .btn-hover-content { opacity: 1; }
.btn-login:disabled { opacity: 0.7; cursor: wait; }

.characters-scene {
  position: relative;
  width: 480px;
  height: 360px;
}

.character {
  position: absolute;
  bottom: 0;
  transition: all 0.7s ease-in-out;
  transform-origin: bottom center;
}

.char-purple {
  left: 60px;
  width: 170px;
  height: 370px;
  background: #6c3ff5;
  border-radius: 10px 10px 0 0;
  z-index: 1;
}

.char-black {
  left: 220px;
  width: 115px;
  height: 290px;
  background: #2d2d2d;
  border-radius: 8px 8px 0 0;
  z-index: 2;
}

.char-orange {
  left: 0;
  width: 230px;
  height: 190px;
  background: #ff9b6b;
  border-radius: 115px 115px 0 0;
  z-index: 3;
}

.char-yellow {
  left: 290px;
  width: 135px;
  height: 215px;
  background: #e8d754;
  border-radius: 68px 68px 0 0;
  z-index: 4;
}

.eyes {
  position: absolute;
  display: flex;
  transition: all 0.7s ease-in-out;
}

.eyeball {
  border-radius: 50%;
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: height 0.15s ease;
  overflow: hidden;
}

.pupil {
  border-radius: 50%;
  background: #2d2d2d;
  transition: transform 0.1s ease-out;
}

.bare-pupil {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #2d2d2d;
  transition: transform 0.7s ease-in-out;
}

.yellow-mouth {
  position: absolute;
  width: 50px;
  height: 4px;
  background: #2d2d2d;
  border-radius: 2px;
  transition: all 0.7s ease-in-out;
}

#purple-eyes { left: 45px; top: 40px; gap: 28px; }
#purple-eye-l, #purple-eye-r { width: 18px; height: 18px; }
#purple-pupil-l, #purple-pupil-r { width: 7px; height: 7px; }
#black-eyes { left: 26px; top: 32px; gap: 20px; }
#black-eye-l, #black-eye-r { width: 16px; height: 16px; }
#black-pupil-l, #black-pupil-r { width: 6px; height: 6px; }
#orange-eyes { left: 82px; top: 90px; gap: 28px; }
#orange-mouth { left: 90px; top: 120px; }
#yellow-eyes { left: 52px; top: 40px; gap: 20px; }
#yellow-mouth { left: 40px; top: 88px; }

@keyframes shakeHead {
  0%, 100% { translate: 0 0; }
  10% { translate: -9px 0; }
  20% { translate: 7px 0; }
  30% { translate: -6px 0; }
  40% { translate: 5px 0; }
  50% { translate: -4px 0; }
  60% { translate: 3px 0; }
  70% { translate: -2px 0; }
  80% { translate: 1px 0; }
  90% { translate: -0.5px 0; }
}

.eyes.shake-head, .yellow-mouth.shake-head, .orange-mouth.shake-head {
  animation: shakeHead 0.8s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
}

.orange-mouth {
  position: absolute;
  width: 28px;
  height: 14px;
  border: 3px solid #2d2d2d;
  border-top: none;
  border-radius: 0 0 14px 14px;
  opacity: 0;
  transition: all 0.7s ease-in-out;
}

.orange-mouth.visible { opacity: 1; }

.error-msg {
  display: none;
  padding: 10px 14px;
  font-size: 13px;
  color: #dc2626;
  background: rgba(220, 38, 38, 0.08);
  border: 1px solid rgba(220, 38, 38, 0.2);
  border-radius: 10px;
  margin-bottom: 16px;
}

.form-group input.error { border-bottom-color: #dc2626; }
.form-group label.error-label { color: #dc2626; }

@media (max-width: 900px) {
  body { overflow: auto; height: auto; min-height: 100vh; }
  #login-page { grid-template-columns: 1fr; height: auto; min-height: 100vh; }
  .left-panel { display: none; }
  .right-panel { min-height: 100vh; }
}