/**
 * 学员登录页样式
 */
* { margin: 0; padding: 0; box-sizing: border-box; }

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0a1f44 0%, #132d5e 35%, #1a3a6e 70%, #0d2548 100%);
  overflow: hidden;
  position: relative;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}

.login-bg-shapes {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.login-shape {
  position: absolute;
  border-radius: 50%;
}

.login-shape-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(244,121,32,0.12) 0%, transparent 70%);
  top: -15%; right: -10%;
  animation: shapeFloat1 12s ease-in-out infinite;
}

.login-shape-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(79,195,247,0.1) 0%, transparent 70%);
  bottom: -10%; left: -8%;
  animation: shapeFloat2 10s ease-in-out infinite;
}

.login-shape-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(26,95,220,0.08) 0%, transparent 70%);
  top: 40%; left: 50%;
  animation: shapeFloat3 14s ease-in-out infinite;
}

@keyframes shapeFloat1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-40px, -30px) scale(1.1); }
}

@keyframes shapeFloat2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -20px) scale(1.15); }
}

@keyframes shapeFloat3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-20px, 25px) scale(1.08); }
}

.login-card {
  position: relative;
  z-index: 1;
  width: 400px;
  max-width: calc(100vw - 32px);
  background: rgba(255,255,255,0.97);
  border-radius: 20px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.25);
  overflow: hidden;
  backdrop-filter: blur(10px);
  animation: cardIn 0.6s ease-out;
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.login-header {
  padding: 28px 32px 0;
  text-align: center;
}

.login-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.login-logo .logo-icon { flex-shrink: 0; }

.login-logo .logo-text { display: flex; flex-direction: column; align-items: flex-start; }

.login-logo .logo-cn {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: 0.04em;
}

.login-logo .logo-en {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--color-text-light);
  letter-spacing: 0.06em;
}

.login-body {
  padding: 28px 32px 32px;
}

.login-icon-wrapper {
  text-align: center;
  margin-bottom: 12px;
}

.login-icon {
  font-size: 3rem;
  animation: floatIcon 3s ease-in-out infinite;
  display: inline-block;
}

@keyframes floatIcon {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.login-title {
  text-align: center;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.login-subtitle {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 28px;
}

.login-form .form-group {
  margin-bottom: 18px;
}

.login-form .form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.input-wrapper {
  position: relative;
}

.input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-light);
  pointer-events: none;
}

.input-wrapper input {
  width: 100%;
  padding: 12px 14px 12px 42px;
  font-size: 0.92rem;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: 10px;
  outline: none;
  transition: all var(--transition);
}

.input-wrapper input:focus {
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px rgba(26,95,220,0.1);
}

.input-wrapper input::placeholder {
  color: #b0b8c4;
}

.login-error {
  padding: 10px 14px;
  background: rgba(231,76,60,0.06);
  border: 1px solid rgba(231,76,60,0.2);
  border-radius: 8px;
  color: #e74c3c;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 16px;
  text-align: center;
}

.btn-login {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  font-size: 0.95rem;
  font-weight: 700;
  font-family: inherit;
  color: var(--color-white);
  background: linear-gradient(135deg, #1a5fdc 0%, #2b6ef0 100%);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 4px 16px rgba(26,95,220,0.3);
}

.btn-login:hover {
  background: linear-gradient(135deg, #1450c0 0%, #1a5fdc 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(26,95,220,0.4);
}

.btn-login:active {
  transform: translateY(0);
}

.btn-login:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.login-footer {
  padding: 16px 32px;
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.login-footer span {
  font-size: 0.78rem;
  color: var(--color-text-light);
}

@media (max-width: 480px) {
  .login-body { padding: 20px 20px 24px; }
  .login-header { padding: 24px 20px 0; }
  .login-footer { padding: 12px 20px; }
}