@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.login-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 440px;
  padding: 20px;
}

.login-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  padding: 48px 40px;
  box-shadow:
    0 25px 50px -12px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  animation: cardFloat 0.6s ease-out;
}

@keyframes cardFloat {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.logo-section {
  text-align: center;
  margin-bottom: 36px;
}

.logo-icon {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: white;
  box-shadow: 0 8px 32px rgba(102, 126, 234, 0.4);
  animation: pulseGlow 3s ease-in-out infinite;
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 8px 32px rgba(102, 126, 234, 0.4); }
  50% { box-shadow: 0 8px 48px rgba(102, 126, 234, 0.6); }
}

.logo-section h1 {
  color: #fff;
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.logo-section p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  font-weight: 400;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.input-group {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: 16px;
  color: rgba(255, 255, 255, 0.4);
  display: flex;
  align-items: center;
  pointer-events: none;
  transition: color 0.3s;
}

.input-group:focus-within .input-icon {
  color: #667eea;
}

.input-group input {
  width: 100%;
  padding: 14px 16px 14px 48px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  color: #fff;
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: all 0.3s;
}

.input-group input:focus {
  border-color: #667eea;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

.input-group input::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.input-group input:-webkit-autofill,
.input-group input:-webkit-autofill:hover,
.input-group input:-webkit-autofill:focus {
  -webkit-text-fill-color: #fff;
  -webkit-box-shadow: 0 0 0 30px #1a1a3e inset;
  transition: background-color 5000s ease-in-out 0s;
}

.toggle-password {
  position: absolute;
  right: 12px;
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  transition: color 0.3s;
}

.toggle-password:hover {
  color: rgba(255, 255, 255, 0.7);
}

.form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 4px 0;
}

.checkbox-container {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
  cursor: pointer;
  position: relative;
  padding-left: 28px;
  user-select: none;
}

.checkbox-container input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.checkmark {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 18px;
  width: 18px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  transition: all 0.3s;
}

.checkbox-container:hover .checkmark {
  border-color: rgba(255, 255, 255, 0.3);
}

.checkbox-container input:checked ~ .checkmark {
  background: linear-gradient(135deg, #667eea, #764ba2);
  border-color: transparent;
}

.checkmark:after {
  content: "";
  position: absolute;
  display: none;
  left: 5px;
  top: 2px;
  width: 5px;
  height: 9px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.checkbox-container input:checked ~ .checkmark:after {
  display: block;
}

.forgot-link {
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  font-size: 13px;
  transition: color 0.3s;
}

.forgot-link:hover {
  color: #667eea;
}

.login-btn {
  position: relative;
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  border: none;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.3s;
  margin-top: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.login-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

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

.login-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.spinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.login-btn.loading .btn-text { visibility: hidden; }
.login-btn.loading .spinner { display: block; position: absolute; }

.error-message {
  color: #ff6b6b;
  font-size: 13px;
  text-align: center;
  min-height: 20px;
  margin-top: -8px;
  opacity: 0;
  transition: opacity 0.3s;
}

.error-message.visible {
  opacity: 1;
}

@media (max-width: 480px) {
  body { overflow: auto; padding: 10px; }
  .login-container { padding: 10px; }
  .login-card { padding: 32px 24px; border-radius: 16px; }
  .logo-section h1 { font-size: 20px; }
  .logo-section { margin-bottom: 28px; }
  .logo-icon { width: 56px; height: 56px; border-radius: 16px; margin-bottom: 16px; }
  .input-group input { padding: 12px 14px 12px 42px; font-size: 14px; }
  .login-btn { padding: 12px; font-size: 15px; }
}