:root {
  --bg-color: #0f0f13;
  --card-bg: #1a1a22;
  --accent-color: #eb2330;
  --accent-glow: rgba(255, 58, 94, 0.5);
  --text-primary: #ffffff;
  --text-secondary: #a0a0a8;
  --input-bg: #252530;
  --success-color: #36e278;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background-color: var(--bg-color);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  position: relative;
}

body::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 50%, transparent 0%, var(--bg-color) 70%);
  z-index: -1;
}

.background-glow {
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: var(--accent-color);
  filter: blur(120px);
  opacity: 0.15;
  z-index: -1;
  animation: float 8s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translate(-100px, -100px);
  }
  50% {
    transform: translate(100px, 100px);
  }
}

.login-container {
  width: 400px;
  padding: 40px;
  background-color: var(--card-bg);
  border-radius: 16px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
  position: relative;
  z-index: 1;
  overflow: hidden;
}

.login-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
  animation: border-flow 3s linear infinite;
}

@keyframes border-flow {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

.login-header {
  text-align: center;
  margin-bottom: 30px;
}

.login-header h1 {
  color: var(--text-primary);
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 8px;
}

.login-header p {
  color: var(--text-secondary);
  font-size: 14px;
}

.form-group {
  margin-bottom: 24px;
  position: relative;
}

.form-group label {
  display: block;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.3s ease;
}

.input-wrapper {
  position: relative;
}

.form-control {
  width: 100%;
  padding: 14px 16px;
  background-color: var(--input-bg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 15px;
  transition: all 0.3s ease;
  outline: none;
}

.form-control:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-control:focus + .input-icon {
  color: var(--accent-color);
}

.input-icon {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  transition: all 0.3s ease;
}

.password-toggle {
  cursor: pointer;
}

.remember-forgot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.remember-me {
  display: flex;
  align-items: center;
}

.custom-checkbox {
  position: relative;
  display: inline-block;
  width: 18px;
  height: 18px;
  margin-right: 8px;
}

.custom-checkbox input {
  opacity: 0;
  width: 0;
  height: 0;
}

.checkmark {
  position: absolute;
  top: 0;
  left: 0;
  width: 18px;
  height: 18px;
  background-color: var(--input-bg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  transition: all 0.2s ease;
}

.custom-checkbox input:checked ~ .checkmark {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
}

.checkmark:after {
  content: "";
  position: absolute;
  display: none;
  left: 6px;
  top: 2px;
  width: 4px;
  height: 9px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

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

.remember-me label {
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
}

.forgot-password {
  color: var(--text-secondary);
  font-size: 14px;
  text-decoration: none;
  transition: all 0.3s ease;
}

.forgot-password:hover {
  color: var(--accent-color);
}

.login-btn {
  width: 100%;
  padding: 14px;
  background-color: var(--accent-color);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.login-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: all 0.6s ease;
}

.login-btn:hover::before {
  left: 100%;
}

.login-btn:hover {
  background-color: #ff1a43;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(255, 58, 94, 0.4);
}

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

.login-btn.loading {
  background-color: #ff1a43;
  pointer-events: none;
}

.login-btn.loading .btn-text {
  visibility: hidden;
}

.login-btn.loading::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  top: 50%;
  left: 50%;
  margin-left: -10px;
  margin-top: -10px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  animation: spin 0.8s linear infinite;
}

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

.login-btn.success {
  background-color: var(--success-color);
  pointer-events: none;
}

.signup-link {
  margin-top: 24px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
}

.signup-link a {
  color: var(--accent-color);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
}

.signup-link a:hover {
  text-decoration: underline;
}

@media (max-width: 480px) {
  .login-container {
    width: 90%;
    padding: 30px 20px;
  }
}