:root {
  --primary: #10b981;
  --primary-hover: #059669;
  --bg-dark: #121212;
  --card-bg: #1a1a1a;
  --input-bg: #2a2a2a;
  --input-border: #3a3a3a;
  --text-main: #ffffff;
  --text-dim: #9ca3af;
  --accent: #4f6ef7;
  --error: #ef4444;
}

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

body {
  font-family: 'Inter', sans-serif;
  background: transparent !important;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  color: var(--text-main);
}

.auth-wrapper {
  width: 100%;
  max-width: 450px;
}

.auth-card {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 45px 40px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.auth-header {
  text-align: center;
  margin-bottom: 35px;
}

.auth-title {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: 1px;
  margin-bottom: 12px;
  background: linear-gradient(to right, #fff, #9ca3af);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.auth-subtitle {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.6;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: #fff;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

.input-icon {
  position: absolute;
  left: 15px;
  color: var(--text-dim);
  font-size: 16px;
  pointer-events: none;
}

.form-input {
  width: 100%;
  padding: 14px 15px 14px 45px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 10px;
  color: #fff;
  font-size: 15px;
  transition: all 0.3s ease;
}

.form-input:focus {
  border-color: var(--primary);
  background: #242424;
  outline: none;
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.1);
}

.error-text {
  color: var(--error);
  font-size: 12px;
  margin-top: 8px;
  font-weight: 500;
  min-height: 18px;
}

.btn-primary-auth {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 15px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.btn-primary-auth:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px -5px rgba(16, 185, 129, 0.4);
}

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

.back-link {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.back-link:hover {
  color: #fff;
}

.back-link i {
  font-size: 12px;
}

/* Mobile Responsiveness */
@media (max-width: 480px) {
  .auth-card {
    padding: 35px 25px;
  }
  
  .auth-title {
    font-size: 22px;
  }
}