:root {
  --primary-color: #6c63ff; /* Premium Purple */
  --secondary-color: #2f2e41; /* Deep Dark */
  --accent-color: #00d2d3; /* Vibrant Cyan */
  --success-color: #2ecc71;
  --danger-color: #e74c3c;
  --warning-color: #f1c40f;
  --light-color: #f4f4f4;
  --dark-color: #333;
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --font-main: "Outfit", sans-serif;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

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

body {
  font-family: var(--font-main);
  background: #0f0c29; /* fallback for old browsers */
  background: -webkit-linear-gradient(
    to right,
    #24243e,
    #302b63,
    #0f0c29
  ); /* Chrome 10-25, Safari 5.1-6 */
  background: linear-gradient(
    to right,
    #24243e,
    #302b63,
    #0f0c29
  ); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
  color: #fff;
  line-height: 1.6;
  min-height: 100vh;
}

a {
  text-decoration: none;
  color: var(--accent-color);
  transition: var(--transition);
}

a:hover {
  color: #fff;
}

ul {
  list-style: none;
}

/* Container */
.container {
  max-width: 1200px;
  margin: auto;
  padding: 0 20px;
  overflow: hidden;
}

/* Navbar */
.navbar {
  background: rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--glass-border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.nav-links {
  display: flex;
}

.nav-links li {
  margin-left: 20px;
}

.nav-links a {
  color: #fff;
  font-weight: 600;
}

.nav-links a:hover {
  color: var(--primary-color);
}

/* Utilities */
.btn {
  display: inline-block;
  background: var(--primary-color);
  color: #fff;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1rem;
  transition: var(--transition);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(108, 99, 255, 0.4);
}

.btn-light {
  background: transparent;
  border: 1px solid var(--glass-border);
  color: #fff;
}

.btn-light:hover {
  background: rgba(255, 255, 255, 0.1);
}

.btn-success {
  background: var(--success-color);
}
.btn-danger {
  background: var(--danger-color);
}
.btn-block {
  display: block;
  width: 100%;
  margin-bottom: 10px;
  text-align: center;
}

/* Forms */
.form-group {
  margin-bottom: 1.5rem;
}

label {
  display: block;
  margin-bottom: 5px;
  font-weight: 600;
}

.form-control {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.05); /* slightly transparent inputs */
  color: #fff;
  border-radius: 5px;
  font-family: var(--font-main);
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  background: rgba(255, 255, 255, 0.1);
}

.is-invalid {
  border-color: var(--danger-color);
}

.invalid-feedback {
  color: var(--danger-color);
  display: block;
  font-size: 0.9rem;
  margin-top: 5px;
}

/* Cards (Glassmorphism) */
.card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: 15px;
  padding: 2rem;
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
}

.auth-card {
  max-width: 500px;
  margin: 3rem auto;
}

.card h2 {
  margin-bottom: 1rem;
  text-align: center;
  color: var(--primary-color);
}

.card p {
  text-align: center;
  margin-bottom: 2rem;
  color: #ccc;
}

/* Alerts */
.alert {
  padding: 10px;
  background: var(--glass-bg);
  border-left: 5px solid;
  margin-bottom: 1rem;
  border-radius: 5px;
}

.alert-success {
  border-color: var(--success-color);
  color: var(--success-color);
}
.alert-danger {
  border-color: var(--danger-color);
  color: var(--danger-color);
}

/* Grid (Simple) */
.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -10px;
}

.col-md-6 {
  flex: 0 0 50%;
  max-width: 50%;
  padding: 0 10px;
}

.col {
  flex: 1;
  padding: 0 10px;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}
.mt-5 {
  margin-top: 3rem;
}
.mt-3 {
  margin-top: 1rem;
}

@media (max-width: 768px) {
  .col-md-6 {
    flex: 0 0 100%;
    max-width: 100%;
  }
}