/* Root Variables */
:root {
  --primary-color: #3b82f6;
  --secondary-color: #3b82f6;
  --background-color: #242424;
  --text-color: #ffffff;
  --accent-color: #38bdf8;
  --error-color: #ff4d4d;
  --input-background: #2a2f3a;
  --input-text-color: #e0e0e0;
  --error-background: rgba(255, 77, 77, 0.2);
  --font-family: 'Poppins', sans-serif;
}


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

body {
  font-family: var(--font-family);
  background-color: var(--background-color);
  color: var(--text-color);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* Container */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
    background: rgb(15 23 42 / 95%);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 20px;
    margin-bottom: 30px;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text);
  text-decoration: none;
  font-size: 1.5rem;
  font-weight: 600;
}

.logo i {
  color: var(--primary);
}

h1, h2, h3 {
  color: var(--primary-color);
}

/* Navigation */
nav a {
  color: var(--text-color);
  text-decoration: none;
  margin-left: 20px;
  font-weight: 500;
  transition: color 0.3s ease;
}

nav a:hover {
  color: var(--accent-color);
}

/* Button Styling */
.btn {
  display: inline-block;
  background-color: var(--primary-color);
  color: var(--text-color);
  padding: 10px 20px;
  text-decoration: none;
  border-radius: 5px;
  font-weight: 600;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

.btn:hover {
  background-color: var(--secondary-color);
  transform: translateY(-2px);
}

.btn-primary {
  background-color: var(--primary-color);
  border: none;
  padding: 12px 20px;
  border-radius: 0.5rem;
  cursor: pointer;
  width: 100%;
  font-size: 1.1em;
  font-weight: bold;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

.btn-primary:hover {
  background-color: var(--secondary-color);
  transform: translateY(-2px);
}

/* Main Section */
main {
  padding-top: 120px;
}

section {
  padding: 60px 0;
  border-bottom: 1px solid var(--primary-color);
}

/* Register Container */
.register-container {
  width: 100%;
  max-width: 700px;
  margin: 100px auto;
  padding: 30px;
  background-color: var(--background-color);
}

p.mt-3 {
    margin-top: 20px;
}

.register-container h2 {
  color: var(--text-color);
  text-align: center;
  margin-bottom: 25px;
  font-size: 1.5rem;
  font-family: var(--font-family);
}

/* Form Styling */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 7px;
  color: var(--text-color);
  font-size: 1em;
}

.form-group input {
  width: 100%;
  padding: 12px;
  border: #475a6f;
  border-radius: 0.25rem;
  background-color: var(--input-background);
  color: var(--input-text-color);
  font-size: 1em;
}

.form-group input::placeholder {
  color: #cccccc;
}

a {
  color: #38bdf6;
  text-decoration: none;
}

.form-group input:focus {
  border-color: var(--accent-color);
  outline: none;
  box-shadow: 0 0 8px rgba(0, 168, 255, 0.5);
  transition: all 0.2s ease;
}

/* Error Handling */
.error-message {
  color: var(--error-color);
  font-size: 0.9em;
  margin-top: 5px;
  background-color: var(--error-background);
  padding: 10px;
  border-radius: 4px;
  opacity: 0; /* Start hidden */
  transition: opacity 0.3s ease; /* Smooth transition */
  visibility: hidden; /* Prevent layout shift */
}

/* Class to show the error message */
.error-message.visible {
  opacity: 1; /* Fully visible */
  visibility: visible; /* Ensure it can be seen */
  display: block; /* Set display to block */
}


/* Password Toggle */
.password-toggle {
  position: relative;
}

.password-toggle input {
  padding-right: 40px;
}

.password-toggle .toggle-icon {
  position: absolute;
  top: 50%;
  right: 10px;
  transform: translateY(-50%);
  cursor: pointer;
  color: var(--text-color);
}

/* Footer */
footer {
  background-color: rgba(0, 0, 0, 0.8);
  text-align: center;
  padding: 20px;
  margin-top: auto;
  color: var(--text-color);
}

/* Media Queries */
@media (max-width: 768px) {
  header .container {
    flex-direction: column;
  }

  nav {
    margin-top: 20px;
  }

  nav a {
    display: block;
    margin: 10px 0;
  }

  .register-container {
    width: 100%;
  }

  .flex-item {
    flex-basis: 100%;
  }
}