/* Updated CSS for white background and black text theme */
:root {
  --primary-color: #ffffff;
  --secondary-color: #dc3545;
  --dark-bg: #ffffff;
  --light-text: #000000;
  --muted-text: #6c757d;
}

/* Remove all margins, padding, and ensure full width white background */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  background-color: #ffffff;
  overflow-x: hidden;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--primary-color);
  color: var(--light-text);
}

/* Ensure containers take full width without side margins */
.container-fluid {
  padding-left: 0;
  padding-right: 0;
  margin-left: 0;
  margin-right: 0;
  max-width: 100%;
  width: 100%;
}

/* Updated navigation for white background */
.navbar {
  background-color: #ffffff !important;
  border-bottom: 2px solid #e0e0e0;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.navbar-brand .logo-placeholder {
  font-weight: bold;
  font-size: 1.5rem;
  color: var(--secondary-color);
}

.navbar-nav .nav-link {
  color: var(--light-text) !important;
  font-weight: 500;
}

.navbar-nav .nav-link:hover {
  color: var(--secondary-color) !important;
}

/* Hero Section with white background */
.hero-section {
  background: #ffffff;
  min-height: 100vh;
  display: flex;
  align-items: center;
  width: 100%;
  margin: 0;
  padding: 0;
}

.exam-info-card {
  background: #ffffff;
  border-radius: 15px;
  padding: 2rem;
  border: 1px solid #e0e0e0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.exam-info-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  border-color: var(--secondary-color);
}

.section-card {
  background: #ffffff;
  border-radius: 10px;
  padding: 1rem;
  text-align: center;
  border: 1px solid #e0e0e0;
  transition: all 0.3s ease;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.section-card:hover {
  transform: translateY(-5px);
  background: rgba(220, 53, 69, 0.05);
  border-color: var(--secondary-color);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.section-card h5 {
  color: var(--light-text);
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.section-card p {
  color: var(--secondary-color);
  margin: 0;
  font-weight: bold;
}

/* Features Section with white background */
.features-section {
  background-color: #ffffff;
  padding: 4rem 0;
}

.feature-card {
  background: #ffffff;
  border-radius: 15px;
  padding: 2rem;
  height: 100%;
  border: 1px solid #e0e0e0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-10px);
  border-color: var(--secondary-color);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--secondary-color);
}

.feature-card h4 {
  color: var(--light-text);
  margin-bottom: 1rem;
}

.feature-card p {
  color: var(--muted-text);
}

/* Buttons */
.btn-danger {
  background-color: var(--secondary-color);
  border-color: var(--secondary-color);
  font-weight: bold;
  padding: 0.75rem 2rem;
}

.btn-danger:hover {
  background-color: #c82333;
  border-color: #c82333;
}

.btn-outline-dark {
  border-width: 2px;
  font-weight: bold;
  padding: 0.75rem 2rem;
  color: var(--light-text);
  border-color: var(--light-text);
}

.btn-outline-dark:hover {
  background-color: var(--light-text);
  color: #ffffff;
}

.btn-outline-light {
  border-width: 2px;
  font-weight: bold;
  padding: 0.75rem 2rem;
  color: var(--light-text);
  border-color: #e0e0e0;
}

.btn-outline-light:hover {
  background-color: #f8f9fa;
  color: var(--light-text);
  border-color: var(--secondary-color);
}

/* Forms */
.form-control {
  background-color: #ffffff;
  border: 1px solid #ced4da;
  color: var(--light-text);
}

.form-control:focus {
  background-color: #ffffff;
  border-color: var(--secondary-color);
  color: var(--light-text);
  box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

.form-control::placeholder {
  color: var(--muted-text);
}

/* Cards with white background */
.card {
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
  color: var(--light-text);
}

.card-header {
  background-color: #f8f9fa;
  border-bottom: 1px solid #e0e0e0;
  color: var(--light-text);
}

/* Exam specific styles with white backgrounds */
.exam-timer {
  background-color: var(--secondary-color);
  color: white;
  padding: 1rem;
  border-radius: 10px;
  text-align: center;
  font-weight: bold;
  font-size: 1.2rem;
}

.question-card {
  background: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 10px;
  padding: 1.5rem;
  margin-bottom: 1rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.option-button {
  background: #ffffff;
  border: 2px solid #e0e0e0;
  color: var(--light-text);
  padding: 1rem;
  margin: 0.5rem 0;
  border-radius: 8px;
  transition: all 0.3s ease;
  cursor: pointer;
  width: 100%;
  text-align: left;
}

.option-button:hover {
  border-color: var(--secondary-color);
  background: rgba(220, 53, 69, 0.05);
}

.option-button.selected {
  background-color: var(--secondary-color);
  border-color: var(--secondary-color);
  color: white;
}

/* Footer with white background */
footer {
  background-color: #ffffff !important;
  border-top: 2px solid #e0e0e0;
  color: var(--light-text);
  box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.1);
  width: 100%;
  margin: 0;
}

footer p {
  color: var(--light-text);
}

footer .text-muted {
  color: var(--muted-text) !important;
}

/* Ensure all main content areas have full width white background */
.hero-section,
.features-section,
.profile-section,
.exam-section,
.auth-section,
main,
.main-content,
.content-wrapper {
  background-color: #ffffff;
  width: 100%;
  margin: 0;
}

.container,
.container-fluid {
  background-color: #ffffff;
}

/* Profile and other pages */
.profile-section,
.exam-section {
  background-color: #ffffff;
  min-height: 100vh;
}

/* Auth Section with white background */
.auth-section {
  background: #ffffff !important;
  min-height: 100vh;
  width: 100%;
  margin: 0;
  padding: 0;
}

.auth-card {
  background: #ffffff;
  border-radius: 15px;
  padding: 2.5rem;
  border: 1px solid #e0e0e0;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.auth-form .form-control {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-size: 1rem;
  background-color: #ffffff;
  border: 1px solid #ced4da;
  color: var(--light-text);
}

.auth-form .form-control:focus {
  box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
  border-color: var(--secondary-color);
  background-color: #ffffff;
}

.form-text {
  font-size: 0.8rem;
  margin-top: 0.25rem;
  color: var(--muted-text);
}

/* Responsive */
@media (max-width: 768px) {
  .hero-section {
    padding: 2rem 0;
  }

  .exam-info-card {
    margin-top: 2rem;
  }

  .display-4 {
    font-size: 2rem;
  }
}

/* Alert customization */
.alert-success {
  background-color: rgba(40, 167, 69, 0.1);
  border-color: #28a745;
  color: #155724;
}

.alert-danger {
  background-color: rgba(220, 53, 69, 0.1);
  border-color: var(--secondary-color);
  color: #721c24;
}

.alert-info {
  background-color: rgba(23, 162, 184, 0.1);
  border-color: #17a2b8;
  color: #0c5460;
}

/* Text colors */
.text-dark {
  color: var(--light-text) !important;
}

.text-muted {
  color: var(--muted-text) !important;
}

/* Tables */
.table {
  background-color: #ffffff;
  color: var(--light-text);
}

.table th {
  border-top: none;
  color: var(--light-text);
}

.table td {
  color: var(--light-text);
}