/* Base body styles */
body {
  font-family: var(--font-family-base);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  margin: 0;
  padding: 0;
  min-height: 100vh;
}

/* Header and Navigation with fixed positioning */
.header {
  background-color: var(--color-background);
  padding: var(--spacing-xs) var(--spacing-md);
  color: var(--color-text);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  border-bottom: 1px solid var(--sidebar-border);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  height: var(--header-height);
}

.header h1 {
  margin: 0;
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
}

.header a {
  color: var(--color-text) !important;
  text-decoration: none;
}

/* User Info Section */
.user-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--text-sm);
}

.username {
  color: var(--color-text);
  font-weight: var(--font-semibold);
}

.role-badge {
  display: inline-block;
  padding: var(--spacing-xxs) var(--spacing-xs);
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  border-radius: 3px;
  text-transform: uppercase;
}

.role-superuser {
  background-color: #dc2626;
  color: var(--color-background);
}

.role-back-office {
  background-color: #2563eb;
  color: var(--color-background);
}

.role-front-office {
  background-color: #059669;
  color: var(--color-background);
}

.role-view-only {
  background-color: #0891b2;
  color: var(--color-background);
}

.role-user {
  background-color: #6b7280;
  color: var(--color-background);
}

.logout-link {
  padding: var(--spacing-xxs) var(--spacing-sm);
  background-color: rgba(0, 0, 0, 0.05);
  border-radius: 3px;
  transition: background-color var(--transition-fast);
}

/* Reset button styles for logout button */
button.logout-link {
  border: none;
  color: var(--color-text);
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  text-decoration: none;
}

.logout-link:hover {
  background-color: rgba(0, 0, 0, 0.1);
}



/* Hamburger menu button -- hidden on desktop, shown at tablet */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: var(--spacing-xs);
  background: transparent;
  border: none;
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.sidebar-open .hamburger span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.sidebar-open .hamburger span:nth-child(2) {
  opacity: 0;
}

.sidebar-open .hamburger span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Sidebar overlay backdrop */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.4);
  z-index: 1000; /* same as --z-header, below drawer (1001) */
}

.sidebar-open .sidebar-overlay {
  display: block;
}

/* Layout positioning owned by main.css */

/* Form Elements */
input[type="text"],
input[type="password"],
input[type="number"],
textarea,
select {
  padding: var(--spacing-xs) var(--spacing-sm);
  border: var(--border-thin) solid var(--color-border);
  font-size: var(--text-base);
  box-sizing: border-box;
}

button,
input[type="submit"] {
  background-color: var(--color-primary);
  color: var(--color-background);
  padding: var(--spacing-xs) var(--spacing-md);
  border: var(--border-thin) solid var(--color-border);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  font-size: var(--text-base);
  min-width: 24px;
  min-height: 36px;
  line-height: 1;
}

button:hover,
input[type="submit"]:hover {
/*  background-color: var(--color-secondary); */
  background-color: var(--button-hover-go);
}

button.delete,
input[type="submit"].delete {
  background-color: var(--color-error);
}

button.cancel,
input[type="submit"].cancel {
  background-color: var(--color-warning);
}

/* Status Indicators */
.staff-indicator,
.instructor-indicator {
  display: inline-block;
  padding: var(--spacing-xxs) var(--spacing-xs);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
}

.staff-indicator {
  background-color: var(--color-warning);
  color: var(--color-background);
}

.instructor-indicator {
  background-color: var(--color-success);
  color: var(--color-background);
}

/* Link styles owned by main.css */

/* Django Messages Display */
.messages-container {
  position: fixed;
  top: var(--total-top-height);
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  width: 90%;
  max-width: 600px;
  padding: var(--spacing-sm);
}

.message {
  padding: var(--spacing-sm) var(--spacing-md);
  margin-bottom: var(--spacing-xs);
  border-radius: var(--radius-base);
  box-shadow: var(--shadow-md);
  font-weight: var(--font-medium);
  animation: slideDown 0.3s ease-out;
}

.message-error {
  background-color: #fee;
  border-left: var(--border-thick) solid #c00;
  color: #c00;
}

.message-warning {
  background-color: var(--color-warning-light);
  border-left: var(--border-thick) solid var(--color-warning);
  color: var(--color-warning);
}

.message-success {
  background-color: #efe;
  border-left: var(--border-thick) solid #0a0;
  color: #0a0;
  animation: slideDown 0.3s ease-out, fadeOut 0.5s ease 5s forwards;
}

.message-info {
  background-color: #eef;
  border-left: var(--border-thick) solid #00a;
  color: #00a;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeOut {
  to {
    opacity: 0;
    height: 0;
    padding: 0;
    margin: 0;
    overflow: hidden;
  }
}

/* Read-Only Mode Styling */
.read-only-banner {
  background-color: #e0f2fe;  /* Light cyan */
  border-left: 4px solid #0891b2;  /* Cyan border */
  padding: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  border-radius: var(--radius-base);
  font-size: var(--text-sm);
}

.read-only-banner strong {
  color: #0891b2;
}

button.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Submit button state during form submission */
input[type="submit"].submitting,
button[type="submit"].submitting {
  opacity: 0.6;
  pointer-events: none;
  cursor: wait;
}

/* CSS spinner shown inside <button> elements during submission */
button[type="submit"].submitting .btn-text {
  visibility: hidden;
}

button[type="submit"].submitting::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  top: 50%;
  left: 50%;
  margin-top: -7px;
  margin-left: -7px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: btn-spin 0.6s linear infinite;
}

button[type="submit"] {
  position: relative;
}

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

/* Media Queries -- header/nav only; layout queries are in main.css */
@media (max-width: 1200px) /* --breakpoint-lg */ {
  .hamburger {
    display: flex;
  }

  .header {
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .header h1 {
    font-size: var(--text-xl);
  }

  .logout-link {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }
}

@media (max-width: 768px) /* --breakpoint-md */ {
  .header h1 {
    font-size: var(--text-lg);
  }

  .user-info {
    font-size: var(--text-xs);
    gap: var(--spacing-xs);
    flex-wrap: wrap;
  }
}

/* Navigation loading indicator */
.body.loading #content {
  opacity: 0.4;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.loading-spinner {
  display: none;
}

.body.loading .loading-spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  position: fixed;
  top: var(--total-top-height);
  left: calc(var(--sidebar-width) + var(--sidebar-spacing));
  right: 0;
  bottom: 0;
  z-index: 50;
  pointer-events: none;
}

.loading-spinner::after {
  content: "";
  width: 28px;
  height: 28px;
  border: 3px solid #E2E8F0;
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: loading-spin 0.6s linear infinite;
}

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

@media (max-width: 1200px) {
  .body.loading .loading-spinner {
    left: 0;
  }
}