/* EnglishSprint Component Library - Cards, Badges, Alerts, Modals, Spinners, Nav & Sidebar */

/* 1. CARDS */
.card {
  background-color: var(--color-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.card-header {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 1rem;
  margin-bottom: 1rem;
}

.card-footer {
  border-top: 1px solid var(--color-border);
  padding-top: 1rem;
  margin-top: 1rem;
}

/* Glassmorphism Card variant */
.card-glass {
  background: var(--color-card-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-card-glass-border);
  box-shadow: var(--shadow-md);
}

/* 2. BADGES */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.badge-primary { background-color: rgba(37, 99, 235, 0.1); color: var(--color-primary); }
.badge-secondary { background-color: rgba(30, 64, 175, 0.1); color: var(--color-secondary); }
.badge-success { background-color: rgba(16, 185, 129, 0.1); color: var(--color-success); }
.badge-warning { background-color: rgba(245, 158, 11, 0.1); color: var(--color-warning); }
.badge-error { background-color: rgba(239, 68, 68, 0.1); color: var(--color-error); }

/* 3. ALERTS */
.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  border: 1px solid transparent;
  animation: fadeIn 0.3s ease;
}

.alert-success { background-color: var(--color-success-bg); border-color: rgba(16, 185, 129, 0.2); color: #065F46; }
.alert-error { background-color: var(--color-error-bg); border-color: rgba(239, 68, 68, 0.2); color: #991B1B; }
.alert-warning { background-color: var(--color-warning-bg); border-color: rgba(245, 158, 11, 0.2); color: #92400E; }
.alert-info { background-color: var(--color-info-bg); border-color: rgba(59, 130, 246, 0.2); color: #1E40AF; }

.alert-title {
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.alert-close {
  margin-left: auto;
  background: transparent;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  line-height: 1;
  color: inherit;
  opacity: 0.7;
}

.alert-close:hover {
  opacity: 1;
}

/* 4. SPINNING LOADER */
.spinner {
  width: 2rem;
  height: 2rem;
  border: 3px solid rgba(37, 99, 235, 0.15);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

.spinner-sm {
  width: 1.25rem;
  height: 1.25rem;
  border-width: 2px;
}

.spinner-lg {
  width: 3.5rem;
  height: 3.5rem;
  border-width: 4px;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 5. PROGRESS BAR */
.progress-container {
  width: 100%;
  height: 8px;
  background-color: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: 0.5rem 0;
}

.progress-bar {
  height: 100%;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width 0.5s ease-out;
  width: 0%;
}

.progress-success { background-color: var(--color-success); }
.progress-warning { background-color: var(--color-warning); }

/* 6. MODALS */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
  padding: 1rem;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-container {
  background-color: var(--color-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95) translateY(10px);
  transition: transform var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.modal-overlay.active .modal-container {
  transform: scale(1) translateY(0);
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0;
}

.modal-close {
  background: transparent;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.modal-close:hover {
  color: var(--color-text);
}

.modal-body {
  padding: 1.5rem;
  flex-grow: 1;
}

.modal-footer {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* 7. TOAST NOTIFICATIONS */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 1100;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 380px;
  width: calc(100vw - 3rem);
}

.toast {
  background-color: var(--color-card);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  animation: slideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  transition: all 0.3s ease;
}

.toast.toast-success { border-left-color: var(--color-success); }
.toast.toast-error { border-left-color: var(--color-error); }
.toast.toast-warning { border-left-color: var(--color-warning); }

.toast-content {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
}

.toast-close {
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 1rem;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* 8. PUBLIC NAVBAR */
.navbar {
  position: sticky;
  top: 0;
  z-index: 900;
  background: var(--color-navbar-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  height: 70px;
  display: flex;
  align-items: center;
}

.navbar-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

.nav-menu {
  display: flex;
  list-style: none;
  gap: 1.5rem;
  align-items: center;
}

.nav-link {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.5rem 0;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Hamburger Menu for Mobile */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 0.25rem;
}

.nav-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

/* 9. PUBLIC FOOTER */
.footer {
  background-color: var(--color-footer-bg);
  color: #94A3B8;
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--color-footer-border);
  font-size: 0.9rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-logo {
  color: var(--color-white);
  margin-bottom: 1rem;
}

.footer-about p {
  color: #94A3B8;
  margin-bottom: 1.5rem;
  max-width: 300px;
}

.footer-socials {
  display: flex;
  gap: 1rem;
}

.social-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background-color: #1E293B;
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast);
}

.social-icon:hover {
  background-color: var(--color-primary);
}

.footer-heading {
  color: var(--color-white);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link {
  color: #94A3B8;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-white);
}

.footer-newsletter p {
  color: #94A3B8;
  margin-bottom: 1rem;
}

.newsletter-form {
  display: flex;
  gap: 0.5rem;
}

.newsletter-input {
  background-color: #1E293B;
  border: 1px solid #334155;
  color: var(--color-white);
  flex-grow: 1;
}

.newsletter-input:focus {
  border-color: var(--color-primary);
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 0;
  border-top: 1px solid #1E293B;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
}

/* 10. DASHBOARD LAYOUT & SIDEBARS */
.dashboard-layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 260px;
  background-color: var(--color-card);
  border-right: 1px solid var(--color-border);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  flex-shrink: 0;
  transition: width var(--transition-normal);
}

.sidebar-brand {
  margin-bottom: 2rem;
}

.sidebar-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex-grow: 1;
}

.sidebar-item-header {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  padding: 0.75rem 0.75rem 0.25rem;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-weight: 600;
  transition: all var(--transition-fast);
}

.sidebar-link:hover,
.sidebar-link.active {
  color: var(--color-primary);
  background-color: var(--color-bg);
}

.sidebar-link svg {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-fast);
}

.sidebar-link:hover svg {
  transform: translateX(2px);
}

.sidebar-footer {
  margin-top: auto;
  border-top: 1px solid var(--color-border);
  padding-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.sidebar-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background-color: var(--color-bg-alt);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
}

.sidebar-user-info {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  max-width: 140px;
}

.sidebar-user-name {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-text);
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

.sidebar-user-role {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.dashboard-viewport {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.dashboard-header {
  height: 70px;
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-card);
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 800;
}

.dashboard-header-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
}

.dashboard-content {
  padding: 2rem;
  overflow-y: auto;
  flex-grow: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
}

/* Responsive sidebar and navigation */
@media (max-width: 992px) {
  .footer-container {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }
  .nav-menu {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background-color: var(--color-card);
    flex-direction: column;
    padding: 1.5rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    gap: 1rem;
  }
  .nav-menu.active {
    display: flex;
  }
  .nav-actions {
    display: none;
  }
  .nav-actions.active {
    display: flex;
  }

  .footer-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .dashboard-layout {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    position: relative;
    padding: 1rem 1.5rem;
  }
  .sidebar-menu {
    display: none;
  }
  .sidebar-menu.active {
    display: flex;
    margin: 1rem 0;
  }
  .sidebar-footer {
    display: none;
  }
  .sidebar-footer.active {
    display: flex;
  }
}

/* 8. SKELETON SHIMMER LOADERS */
.skeleton-box {
  display: inline-block;
  height: 1em;
  position: relative;
  overflow: hidden;
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  width: 100%;
}

.skeleton-box::after {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  transform: translateX(-100%);
  background-image: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.1) 20%,
    rgba(255, 255, 255, 0.3) 60%,
    rgba(255, 255, 255, 0) 100%
  );
  animation: shimmer 1.6s infinite ease-in-out;
  content: '';
}

@keyframes shimmer {
  100% {
    transform: translateX(100%);
  }
}

/* 9. MOBILE HEADER POLISH */
@media (max-width: 576px) {
  .dashboard-header {
    padding: 0 0.75rem !important;
    gap: 0.5rem !important;
  }
  .dashboard-header-title {
    font-size: 1.05rem !important;
  }
  .dashboard-header .d-flex.align-center.gap-3 {
    gap: 0.5rem !important;
  }
  .dashboard-header .badge {
    font-size: 0.7rem !important;
    padding: 0.2rem 0.5rem !important;
  }
  .dashboard-header .btn-sm {
    font-size: 0.75rem !important;
    padding: 0.25rem 0.5rem !important;
  }
}