/* ==========================================================================
   Components - Buttons, Cards, Tabs, Modals, Accordion, Marquee, Forms
   ========================================================================== */

/* Buttons */
.na-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  border-radius: var(--na-radius-md);
  transition: transform var(--na-dur-micro) var(--na-ease-out),
              box-shadow var(--na-dur-micro) var(--na-ease-out),
              background var(--na-dur-micro) var(--na-ease-out);
  position: relative;
  overflow: hidden;
  text-align: center;
  white-space: nowrap;
}

.na-btn:active {
  transform: scale(0.98);
}

.na-btn-sm {
  height: 36px;
  padding: 0 16px;
  font-size: var(--na-text-sm);
}

.na-btn-md {
  height: 44px;
  padding: 0 22px;
  font-size: var(--na-text-base);
}

.na-btn-lg {
  height: 52px;
  padding: 0 28px;
  font-size: var(--na-text-base);
}

.na-btn-primary {
  background: var(--na-grad-brand);
  color: var(--na-text-inverse);
  box-shadow: var(--na-shadow-btn);
}
.na-btn-primary:hover {
  box-shadow: var(--na-shadow-btn-hover);
  transform: translateY(-2px);
  color: var(--na-text-inverse);
}

.na-btn-accent {
  background: var(--na-accent);
  color: var(--na-text-inverse);
}
.na-btn-accent:hover {
  background: var(--na-accent-hover);
  transform: translateY(-2px);
  color: var(--na-text-inverse);
}

.na-btn-outline {
  background: var(--na-surface);
  color: var(--na-text-main);
  border: 1px solid var(--na-border-strong);
}
.na-btn-outline:hover {
  border-color: var(--na-brand);
  color: var(--na-brand);
  transform: translateY(-2px);
}

.na-btn-ghost {
  background: rgba(255, 255, 255, 0.16);
  color: var(--na-text-main);
  border: 1px solid rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(8px);
}
.na-btn-ghost:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

.na-btn-sun {
  background: var(--na-sun);
  color: var(--na-text-main);
  box-shadow: var(--na-shadow-sun);
}
.na-btn-sun:hover {
  background: var(--na-sun-deep);
  transform: translateY(-2px);
}

/* Badges */
.na-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: var(--na-text-xs);
  font-weight: 700;
  border-radius: var(--na-radius-full);
}

.na-badge-brand {
  background: var(--na-brand-light);
  color: var(--na-brand);
}

.na-badge-success {
  background: var(--na-success-bg);
  color: var(--na-success);
  border: 1px solid var(--na-success-border);
}

.na-badge-accent {
  background: var(--na-accent-light);
  color: var(--na-accent);
}

.na-badge-sun {
  background: var(--na-sun-light);
  color: #B45309;
}

/* Category Tiles (The 4 Colored Program Boxes) */
.na-category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--na-grid-gap);
}

@media (max-width: 991px) {
  .na-category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .na-category-grid {
    grid-template-columns: 1fr;
  }
}

.na-category-tile {
  height: 240px;
  border-radius: var(--na-radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--na-shadow-card);
  transition: transform var(--na-dur-base) var(--na-ease-spring), box-shadow var(--na-dur-base);
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.na-category-tile:hover {
  transform: translateY(-6px);
  box-shadow: var(--na-shadow-hover);
}

.na-tile-teal { background: var(--na-grad-teal); color: #FFFFFF; }
.na-tile-crimson { background: var(--na-grad-crimson); color: #FFFFFF; }
.na-tile-orange { background: var(--na-grad-orange); color: #FFFFFF; }
.na-tile-lime { background: var(--na-grad-lime); color: #1F2A6B; }

.na-category-tile .na-tile-title {
  font-size: var(--na-text-xl);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: auto;
}

.na-category-tile .na-tile-icon {
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--na-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Feature Row Icons */
.na-feature-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--na-grid-gap);
}

@media (max-width: 768px) {
  .na-feature-row {
    grid-template-columns: 1fr;
  }
}

.na-feature-item {
  background: var(--na-surface);
  border-radius: var(--na-radius-lg);
  padding: 28px;
  box-shadow: var(--na-shadow-card);
  border: 1px solid var(--na-border);
  display: flex;
  align-items: center;
  gap: 20px;
  transition: transform var(--na-dur-base) var(--na-ease-spring);
}

.na-feature-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--na-shadow-hover);
}

.na-feature-icon-circle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--na-brand-light);
  color: var(--na-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--na-dur-base) var(--na-ease-elastic);
}

.na-feature-item:hover .na-feature-icon-circle {
  transform: scale(1.1);
  background: var(--na-brand);
  color: var(--na-text-inverse);
}

.na-feature-item h3 {
  font-size: var(--na-text-lg);
  font-weight: 700;
}

/* Filter Tabs */
.na-filter-tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}

.na-tab-pill {
  padding: 10px 20px;
  border-radius: var(--na-radius-full);
  font-size: var(--na-text-sm);
  font-weight: 600;
  background: var(--na-surface);
  color: var(--na-text-muted);
  border: 1px solid var(--na-border-strong);
  cursor: pointer;
  transition: all var(--na-dur-micro) var(--na-ease-out);
}

.na-tab-pill:hover {
  border-color: var(--na-brand);
  color: var(--na-brand);
  transform: translateY(-2px);
}

.na-tab-pill.is-active {
  background: var(--na-grad-brand);
  color: var(--na-text-inverse);
  border-color: transparent;
  box-shadow: var(--na-shadow-btn);
}

/* Course & University Cards */
.na-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--na-grid-gap);
}

@media (max-width: 991px) {
  .na-card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .na-card-grid {
    grid-template-columns: 1fr;
  }
}

.na-card {
  background: var(--na-surface);
  border-radius: var(--na-radius-lg);
  padding: 24px;
  box-shadow: var(--na-shadow-card);
  border: 1px solid var(--na-border);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  min-width: 0;
  width: 100%;
  box-sizing: border-box;
  transition: transform var(--na-dur-base) var(--na-ease-spring), box-shadow var(--na-dur-base);
}

.na-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--na-shadow-hover);
}

.na-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--na-grad-edge);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--na-dur-base) var(--na-ease-out);
}

.na-card:hover::before {
  transform: scaleX(1);
}

.na-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 16px;
  min-width: 0;
}

.na-card-title {
  font-size: var(--na-text-xl);
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--na-text-main);
  min-width: 0;
  overflow-wrap: break-word;
  word-break: break-word;
}

.na-card-title a:hover {
  color: var(--na-brand);
}

.na-details-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 22px;
  border-top: 1px solid var(--na-border);
  padding-top: 14px;
  flex: 1;
  min-width: 0;
}

.na-details-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: var(--na-text-sm);
  min-width: 0;
}

.na-details-label {
  color: var(--na-text-muted);
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
}

.na-details-val {
  font-weight: 700;
  color: var(--na-text-main);
  text-align: right;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
  flex: 1;
}

.na-card-footer {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: auto;
  width: 100%;
}

.na-card-footer .na-btn {
  width: 100%;
  min-width: 0;
  padding: 0 12px;
  font-size: 0.8125rem;
  white-space: nowrap;
}

@media (max-width: 640px) {
  .na-card {
    padding: 20px 16px;
    border-radius: var(--na-radius-md);
  }

  .na-card-title {
    font-size: 1.125rem;
    margin-bottom: 14px;
  }
}

@media (max-width: 480px) {
  .na-card-footer {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .na-card-footer .na-btn {
    width: 100%;
    height: 40px;
    font-size: 0.875rem;
  }

  .na-details-item {
    font-size: 0.8125rem;
  }
}

/* University Card specific */
.na-uni-logo-box {
  height: 48px;
  display: flex;
  align-items: center;
  margin-bottom: 14px;
}

.na-uni-logo-box img {
  max-height: 44px;
  max-width: 160px;
  object-fit: contain;
}

/* Marquee */
.na-marquee {
  width: 100%;
  overflow: hidden;
  display: flex;
  position: relative;
  padding: 16px 0;
}

.na-marquee-track {
  display: flex;
  gap: 40px;
  width: max-content;
  animation: naMarqueeLeft 30s linear infinite;
}

.na-marquee-track.reverse {
  animation: naMarqueeRight 40s linear infinite;
}

.na-marquee:hover .na-marquee-track {
  animation-play-state: paused;
}

.na-marquee-item {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  background: var(--na-surface);
  border: 1px solid var(--na-border);
  border-radius: var(--na-radius-md);
  box-shadow: var(--na-shadow-xs);
  min-width: 160px;
  height: 60px;
  opacity: 0.8;
  filter: grayscale(100%);
  transition: opacity var(--na-dur-micro), filter var(--na-dur-micro);
}

.na-marquee-item:hover {
  opacity: 1;
  filter: none;
}

/* FAQ Accordion */
.na-faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 800px;
  margin: 0 auto;
}

.na-faq-item {
  background: #FFFFFF;
  border-radius: var(--na-radius-lg, 12px);
  border: 1px solid var(--na-border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  overflow: hidden;
  transition: all var(--na-dur-micro) ease;
}

.na-faq-item:hover {
  border-color: #CBD5E1;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.na-faq-item.is-open {
  border-color: var(--na-brand);
  border-left: 4px solid var(--na-brand);
  background: #FAFAFE;
}

.na-faq-btn {
  width: 100%;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: transparent;
  border: none;
  outline: none;
  font-family: inherit;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--na-text-main);
  text-align: left;
  cursor: pointer;
  transition: color var(--na-dur-micro) ease;
}

.na-faq-btn:hover {
  color: var(--na-brand);
}

.na-faq-btn span {
  flex: 1;
  line-height: 1.45;
}

.na-faq-icon {
  transition: transform var(--na-dur-base) var(--na-ease-spring);
  color: var(--na-brand);
  flex-shrink: 0;
}

.na-faq-item.is-open .na-faq-icon {
  transform: rotate(180deg);
}

.na-faq-collapse {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--na-dur-base) var(--na-ease-out);
}

.na-faq-item.is-open .na-faq-collapse {
  grid-template-rows: 1fr;
}

.na-faq-content {
  overflow: hidden;
  padding: 0 24px 20px;
  color: var(--na-text-body);
  font-size: var(--na-text-sm);
  line-height: 1.6;
}

/* Modals */
.na-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(31, 42, 107, 0.55);
  backdrop-filter: blur(6px);
  z-index: var(--na-z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--na-dur-base) var(--na-ease-out);
}

.na-modal-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

.na-modal-dialog {
  background: var(--na-surface);
  border-radius: var(--na-radius-lg);
  padding: 32px;
  width: 100%;
  max-width: 520px;
  box-shadow: var(--na-shadow-float);
  position: relative;
  transform: scale(0.94) translateY(12px);
  transition: transform var(--na-dur-base) var(--na-ease-spring);
  max-height: 90vh;
  overflow-y: auto;
}

.na-modal-backdrop.is-open .na-modal-dialog {
  transform: scale(1) translateY(0);
}

.na-modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--na-bg-tint);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--na-text-muted);
  transition: background var(--na-dur-micro), color var(--na-dur-micro);
}

.na-modal-close:hover {
  background: var(--na-border);
  color: var(--na-text-main);
}

/* Forms */
.na-form-group {
  margin-bottom: 18px;
}

.na-form-label {
  display: block;
  font-size: var(--na-text-sm);
  font-weight: 600;
  color: var(--na-text-main);
  margin-bottom: 6px;
}

.na-input, .na-select, .na-textarea {
  width: 100%;
  height: 48px;
  padding: 0 16px;
  border-radius: var(--na-radius-md);
  border: 1px solid var(--na-border-strong);
  background: var(--na-surface);
  color: var(--na-text-main);
  font-size: var(--na-text-base);
  transition: border-color var(--na-dur-micro), box-shadow var(--na-dur-micro);
}

.na-textarea {
  height: auto;
  min-height: 100px;
  padding: 12px 16px;
}

.na-input:focus, .na-select:focus, .na-textarea:focus {
  border-color: var(--na-brand);
  box-shadow: 0 0 0 4px rgba(59, 47, 128, 0.18);
}

/* Floating Actions */
.na-floating-actions {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 999;
}

.na-floating-actions.na-pos-bottom-left {
  right: auto;
  left: 24px;
}

.na-float-whatsapp {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--na-shadow-float);
  animation: naPulseRing 2.4s infinite;
}

.na-scroll-top {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--na-surface);
  color: var(--na-brand);
  border: 1px solid var(--na-border);
  box-shadow: var(--na-shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity var(--na-dur-base), transform var(--na-dur-base);
}

.na-scroll-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

/* ==========================================================================
   Search Autocomplete Dropdown Component
   ========================================================================== */
.na-search-results-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-height: 480px;
  overflow-y: auto;
  padding: 4px;
}

.na-search-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.na-search-group-header {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--na-text-dim);
  padding: 4px 8px;
}

.na-search-group-icon {
  color: var(--na-brand);
}

.na-search-items-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.na-search-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  border-radius: var(--na-radius-sm);
  background: var(--na-bg);
  border: 1px solid transparent;
  text-decoration: none;
  transition: all var(--na-dur-micro) var(--na-ease-out);
  gap: 12px;
}

.na-search-item:hover,
.na-search-item.is-selected {
  background: #FFFFFF;
  border-color: var(--na-brand-light);
  box-shadow: 0 4px 12px rgba(59, 47, 128, 0.08);
  transform: translateX(4px);
}

.na-search-item-info {
  flex: 1;
  min-width: 0;
}

.na-search-item-title {
  display: block;
  font-weight: 700;
  font-size: 14px;
  color: var(--na-text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.na-search-item-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--na-text-muted);
  margin-top: 2px;
}

.na-search-item-dot {
  color: var(--na-text-dim);
  font-size: 8px;
}

.na-search-item-action {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.na-search-item-badge {
  font-size: 12px;
  font-weight: 700;
  color: var(--na-brand);
  background: var(--na-brand-light);
  padding: 2px 8px;
  border-radius: var(--na-radius-full);
}

.na-search-item-link {
  font-size: 12px;
  font-weight: 700;
  color: var(--na-brand);
}

.na-search-arrow {
  color: var(--na-brand);
  opacity: 0.6;
  transition: transform var(--na-dur-micro), opacity var(--na-dur-micro);
}

.na-search-item:hover .na-search-arrow,
.na-search-item.is-selected .na-search-arrow {
  transform: translateX(3px);
  opacity: 1;
}

.na-search-empty-state {
  padding: 32px 20px;
  text-align: center;
}

.na-search-empty-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--na-bg-tint);
  color: var(--na-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
}

.na-search-empty-state h4 {
  font-size: var(--na-text-base);
  color: var(--na-text-main);
  margin-bottom: 6px;
}

.na-search-empty-state p {
  font-size: var(--na-text-sm);
  color: var(--na-text-muted);
  max-width: 380px;
  margin: 0 auto 16px;
  line-height: 1.5;
}

/* ==========================================================================
   Toast Notification System
   ========================================================================== */
.na-toast-container {
  position: fixed;
  top: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 10000;
  pointer-events: none;
  max-width: 400px;
  width: calc(100% - 48px);
}

.na-toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-radius: var(--na-radius-md);
  background: var(--na-surface);
  box-shadow: 0 12px 32px -4px rgba(31, 42, 107, 0.18), 0 0 0 1px var(--na-border);
  animation: naToastSlideIn 350ms cubic-bezier(0.16, 1, 0.3, 1) both;
  color: var(--na-text-main);
  font-size: var(--na-text-sm);
  line-height: 1.4;
}

.na-toast.is-leaving {
  animation: naToastSlideOut 300ms ease-in forwards;
}

.na-toast-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
}

.na-toast-success .na-toast-icon {
  background: var(--na-success-bg);
  color: var(--na-success);
}

.na-toast-error .na-toast-icon {
  background: var(--na-danger-bg);
  color: var(--na-danger);
}

.na-toast-info .na-toast-icon {
  background: var(--na-brand-light);
  color: var(--na-brand);
}

.na-toast-message {
  flex: 1;
  font-weight: 600;
}

/* Status Pulse Dot */
.na-pulse-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--na-success);
  margin-right: 6px;
  animation: naPulseDot 2s infinite;
}

/* Honeypot field (hidden from humans, catches spambots) */
.na-hp-field {
  position: absolute !important;
  left: -9999px !important;
  top: -9999px !important;
  opacity: 0 !important;
  pointer-events: none !important;
  height: 0 !important;
  width: 0 !important;
  margin: 0 !important;
  padding: 0 !important;
}

/* University Cards & Logo Boxes */
.na-uni-logo-box {
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  min-width: 120px;
}

.na-uni-logo-box img {
  height: 42px;
  width: auto;
  max-width: 150px;
  object-fit: contain;
  display: block;
}

.na-uni-card-item {
  transition: transform var(--na-dur-base) var(--na-ease-out), box-shadow var(--na-dur-base) var(--na-ease-out), border-color var(--na-dur-base) var(--na-ease-out);
}

.na-uni-card-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px -10px rgba(31, 42, 107, 0.16);
  border-color: rgba(59, 47, 128, 0.25);
}