:root {
  --nha-deep-teal: #1c4b2d;
  --nha-teal: #1b6f77;
  --nha-seafoam: #dcefe1;
  --nha-light: #f3f8f1;
  --nha-text: #1e2a1f;
  --nha-muted: #55645a;
  --nha-highlight: #3c9255;
}

html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
  background: var(--nha-light);
  color: var(--nha-text);
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

a {
  color: var(--nha-highlight);
}

a:hover,
a:focus {
  color: var(--nha-teal);
}

.navbar-nha {
  background-image: linear-gradient(90deg, var(--nha-deep-teal), var(--nha-teal));
  background-color: var(--nha-deep-teal);
  border: none;
}

.navbar-nha .navbar-brand {
  gap: 0.75rem;
}

.navbar-logo {
  height: 48px;
  width: auto;
}

.navbar-title {
  color: #ffffff;
  font-weight: 600;
  letter-spacing: 0.02em;
}

@media (max-width: 575.98px) {
  .navbar-title {
    display: none;
  }
}

.navbar-nha .nav-link {
  color: rgba(255, 255, 255, 0.85);
  font-weight: 500;
}

.navbar-nha .nav-link:hover,
.navbar-nha .nav-link:focus,
.navbar-nha .nav-link.active {
  color: #ffffff;
}

.navbar-nha .navbar-toggler {
  border-color: rgba(255, 255, 255, 0.4);
}

.navbar-nha .navbar-toggler:focus {
  box-shadow: 0 0 0 0.2rem rgba(255, 255, 255, 0.25);
}

.footer-nha {
  background-image: linear-gradient(90deg, var(--nha-deep-teal), var(--nha-teal));
  background-color: var(--nha-deep-teal);
}

.footer-nha .container {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9rem;
}

.btn-primary {
  background-color: var(--nha-highlight);
  border-color: var(--nha-highlight);
  font-weight: 600;
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--nha-teal);
  border-color: var(--nha-teal);
}

.btn-outline-light {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.6);
  font-weight: 600;
}

.btn-outline-light:hover,
.btn-outline-light:focus {
  background-color: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.85);
  color: #ffffff;
}

.btn-outline-secondary {
  color: var(--nha-deep-teal);
  border-color: var(--nha-deep-teal);
}

.btn-outline-secondary:hover,
.btn-outline-secondary:focus {
  background-color: var(--nha-deep-teal);
  color: #ffffff;
}

.card {
  border: none;
  border-radius: 1rem;
}

.card-header {
  border-bottom: none;
}

.card.shadow-sm {
  box-shadow: 0 0.75rem 1.5rem rgba(28, 75, 45, 0.12) !important;
}

.admin-dashboard {
  color: inherit;
}

.admin-sidebar {
  background: linear-gradient(160deg, var(--nha-deep-teal), var(--nha-teal));
  color: #ffffff;
}

.admin-sidebar .card-body {
  padding: 2rem 1.5rem;
}

.admin-sidebar .form-label,
.admin-sidebar .h4 {
  color: #ffffff;
}

.admin-sidebar .form-select,
.admin-sidebar .form-control {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.35);
  color: #ffffff;
}

.admin-sidebar .form-select:focus,
.admin-sidebar .form-control:focus {
  box-shadow: 0 0 0 0.25rem rgba(60, 146, 85, 0.35);
  border-color: rgba(255, 255, 255, 0.6);
}

.admin-sidebar .form-select option {
  color: var(--nha-text);
}

.admin-sidebar .text-danger {
  color: #ffdad4 !important;
}

.admin-sidebar .btn-primary {
  background-color: #ffffff;
  color: var(--nha-deep-teal);
  border-color: #ffffff;
}

.admin-sidebar .btn-primary:hover,
.admin-sidebar .btn-primary:focus {
  background-color: rgba(255, 255, 255, 0.85);
  color: var(--nha-deep-teal);
}

.admin-sidebar .btn-outline-light {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.55);
}

.admin-sidebar .btn-outline-light:hover,
.admin-sidebar .btn-outline-light:focus {
  background-color: rgba(255, 255, 255, 0.2);
}

.submission-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.submission-card {
  border-bottom: 1px solid rgba(28, 75, 45, 0.12);
  padding-bottom: 1.5rem;
}

.submission-card:last-child {
  border-bottom: none;
  padding-bottom: 0;
  margin-bottom: 0;
}

.submission-comments {
  font-style: italic;
  color: var(--nha-muted);
}

.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
}

.photo-thumb {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.photo-thumb-button {
  position: relative;
  display: flex;
  flex-direction: column;
  border: none;
  border-radius: 0.75rem;
  overflow: hidden;
  background-color: #ffffff;
  box-shadow: 0 0.5rem 1rem rgba(28, 75, 45, 0.1);
  cursor: pointer;
  padding: 0;
  text-align: left;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  width: 100%;
}

.photo-thumb-button:focus,
.photo-thumb-button:hover {
  transform: translateY(-4px);
  box-shadow: 0 0.75rem 1.5rem rgba(28, 75, 45, 0.18);
  outline: none;
}

.photo-thumb-button:focus-visible {
  outline: 3px solid var(--nha-highlight);
  outline-offset: 2px;
}

.photo-thumb-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: rgba(28, 75, 45, 0.05);
  overflow: hidden;
}

.photo-thumb-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.photo-filename {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  color: var(--nha-text);
  background: #ffffff;
  border-top: 1px solid rgba(28, 75, 45, 0.08);
}

.photo-sequence {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  background: rgba(28, 75, 45, 0.85);
  color: #ffffff;
  font-size: 0.75rem;
}

.photo-thumb-delete {
  display: flex;
  justify-content: flex-end;
}

.photo-thumb-delete .btn {
  font-size: 0.75rem;
  padding-inline: 0.75rem;
}

.empty-state {
  background: rgba(60, 146, 85, 0.08);
  border-radius: 1rem;
}

#photoModalImage {
  background: #000;
}

#photoModalCaption {
  font-weight: 600;
  color: var(--nha-text);
}

.modal-content {
  border-radius: 1rem;
  overflow: hidden;
}

.modal-footer {
  background: var(--nha-light);
}

.form-select:focus,
.form-control:focus,
.btn:focus,
.btn:active:focus,
.btn-link.nav-link:focus,
.form-check-input:focus {
  box-shadow: 0 0 0 0.15rem rgba(60, 146, 85, 0.35);
}