/* Courses page: map + layout (scoped) */

.courses-map-section {
  padding-bottom: var(--section-spacing, 3rem);
}

.courses-map-intro {
  margin-bottom: 1.25rem;
  max-width: 52rem;
}

.courses-map-intro .submission-text {
  margin-bottom: 0;
}

.courses-map {
  position: relative;
  width: 100%;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  background: var(--card-bg, rgba(0, 0, 0, 0.04));
}

.courses-map__frame {
  display: block;
  width: 100%;
  height: 0;
  padding-bottom: 56.25%;
  position: relative;
  border: 0;
}

.courses-map__frame iframe,
.courses-map__frame .courses-map__leaflet {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.courses-map__leaflet.leaflet-container {
  font-family: inherit;
  background: #e8eef2;
}

@media (min-width: 768px) {
  .courses-map__frame {
    padding-bottom: 45%;
    min-height: 320px;
  }
}

.courses-list-grid.submission-steps.roles-grid {
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .courses-list-grid.submission-steps.roles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .courses-list-grid.submission-steps.roles-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Course card photo (e.g. microscopy) */
.courses-list-grid .course-step-photo {
  margin: 0 0 1rem;
  border-radius: var(--radius-md, 12px);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--card-bg, rgba(0, 0, 0, 0.06));
}

.courses-list-grid .course-step-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

/* Course WhatsApp sign-up */
.courses-list-grid .step .course-signup-btn {
  margin-top: 1.25rem;
  width: 100%;
  max-width: 100%;
  padding: 0.75rem 1.25rem;
  font-size: 1rem;
}

.course-signup-overlay {
  position: fixed;
  inset: 0;
  z-index: 10001;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.course-signup-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.course-signup-modal {
  position: relative;
  width: 100%;
  max-width: 420px;
  padding: 1.75rem 1.5rem 1.5rem;
  background: var(--color-surface, #fff);
  border-radius: var(--radius-lg, 12px);
  box-shadow: var(--shadow-xl, 0 24px 48px rgba(0, 0, 0, 0.18));
  text-align: left;
  transform: translateY(12px) scale(0.98);
  transition: transform 0.25s ease;
}

.course-signup-overlay.is-open .course-signup-modal {
  transform: translateY(0) scale(1);
}

.course-signup-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: 2rem;
  height: 2rem;
  border: none;
  border-radius: 999px;
  background: var(--color-neutral-100, #f1f5f9);
  color: var(--color-text-muted, #64748b);
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.course-signup-close:hover {
  background: var(--color-neutral-200, #e2e8f0);
  color: var(--color-text, #1e293b);
}

.course-signup-heading {
  margin: 0 2rem 0.5rem 0;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text, #1e293b);
}

.course-signup-course-label {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary, #2563eb);
}

.course-signup-form {
  margin-top: 0.5rem;
}

.course-signup-field {
  margin-bottom: 1rem;
}

.course-signup-field label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text, #334155);
  margin-bottom: 0.35rem;
}

.course-signup-field input {
  width: 100%;
  box-sizing: border-box;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--color-border, rgba(15, 23, 42, 0.12));
  border-radius: var(--radius-md, 8px);
  font-size: 1rem;
  background: var(--color-surface-elevated, #fff);
  color: var(--color-text, #1e293b);
}

.course-signup-field input:focus {
  outline: 2px solid var(--color-primary, #2563eb);
  outline-offset: 2px;
}

.course-signup-hint {
  margin: 0 0 1rem;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--color-text-muted, #64748b);
}

.course-signup-error {
  margin: 0 0 0.75rem;
  font-size: 0.875rem;
  color: #b91c1c;
}

.course-signup-submit {
  width: 100%;
  margin-top: 0.25rem;
}

[data-theme="dark"] .course-signup-modal {
  background: var(--color-surface, #1e1e1e);
}

[data-theme="dark"] .course-signup-heading {
  color: var(--color-text, rgba(255, 255, 255, 0.92));
}

[data-theme="dark"] .course-signup-field label {
  color: rgba(226, 232, 240, 0.9);
}

[data-theme="dark"] .course-signup-field input {
  background: #262626;
  border-color: rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.92);
}

[data-theme="dark"] .course-signup-close {
  background: rgba(255, 255, 255, 0.08);
  color: rgba(226, 232, 240, 0.85);
}

[data-theme="dark"] .course-signup-close:hover {
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
}

[data-theme="dark"] .course-signup-hint {
  color: rgba(180, 180, 180, 0.9);
}

[data-theme="dark"] .course-signup-error {
  color: #fca5a5;
}