/* ===================================================
   Kalu Waterfall — Trek Page
=================================================== */

/* ---------------------------------------------------
   Banner (page hero)
--------------------------------------------------- */
.trek-banner {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  padding-top: var(--nav-height);
}

.trek-banner__media {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.trek-banner__video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(1.1) contrast(1.01) saturate(1);
}

.trek-banner__overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 90% at 50% 8%, rgba(5, 6, 5, 0.08) 0%, rgba(5, 6, 5, 0.38) 55%, rgba(5, 6, 5, 0.72) 100%),
    linear-gradient(180deg, rgba(5, 6, 5, 0.58) 0%, rgba(5, 6, 5, 0.1) 30%, rgba(5, 6, 5, 0.2) 58%, rgba(5, 6, 5, 0.75) 100%);
}

.trek-banner__content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  width: 100%;
  padding: 0 clamp(1.5rem, 6vw, 5rem) clamp(3rem, 8vh, 5rem);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  opacity: 0;
  transform: translateY(28px);
  animation: heroFadeUp 1.1s var(--ease-out) 0.3s forwards;
}

.trek-banner__crumb {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-white-faint);
  margin-bottom: 1.25rem;
  transition: color var(--transition-base);
}

.trek-banner__crumb:hover {
  color: var(--color-white);
}

.trek-banner__heading {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2.5rem, 6vw, 4.25rem);
  line-height: 1.1;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: 1.25rem;
}

.trek-banner__subheading {
  font-size: clamp(0.9rem, 1.1vw, 1rem);
  font-weight: 300;
  line-height: 1.7;
  color: var(--color-white-muted);
  max-width: 480px;
  margin-bottom: 2.25rem;
}

.trek-banner__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

/* Quick facts row */
.trek-stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1.5rem, 4vw, 3rem);
  list-style: none;
  padding: 1.5rem 0;
  margin-bottom: 2.25rem;
  border-top: 1px solid rgba(247, 246, 242, 0.14);
  border-bottom: 1px solid rgba(247, 246, 242, 0.14);
  width: 100%;
}

.trek-stats__item {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.trek-stats__label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-white-faint);
}

.trek-stats__value {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-white);
}

/* ---------------------------------------------------
   Generic content sections
--------------------------------------------------- */
.trek-section {
  position: relative;
  z-index: 1;
  padding: clamp(4rem, 10vh, 7rem) clamp(1.5rem, 6vw, 5rem);
}

.trek-section__inner {
  max-width: 1180px;
  margin: 0 auto;
}

.trek-section__inner--narrow {
  max-width: 680px;
}

.trek-section__eyebrow {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-forest-light);
  margin-bottom: 1rem;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.9);
}

.trek-section__heading {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.8rem, 3.6vw, 2.75rem);
  letter-spacing: 0.02em;
  color: var(--color-white);
  margin-bottom: 1.5rem;
  max-width: 720px;
  text-shadow: 0 4px 22px rgba(0, 0, 0, 0.85);
}

.trek-section__body {
  font-size: clamp(0.95rem, 1.1vw, 1.05rem);
  font-weight: 300;
  line-height: 1.85;
  color: var(--color-white-muted);
  max-width: 680px;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.9);
}

/* ---------------------------------------------------
   Photo grid (gallery)
--------------------------------------------------- */
.trek-section__body--gallery {
  margin-top: -0.75rem;
}

.photo-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 240px;
  gap: 0.85rem;
  margin-top: 2.75rem;
}

.photo-grid__item {
  position: relative;
  overflow: hidden;
  border-radius: 3px;
  box-shadow: 0 18px 40px -22px rgba(0, 0, 0, 0.7);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out),
    box-shadow var(--transition-base);
}

.photo-grid__item.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.photo-grid__item:hover {
  box-shadow: 0 22px 48px -20px rgba(0, 0, 0, 0.85);
}

.photo-grid__item--wide {
  grid-column: span 2;
  grid-row: span 2;
}

.photo-grid__item button {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  padding: 0;
  cursor: pointer;
}

.photo-grid__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease-out), filter 0.8s var(--ease-out);
  filter: brightness(1) saturate(1);
}

.photo-grid__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5, 6, 5, 0) 45%, rgba(5, 6, 5, 0.85) 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.photo-grid__index {
  position: absolute;
  top: 1rem;
  left: 1.1rem;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: rgba(247, 246, 242, 0.75);
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.photo-grid__caption {
  position: absolute;
  left: 1.1rem;
  right: 1.1rem;
  bottom: 1rem;
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--color-white);
  text-align: left;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.photo-grid__item button:hover img,
.photo-grid__item button:focus-visible img {
  transform: scale(1.06);
  filter: brightness(1) saturate(1);
}

.photo-grid__item button:hover .photo-grid__scrim,
.photo-grid__item button:focus-visible .photo-grid__scrim,
.photo-grid__item button:hover .photo-grid__index,
.photo-grid__item button:focus-visible .photo-grid__index,
.photo-grid__item button:hover .photo-grid__caption,
.photo-grid__item button:focus-visible .photo-grid__caption {
  opacity: 1;
  transform: translateY(0);
}

/* ---------------------------------------------------
   Lightbox
--------------------------------------------------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(5, 6, 5, 0.96);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.lightbox.is-open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox__figure {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  max-width: 88vw;
}

.lightbox__image {
  max-width: 88vw;
  max-height: 78vh;
  object-fit: contain;
  border-radius: 4px;
  opacity: 1;
  transition: opacity 0.2s var(--ease-out);
}

.lightbox__image.is-fading {
  opacity: 0;
}

.lightbox__caption {
  font-size: 0.85rem;
  font-weight: 300;
  letter-spacing: 0.03em;
  color: var(--color-white-muted);
  text-align: center;
}

.lightbox__count {
  position: absolute;
  bottom: clamp(1rem, 3vh, 2rem);
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--color-white-faint);
}

.lightbox__close {
  position: absolute;
  top: clamp(1rem, 3vh, 2rem);
  right: clamp(1rem, 3vw, 2.5rem);
  font-size: 2rem;
  line-height: 1;
  color: var(--color-white);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background-color var(--transition-base);
}

.lightbox__close:hover {
  background: rgba(247, 246, 242, 0.1);
}

.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 2.25rem;
  color: var(--color-white);
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background-color var(--transition-base);
}

.lightbox__nav:hover {
  background: rgba(247, 246, 242, 0.1);
}

.lightbox__nav--prev {
  left: clamp(0.5rem, 3vw, 2rem);
}

.lightbox__nav--next {
  right: clamp(0.5rem, 3vw, 2rem);
}

/* ---------------------------------------------------
   Point grid (Essentials / Safety)
--------------------------------------------------- */
.point-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1px;
  margin-top: 2.5rem;
  background: rgba(247, 246, 242, 0.1);
  border: 1px solid rgba(247, 246, 242, 0.1);
}

.point-card {
  padding: 2rem 1.75rem;
  transition: background-color var(--transition-base);
}

.point-card:hover {
  background-color: rgba(20, 33, 25, 0.4);
}

.point-card__index {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--color-white-faint);
  margin-bottom: 1.25rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.9);
}

.point-card__title {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-white);
  margin-bottom: 0.6rem;
  letter-spacing: 0.01em;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.9);
}

.point-card__text {
  font-size: 0.85rem;
  font-weight: 300;
  line-height: 1.6;
  color: var(--color-white-muted);
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.9);
}

/* ---------------------------------------------------
   Point list (Hazards)
--------------------------------------------------- */
.point-list {
  list-style: none;
  margin-top: 2.5rem;
  max-width: 780px;
}

.point-list__item {
  display: flex;
  gap: 1.25rem;
  padding: 1.75rem 0;
  border-top: 1px solid rgba(247, 246, 242, 0.1);
}

.point-list__item:last-child {
  border-bottom: 1px solid rgba(247, 246, 242, 0.1);
}

.point-list__mark {
  flex-shrink: 0;
  color: var(--color-forest-light);
  font-weight: 600;
}

.point-list__title {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-white);
  margin-bottom: 0.4rem;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.9);
}

.point-list__text {
  font-size: 0.88rem;
  font-weight: 300;
  line-height: 1.65;
  color: var(--color-white-muted);
  max-width: 560px;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.9);
}

/* ---------------------------------------------------
   Booking form
--------------------------------------------------- */

.booking-form {
  margin-top: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 480px;
}

.booking-form__field {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.booking-form__field label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-white-faint);
}

.booking-form__field input {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-white);
  background: rgba(247, 246, 242, 0.05);
  border: 1px solid rgba(247, 246, 242, 0.2);
  border-radius: 4px;
  padding: 0.9rem 1rem;
  transition: border-color var(--transition-base), background-color var(--transition-base);
}

.booking-form__field input::placeholder {
  color: var(--color-white-faint);
}

.booking-form__field input:focus-visible {
  outline: none;
  border-color: var(--color-forest-light);
  background: rgba(247, 246, 242, 0.08);
}

.booking-form__field input[aria-invalid="true"] {
  border-color: #c26a5a;
}

.booking-form__error {
  font-size: 0.78rem;
  color: #e08d7a;
  min-height: 1em;
}

.booking-form__submit {
  align-self: flex-start;
  margin-top: 0.5rem;
}

.booking-form__note {
  font-size: 0.85rem;
  color: var(--color-white-muted);
  min-height: 1.2em;
}

.booking-form__note[data-state="success"] {
  color: #8fd9b2;
}

.booking-form__note[data-state="error"] {
  color: #e08d7a;
}

/* ---------------------------------------------------
   Footer
--------------------------------------------------- */
.site-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid rgba(247, 246, 242, 0.1);
  padding: 2rem clamp(1.5rem, 6vw, 5rem);
}

.site-footer__inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.9);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-white-faint);
}

/* ---------------------------------------------------
   Responsive
--------------------------------------------------- */
@media (max-width: 720px) {
  .photo-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 160px;
  }

  .photo-grid__item--wide {
    grid-column: span 2;
    grid-row: span 1;
  }
}

@media (max-width: 640px) {
  .trek-banner__actions {
    flex-direction: column;
    width: 100%;
  }

  .trek-banner__actions .btn {
    width: 100%;
    justify-content: center;
  }

  .booking-form {
    max-width: 100%;
  }

  .booking-form__submit {
    width: 100%;
    justify-content: center;
  }
}

/* ---------------------------------------------------
   Payment modal
--------------------------------------------------- */
.payment-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  background: rgba(5, 6, 5, 0.92);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
  padding: 1.5rem;
  overflow-y: auto;
}

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

.payment-modal__panel {
  position: relative;
  max-width: 400px;
  width: 100%;
  margin: clamp(1.5rem, 6vh, 4rem) auto;
  transform: translateY(16px);
  transition: transform var(--transition-base);
}

.payment-modal.is-open .payment-modal__panel {
  transform: translateY(0);
}

.payment-modal__qr {
  width: 100%;
  border-radius: 10px;
  display: block;
  box-shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.8);
}

.payment-modal__close {
  position: absolute;
  top: -3rem;
  right: 0;
  font-size: 2rem;
  line-height: 1;
  color: var(--color-white);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background-color var(--transition-base);
}

.payment-modal__close:hover {
  background: rgba(247, 246, 242, 0.1);
}

.payment-modal__confirm {
  margin-top: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(247, 246, 242, 0.14);
}

.payment-modal__confirm-label {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-white);
  margin-bottom: 0.5rem;
}

.payment-modal__confirm-hint {
  font-size: 0.8rem;
  font-weight: 300;
  line-height: 1.6;
  color: var(--color-white-faint);
  margin-bottom: 1.5rem;
}

.payment-modal .booking-form {
  margin-top: 0;
  max-width: 100%;
  gap: 1.1rem;
}

.payment-modal .booking-form__submit {
  width: 100%;
  justify-content: center;
}