/* ============================================================
   COMPONENTS — nav, liquid glass cards, buttons, modal, footer
   ============================================================ */

/* ── Navigation ──────────────────────────────────────────── */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  z-index: 100;
  display: flex;
  align-items: center;
  padding: 0 var(--space-md);
  justify-content: space-between;
  background: rgba(8, 13, 24, 0.55);
  backdrop-filter: blur(52px) saturate(180%);
  -webkit-backdrop-filter: blur(52px) saturate(180%);
  /* top specular sheen on nav bar */
  box-shadow:
    inset 0 -1px 0 rgba(255, 255, 255, 0.08),
    0 1px 0 rgba(150, 200, 240, 0.12);
}

.nav-logo {
  font-family: var(--font-heading);
  font-weight: var(--weight-bold);
  font-size: 1.1rem;
  color: var(--color-text);
  letter-spacing: 0.02em;
  transition: color var(--duration-fast) var(--ease-default);
}
.nav-logo:hover { color: var(--color-accent); }

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--space-md);
  align-items: center;
}

.nav-links a {
  font-family: var(--font-heading);
  font-size: var(--size-small);
  font-weight: var(--weight-medium);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--ease-default);
}
.nav-links a:hover,
.nav-links a.active { color: var(--color-text); }

/* ── iOS 26 Liquid Glass Card ─────────────────────────────── */
/*                                                             */
/*  How it works:                                              */
/*  - backdrop-filter creates the blur + saturation boost      */
/*  - box-shadow layers simulate:                              */
/*      • top specular (the "sheen" that sells glass)          */
/*      • side edge highlights                                 */
/*      • drop shadow for elevation                            */
/*  - ::before adds the prismatic gradient shimmer inside      */
/*  - ::after adds the outer prismatic border glow             */
/*                                                             */

.glass-card {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
  box-shadow:
    /* top specular — the primary glass "sheen" */
    inset 0 1.5px 0 var(--glass-shine-strong),
    /* bottom inner edge */
    inset 0 -1px 0 var(--glass-shine-soft),
    /* left/right side lights */
    inset 1px 0 0 var(--glass-side-left),
    inset -1px 0 0 var(--glass-side-right),
    /* elevation shadow */
    0 16px 48px rgba(0, 0, 0, 0.45),
    0 4px 12px rgba(0, 0, 0, 0.28),
    /* outer ambient glow — icy blue */
    0 0 0 0.5px rgba(140, 195, 240, 0.1);
  transition:
    box-shadow var(--duration-normal) var(--ease-out),
    border-color var(--duration-normal) var(--ease-out),
    transform var(--duration-normal) var(--ease-spring);
  overflow: hidden;
}

/* Interior prismatic shimmer — diagonal light catch */
.glass-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.09) 0%,
    rgba(180, 220, 255, 0.04) 25%,
    transparent 50%,
    rgba(140, 195, 240, 0.03) 75%,
    rgba(255, 255, 255, 0.05) 100%
  );
  pointer-events: none;
  z-index: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
}

/* Prismatic border glow on hover */
.glass-card::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: conic-gradient(
    from 210deg,
    var(--prism-1),
    var(--prism-2),
    var(--prism-3),
    var(--prism-4),
    var(--prism-5),
    var(--prism-1)
  );
  /* Mask trick: only shows on the border, not the fill */
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  padding: 1px;
  opacity: 0;
  pointer-events: none;
  z-index: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.glass-card:hover {
  border-color: rgba(255, 255, 255, 0.22);
  transform: translateY(-4px);
  box-shadow:
    inset 0 1.5px 0 rgba(255, 255, 255, 0.55),
    inset 0 -1px 0 rgba(255, 255, 255, 0.1),
    inset 1px 0 0 rgba(255, 255, 255, 0.18),
    inset -1px 0 0 rgba(255, 255, 255, 0.06),
    0 24px 60px rgba(0, 0, 0, 0.5),
    0 8px 20px rgba(0, 0, 0, 0.3),
    0 0 0 0.5px rgba(140, 195, 240, 0.2);
}

.glass-card:hover::before {
  opacity: 1.5; /* brightens the inner shimmer on hover */
}

.glass-card:hover::after {
  opacity: 1; /* shows prismatic border on hover */
}

/* Ensure card content sits above the glass pseudo-elements */
.glass-card > * {
  position: relative;
  z-index: 1;
}

/* ── Project Card ─────────────────────────────────────────── */

.project-card {
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

/* Thumbnail wrapper — video hover happens here */
.project-card__thumbnail {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--color-surface-2);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  overflow: hidden;
  position: relative;
  flex-shrink: 0;
}

/* Static thumbnail image */
.project-card__thumbnail img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out),
              opacity var(--duration-normal) var(--ease-out);
  position: absolute;
  inset: 0;
}

/* ── Video-on-hover ───────────────────────────────────────── */
/* The <video> element sits on top of the image.              */
/* JS controls opacity: 0→1 on mouseenter, 1→0 on mouseleave  */

.project-card__video-preview {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
  pointer-events: none;
}

.project-card:hover .project-card__video-preview.playing {
  opacity: 1;
}

.project-card:hover .project-card__thumbnail img {
  opacity: 0;
  transform: scale(1.04);
}

/* Play badge */
.project-card__badge {
  position: absolute;
  bottom: var(--space-xs);
  right: var(--space-xs);
  background: rgba(8, 13, 24, 0.7);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-sm);
  padding: 3px 8px;
  font-family: var(--font-heading);
  font-size: 0.68rem;
  font-weight: var(--weight-medium);
  letter-spacing: 0.1em;
  color: var(--color-accent);
  text-transform: uppercase;
  z-index: 2;
  /* inner specular on badge */
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.2);
}

.project-card__body {
  padding: var(--space-sm) var(--space-sm) var(--space-md);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.project-card__title {
  font-size: 1rem;
  font-weight: var(--weight-bold);
  color: var(--color-text);
}

.project-card__desc {
  font-size: var(--size-small);
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
  flex: 1;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: var(--space-xs);
}

/* ── Tag pill ─────────────────────────────────────────────── */

.tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: var(--weight-medium);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  border: 1px solid rgba(106, 172, 206, 0.25);
  background: rgba(106, 172, 206, 0.06);
  /* tiny inner specular */
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
}

/* ── Buttons ──────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: var(--size-small);
  font-weight: var(--weight-medium);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  border: none;
  transition:
    background var(--duration-fast) var(--ease-default),
    color var(--duration-fast) var(--ease-default),
    transform var(--duration-fast) var(--ease-spring),
    box-shadow var(--duration-fast) var(--ease-default);
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
  box-shadow: 0 4px 16px rgba(106, 172, 206, 0.3),
              inset 0 1px 0 rgba(255,255,255,0.25);
}
.btn-primary:hover {
  background: #88c6e0;
  color: var(--color-bg);
  box-shadow: 0 6px 24px rgba(106, 172, 206, 0.45),
              inset 0 1px 0 rgba(255,255,255,0.3);
}

.btn-ghost {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  color: var(--color-text-muted);
  border: 1px solid var(--glass-border);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.18);
}
.btn-ghost:hover {
  color: var(--color-text);
  border-color: rgba(255,255,255,0.22);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.28),
              0 4px 16px rgba(0,0,0,0.2);
}

/* ── Category Filter Tabs ─────────────────────────────────── */

.filter-tabs {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
}

.filter-tab {
  padding: 0.5rem 1.2rem;
  border-radius: 999px;
  font-family: var(--font-heading);
  font-size: var(--size-small);
  font-weight: var(--weight-medium);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(190, 218, 240, 0.04);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  color: var(--color-text-muted);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.1);
  transition:
    background var(--duration-normal) var(--ease-out),
    color var(--duration-normal) var(--ease-out),
    border-color var(--duration-normal) var(--ease-out),
    box-shadow var(--duration-normal) var(--ease-out);
}
.filter-tab:hover {
  color: var(--color-text);
  border-color: rgba(255,255,255,0.2);
  box-shadow: inset 0 1.5px 0 rgba(255,255,255,0.25),
              0 4px 12px rgba(0,0,0,0.2);
}
.filter-tab.active {
  background: rgba(106, 172, 206, 0.14);
  color: var(--color-accent);
  border-color: rgba(106, 172, 206, 0.35);
  box-shadow: inset 0 1.5px 0 rgba(255,255,255,0.2),
              0 0 12px rgba(106,172,206,0.15);
}

/* ── Project Modal ────────────────────────────────────────── */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 8, 16, 0.78);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-out);
}
.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  width: 100%;
  max-width: 760px;
  max-height: 90vh;
  overflow-y: auto;
  border-radius: var(--radius-xl);
  transform: translateY(24px) scale(0.97);
  transition: transform var(--duration-normal) var(--ease-spring);
  /* modal is itself a liquid glass surface */
  background: rgba(15, 24, 36, 0.7);
  backdrop-filter: blur(52px) saturate(180%);
  -webkit-backdrop-filter: blur(52px) saturate(180%);
  border: 1px solid rgba(255,255,255,0.14);
  box-shadow:
    inset 0 1.5px 0 rgba(255,255,255,0.4),
    inset 0 -1px 0 rgba(255,255,255,0.06),
    0 32px 80px rgba(0,0,0,0.6),
    0 0 0 0.5px rgba(140,195,240,0.12);
}
.modal-overlay.open .modal {
  transform: translateY(0) scale(1);
}

.modal__video {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--color-surface);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  overflow: hidden;
}
.modal__video iframe,
.modal__video video {
  width: 100%; height: 100%;
  border: none;
  display: block;
}

.modal__body {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  background: none;
  border: none;
  box-shadow: none;
  backdrop-filter: none;
  border-radius: 0;
}
/* override glass-card on modal body since modal is already glass */
.modal__body.glass-card::before,
.modal__body.glass-card::after { display: none; }

.modal__title { font-size: var(--size-h3); }

.modal__desc {
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
}

.modal__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-xs);
}

.modal__close {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  background: rgba(8, 13, 24, 0.65);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 50%;
  width: 36px; height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-text-muted);
  font-size: 1rem;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.2);
  transition: color var(--duration-fast) var(--ease-default),
              background var(--duration-fast) var(--ease-default);
}
.modal__close:hover {
  color: var(--color-text);
  background: rgba(20, 35, 55, 0.8);
}

/* ── Social Feed Card ─────────────────────────────────────── */

.feed-card {
  cursor: pointer;
  text-decoration: none;
  display: block;
}

.feed-card__thumb {
  width: 100%;
  aspect-ratio: 1 / 1;
  background: var(--color-surface-2);
  overflow: hidden;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  position: relative;
}

.feed-card__thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}
.feed-card:hover .feed-card__thumb img {
  transform: scale(1.05);
}

.feed-card__source {
  position: absolute;
  top: var(--space-xs);
  left: var(--space-xs);
  font-family: var(--font-heading);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: rgba(8,13,24,0.7);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  padding: 2px 7px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.15);
}

.feed-card__body {
  padding: var(--space-xs) var(--space-sm) var(--space-sm);
}

.feed-card__title {
  font-size: var(--size-small);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ── Carousel ─────────────────────────────────────────────── */
/*                                                              */
/*  Structure:                                                  */
/*  .carousel                                                   */
/*    .carousel__btn--prev                                      */
/*    .carousel__track  ← your cards live here                 */
/*    .carousel__btn--next                                      */
/*    .carousel__dots                                           */
/*                                                              */
/*  Set --carousel-card-w on .carousel to control card width.  */

.carousel {
  position: relative;
  /* Pull the track to the page edge so peek is visible on sides */
  margin-inline: calc(-1 * var(--space-md));
}

.carousel__track {
  display: flex;
  overflow-x: scroll;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  scrollbar-width: none;
  gap: 1.25rem;
  align-items: flex-start;
  padding-block: 0.75rem 1rem;

  /* ── Centre-snap padding trick ─────────────────────────────
     padding = 50% of track width − half card width.
     This means the first and last cards can scroll all the way
     to the centre — not stuck at the left/right edge.         */
  padding-inline: calc(50% - var(--carousel-card-w, 340px) / 2);
}

.carousel__track::-webkit-scrollbar { display: none; }

/* Every direct child of the track is a carousel card */
.carousel__track > * {
  flex: 0 0 var(--carousel-card-w, 340px);
  width: var(--carousel-card-w, 340px);
  scroll-snap-align: center;
}

/* ── Dot indicators ────────────────────────────────────────── */

.carousel__dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding-block: 0.25rem 0;
}

.carousel__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  border: 1px solid var(--color-accent-dim);
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition:
    background      0.25s var(--ease-default),
    border-color    0.25s var(--ease-default),
    transform       0.25s var(--ease-spring);
}

.carousel__dot.active {
  background:    var(--color-accent);
  border-color:  var(--color-accent);
  transform:     scale(1.5);
}

/* ── Arrow buttons ─────────────────────────────────────────── */

.carousel__btn {
  position: absolute;
  top: calc(50% - 1.5rem);   /* vertically centred, adjusted for dots */
  transform: translateY(-50%);
  z-index: 2;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  color: var(--color-text-muted);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.18),
    0 4px 14px rgba(0,0,0,0.35);
  transition:
    color       0.2s var(--ease-default),
    background  0.2s var(--ease-default),
    transform   0.2s var(--ease-spring),
    box-shadow  0.2s var(--ease-default);
}

.carousel__btn:hover {
  color:      var(--color-text);
  background: rgba(106, 172, 206, 0.14);
  transform:  translateY(-50%) scale(1.1);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.28),
    0 6px 20px rgba(0,0,0,0.4);
}

.carousel__btn--prev { left:  0; }
.carousel__btn--next { right: 0; }

/* ── Responsive ────────────────────────────────────────────── */

@media (max-width: 768px) {
  /* Hide arrows — swipe is intuitive on touch */
  .carousel__btn { display: none; }

  /* Full-bleed track — no centre-snap padding on mobile */
  .carousel__track {
    padding-inline: var(--space-md);
  }

  /* Cards fill ~88% of the viewport so adjacent ones peek in */
  .carousel__track > * {
    flex: 0 0 88vw;
    width: 88vw;
  }
}

/* ── Section-specific card widths ──────────────────────────── */

.featured .carousel  { --carousel-card-w: 360px; }
.live-feed .carousel { --carousel-card-w: 270px; }

/* ── Infinite auto-scroll ribbon ──────────────────────────── */
/*                                                              */
/*  Applied by makeCarouselInfinite() in carousel.js.          */
/*  Cards are cloned (2× or 3× for small sets). The track      */
/*  animates translateX(0 → --carousel-loop-pct) continuously. */
/*  Hover or focus-within pauses the ribbon.                    */

.carousel--infinite {
  overflow: hidden;
}

.carousel--infinite .carousel__track {
  /* Switch off scroll-snap — animation drives movement */
  overflow: visible;
  scroll-snap-type: none;
  padding-inline: var(--space-md);

  /* Driven by JS-set custom properties */
  animation: carousel-scroll var(--carousel-duration, 30s) linear infinite;
  will-change: transform;
}

/* Pause when the user hovers or tabs into the ribbon */
.carousel--infinite .carousel__track:hover,
.carousel--infinite .carousel__track:focus-within {
  animation-play-state: paused;
}

/* Navigation controls are not needed for auto-scroll */
.carousel--infinite .carousel__btn,
.carousel--infinite .carousel__dots {
  display: none;
}

@keyframes carousel-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(var(--carousel-loop-pct, -50%)); }
}

/* ── Section divider ─────────────────────────────────────────  */

.section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    var(--glass-border) 30%,
    var(--glass-border) 70%,
    transparent
  );
  margin: var(--space-xl) 0;
}

/* ── Footer ──────────────────────────────────────────────── */

.footer {
  padding: var(--space-lg) 0 var(--space-md);
  border-top: 1px solid rgba(255,255,255,0.06);
  position: relative;
  z-index: 1;
}
.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  text-align: center;
}
.footer__socials {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm);
}
.footer__socials a {
  font-family: var(--font-heading);
  font-size: var(--size-small);
  font-weight: var(--weight-medium);
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  text-transform: uppercase;
  transition: color var(--duration-fast) var(--ease-default);
}
.footer__socials a:hover { color: var(--color-accent); }
.footer__copy {
  font-size: var(--size-small);
  color: var(--color-text-faint);
}

/* ── Scroll Indicator ────────────────────────────────────── */

.scroll-indicator {
  position: absolute;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--color-text-muted);
  font-family: var(--font-heading);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  animation: scrollBounce 2.4s ease-in-out infinite;
  z-index: 2;
}
.scroll-indicator::after {
  content: '';
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
}
@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(7px); }
}

/* ── Mobile ───────────────────────────────────────────────── */

@media (max-width: 640px) {
  .nav-links { gap: var(--space-sm); }
}