/* ==========================================================================
   main.css — base layout, typography, sections
   ========================================================================== */

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

/* smooth scroll for in-page anchors (nav -> section jumps) */
html {
  scroll-behavior: smooth;
}

section[id] {
  scroll-margin-top: calc(var(--nav-height) + var(--space-4));
}

/* page-level state machine on <body> — initial is the brief intro (locked
   to viewport), revealed makes the page scrollable. */
body.page--initial {
  overflow: hidden;
  height: 100vh;
}

body.page--revealed {
  overflow-y: auto;
  overflow-x: hidden;
  height: auto;
}

/* ----- Container ----- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 4vw, var(--space-7));
}

/* ----- Section base ----- */
.section {
  padding-block: clamp(var(--space-8), 12vw, var(--space-10));
  position: relative;
  z-index: var(--z-content);
}

.section--intro {
  background: linear-gradient(180deg, transparent 0%, var(--color-bg-alt) 100%);
}

.section__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  color: var(--color-accent-1);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.section__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-h1);
  line-height: 1.1;
  margin-bottom: var(--space-5);
  letter-spacing: -0.01em;
}

.section__body {
  max-width: 720px;
  color: var(--color-text-soft);
  font-size: 1.1rem;
  line-height: 1.7;
}

/* ----- Category grid (6 directions on main page) ----- */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-5);
  margin-top: var(--space-7);
}

.category-item {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-line);
  border-radius: var(--r-md);
  background: rgba(10, 20, 40, 0.45);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  position: relative;
  transition:
    border-color var(--dur-base) var(--ease-out),
    transform var(--dur-base) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out);
}

.category-item:hover {
  border-color: var(--color-accent-1);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(232, 180, 92, 0.12);
}

.category-item__media {
  position: relative;
  aspect-ratio: 16 / 9;
  background:
    radial-gradient(ellipse at top left, rgba(232, 180, 92, 0.12), transparent 50%),
    radial-gradient(ellipse at bottom right, rgba(184, 168, 224, 0.10), transparent 50%),
    rgba(5, 8, 19, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--color-line);
  overflow: hidden;
}

.category-item__placeholder {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  color: var(--color-text-mute);
  text-transform: uppercase;
  opacity: 0.7;
}

/* Image variant — actual <img> filling the media area */
.category-item__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 600ms var(--ease-out),
              filter 600ms var(--ease-out);
  filter: brightness(0.92) saturate(0.95);
}

.category-item:hover .category-item__image {
  transform: scale(1.06);
  filter: brightness(1) saturate(1);
}

.category-item--image .category-item__media {
  background: var(--color-bg);
}

/* Make render-image cards feel clickable */
.category-item--image {
  cursor: zoom-in;
}

.category-item--image .category-item__media::after {
  content: '⤢  View';
  position: absolute;
  inset: auto var(--space-3) var(--space-3) auto;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--color-text);
  background: rgba(5, 8, 19, 0.6);
  padding: 6px 10px;
  border-radius: var(--r-sm);
  border: 1px solid var(--color-line);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out);
  pointer-events: none;
  backdrop-filter: blur(6px);
}

.category-item--image:hover .category-item__media::after,
.category-item--image:focus-visible .category-item__media::after {
  opacity: 1;
  transform: translateY(0);
}

/* ----- Project group (sub-section inside a section) ----- */
.project-group + .project-group {
  margin-top: var(--space-8);
}

.project-group__title {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 1.8vw, 1.5rem);
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 var(--space-5);
  letter-spacing: 0.01em;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.project-group__title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(to right,
    var(--color-line) 0%,
    var(--color-line) 60%,
    transparent 100%);
  opacity: 0.7;
}

/* ----- Video card (used inside project groups) ----- */
.category-item--video {
  cursor: pointer;
}

.category-item--video .category-item__media {
  background:
    radial-gradient(ellipse at center, rgba(232, 180, 92, 0.10), transparent 60%),
    var(--color-bg);
  position: relative;
  overflow: hidden;
}

.category-item--video .category-item__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
  filter: brightness(0.85) saturate(0.9);
  transition: opacity 600ms var(--ease-out),
              filter 600ms var(--ease-out);
  pointer-events: none;
}

.category-item--video:hover .category-item__video,
.category-item--video:focus-visible .category-item__video {
  opacity: 0.75;
  filter: brightness(1) saturate(1);
}

.category-item__play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 64px;
  height: 64px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(232, 180, 92, 0.92);
  color: var(--color-bg);
  border-radius: var(--r-pill);
  font-size: 1.4rem;
  line-height: 1;
  padding-left: 4px; /* visually centre the triangle */
  box-shadow: 0 8px 24px rgba(232, 180, 92, 0.35),
              0 0 0 6px rgba(232, 180, 92, 0.12);
  transition: transform var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out);
  pointer-events: none;
}

.category-item--video:hover .category-item__play,
.category-item--video:focus-visible .category-item__play {
  transform: translate(-50%, -50%) scale(1.08);
  box-shadow: 0 12px 32px rgba(232, 180, 92, 0.5),
              0 0 0 10px rgba(232, 180, 92, 0.18);
}

.category-item--video .category-item__media::after {
  content: '▸  Play';
  position: absolute;
  inset: auto var(--space-3) var(--space-3) auto;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--color-text);
  background: rgba(5, 8, 19, 0.6);
  padding: 6px 10px;
  border-radius: var(--r-sm);
  border: 1px solid var(--color-line);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out);
  pointer-events: none;
  backdrop-filter: blur(6px);
}

.category-item--video:hover .category-item__media::after,
.category-item--video:focus-visible .category-item__media::after {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 767px) {
  .category-item__play {
    width: 52px;
    height: 52px;
    font-size: 1.1rem;
  }
}

.category-item__body {
  padding: var(--space-5);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  position: relative;
}

.category-item__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
  letter-spacing: -0.005em;
}

.category-item__meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-text-mute);
  letter-spacing: 0.05em;
  margin: 0;
}

/* Link variant — shows arrow indicator on hover */
a.category-item .category-item__body::after {
  content: '→';
  position: absolute;
  right: var(--space-5);
  bottom: var(--space-5);
  color: var(--color-text-mute);
  font-size: 1.2rem;
  line-height: 1;
  transition:
    color var(--dur-base) var(--ease-out),
    transform var(--dur-base) var(--ease-out);
}

a.category-item:hover .category-item__body::after {
  color: var(--color-accent-1);
  transform: translateX(4px);
}

/* ----- Section alt background (alternating rhythm) ----- */
.section--alt {
  background: linear-gradient(180deg,
    transparent 0%,
    rgba(10, 20, 40, 0.5) 50%,
    transparent 100%);
}

/* ----- Plan timeline (Roadmap section) ----- */
.plan-timeline {
  list-style: none;
  padding: 0;
  margin: var(--space-7) 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-5);
  counter-reset: plan-step;
}

.plan-timeline__item {
  position: relative;
  padding: var(--space-6);
  border: 1px solid var(--color-line);
  border-radius: var(--r-md);
  background: rgba(10, 20, 40, 0.45);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  counter-increment: plan-step;
  transition:
    border-color var(--dur-base) var(--ease-out),
    transform var(--dur-base) var(--ease-out);
}

.plan-timeline__item::before {
  content: counter(plan-step, decimal-leading-zero);
  position: absolute;
  top: var(--space-4);
  right: var(--space-5);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--color-text-mute);
  opacity: 0.4;
}

.plan-timeline__item:hover {
  border-color: var(--color-accent-1);
  transform: translateY(-2px);
}

.plan-timeline__period {
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1;
  color: var(--color-accent-1);
  letter-spacing: 0.02em;
  text-shadow: 0 0 24px rgba(232, 180, 92, 0.25);
}

.plan-timeline__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
}

.plan-timeline__body {
  color: var(--color-text-mute);
  font-size: 0.95rem;
  line-height: 1.55;
  margin: 0;
}

/* ----- Footer ----- */
.site-footer {
  padding-block: var(--space-7);
  border-top: 1px solid var(--color-line);
  text-align: center;
  position: relative;
  z-index: var(--z-content);
}

.site-footer__tagline {
  font-family: var(--font-display);
  color: var(--color-accent-4);
  margin-bottom: var(--space-3);
  font-size: var(--fs-small);
  letter-spacing: 0.1em;
  text-shadow: 0 0 18px rgba(127, 184, 232, 0.28);
}

.site-footer__copyright {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-mute);
  opacity: 0.7;
}

/* ----- Content reveal ----- */
.site-content {
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-slow) var(--ease-out) 200ms;
}

body.page--revealed .site-content {
  opacity: 1;
  pointer-events: auto;
}

/* ----- Scroll reveal animation ----- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--dur-slow) var(--ease-out),
              transform var(--dur-slow) var(--ease-out);
}

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

/* ----- Section CTA (used by sections without a card grid, e.g. Photography) ----- */
.section__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-5);
  padding: var(--space-4) var(--space-6);
  background: rgba(232, 180, 92, 0.08);
  border: 1px solid rgba(232, 180, 92, 0.30);
  border-radius: var(--r-md);
  color: var(--color-accent-1);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1rem;
  letter-spacing: 0.02em;
  transition: background var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out);
}

.section__cta:hover,
.section__cta:focus-visible {
  background: rgba(232, 180, 92, 0.18);
  border-color: var(--color-accent-1);
  transform: translateY(-2px);
  outline: none;
}

.section__cta-arrow {
  display: inline-block;
  transition: transform var(--dur-base) var(--ease-out);
}

.section__cta:hover .section__cta-arrow,
.section__cta:focus-visible .section__cta-arrow {
  transform: translateX(4px);
}

/* ----- Utilities ----- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   Lightbox — fullscreen image preview (used by .category-item--image)
   Click any render card to open; ←/→ to navigate, Esc to close.
   ========================================================================== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: var(--z-lightbox);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  background: rgba(3, 5, 12, 0.94);
  backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-slow) var(--ease-out),
              visibility 0s linear var(--dur-slow);
  pointer-events: none;
}

.lightbox.is-open {
  opacity: 1;
  visibility: visible;
  transition: opacity var(--dur-slow) var(--ease-out),
              visibility 0s linear 0s;
  pointer-events: auto;
}

.lightbox__figure {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  max-width: min(1800px, 96vw);
  max-height: 92vh;
  margin: 0;
  transform: scale(0.96);
  transition: transform var(--dur-slow) var(--ease-out);
}

.lightbox.is-open .lightbox__figure {
  transform: scale(1);
}

.lightbox__image {
  max-width: 100%;
  max-height: 78vh;
  object-fit: contain;
  display: block;
  border-radius: var(--r-md);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6),
              0 0 0 1px rgba(184, 168, 224, 0.08);
  background: var(--color-bg);
}

.lightbox__video {
  max-width: 100%;
  max-height: 78vh;
  display: none;            /* forward-compat self-hosted <video>; not used today */
  border-radius: var(--r-md);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6),
              0 0 0 1px rgba(184, 168, 224, 0.08);
  background: #000;
}

/* YouTube iframe — sized to a 16:9 box that fits inside both viewport axes.
   Without an explicit width/height the browser falls back to 300x150, which
   is what we were getting before. */
.lightbox__iframe {
  width: min(96vw, 78vh * 16 / 9, 1800px);
  aspect-ratio: 16 / 9;
  display: none;
  border: 0;
  border-radius: var(--r-md);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6),
              0 0 0 1px rgba(184, 168, 224, 0.08);
  background: #000;
}

/* Belt-and-suspenders: keep the iframe off-screen even if a stale cached
   stylesheet somehow misses the `display: none` rule above. The element
   only re-enters the layout when .lightbox.is-video is applied, which
   clears both classes via JS before setting the iframe src. */
.lightbox:not(.is-video) .lightbox__iframe {
  visibility: hidden;
  pointer-events: none;
}

.lightbox.is-video .lightbox__image { display: none; }
.lightbox.is-video .lightbox__video { display: none; }
.lightbox.is-video .lightbox__iframe {
  display: block;
  visibility: visible;
}

.lightbox__caption {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.lightbox__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: 0.02em;
}

.lightbox__meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-text-mute);
  letter-spacing: 0.08em;
}

.lightbox__counter {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-text-mute);
  letter-spacing: 0.25em;
  margin-top: 2px;
  opacity: 0.8;
}

/* ----- Buttons (close, prev, next) ----- */
.lightbox__btn {
  position: absolute;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: rgba(232, 238, 247, 0.06);
  color: var(--color-text);
  border: 1px solid rgba(232, 238, 247, 0.12);
  border-radius: var(--r-pill);
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 1.4rem;
  line-height: 1;
  transition: background var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out);
  backdrop-filter: blur(8px);
  z-index: 1;
}

.lightbox__btn:hover,
.lightbox__btn:focus-visible {
  background: rgba(232, 238, 247, 0.12);
  border-color: var(--color-accent-1);
  outline: none;
  transform: scale(1.05);
}

.lightbox__close {
  top: var(--space-5);
  right: var(--space-5);
}

.lightbox__nav {
  top: 50%;
  transform: translateY(-50%);
}

.lightbox__nav:hover,
.lightbox__nav:focus-visible {
  transform: translateY(-50%) scale(1.05);
}

.lightbox__nav--prev { left: var(--space-5); }
.lightbox__nav--next { right: var(--space-5); }

/* Lock body scroll when lightbox is open */
body.lightbox-open {
  overflow: hidden;
}

/* Mobile tweaks */
@media (max-width: 767px) {
  .lightbox {
    padding: var(--space-4);
  }
  .lightbox__image {
    max-height: 70vh;
  }
  .lightbox__btn {
    width: 38px;
    height: 38px;
    font-size: 1.2rem;
  }
  .lightbox__close {
    top: var(--space-3);
    right: var(--space-3);
  }
  .lightbox__nav--prev { left: var(--space-2); }
  .lightbox__nav--next { right: var(--space-2); }
}

/* Honor reduced motion */
@media (prefers-reduced-motion: reduce) {
  .lightbox,
  .lightbox__figure,
  .lightbox__btn,
  .category-item--image .category-item__media::after {
    transition: none;
  }
}

/* ==========================================================================
   Back to top — fixed bottom-right, shown when scrolled past the hero
   (uses the same body.is-scrolled class as the hero scroll-hint).
   ========================================================================== */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-pill);
  background: rgba(232, 180, 92, 0.14);
  border: 1px solid rgba(232, 180, 92, 0.35);
  color: var(--color-accent-1);
  cursor: pointer;
  z-index: 35;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 400ms var(--ease-out),
              transform 400ms var(--ease-out),
              background 200ms var(--ease-out);
}

body.is-scrolled .back-to-top {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover,
.back-to-top:focus-visible {
  background: rgba(232, 180, 92, 0.28);
  transform: translateY(0) scale(1.06);
  outline: none;
}

@media (max-width: 767px) {
  .back-to-top {
    bottom: var(--space-4);
    right: var(--space-4);
    width: 40px;
    height: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .back-to-top {
    transition: opacity 200ms;
  }
}
