/* =================================================================
   JACKSON MUNO — ARCHITECTURAL PORTFOLIO
   Black & white · editorial · minimal
   -----------------------------------------------------------------
   Sections
     0. Variables & Reset
     1. Custom cursor
     2. Hero / intro (typewriter + signature)
     3. Navigation
     4. Content reveal mechanics
     5. About
     6. Projects (horizontal gallery)
     7. Project sections
     8. Footer
     9. Decorative grid
    10. Responsive
    11. Reduced-motion
   ================================================================= */

/* ---------------------------------------------------------------- */
/* 0. VARIABLES & RESET                                             */
/* ---------------------------------------------------------------- */
:root {
  /* Palette — strictly black & white / grayscale */
  --c-bg: #ffffff;
  --c-ink: #111111;
  --c-ink-soft: #5a5a5a;
  --c-ink-faint: #9a9a9a;
  --c-line: #e3e3e3;
  --c-line-strong: #cdcdcd;
  --c-paper: #f6f5f3; /* warm off-white for drawing panels */

  /* Typography */
  --font-sans: "Inter", "Helvetica Neue", Arial, system-ui, sans-serif;
  --font-hand: "Caveat", "Comic Sans MS", "Segoe Script", cursive;

  /* Fluid type scale */
  --fs-hero: clamp(3rem, 12vw, 11rem);
  --fs-display: clamp(2.5rem, 8vw, 7rem);
  --fs-bignum: clamp(7rem, 26vw, 24rem);
  --fs-h2: clamp(2rem, 5vw, 4.5rem);
  --fs-lead: clamp(1.4rem, 2.6vw, 2.4rem);
  --fs-body: clamp(1rem, 1.3vw, 1.2rem);
  --fs-small: 0.78rem;

  /* Spacing & rhythm */
  --space-section: clamp(6rem, 14vw, 14rem);
  --gutter: clamp(1.5rem, 5vw, 6rem);
  --maxw: 1500px;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);
  --dur: 1.1s;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  background: var(--c-bg);
  color: var(--c-ink);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.6;
  font-weight: 400;
  overflow-x: hidden;
}

/* While the intro plays, the page is locked at the top */
body.intro-lock {
  overflow: hidden;
  height: 100vh;
}

img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  /* Force the grayscale editorial aesthetic on every image */
  filter: grayscale(100%) contrast(1.02);
}

a {
  color: inherit;
  text-decoration: none;
}

::selection {
  background: var(--c-ink);
  color: var(--c-bg);
}

.section-label {
  display: inline-block;
  font-size: var(--fs-small);
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--c-ink-soft);
  font-family: var(--font-sans);
}

/* Thin animated divider line */
.divider {
  display: block;
  height: 1px;
  width: 100%;
  background: var(--c-line-strong);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 1.4s var(--ease);
}
.divider.is-in {
  transform: scaleX(1);
}

/* ---------------------------------------------------------------- */
/* 1. CUSTOM PENCIL CURSOR                                          */
/* ---------------------------------------------------------------- */
.cursor,
.cursor-trail {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 9999;
}

.cursor {
  width: 24px;
  height: 24px;
  transform: translate(-2px, -22px); /* tip aligns to true pointer */
  transition: opacity 0.3s, scale 0.2s var(--ease-soft);
  will-change: transform;
  mix-blend-mode: difference; /* reads on dark imagery too */
}
.cursor__pencil path { stroke: #fff; }
.cursor.is-hover { scale: 1.5; }
.cursor.is-hidden { opacity: 0; }

.cursor-trail {
  width: 100vw;
  height: 100vh;
  z-index: 9998;
  opacity: 0.5;
}

/* Hide native cursor only on devices that actually have a precise pointer */
@media (hover: hover) and (pointer: fine) {
  body,
  a,
  .card { cursor: none; }
}

/* ---------------------------------------------------------------- */
/* 2. HERO / INTRO                                                  */
/* ---------------------------------------------------------------- */
.hero {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  background: var(--c-bg);
  padding: var(--gutter);
  transition: transform 1.5s var(--ease), opacity 1.2s var(--ease);
  will-change: transform, opacity;
}
/* After the intro the whole hero slides up and out, revealing the page */
.hero.is-lifted {
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
}

.hero__inner {
  text-align: center;
  position: relative;
  z-index: 2;
}

.hero__eyebrow {
  font-size: var(--fs-small);
  letter-spacing: 0.45em;
  text-transform: uppercase;
  color: var(--c-ink-faint);
  margin-bottom: clamp(1rem, 3vw, 2.4rem);
}

.hero__title {
  font-size: var(--fs-hero);
  font-weight: 300;
  line-height: 0.95;
  letter-spacing: -0.01em;
  display: inline-flex;
  align-items: baseline;
  justify-content: center;
  min-height: 1em;
}
.hero__title-text { white-space: nowrap; }

/* Blinking typewriter caret */
.hero__caret {
  display: inline-block;
  width: 2px;
  height: 0.9em;
  margin-left: 0.06em;
  background: var(--c-ink);
  animation: caret-blink 0.9s steps(1) infinite;
}
.hero__caret.is-done { animation: none; opacity: 0; }
@keyframes caret-blink { 50% { opacity: 0; } }

.hero__subtitle {
  font-size: var(--fs-lead);
  font-style: italic;
  font-weight: 300;
  color: var(--c-ink-soft);
  margin-top: clamp(0.6rem, 1.6vw, 1.2rem);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 1s var(--ease), transform 1s var(--ease);
}
.hero__subtitle.is-in { opacity: 1; transform: none; }

/* --- Handwritten signature --- */
.signature {
  position: relative;
  display: inline-block;
  margin-top: clamp(1rem, 3vw, 2.2rem);
  /* Revealed left→right via clip-path by JS toggling .is-signing */
  clip-path: inset(0 100% 0 0);
}
.signature.is-signing {
  animation: sign 2.4s var(--ease-soft) forwards;
}
@keyframes sign { to { clip-path: inset(0 0 0 0); } }

.signature__ink {
  font-family: var(--font-hand);
  font-size: clamp(3rem, 9vw, 6rem);
  font-weight: 600;
  line-height: 1;
  color: var(--c-ink);
  display: inline-block;
  /* slight tilt for a quick, scribbled signature feel */
  transform: rotate(-3deg);
}
/* The faux "pen" dot that travels along the signature */
.signature__pen {
  position: absolute;
  top: 50%;
  right: 100%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-ink);
  opacity: 0;
}
.signature.is-signing .signature__pen {
  animation: pen-travel 2.4s var(--ease-soft) forwards;
}
@keyframes pen-travel {
  0%   { opacity: 1; right: 100%; }
  92%  { opacity: 1; right: 0%; }
  100% { opacity: 0; right: 0%; }
}

.hero__scroll-hint {
  position: absolute;
  bottom: calc(-1 * clamp(3rem, 8vh, 6rem));
  left: 50%;
  transform: translateX(-50%);
  font-size: var(--fs-small);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-ink-faint);
  opacity: 0;
  transition: opacity 1s var(--ease) 0.4s;
}
.hero__scroll-hint::after {
  content: "";
  display: block;
  width: 1px;
  height: 2.4rem;
  margin: 0.8rem auto 0;
  background: var(--c-line-strong);
  animation: scroll-pulse 2s var(--ease-soft) infinite;
}
.hero__scroll-hint.is-in { opacity: 1; }
@keyframes scroll-pulse {
  0%, 100% { transform: scaleY(0.4); opacity: 0.4; transform-origin: top; }
  50%      { transform: scaleY(1);   opacity: 1;   transform-origin: top; }
}

/* Thin architectural corner ticks framing the hero */
.hero__corner {
  position: absolute;
  width: 42px;
  height: 42px;
  border: 1px solid var(--c-line-strong);
  opacity: 0;
  transition: opacity 1s var(--ease) 0.2s;
}
.hero.is-framed .hero__corner { opacity: 1; }
.hero__corner--tl { top: 4vh;    left: 4vw;    border-right: 0; border-bottom: 0; }
.hero__corner--tr { top: 4vh;    right: 4vw;   border-left: 0;  border-bottom: 0; }
.hero__corner--bl { bottom: 4vh; left: 4vw;    border-right: 0; border-top: 0; }
.hero__corner--br { bottom: 4vh; right: 4vw;   border-left: 0;  border-top: 0; }

/* ---------------------------------------------------------------- */
/* 3. NAVIGATION                                                    */
/* ---------------------------------------------------------------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 900;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.4rem var(--gutter);
  mix-blend-mode: difference;
  color: #fff;
  opacity: 0;
  transform: translateY(-100%);
  transition: opacity 0.8s var(--ease) 0.2s, transform 0.8s var(--ease) 0.2s;
}
.nav.is-in { opacity: 1; transform: none; }

.nav__brand {
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  font-weight: 500;
}
.nav__links {
  list-style: none;
  display: flex;
  gap: clamp(1rem, 3vw, 2.8rem);
}
.nav__links a {
  font-size: var(--fs-small);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  position: relative;
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.5s var(--ease);
}
.nav__links a:hover::after { transform: scaleX(1); transform-origin: left; }

/* ---------------------------------------------------------------- */
/* 4. CONTENT REVEAL MECHANICS                                      */
/* ---------------------------------------------------------------- */
.content {
  position: relative;
  z-index: 1;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* Generic fade-up reveal (IntersectionObserver toggles .is-in) */
.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

/* Animated line reveal */
.reveal-line { /* same as .divider, animated when .is-in added */ }

/* Image reveal — a panel wipes away to expose the photo */
.reveal-img {
  position: relative;
  overflow: hidden;
}
.reveal-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--c-bg);
  transform: scaleX(1);
  transform-origin: right;
  transition: transform 1.1s var(--ease);
  z-index: 2;
}
.reveal-img.is-in::after { transform: scaleX(0); }
.reveal-img img {
  transform: scale(1.12);
  transition: transform 1.6s var(--ease);
}
.reveal-img.is-in img { transform: scale(1); }

/* ---------------------------------------------------------------- */
/* 5. ABOUT                                                         */
/* ---------------------------------------------------------------- */
.about {
  display: grid;
  grid-template-columns: 1fr 2.4fr;
  gap: var(--gutter);
  padding-top: var(--space-section);
  padding-bottom: var(--space-section);
}
.about__index { position: relative; }
.about__lead {
  font-size: var(--fs-lead);
  font-weight: 300;
  line-height: 1.25;
  max-width: 22ch;
  margin-bottom: 1.8rem;
}
.about__text {
  font-size: var(--fs-body);
  color: var(--c-ink-soft);
  max-width: 56ch;
  margin-bottom: clamp(2rem, 5vw, 4rem);
}

/* ---------------------------------------------------------------- */
/* 6. PROJECTS — HORIZONTAL GALLERY                                 */
/* ---------------------------------------------------------------- */
.projects {
  padding-block: var(--space-section);
  /* break out of the centred content column to go full-bleed */
  width: 100vw;
  position: relative;
  left: 50%;
  transform: translateX(-50%);
  padding-inline: var(--gutter);
}
.projects__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: clamp(2rem, 5vw, 4rem);
}
.projects__title {
  font-size: var(--fs-h2);
  font-weight: 300;
  letter-spacing: -0.01em;
}
.projects__hint {
  font-size: var(--fs-small);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--c-ink-faint);
}

.gallery {
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;          /* Firefox */
  cursor: grab;
  -webkit-overflow-scrolling: touch;
}
.gallery::-webkit-scrollbar { display: none; }
.gallery.is-dragging { cursor: grabbing; }

.gallery__track {
  display: flex;
  gap: clamp(1.4rem, 3vw, 3rem);
  width: max-content;
  padding: 1rem 0 2rem;
}

.card {
  flex: 0 0 auto;
  width: clamp(260px, 30vw, 440px);
  /* staggered horizontal entrance — JS sets --i on each card */
  opacity: 0;
  transform: translateX(60px);
  transition: opacity 1s var(--ease), transform 1s var(--ease);
  transition-delay: calc(var(--i, 0) * 90ms);
}
.card.is-in { opacity: 1; transform: none; }

.card__media {
  position: relative;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--c-paper);
}
.card__media img {
  transition: transform 1.2s var(--ease), filter 0.8s var(--ease);
}
.card:hover .card__media img {
  transform: scale(1.06);
  filter: grayscale(100%) contrast(1.08) brightness(0.96);
}

/* Linework overlay that appears on hover */
.card__lines {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.6s var(--ease);
  background-image:
    linear-gradient(to right,  rgba(255,255,255,0.35) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.35) 1px, transparent 1px);
  background-size: 40px 40px;
  mix-blend-mode: overlay;
}
.card__lines::before,
.card__lines::after {
  content: "";
  position: absolute;
  background: rgba(255,255,255,0.6);
}
/* diagonal survey lines */
.card__lines::before { inset: 18px; border: 1px solid rgba(255,255,255,0.6); background: transparent; }
.card__lines::after  { left: 18px; right: 18px; top: 50%; height: 1px; }
.card:hover .card__lines { opacity: 1; }

.card__meta {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 1rem;
  align-items: baseline;
  padding-top: 1.1rem;
}
.card__num {
  grid-row: span 3;
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  font-weight: 300;
  line-height: 0.8;
  color: var(--c-ink);
}
.card__title {
  font-size: 1.35rem;
  font-weight: 500;
  line-height: 1.1;
}
.card__cat,
.card__loc {
  font-size: var(--fs-small);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-ink-faint);
}

/* On-brand placeholder shown by JS when an /assets image is missing */
.img-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  text-align: center;
  padding: 1rem;
  background: var(--c-paper);
  background-image:
    linear-gradient(to right,  var(--c-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--c-line) 1px, transparent 1px);
  background-size: 32px 32px;
}
.img-placeholder__num {
  font-size: clamp(2.6rem, 7vw, 5rem);
  font-weight: 300;
  line-height: 0.85;
  color: transparent;
  -webkit-text-stroke: 1px var(--c-line-strong);
}
.img-placeholder__label {
  font-size: var(--fs-small);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-ink-soft);
}
.img-placeholder__note {
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-ink-faint);
  font-family: var(--font-sans);
}

/* ---------------------------------------------------------------- */
/* 7. PROJECT SECTIONS                                              */
/* ---------------------------------------------------------------- */
.project {
  position: relative;
  padding-block: var(--space-section);
  border-top: 1px solid var(--c-line);
}

/* Oversized ghost number */
.project__bignum {
  display: block;
  font-size: var(--fs-bignum);
  font-weight: 300;
  line-height: 0.8;
  color: var(--c-paper);
  letter-spacing: -0.04em;
  pointer-events: none;
  margin-bottom: -0.18em;
  position: relative;
  z-index: 0;
  /* outline-style ghost number reads better than solid fill */
  -webkit-text-stroke: 1px var(--c-line-strong);
  color: transparent;
}

.project__header {
  position: relative;
  z-index: 1;
  max-width: 760px;
}
.project__title {
  font-size: var(--fs-display);
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.015em;
  margin-bottom: 1.6rem;
}
.project__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 2rem;
  font-size: var(--fs-small);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-ink-soft);
  margin-bottom: 1.6rem;
}
.project__desc {
  font-size: var(--fs-lead);
  font-weight: 300;
  color: var(--c-ink-soft);
  line-height: 1.35;
  margin-bottom: 2.4rem;
}

/* Image + drawing grid */
.project__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1rem, 2.5vw, 2.4rem);
  margin-top: clamp(2rem, 6vw, 5rem);
}
.project__img {
  aspect-ratio: 4 / 3;
  background: var(--c-paper);
}
.project__img--tall {
  grid-row: span 2;
  aspect-ratio: 3 / 4;
}
.project__grid--sketch {
  grid-template-columns: repeat(4, 1fr);
}
.project__grid--sketch .project__img { aspect-ratio: 3 / 4; }

/* Technical drawing placeholder panel */
.project__drawing {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--c-paper);
  border: 1px solid var(--c-line-strong);
  display: grid;
  place-items: center;
  overflow: hidden;
}
.project__drawing-label {
  position: relative;
  z-index: 1;
  font-size: var(--fs-small);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--c-ink-faint);
  background: var(--c-paper);
  padding: 0.4rem 0.8rem;
}
.project__drawing-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right,  var(--c-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--c-line) 1px, transparent 1px);
  background-size: 28px 28px;
}
/* faux section diagonals */
.project__drawing::before,
.project__drawing::after {
  content: "";
  position: absolute;
  inset: 14px;
  border: 1px solid var(--c-line-strong);
  pointer-events: none;
}
.project__drawing::after {
  inset: auto;
  left: 14px; right: 14px; top: 50%;
  height: 1px;
  background: var(--c-line-strong);
  border: 0;
}

/* ---------------------------------------------------------------- */
/* 8. FOOTER                                                        */
/* ---------------------------------------------------------------- */
.footer {
  text-align: center;
  padding-block: var(--space-section);
  border-top: 1px solid var(--c-line);
}
.footer__signature {
  font-family: var(--font-hand);
  font-size: clamp(3.4rem, 11vw, 7.5rem);
  font-weight: 600;
  line-height: 1;
  margin: 1.4rem 0;
  transform: rotate(-3deg);
}
.footer__email {
  font-size: var(--fs-lead);
  font-style: italic;
  font-weight: 300;
  position: relative;
}
.footer__email::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%; height: 1px;
  background: var(--c-ink);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.6s var(--ease);
}
.footer__email:hover::after { transform: scaleX(1); transform-origin: left; }
.footer__small {
  margin-top: clamp(2rem, 6vw, 4rem);
  font-size: var(--fs-small);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-ink-faint);
}

/* ---------------------------------------------------------------- */
/* 9. DECORATIVE VERTICAL GRID                                      */
/* ---------------------------------------------------------------- */
.grid-lines {
  position: fixed;
  inset: 0;
  z-index: 0;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  justify-content: space-between;
  pointer-events: none;
}
.grid-lines span {
  width: 1px;
  height: 100%;
  background: var(--c-line);
  opacity: 0.5;
}
.grid-lines span:first-child,
.grid-lines span:last-child { opacity: 0.8; }

/* ---------------------------------------------------------------- */
/* 10. RESPONSIVE                                                   */
/* ---------------------------------------------------------------- */
@media (max-width: 900px) {
  .about {
    grid-template-columns: 1fr;
    gap: 1.6rem;
  }
  .project__grid {
    grid-template-columns: 1fr;
  }
  .project__img--tall { grid-row: auto; aspect-ratio: 4 / 3; }
  .project__grid--sketch { grid-template-columns: repeat(2, 1fr); }
  .grid-lines span:nth-child(2),
  .grid-lines span:nth-child(4) { display: none; }
}

@media (max-width: 600px) {
  :root { --gutter: 1.25rem; }
  .nav__links { gap: 1rem; }
  .nav__links li:nth-child(3) { display: none; } /* trim crowded nav */
  .projects__hint { display: none; }
  .project__grid--sketch { grid-template-columns: 1fr 1fr; }
  .card { width: 78vw; }
}

/* ---------------------------------------------------------------- */
/* 11. REDUCED MOTION — respect user preference                     */
/* ---------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal, .card, .hero__subtitle { opacity: 1 !important; transform: none !important; }
  .reveal-img::after { transform: scaleX(0) !important; }
  .signature { clip-path: none !important; }
  .cursor, .cursor-trail { display: none !important; }
  @media (hover: hover) and (pointer: fine) {
    body, a, .card { cursor: auto !important; }
  }
}