/* ============================================================
   Luminous Light — Photography Portfolio
   Base stylesheet — White / Black & Grey / Helvetica Neue Light
   ============================================================ */

/* ── Reset & Variables ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #ffffff;
  --surface:   #f7f7f7;
  --surface2:  #efefef;
  --border:    #e0e0e0;
  --border-dk: #c0c0c0;
  --text:      #1a1a1a;
  --muted:     #767676;
  --subtle:    #aaaaaa;
  --black:     #000000;
  --white:     #ffffff;

  /* No colour accent — everything is greyscale */
  --accent:    #1a1a1a;
  --accent-lt: #444444;

  --font: 'Helvetica Neue', 'HelveticaNeue', Helvetica, Arial, sans-serif;

  --fw-light:   300;
  --fw-regular: 400;
  --fw-medium:  500;

  --nav-h: 64px;
  --max-w: 1160px;
  --gap:   clamp(1.5rem, 4vw, 3rem);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: 1rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }

/* ── Typography ─────────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--font);
  font-weight: var(--fw-light);
  line-height: 1.15;
  color: var(--black);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.2rem, 5.5vw, 4rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.4rem); }
h3 { font-size: clamp(1.05rem, 1.8vw, 1.4rem); }

p  { max-width: 68ch; color: var(--text); }

.lead {
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  line-height: 1.8;
  color: var(--text);
}

.label {
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ── Layout helpers ─────────────────────────────────────────── */
.container {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--gap);
}

.section    { padding-block: clamp(4rem, 8vw, 7rem); }
.section--sm { padding-block: clamp(2rem, 4vw, 3.5rem); }

/* ── Navigation ─────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
.nav.scrolled { border-color: var(--border); }

.nav__inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--gap);
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: 1.05rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--black);
  transition: opacity 0.2s;
}
.nav__logo span { font-weight: var(--fw-regular); }
.nav__logo:hover { opacity: 0.5; }

.nav__links {
  display: flex;
  gap: 2.2rem;
  align-items: center;
}
.nav__links a {
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.2s;
  position: relative;
}
.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0; right: 0;
  height: 1px;
  background: var(--black);
  transform: scaleX(0);
  transition: transform 0.2s;
}
.nav__links a:hover,
.nav__links a.active { color: var(--black); }
.nav__links a:hover::after,
.nav__links a.active::after { transform: scaleX(1); }

/* Hamburger */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.nav__toggle span {
  display: block;
  width: 24px; height: 1px;
  background: var(--black);
  transition: all 0.3s;
}

/* Mobile nav */
.nav__mobile {
  display: none;
  position: fixed;
  top: var(--nav-h); left: 0; right: 0; bottom: 0;
  background: var(--white);
  z-index: 99;
  padding: 3rem var(--gap);
  flex-direction: column;
  gap: 2rem;
  border-top: 1px solid var(--border);
}
.nav__mobile.open { display: flex; }
.nav__mobile a {
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: 1.6rem;
  letter-spacing: -0.01em;
  color: var(--muted);
  transition: color 0.2s;
}
.nav__mobile a:hover { color: var(--black); }

/* ── Hero ───────────────────────────────────────────────────── */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-bottom: clamp(3rem, 6vw, 5rem);
  position: relative;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: var(--surface2);
  z-index: 0;
}
.hero__bg--gradient {
  background: linear-gradient(160deg, #e8e8e8 0%, #d8d8d8 50%, #e0e0e0 100%);
}
.hero__bg img,
.hero__bg video {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.6;
  filter: grayscale(100%);
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(255,255,255,0.92) 0%, rgba(255,255,255,0.3) 60%, transparent 100%);
  z-index: 1;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--gap);
  width: 100%;
}

.hero__eyebrow { margin-bottom: 1.2rem; }

.hero__title {
  margin-bottom: 1.4rem;
  color: var(--black);
}

.hero__body {
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  line-height: 1.85;
  color: var(--muted);
  max-width: 52ch;
  margin-bottom: 2.5rem;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--black);
  border: 1px solid var(--black);
  padding: 0.75rem 1.5rem;
  transition: all 0.22s;
}
.hero__cta:hover {
  background: var(--black);
  color: var(--white);
}
.hero__cta svg { transition: transform 0.2s; }
.hero__cta:hover svg { transform: translateX(4px); }

/* ── Page header ────────────────────────────────────────────── */
.page-header {
  padding-top: calc(var(--nav-h) + clamp(3rem, 6vw, 5rem));
  padding-bottom: clamp(2rem, 4vw, 3.5rem);
  border-bottom: 1px solid var(--border);
}
.page-header__container {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--gap);
}
.page-header__eyebrow { margin-bottom: 1rem; }
.page-header__title   { margin-bottom: 1rem; }
.page-header__sub {
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  color: var(--muted);
  max-width: 60ch;
  line-height: 1.85;
}

/* ── Prose ──────────────────────────────────────────────────── */
.prose { max-width: 68ch; }

.prose p {
  margin-bottom: 1.5em;
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: clamp(1rem, 1.3vw, 1.05rem);
  line-height: 1.9;
  color: var(--text);
}

.prose p:first-of-type::first-letter {
  font-size: 3.4em;
  line-height: 0.78;
  float: left;
  margin-right: 0.1em;
  margin-top: 0.06em;
  font-family: var(--font);
  font-weight: var(--fw-light);
  color: var(--black);
}

/* ── Series features ────────────────────────────────────────── */
.feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 560px;
}
.feature--rev { direction: rtl; }
.feature--rev > * { direction: ltr; }

.feature__image {
  background: var(--surface2);
  position: relative;
  overflow: hidden;
  min-height: 400px;
}
.feature__image img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.9;
  filter: grayscale(100%);
  transition: opacity 0.4s, filter 0.4s;
}
.feature__image:hover img { opacity: 1; filter: grayscale(0%); }

.feature__image__placeholder {
  width: 100%; height: 100%;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: 0.65rem;
  color: var(--border-dk);
  letter-spacing: 0.1em;
}

.feature__content {
  background: var(--surface);
  padding: clamp(2.5rem, 5vw, 4.5rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.feature__eyebrow { margin-bottom: 1rem; }
.feature__title   { margin-bottom: 1.2rem; }
.feature__body {
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: clamp(0.95rem, 1.3vw, 1.05rem);
  line-height: 1.85;
  color: var(--muted);
  margin-bottom: 2rem;
  max-width: 46ch;
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 0.65rem 1.3rem;
  transition: all 0.22s;
  width: fit-content;
}
.btn--outline {
  border: 1px solid var(--border-dk);
  color: var(--muted);
}
.btn--outline:hover {
  border-color: var(--black);
  color: var(--black);
}
.btn--accent {
  background: var(--black);
  color: var(--white);
  border: 1px solid var(--black);
}
.btn--accent:hover {
  background: transparent;
  color: var(--black);
}

/* ── Gallery grid ───────────────────────────────────────────── */
.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5px;
  background: var(--border);
}
.gallery--2col { grid-template-columns: repeat(2, 1fr); }
.gallery--4col { grid-template-columns: repeat(4, 1fr); }

.gallery__item {
  position: relative;
  overflow: hidden;
  background: var(--surface2);
  aspect-ratio: 1;
  cursor: zoom-in;
}
.gallery__item--wide { grid-column: span 2; aspect-ratio: 2/1; }
.gallery__item--tall { grid-row: span 2; aspect-ratio: 1/2; }

.gallery__item img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(100%);
  transition: transform 0.5s ease, filter 0.4s;
}
.gallery__item:hover img {
  transform: scale(1.04);
  filter: grayscale(0%);
}

.gallery__item__placeholder {
  width: 100%; height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--border-dk);
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-align: center;
  padding: 1rem;
}

/* ── Blog ───────────────────────────────────────────────────── */
.post-list { display: flex; flex-direction: column; gap: 1px; background: var(--border); }

.post-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  background: var(--white);
  transition: background 0.2s;
}
.post-item:hover { background: var(--surface); }

.post-item__image {
  background: var(--surface2);
  overflow: hidden;
  aspect-ratio: 4/3;
}
.post-item__image img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(100%);
  transition: filter 0.3s, transform 0.4s;
}
.post-item:hover .post-item__image img {
  filter: grayscale(0%);
  transform: scale(1.03);
}
.post-item__image__placeholder {
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--border-dk);
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: 0.6rem;
}

.post-item__content {
  padding: 2rem 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.post-item__meta {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 0.8rem;
}
.post-item__title {
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: 1.25rem;
  color: var(--black);
  margin-bottom: 0.8rem;
  letter-spacing: -0.01em;
  transition: opacity 0.2s;
}
.post-item:hover .post-item__title { opacity: 0.6; }

.post-item__excerpt {
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--muted);
  max-width: 60ch;
  margin-bottom: 1.2rem;
}

/* ── Contact form ───────────────────────────────────────────── */
.form { max-width: 600px; }
.form__group { margin-bottom: 1.5rem; }
.form__label {
  display: block;
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.5rem;
}
.form__input,
.form__textarea {
  width: 100%;
  background: var(--white);
  border: 1px solid var(--border);
  border-bottom: 1px solid var(--border-dk);
  color: var(--text);
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: 0.95rem;
  padding: 0.75rem 0;
  outline: none;
  transition: border-color 0.2s;
  border-radius: 0;
  -webkit-appearance: none;
  /* Underline only style */
  border-top: none;
  border-left: none;
  border-right: none;
}
.form__input:focus,
.form__textarea:focus { border-bottom-color: var(--black); }
.form__textarea {
  min-height: 140px;
  resize: vertical;
  line-height: 1.6;
  padding-top: 0.5rem;
}
.form__input::placeholder,
.form__textarea::placeholder { color: var(--subtle); }
.form__note {
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: 0.65rem;
  color: var(--subtle);
  margin-top: 0.4rem;
  letter-spacing: 0.06em;
}

/* ── Divider ────────────────────────────────────────────────── */
.divider {
  width: 32px;
  height: 1px;
  background: var(--black);
  margin-block: 1.5rem;
}

/* ── Quote block ────────────────────────────────────────────── */
.quote {
  border-left: 1px solid var(--black);
  padding: 0.3rem 0 0.3rem 2rem;
  margin-block: 2.5rem;
}
.quote p {
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  line-height: 1.75;
  color: var(--black);
  font-style: italic;
  max-width: 54ch;
}

/* ── Lightbox ───────────────────────────────────────────────── */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(255,255,255,0.97);
  z-index: 200;
  align-items: center;
  justify-content: center;
}
.lightbox.open { display: flex; }
.lightbox__img { max-width: 90vw; max-height: 90vh; object-fit: contain; }
.lightbox__close {
  position: absolute;
  top: 1.5rem; right: 1.5rem;
  background: none;
  border: 1px solid var(--border-dk);
  color: var(--muted);
  width: 40px; height: 40px;
  cursor: pointer;
  font-size: 1.2rem;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}
.lightbox__close:hover { border-color: var(--black); color: var(--black); }

/* ── Footer ─────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding-block: 3rem;
  margin-top: 6rem;
}
.footer__inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--gap);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.footer__logo {
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--black);
}
.footer__logo span { font-weight: var(--fw-regular); }
.footer__copy {
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: 0.65rem;
  color: var(--subtle);
  letter-spacing: 0.08em;
}
.footer__links { display: flex; gap: 2rem; }
.footer__links a {
  font-family: var(--font);
  font-weight: var(--fw-light);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.2s;
}
.footer__links a:hover { color: var(--black); }

/* ── Utility ────────────────────────────────────────────────── */
.mt-0 { margin-top: 0; }
.mb-4 { margin-bottom: 1rem; }
.mb-8 { margin-bottom: 2rem; }
.text-accent { color: var(--black); }
.text-muted  { color: var(--muted); }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav__links  { display: none; }
  .nav__toggle { display: flex; }

  .feature { grid-template-columns: 1fr; direction: ltr !important; }
  .feature__image { min-height: 260px; }

  .gallery { grid-template-columns: repeat(2, 1fr); }
  .gallery--4col { grid-template-columns: repeat(2, 1fr); }
  .gallery__item--wide { grid-column: span 1; aspect-ratio: 1; }
  .gallery__item--tall { grid-row: span 1; aspect-ratio: 1; }

  .post-item { grid-template-columns: 1fr; }
  .post-item__image { aspect-ratio: 16/9; }
  .post-item__content { padding: 1.5rem; }
}

@media (max-width: 480px) {
  .gallery { grid-template-columns: 1fr; }
  .footer__inner { flex-direction: column; align-items: flex-start; }

  /* About page two-col */
  [style*="grid-template-columns:1fr 1fr"] { grid-template-columns: 1fr !important; }
}