/* ---------------------------------------------
   Taha Ahmad Photography — Black & White, Open Layout
   Simple system sans-serif, generous whitespace
--------------------------------------------- */

:root {
  --black: #111111;
  --white: #ffffff;
  --grey: #6f6f6f;
  --light-grey: #e6e6e6;
  --gap: clamp(1.25rem, 4vw, 3rem);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

html, body {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  max-width: 100%;
}

/* clip (unlike hidden) doesn't make body a scroll container, so sticky sidebars can pin to the window */
body {
  overflow-x: clip;
}

body.nav-locked {
  overflow: hidden;
}

body {
  background: var(--white);
  color: var(--black);
  font-family: "Montserrat", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-weight: 400;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

img {
  max-width: 100%;
  display: block;
}

h1, h2, h3 {
  font-weight: 500;
  font-size: 0.85rem;
  line-height: 1.85;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--black);
}

/* ---------- Header ---------- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.6rem var(--gap);
  background: rgba(255, 255, 255, 0.96);
}

.logo {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.09em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-nav a {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--grey);
  transition: color 0.2s ease;
}

.site-nav a:hover {
  color: var(--black);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  height: 1px;
  width: 100%;
  background: var(--black);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.nav-dropdown {
  position: relative;
  flex: none;
}

.nav-dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  font-family: inherit;
  font-size: 0.8rem;
  line-height: inherit;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--grey);
  background: none;
  border: none;
  margin: 0;
  padding: 0;
  cursor: pointer;
  transition: color 0.2s ease;
}

.nav-dropdown-toggle:hover,
.nav-dropdown:hover .nav-dropdown-toggle,
.nav-dropdown.is-open .nav-dropdown-toggle {
  color: var(--black);
}

.nav-dropdown-toggle::after {
  content: "";
  width: 0.38em;
  height: 0.38em;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-0.15em) rotate(45deg);
  transition: transform 0.2s ease;
}

.nav-dropdown:hover .nav-dropdown-toggle::after,
.nav-dropdown.is-open .nav-dropdown-toggle::after {
  transform: translateY(0.1em) rotate(-135deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 170px;
  margin-top: 0.75rem;
  background: var(--white);
  border: 1px solid var(--light-grey);
  padding: 0.4rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown.is-open .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-menu a {
  display: block;
  padding: 0.6rem 1.1rem;
  white-space: nowrap;
}

/* ---------- Slider ---------- */

.slider {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 480px;
  overflow: hidden;
  background: var(--white);
}

.slider-track {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 1s ease;
  padding: clamp(6rem, 9vw, 8rem) clamp(2rem, 8vw, 6rem) clamp(7.5rem, 11vw, 9rem);
}

.slide.is-active {
  opacity: 1;
  z-index: 1;
}

.slide img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}

.slider-caption {
  position: absolute;
  left: var(--gap);
  bottom: 6.5rem;
  z-index: 2;
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--grey);
}

.slider-caption .slide-title {
  color: var(--black);
}

.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--black);
  cursor: pointer;
  opacity: 0.5;
  transition: opacity 0.2s ease;
  padding: 0.5rem;
}

.slider-arrow:hover { opacity: 1; }
.slider-arrow.prev { left: clamp(0.5rem, 2vw, 1.5rem); }
.slider-arrow.next { right: clamp(0.5rem, 2vw, 1.5rem); }

.slider-thumbs {
  position: absolute;
  left: 0;
  right: 0;
  bottom: clamp(1.25rem, 3vw, 2rem);
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  justify-content: safe center;
  gap: 0.5rem;
  padding: 12px var(--gap);
  overflow-x: auto;
  overflow-y: visible;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

/* project strips: smaller thumbs so the photo keeps its size, capped at the homepage's
   10-thumb width, scroll or drag for the rest */
.project-hero-slider {
  --pthumb: clamp(40px, 4.6vw, 56px);
  --pthumb-bottom: 0.75rem;
}

.project-hero-slider .slider-thumbs {
  bottom: var(--pthumb-bottom);
  gap: 0;
  max-width: calc(10 * clamp(52px, 7vw, 78px) + 9 * 0.5rem + 2 * var(--gap));
  margin: 0 auto;
}

.project-hero-slider .slider-thumb {
  width: var(--pthumb);
}

.slider-thumbs.is-dragging,
.slider-thumbs.is-dragging .slider-thumb {
  cursor: grabbing;
}

.slider-thumbs.is-dragging .slider-thumb:hover:not(.is-active) {
  transform: scale(1);
}

.slider-thumbs::-webkit-scrollbar {
  display: none;
}

.slider-thumb {
  position: relative;
  flex: none;
  width: clamp(52px, 7vw, 78px);
  aspect-ratio: 3 / 2;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
  transform: scale(1);
  transform-origin: center;
  transition: transform 0.2s ease;
}

.slider-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.slider-thumb:hover {
  transform: scale(1.1);
}

.slider-thumb.is-active {
  transform: scale(1.25);
  z-index: 1;
}

/* ---------- Homepage: "From the Series" line between photo and thumbnails ---------- */

.slider {
  --hthumb-bottom: 0.75rem;
  /* strip top edge = offset + strip padding (12px x2) + thumb height (3:2) */
  --hthumb-top: calc(var(--hthumb-bottom) + 24px + clamp(52px, 7vw, 78px) * 2 / 3);
}

.slider .slider-thumbs {
  bottom: var(--hthumb-bottom);
}

.slider .slide {
  padding-bottom: calc(var(--hthumb-top) + 4.25rem);
}

.home-series {
  position: absolute;
  left: var(--gap);
  right: var(--gap);
  bottom: calc(var(--hthumb-top) + 1.25rem);
  z-index: 2;
  margin: 0;
  text-align: center;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--grey);
}

.home-series-title {
  color: var(--black);
  text-decoration: none;
}

.home-series-title:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- Intro ---------- */

.intro {
  max-width: 640px;
  margin: 0 auto;
  padding: 6rem var(--gap) 2rem;
}

.intro-text {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--grey);
}

.intro-page {
  padding-top: 7.5rem;
  padding-bottom: 0;
  text-align: center;
}

.intro-page h1 {
  margin-bottom: 0;
}

.intro-page + .gallery {
  padding-top: 3rem;
}

/* ---------- Gallery ---------- */

.gallery {
  padding: 5rem var(--gap) 6rem;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}

.gallery-item {
  display: block;
}

.gallery-grid-square .gallery-item img {
  aspect-ratio: 1 / 1;
}

.gallery-item-img-center {
  object-position: center;
}

.gallery-item figure {
  margin: 0;
}

.gallery-item img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  transition: opacity 0.3s ease;
}

.gallery-item:hover img {
  opacity: 0.75;
}

.gallery-item figcaption {
  margin-top: 0.75rem;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--grey);
}

.view-all {
  text-align: center;
  margin: 3rem 0 0;
}

.view-all a {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--grey);
  transition: color 0.2s ease;
}

.view-all a:hover {
  color: var(--black);
}

/* ---------- Project page ---------- */

.project-hero-slider {
  position: relative;
  width: 100%;
  height: 90vh;
  min-height: 480px;
  overflow: hidden;
  background: var(--white);
}

.project-hero-slider .slide {
  padding: clamp(6rem, 9vw, 8rem) clamp(2rem, 8vw, 6rem) clamp(1rem, 2.5vw, 1.5rem);
}

.project-hero-slider + main .project-content {
  padding-top: 0.5rem;
}

/* ---------- Project tabs (whitespace layout) ---------- */

.project-layout {
  display: flex;
  align-items: flex-start;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.project-tabs {
  flex: 0 0 auto;
  width: 220px;
  position: sticky;
  top: 0;
  padding: 7.5rem 0 3rem var(--gap);
}

.project-tabs-nav {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.project-tab-btn {
  display: block;
  text-align: left;
  background: none;
  border: none;
  padding: 0;
  font-family: inherit;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  line-height: 1.4;
  color: var(--grey);
  cursor: pointer;
  transition: color 0.2s ease;
}

.project-tab-btn:hover {
  color: var(--black);
}

.project-tab-btn.is-active {
  color: var(--black);
  font-weight: 600;
}

.project-tab-panels {
  flex: 1 1 auto;
  min-width: 0;
}

.project-tab-panel {
  display: none;
}

.project-tab-panel.is-active {
  display: block;
}

.project-tab-panel > .project-content:first-child {
  padding-top: 7.5rem;
}

.project-tab-panel > .project-content:first-child > p:first-child {
  margin-top: 0;
}

.project-tab-panel .project-hero-slider + .project-content {
  padding-top: 2rem;
}

@media (max-width: 900px) {
  .project-layout {
    flex-direction: column;
  }

  .project-tabs {
    position: static;
    width: 100%;
    padding: 7.5rem var(--gap) 0;
  }

  .project-tabs-nav {
    flex-direction: row;
    flex-wrap: wrap;
    column-gap: 1.75rem;
    row-gap: 0.75rem;
  }

  .project-tab-panels {
    width: 100%;
  }
}

.project-slide-caption {
  border-bottom: 1px solid var(--light-grey);
  padding: 1.25rem var(--gap) 2rem;
}

.project-slide-caption-inner {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  gap: 1.25rem;
  align-items: baseline;
}

.project-slide-caption.is-empty .project-slide-caption-inner {
  display: none;
}

.project-slide-caption.is-empty .project-slide-caption-meta {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.project-slide-caption-index {
  flex: 0 0 auto;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--grey);
  white-space: nowrap;
}

.project-slide-caption-text {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--grey);
  margin: 0;
  white-space: pre-line;
}

.project-slide-caption-meta {
  max-width: 760px;
  margin: 2rem auto 0;
  padding-top: 2rem;
  border-top: 1px solid var(--light-grey);
}

.project-slide-caption-meta h1 {
  margin-bottom: 1.5rem;
}

.project-slide-caption-meta h1:last-child {
  margin-bottom: 0;
}

.project-slide-caption-meta .project-meta {
  margin-bottom: 0;
}

.project-credits {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--light-grey);
}

.project-credits p:last-child {
  margin-bottom: 0;
}

.project-content {
  max-width: 760px;
  margin: 0 auto;
  padding: 4rem var(--gap) 6rem;
}

.project-meta {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  margin-bottom: 1.5rem;
  font-size: 0.75rem;
  line-height: 1.85;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--black);
}

/* year left, medium in between, place flush with the right edge of the text column */
.project-meta span:last-child:not(:first-child) {
  text-align: right;
}

h1 {
  margin: 0 0 2rem;
}

.project-content p {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--grey);
  margin-bottom: 1.25rem;
}

.project-request {
  margin-top: 2.5rem;
}

.project-download {
  margin-top: 2rem;
}

.project-sources {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--light-grey);
}

.project-sources-label {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--grey);
  margin-bottom: 0.75rem;
}

.project-sources a {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--grey);
  word-break: break-all;
  margin-bottom: 0.4rem;
  transition: color 0.2s ease;
}

.project-sources a:last-child {
  margin-bottom: 0;
}

.project-sources a:hover {
  color: var(--black);
}

.download-btn,
.request-link {
  display: inline-block;
  font-family: inherit;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--grey);
  background: none;
  border: none;
  border-bottom: 1px solid var(--grey);
  padding: 0 0 0.15rem;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.download-btn:hover,
.request-link:hover {
  color: var(--black);
  border-color: var(--black);
}

/* ---------- Request modal ---------- */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--gap);
  background: rgba(17, 17, 17, 0.6);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.modal-box {
  position: relative;
  width: 100%;
  max-width: 420px;
  background: var(--white);
  padding: 3rem 2rem 2.5rem;
  text-align: center;
}

.modal-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--grey);
  cursor: pointer;
}

.modal-close:hover {
  color: var(--black);
}

.modal-box h2 {
  margin-bottom: 1rem;
}

.modal-text {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--grey);
  margin-bottom: 1.75rem;
}

.modal-form {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.modal-form input[type="email"] {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--light-grey);
  font-family: inherit;
  font-size: 0.85rem;
  color: var(--black);
  background: var(--white);
}

.modal-form input[type="email"]:focus {
  outline: none;
  border-color: var(--black);
}

.modal-submit {
  padding: 0.85rem 1rem;
  border: 1px solid var(--black);
  background: var(--black);
  color: var(--white);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.modal-submit:hover {
  background: var(--white);
  color: var(--black);
}

.modal-form input[type="email"]:read-only {
  color: var(--grey);
}

.modal-success {
  margin-top: 1.25rem;
  font-size: 0.8rem;
  color: var(--grey);
  line-height: 1.6;
}

.project-nav {
  border-top: 1px solid var(--light-grey);
  padding: 2.5rem var(--gap);
  display: flex;
  justify-content: space-between;
  max-width: 640px;
  margin: 0 auto;
}

.project-nav a {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--grey);
  transition: color 0.2s ease;
}

.project-nav a:hover {
  color: var(--black);
}

/* ---------- Footer ---------- */

.site-footer {
  padding: 2rem var(--gap);
  text-align: center;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--grey);
}

.site-footer p {
  margin: 0;
}

.social-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem 1.75rem;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--grey);
  transition: color 0.2s ease;
}

.social-links a:hover {
  color: var(--black);
}

/* ---------- About page ---------- */

.about-page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 7.5rem var(--gap) 5rem;
  display: grid;
  grid-template-columns: minmax(200px, 1fr) 2fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}

.about-photo {
  margin: 0;
}

.about-photo img {
  display: block;
  width: 100%;
  height: auto;
}

.about-text p:first-child {
  margin-top: 0;
}

.about-text p {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--grey);
  margin-bottom: 1.25rem;
}

.about-text .bio-heading {
  margin: 2.5rem 0 1rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: none;
  line-height: 1.6;
  color: var(--black);
}

.about-text strong {
  font-weight: 700;
  color: var(--black);
}

.about-text sup {
  font-size: 0.7em;
  line-height: 0;
}

.about-text .project-download {
  margin-top: 2.5rem;
}

@media (max-width: 800px) {
  .about-page {
    grid-template-columns: 1fr;
    padding-top: 7.5rem;
  }

  .about-photo {
    max-width: 360px;
  }
}

/* ---------- Responsive ---------- */

@media (max-width: 800px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .site-nav {
    position: fixed;
    inset: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    justify-content: safe center;
    gap: 1.75rem;
    background: var(--white);
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    overflow-y: auto;
    padding: 6rem var(--gap) 3rem;
    transition: opacity 0.3s ease, visibility 0.3s ease;
  }

  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
  }

  .site-nav a {
    padding: 0;
    border-top: none;
    font-size: 1.15rem;
  }

  .nav-toggle {
    display: flex;
    position: relative;
    z-index: 100;
  }

  .nav-dropdown {
    width: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .nav-dropdown-toggle {
    width: auto;
    text-align: center;
    padding: 0;
    border-top: none;
    font-size: 1.15rem;
  }

  .nav-dropdown-toggle::after {
    display: none;
  }

  /* phone menu: project links always shown as a nested list under "Projects" */
  .nav-dropdown-menu {
    position: static;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.85rem;
    min-width: 0;
    margin-top: 1rem;
    border: none;
    padding: 0;
    background: none;
    opacity: 1;
    /* inherit (not visible) so the links stay hidden and untappable while the phone menu is closed */
    visibility: inherit;
    transform: none;
    transition: none;
  }

  .nav-dropdown:hover .nav-dropdown-menu,
  .nav-dropdown.is-open .nav-dropdown-menu {
    visibility: inherit;
  }

  .nav-dropdown-menu a {
    max-width: 80vw;
    padding: 0;
    border-top: none;
    font-size: 0.8rem;
    line-height: 1.4;
    text-align: center;
    white-space: normal;
  }

}

@media (max-width: 640px) {
  .slider {
    height: 95vh;
  }

  .slider .slide {
    padding-bottom: 6rem;
  }

  .project-hero-slider {
    height: 55vh;
    min-height: 340px;
  }

  .project-slide-caption-inner {
    flex-direction: column;
    gap: 0.5rem;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }

  .gallery-item figcaption {
    margin-top: 1rem;
    font-size: 0.8rem;
  }

  .slider-caption {
    display: none;
  }

  .slider-thumbs {
    bottom: 2.5rem;
    gap: 0;
    overflow-x: visible;
  }

  .slider-thumb {
    width: calc(100% / 10);
  }

  /* project slideshows can have 40+ thumbs: keep them scrollable instead of squeezed */
  .project-hero-slider.has-thumbs {
    height: 70vh;
    min-height: 420px;
  }

  .project-hero-slider {
    --pthumb: 38px;
    --pthumb-bottom: 0.75rem;
  }

  .project-hero-slider .slider-thumbs {
    overflow-x: auto;
  }

  .project-content p,
  .about-text p,
  .project-slide-caption-text {
    hyphens: auto;
    -webkit-hyphens: auto;
  }
}

/* ---------- Project slideshow thumbnails ---------- */

/* room reserved under the photo = strip offset + thumb height (scaled when active) + strip padding */
.project-hero-slider.has-thumbs .slide {
  padding-bottom: calc(var(--pthumb-bottom) + var(--pthumb) * 0.84 + 30px);
}

/* ---------- Goddesses process photo (about 115% of the text width) ---------- */

.process-figure {
  max-width: calc((760px - 2 * var(--gap)) * 1.15 + 2 * var(--gap));
  margin: 0 auto;
  padding: 7.5rem var(--gap) 0;
}

.process-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.project-tab-panel .process-figure + .project-content {
  padding-top: 2.5rem;
}

/* ---------- Body text: justified, roomier line height ---------- */

.project-content p,
.about-text p,
.project-slide-caption-text {
  line-height: 1.85;
  text-align: justify;
  text-align-last: left;
  text-justify: inter-word;
}

/* ---------- Contact page ---------- */

.contact-page {
  max-width: 560px;
  margin: 0 auto;
  padding: 7.5rem var(--gap) 6rem;
}

.contact-page h1 {
  margin-bottom: 1.25rem;
}

.contact-email {
  margin: 0 0 2.5rem;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--grey);
}

.contact-email a {
  border-bottom: 1px solid var(--light-grey);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.contact-email a:hover {
  color: var(--black);
  border-color: var(--black);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--grey);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--light-grey);
  border-radius: 0;
  font-family: inherit;
  font-size: 0.85rem;
  letter-spacing: normal;
  text-transform: none;
  color: var(--black);
  background: var(--white);
}

.contact-form textarea {
  min-height: 160px;
  resize: vertical;
  line-height: 1.6;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--black);
}

.contact-submit {
  align-self: flex-start;
  min-width: 160px;
}

.modal-submit:disabled {
  background: var(--black);
  color: var(--white);
  opacity: 0.45;
  cursor: default;
}

.contact-form input:read-only,
.contact-form textarea:read-only {
  color: var(--grey);
}

.contact-success {
  margin-top: 1.25rem;
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--grey);
}

.contact-page .social-links {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--light-grey);
}

/* ---------- Landing (entry) page ---------- */

.landing-page {
  background: var(--black);
}

.landing {
  position: relative;
  height: 100vh;
  height: 100svh;
  min-height: 420px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.landing-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
}

.landing::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.2);
}

.landing-enter {
  position: relative;
  z-index: 1;
  padding: 0.2em 0.5em 0.2em calc(0.5em + 0.1em);
  font-family: "Montserrat", sans-serif;
  font-weight: 600;
  font-size: clamp(2.25rem, 6.3vw, 4.5rem);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
  transition: opacity 0.3s ease;
}

.landing-enter:hover,
.landing-enter:focus-visible {
  opacity: 0.75;
}

/* ---------- Letter books (Zarren Payaam-e-Urdu) ---------- */

.project-content.letter-section {
  max-width: 1040px;
}

.letter-entry {
  margin-top: 4rem;
}

.letter-entry h2 {
  margin: 0 0 1.5rem;
  text-align: center;
}

.letter-book {
  --ratio: 1.3;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.book-stage {
  position: relative;
  width: min(100%, calc(72vh / var(--ratio) * 2));
  aspect-ratio: 2 / var(--ratio);
  perspective: 2400px;
  background: var(--white);
  box-shadow: 0 22px 45px -22px rgba(0, 0, 0, 0.45), 0 2px 8px rgba(0, 0, 0, 0.08);
}

.book-stage.is-single {
  width: min(100%, calc(72vh / var(--ratio)));
  aspect-ratio: 1 / var(--ratio);
}

/* spine shadow between the two pages */
.book-stage::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 90px;
  transform: translateX(-50%);
  background: linear-gradient(to right, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.025) 30%, rgba(0, 0, 0, 0.06) 45%, rgba(0, 0, 0, 0.09) 50%, rgba(0, 0, 0, 0.06) 55%, rgba(0, 0, 0, 0.025) 70%, rgba(0, 0, 0, 0) 100%);
  pointer-events: none;
  z-index: 5;
  opacity: 1;
  /* fades back in gently after a page has landed */
  transition: opacity 0.9s ease 0.1s;
}

/* while a page is turning the crease fades out, so it never pops back abruptly */
.book-stage.is-turning::after {
  opacity: 0;
  transition: opacity 0.25s ease;
}

.book-stage.is-single::after {
  display: none;
}

.book-page {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 50%;
  overflow: hidden;
  background: var(--white);
  cursor: zoom-in;
}

.book-page--left {
  left: 0;
}

.book-page--right {
  right: 0;
}

.book-stage.is-single .book-page--right {
  width: 100%;
}

.book-stage.is-single .book-page--left {
  display: none;
}

.book-page.is-blank {
  cursor: default;
}

.book-page img,
.leaf-face img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: contain;
}

.book-page.is-blank img {
  visibility: hidden;
}

.book-page.is-fading img {
  animation: bookFade 0.35s ease;
}

@keyframes bookFade {
  from { opacity: 0; }
  to { opacity: 1; }
}

.book-leaf {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 50%;
  z-index: 6;
  transform-style: preserve-3d;
  transition: transform 0.75s cubic-bezier(0.3, 0.1, 0.25, 1);
}

.book-leaf.on-right {
  right: 0;
  transform-origin: left center;
}

.book-leaf.on-left {
  left: 0;
  transform-origin: right center;
}

.book-leaf.on-right.is-turning {
  transform: rotateY(-180deg);
}

.book-leaf.on-left.is-turning {
  transform: rotateY(180deg);
}

.leaf-face {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: var(--white);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  box-shadow: inset 0 0 30px rgba(0, 0, 0, 0.06);
}

.leaf-back {
  transform: rotateY(180deg);
}

.book-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1.25rem;
}

.book-arrow {
  padding: 0.35rem 0.6rem;
  background: none;
  border: none;
  font-size: 1.4rem;
  line-height: 1;
  color: var(--black);
  opacity: 0.55;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.book-arrow:hover {
  opacity: 1;
}

.book-arrow:disabled {
  opacity: 0.15;
  cursor: default;
}

.book-count {
  min-width: 9.5em;
  text-align: center;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--grey);
}

.project-content .letter-download {
  margin: 1.75rem 0 0;
  text-align: center;
  text-align-last: center;
}

/* enlarged page viewer */
.book-lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  flex-direction: column;
  background: rgba(17, 17, 17, 0.94);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.book-lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.lb-scroller {
  flex: 1;
  display: flex;
  overflow: auto;
  padding: 3.5rem var(--gap) 1rem;
}

.lb-img {
  margin: auto;
  max-width: 100%;
  max-height: calc(100vh - 8rem);
  background: var(--white);
  cursor: zoom-in;
}

.lb-img.is-zoomed {
  max-width: none;
  max-height: none;
  cursor: zoom-out;
}

.lb-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  padding: 0.75rem var(--gap) 1rem;
}

.lb-count {
  min-width: 8em;
  text-align: center;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: #cfcfcf;
}

.lb-btn {
  padding: 0.35rem 0.6rem;
  background: none;
  border: none;
  font-size: 1.4rem;
  line-height: 1;
  color: var(--white);
  opacity: 0.75;
  cursor: pointer;
}

.lb-btn:hover {
  opacity: 1;
}

.lb-btn:disabled {
  opacity: 0.2;
  cursor: default;
}

.lb-close {
  position: absolute;
  top: 0.75rem;
  right: 1rem;
  z-index: 1;
  font-size: 2rem;
}

/* Tabs without a heading: start flush with the panel top */
.project-content > p:first-child,
.letter-entry:first-child {
  margin-top: 0;
}

.project-content .letter-credit {
  margin: 4rem 0 0;
  text-align: center;
  text-align-last: center;
}

/* spam trap: hidden from people, filled in by bots */
.hp-field {
  position: absolute !important;
  left: -9999px !important;
  width: 1px !important;
  height: 1px !important;
  opacity: 0 !important;
}

@media (max-width: 640px) {
  .slider {
    --hthumb-bottom: 1rem;
    /* phone thumbs are 10% of the strip width */
    --hthumb-top: calc(var(--hthumb-bottom) + 24px + (100vw - 2 * var(--gap)) / 10 * 2 / 3);
  }

  .slider .slider-thumbs {
    bottom: var(--hthumb-bottom);
  }

  .slider .slide {
    padding-bottom: calc(var(--hthumb-top) + 5.5rem);
  }

  .home-series {
    font-size: 0.65rem;
  }
}

/* screen-reader / search-engine heading on pages that show no visible title */
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}