/* ---------------------------------------------
   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%;
}

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;
  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: block;
  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-menu {
  position: absolute;
  top: 100%;
  left: 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(5rem, 10vw, 6.5rem) 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: flex-end;
  justify-content: center;
  gap: 0.5rem;
  padding: 14px var(--gap) 0;
  overflow-x: auto;
  overflow-y: visible;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.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: bottom 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;
}

/* ---------- 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: 6.5rem;
  text-align: center;
}

/* ---------- 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: 0.04em;
  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 {
  width: 100%;
  height: 82vh;
  min-height: 420px;
  overflow: hidden;
}

.project-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.project-meta {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--black);
}

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: 0.02em;
  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: 0.02em;
  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-success {
  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);
}

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

.about {
  border-top: 1px solid var(--light-grey);
  padding: 6rem var(--gap);
}

.about-inner {
  max-width: 640px;
  margin: 0 auto;
}

.about h2 {
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--black);
  margin-bottom: 2rem;
}

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

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

.contact {
  border-top: 1px solid var(--light-grey);
  padding: 6rem var(--gap);
  text-align: center;
}

.contact h2 {
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--black);
  margin-bottom: 1.5rem;
}

.contact p {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--grey);
  margin: 0.5rem 0;
}

.contact .socials {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1rem;
}

.contact .socials a {
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--grey);
}

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

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

.site-footer {
  padding: 2rem var(--gap);
  text-align: center;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--grey);
}

/* ---------- 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;
    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-menu {
    position: static;
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
    margin-top: 1.5rem;
    border: none;
    padding: 0;
    background: none;
  }

  .nav-dropdown.is-open .nav-dropdown-menu {
    display: flex;
  }

  .nav-dropdown-menu a {
    padding: 0;
    border-top: none;
    font-size: 0.95rem;
    white-space: normal;
  }

}

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

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

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

  .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);
  }
}