/* Zacharystokess — Photography Portfolio
   Visual language adapted from a contact-sheet / architecture-index aesthetic:
   cream ground, black type, tracked uppercase labels, an infinite draggable photo wall. */

:root {
  --color-bg: #f5f4f0;
  --color-fg: #0a0a0a;
  --color-muted: #6b6b66;
  --color-border: #dcdad2;

  --font-sans: "Helvetica Neue", Helvetica, Arial, sans-serif;

  --tile-size: 240px;
  --gap: 105px;

  --header-h: 64px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-fg);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

body.home {
  height: 100vh;
  overflow: hidden;
}

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

a {
  color: inherit;
}

a,
button {
  -webkit-tap-highlight-color: transparent;
}

.skip-link {
  position: absolute;
  left: 0;
  top: -48px;
  background: var(--color-fg);
  color: var(--color-bg);
  padding: 12px 20px;
  z-index: 200;
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.08em;
  transition: top 150ms var(--ease);
}

.skip-link:focus {
  top: 0;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  padding: 0 28px;
  background: linear-gradient(to bottom, rgba(245, 244, 240, 0.92) 0%, rgba(245, 244, 240, 0) 100%);
  pointer-events: none;
  animation: header-in 700ms var(--ease) both;
  animation-delay: 150ms;
}

.site-header a,
.site-header .brand,
.site-header button {
  pointer-events: auto;
}

@keyframes header-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.brand {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav .nav-link {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: border-color 200ms var(--ease), opacity 200ms var(--ease);
}

.site-nav .nav-link:hover,
.site-nav .nav-link:focus-visible {
  border-color: currentColor;
}

.site-nav .nav-link[aria-current="page"] {
  opacity: 0.4;
  pointer-events: none;
}

/* Homepage header floats over photos with a fade; other pages get a solid strip
   so scrolled content never bleeds through behind the brand name. */
body:not(.home) .site-header {
  background: var(--color-bg);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.category-dropdown {
  position: relative;
}

.category-dropdown,
.category-dropdown * {
  pointer-events: auto;
}

.category-trigger {
  display: flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: none;
  border: 0;
  padding: 0 0 2px;
  margin: 0;
  color: var(--color-fg);
  cursor: pointer;
  border-bottom: 1px solid transparent;
  transition: border-color 200ms var(--ease);
}

.category-trigger:hover,
.category-trigger:focus-visible {
  border-color: currentColor;
}

.category-caret {
  width: 11px;
  height: 11px;
  transition: transform 200ms var(--ease);
}

.category-trigger[aria-expanded="true"] .category-caret {
  transform: rotate(180deg);
}

.category-menu {
  position: absolute;
  top: calc(100% + 14px);
  right: 0;
  min-width: 150px;
  margin: 0;
  padding: 6px 0;
  list-style: none;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

.category-menu[hidden] {
  display: none;
}

.category-menu li {
  padding: 11px 18px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 150ms var(--ease);
}

.category-menu li:hover,
.category-menu li:focus-visible {
  background: var(--color-border);
}

@media (max-width: 700px) {
  .site-nav {
    gap: 12px 20px;
  }
}

:focus-visible {
  outline: 2px solid var(--color-fg);
  outline-offset: 3px;
}

/* ---------- Photo wall (home) ---------- */

.photo-wall {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
  background: var(--color-bg);
  cursor: grab;
  touch-action: none;
}

.photo-wall.is-dragging {
  cursor: grabbing;
}

.grid {
  position: absolute;
  inset: 0;
}

@media (max-width: 900px) {
  :root {
    --tile-size: 190px;
    --gap: 63px;
  }
}

@media (max-width: 560px) {
  :root {
    --tile-size: 130px;
    --gap: 35px;
  }
}

.tile {
  position: absolute;
  top: 0;
  left: 0;
  width: var(--tile-size);
  aspect-ratio: 1 / 1;
  padding: 0;
  border: 0;
  margin: 0;
  cursor: pointer;
  overflow: hidden;
  background: var(--color-bg);
  display: block;
  will-change: transform;
  transition: transform 500ms var(--ease);
}

.photo-wall.is-dragging .tile {
  transition: none;
}

.tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  -webkit-user-drag: none;
  user-select: none;
  transform: scale(1.02);
  transition: transform 700ms var(--ease), opacity 300ms var(--ease);
  opacity: 0;
}

.tile img.is-loaded {
  opacity: 1;
}

.tile:hover img,
.tile:focus-visible img {
  transform: scale(1.16);
}

/* Depth-of-field: tiles further from the viewport centre turn slightly soft and frosted. */
.tile::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(245, 244, 240, var(--frost-opacity, 0));
  backdrop-filter: blur(var(--frost-blur, 0px));
  -webkit-backdrop-filter: blur(var(--frost-blur, 0px));
  pointer-events: none;
  transition: opacity 150ms linear;
}

@media (prefers-reduced-motion: reduce) {
  .tile img,
  .tile,
  .site-header,
  .zoom-frame,
  .zoom-backdrop,
  .zoom-close {
    transition: none !important;
    animation: none !important;
  }
}

/* ---------- Zoom viewer ---------- */

.zoom-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(10, 10, 10, 0.92);
  opacity: 0;
  visibility: hidden;
  transition: opacity 400ms var(--ease), visibility 0ms linear 400ms;
  pointer-events: none;
}

.zoom-backdrop.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition: opacity 400ms var(--ease);
}

.zoom-frame {
  position: fixed;
  overflow: hidden;
  z-index: 201;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  transition: top 480ms var(--ease), left 480ms var(--ease), width 480ms var(--ease), height 480ms var(--ease),
    box-shadow 480ms var(--ease);
}

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

.zoom-close {
  position: fixed;
  top: 20px;
  right: 24px;
  z-index: 202;
  background: none;
  border: 0;
  color: #f5f4f0;
  font-size: 30px;
  line-height: 1;
  font-weight: 300;
  cursor: pointer;
  padding: 12px;
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity 250ms var(--ease), transform 250ms var(--ease);
  pointer-events: none;
}

.zoom-close.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* ---------- Connect page ---------- */

.contact-main {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--header-h) + 40px) 24px 80px;
}

.contact-gif {
  width: min(88vw, 320px);
  height: auto;
  margin: 0 0 32px;
}

.contact-form {
  width: min(90vw, 380px);
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 0 0 32px;
}

.contact-form input[type="text"],
.contact-form textarea {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 500;
  color: var(--color-fg);
  background: transparent;
  border: 1.5px solid var(--color-fg);
  padding: 16px 18px;
  transition: opacity 200ms var(--ease);
}

.contact-form textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form ::placeholder {
  color: var(--color-muted);
  opacity: 1;
  font-weight: 500;
}

.form-submit {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-bg);
  background: var(--color-fg);
  border: 1.5px solid var(--color-fg);
  padding: 16px 18px;
  cursor: pointer;
  transition: background-color 200ms var(--ease), color 200ms var(--ease), opacity 200ms var(--ease);
}

.form-submit:hover,
.form-submit:focus-visible {
  background: transparent;
  color: var(--color-fg);
}

.form-submit:disabled {
  opacity: 0.5;
  cursor: default;
}

.form-status {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.04em;
  min-height: 1.2em;
  text-align: center;
}

.form-status[data-state="error"] {
  color: #b3261e;
}

.contact-icons {
  display: flex;
  gap: 24px;
}

.contact-icons a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
}

.contact-icons svg {
  width: 20px;
  height: 20px;
  transition: transform 200ms var(--ease);
}

.contact-icons a:hover svg,
.contact-icons a:focus-visible svg {
  transform: scale(1.35);
}