/* ============================================================
   SAFETY THIRD — styles.css

   To adjust the grid layout, change these variables in :root:
     --grid-columns   number of columns on desktop
     --grid-gap       space between thumbnails
   ============================================================ */

/* ── Custom Properties ──────────────────────────────────────── */
:root {
  /* Grid — edit these to adjust layout */
  --grid-columns: 3;
  --grid-gap: 2.5rem;

  /* Spacing */
  --site-max-width: 1400px;
  --site-padding: clamp(1.5rem, 5vw, 4rem);

  /* Typography */
  --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
  --font-size-nav: 0.6875rem;    /* 11px */
  --font-size-logo: 0.875rem;    /* 14px */
  --font-size-title: 0.625rem;   /* 10px */
  --letter-spacing-wide: 0.15em;
  --letter-spacing-wider: 0.22em;

  /* Colors */
  --color-bg: #F7F5F2;
  --color-text: #000000;
  --color-overlay: rgba(0, 0, 0, 0.92);
  --color-thumb-overlay: rgba(0, 0, 0, 0.32);

  /* Transitions */
  --transition-speed: 240ms;
  --transition-ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);

  /* Lightbox */
  --lightbox-max-width: 90vw;
  --lightbox-max-height: 85vh;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

/* ── Header / Nav ───────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-bg);
}

.header-inner {
  max-width: var(--site-max-width);
  margin: 0 auto;
  padding: 1.75rem var(--site-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  font-size: var(--font-size-logo);
  font-weight: 500;
  letter-spacing: var(--letter-spacing-wider);
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  gap: 2.5rem;
}

.nav-link {
  font-size: var(--font-size-nav);
  font-weight: 400;
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  opacity: 0.4;
  transition: opacity var(--transition-speed) var(--transition-ease);
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  opacity: 1;
}

/* ── Main Content ───────────────────────────────────────────── */
.site-main {
  max-width: var(--site-max-width);
  margin: 0 auto;
  padding: 3rem var(--site-padding) 6rem;
}

/* ── Grid ───────────────────────────────────────────────────── */
.grid {
  display: grid;
  grid-template-columns: repeat(var(--grid-columns), 1fr);
  gap: var(--grid-gap);
}

/* ── Grid Item (Card) ───────────────────────────────────────── */
.grid-item {
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  text-align: left;
  will-change: transform;
  transform-style: preserve-3d;
}

/* Scroll reveal — JS adds .js-reveal to the grid when active */
.js-reveal .grid-item {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.js-reveal .grid-item.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.grid-item:focus-visible {
  outline: 1.5px solid var(--color-text);
  outline-offset: 3px;
}

/* Thumbnail container */
.thumb-wrap {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: #e8e8e8; /* placeholder while image loads */
}

.thumb-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-speed) var(--transition-ease);
}

/* Hover overlay */
.thumb-overlay {
  position: absolute;
  inset: 0;
  background: var(--color-thumb-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-speed) var(--transition-ease);
}

.grid-item:hover .thumb-overlay,
.grid-item:focus-visible .thumb-overlay {
  opacity: 1;
}

.grid-item:hover .thumb-wrap img,
.grid-item:focus-visible .thumb-wrap img {
  transform: scale(1.03);
}

/* CSS-only play icon */
.play-icon {
  width: 46px;
  height: 46px;
  border: 1.5px solid rgba(255, 255, 255, 0.85);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.play-icon::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 7px 0 7px 14px;
  border-color: transparent transparent transparent rgba(255, 255, 255, 0.9);
  margin-left: 3px; /* optical centering */
}

/* Title below thumbnail */
.video-title {
  margin-top: 0.7rem;
  font-size: var(--font-size-title);
  font-weight: 400;
  letter-spacing: var(--letter-spacing-wider);
  text-transform: uppercase;
  line-height: 1.5;
  color: rgba(0, 0, 0, 0.4);
  transition: color 0.35s ease;
}

.grid-item:hover .video-title,
.grid-item:focus-visible .video-title {
  color: rgba(0, 0, 0, 1);
}

/* ── Lightbox ───────────────────────────────────────────────── */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  /* Fade in/out via .is-open class */
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

.lightbox[hidden] {
  display: none;
}

.lightbox.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.lightbox-overlay {
  position: absolute;
  inset: 0;
  background: var(--color-overlay);
  cursor: pointer;
}

.lightbox-container {
  position: relative;
  z-index: 1;
  width: min(var(--lightbox-max-width), calc(var(--lightbox-max-height) * (16 / 9)));
  /* Subtle scale-up on open */
  transform: scale(0.96);
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.lightbox.is-open .lightbox-container {
  transform: scale(1);
}

.lightbox-iframe-wrap {
  aspect-ratio: 16 / 9;
  width: 100%;
  background: #000;
}

.lightbox-iframe-wrap iframe {
  width: 100%;
  height: 100%;
  display: block;
  border: none;
}

/* Prev / Next arrows — hidden unless container has .has-multiple */
.lightbox-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 50%;
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.875rem;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-speed) ease,
              border-color var(--transition-speed) ease;
}

.lightbox-arrow:hover {
  background: rgba(0, 0, 0, 0.6);
  border-color: rgba(255, 255, 255, 0.5);
}

.lightbox-arrow:disabled {
  opacity: 0.18;
  cursor: default;
  pointer-events: none;
}

.lightbox-prev { left: 0.875rem; }
.lightbox-next { right: 0.875rem; }

.lightbox-container.has-multiple .lightbox-arrow {
  display: flex;
}

/* Thumbnail strip */
.lightbox-thumbs {
  display: none;
  margin-top: 0.875rem;
  gap: 0.4rem;
  justify-content: center;
  overflow-x: auto;
  padding-bottom: 0.125rem;
  scrollbar-width: none;
}

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

.lightbox-container.has-multiple .lightbox-thumbs {
  display: flex;
}

.lightbox-thumb {
  flex-shrink: 0;
  width: 80px;
  height: 45px;
  overflow: hidden;
  border: 1px solid transparent;
  background: rgba(255, 255, 255, 0.08);
  cursor: pointer;
  padding: 0;
  opacity: 0.42;
  transition: opacity 0.25s ease, border-color 0.25s ease;
}

.lightbox-thumb:hover { opacity: 0.72; }

.lightbox-thumb.is-active {
  opacity: 1;
  border-color: rgba(255, 255, 255, 0.6);
}

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

.lightbox-close {
  position: absolute;
  top: -2.25rem;
  right: 0;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity var(--transition-speed);
  padding: 0.25rem 0.5rem;
  font-family: var(--font-primary);
  font-weight: 300;
  letter-spacing: 0;
}

.lightbox-close:hover {
  opacity: 1;
}

.lightbox-close:focus-visible {
  outline: 1px solid #fff;
  outline-offset: 2px;
  opacity: 1;
}

/* ── About Page ─────────────────────────────────────────────── */
.about-content {
  max-width: 600px;
  padding-top: 5rem;
  padding-bottom: 5rem;
}

.about-heading {
  font-size: clamp(1.25rem, 3vw, 2rem);
  font-weight: 300;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 3rem;
}

.about-body {
  font-size: 0.9375rem;
  font-weight: 300;
  line-height: 1.85;
  color: rgba(0, 0, 0, 0.72);
}

.about-body + .about-body {
  margin-top: 1.5em;
}

/* ── Principals ──────────────────────────────────────────────── */
.principals {
  padding-bottom: 7rem;
}

.principals-heading {
  font-size: var(--font-size-nav);
  font-weight: 400;
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  color: rgba(0, 0, 0, 0.4);
  margin-bottom: 3.5rem;
}

.principals-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 340px));
  gap: 4rem 5rem;
}

.principal-photo-wrap {
  aspect-ratio: 3 / 4;
  overflow: hidden;
  margin-bottom: 1.5rem;
  background: #e8e6e3;
}

.principal-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
  filter: grayscale(100%);
  transition: filter 0.5s ease;
}

.principal:hover .principal-photo {
  filter: grayscale(0%);
}

.principal-name {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: var(--letter-spacing-wider);
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.principal-bio {
  font-size: 0.875rem;
  font-weight: 300;
  line-height: 1.8;
  color: rgba(0, 0, 0, 0.65);
  max-width: 320px;
}

@media (max-width: 640px) {
  .principals-grid {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }

  .principal-bio {
    max-width: none;
  }
}

/* ── Footer ─────────────────────────────────────────────────── */
.site-footer {
  max-width: var(--site-max-width);
  margin: 0 auto;
  padding: 2rem var(--site-padding) 2.5rem;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.footer-copy {
  font-size: 0.625rem;
  font-weight: 400;
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  color: rgba(0, 0, 0, 0.35);
  text-align: center;
}

/* ── Page Fade Transition ────────────────────────────────────── */
.page-fade {
  position: fixed;
  inset: 0;
  z-index: 9998;
  background: var(--color-bg);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.38s ease;
}

.page-fade.is-visible {
  opacity: 1;
  pointer-events: auto;
}

/* ── Responsive Breakpoints ─────────────────────────────────── */

/* Tablet */
@media (max-width: 900px) {
  :root {
    --grid-columns: 2;
    --grid-gap: 1.75rem;
  }
}

/* Mobile */
@media (max-width: 560px) {
  :root {
    --grid-columns: 1;
    --grid-gap: 2rem;
  }

  .header-inner {
    padding-top: 1.25rem;
    padding-bottom: 1.25rem;
  }

  .site-nav {
    gap: 1.75rem;
  }

  .site-main {
    padding-top: 2rem;
    padding-bottom: 4rem;
  }

  .lightbox-close {
    top: -2rem;
    font-size: 1.25rem;
  }
}