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

html { scroll-behavior: smooth; }

body {
  font-family: 'Google Sans', sans-serif;
  background: var(--md-sys-color-background);
  color: var(--md-sys-color-on-background);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

main { flex: 1; }

a { color: var(--md-sys-color-primary); text-decoration: none; }

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

/* ── Polaroid ── */
.polaroid {
  background: #fff;
  padding: 12px 12px 40px;
  box-shadow: 0 4px 8px rgba(0,0,0,.15), 0 12px 32px rgba(0,0,0,.12);
  transform: rotate(2.5deg);
  width: 220px;
  transition: transform 300ms cubic-bezier(0.2, 0, 0, 1);
}
.polaroid:hover {
  transform: rotate(0deg) scale(1.03);
}
.polaroid img {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  object-position: center top;
}
/* ── Typography helpers ── */
.display-large {
  font-family: var(--md-sys-typescale-display-large-font);
  font-size: var(--md-sys-typescale-display-large-size);
  line-height: var(--md-sys-typescale-display-large-line-height);
  font-weight: var(--md-sys-typescale-display-large-weight);
  letter-spacing: -0.25px;
}
.headline-large {
  font-size: var(--md-sys-typescale-headline-large-size);
  line-height: var(--md-sys-typescale-headline-large-line-height);
  font-weight: var(--md-sys-typescale-headline-large-weight);
}
.headline-medium {
  font-size: var(--md-sys-typescale-headline-medium-size);
  line-height: var(--md-sys-typescale-headline-medium-line-height);
  font-weight: 400;
}
.title-large {
  font-size: var(--md-sys-typescale-title-large-size);
  line-height: var(--md-sys-typescale-title-large-line-height);
  font-weight: var(--md-sys-typescale-title-large-weight);
}
.title-medium {
  font-size: var(--md-sys-typescale-title-medium-size);
  line-height: var(--md-sys-typescale-title-medium-line-height);
  font-weight: var(--md-sys-typescale-title-medium-weight);
}
.label-large {
  font-size: var(--md-sys-typescale-label-large-size);
  line-height: var(--md-sys-typescale-label-large-line-height);
  font-weight: var(--md-sys-typescale-label-large-weight);
  letter-spacing: 0.1px;
}
.label-medium {
  font-size: var(--md-sys-typescale-label-medium-size);
  line-height: var(--md-sys-typescale-label-medium-line-height);
  font-weight: var(--md-sys-typescale-label-medium-weight);
  letter-spacing: 0.5px;
}
.body-large {
  font-size: var(--md-sys-typescale-body-large-size);
  line-height: var(--md-sys-typescale-body-large-line-height);
  font-weight: var(--md-sys-typescale-body-large-weight);
}
.body-medium {
  font-size: var(--md-sys-typescale-body-medium-size);
  line-height: var(--md-sys-typescale-body-medium-line-height);
  font-weight: var(--md-sys-typescale-body-medium-weight);
}

/* ── Top App Bar ── */
.top-app-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--md-sys-color-surface-container);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}
.top-app-bar__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.wordmark {
  font-family: 'Bitter', serif;
  font-size: 26px;
  font-weight: 700;
  color: var(--md-sys-color-on-surface);
  letter-spacing: -0.5px;
  transition: color var(--md-sys-motion-duration-medium1) var(--md-sys-motion-easing-standard);
}
.wordmark:hover,
a.wordmark:hover {
  color: var(--md-sys-color-primary);
}
.wordmark:hover .wordmark__period {
  color: var(--md-sys-color-primary);
}
.wordmark__period {
  color: var(--md-sys-color-primary);
  transition: color var(--md-sys-motion-duration-medium1) var(--md-sys-motion-easing-standard);
}
.nav { display: flex; gap: 8px; }
.nav__link {
  font-size: var(--md-sys-typescale-label-large-size);
  font-weight: var(--md-sys-typescale-label-large-weight);
  color: var(--md-sys-color-on-surface-variant);
  padding: 8px 16px;
  border-radius: var(--md-sys-shape-corner-full);
  transition: background var(--md-sys-motion-duration-medium1) var(--md-sys-motion-easing-standard),
              color var(--md-sys-motion-duration-medium1) var(--md-sys-motion-easing-standard);
}
.nav__link:hover,
.nav__link--active {
  background: color-mix(in srgb, var(--md-sys-color-primary-container) 60%, transparent);
  color: var(--md-sys-color-on-primary-container);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: var(--md-sys-shape-corner-full);
  font-size: var(--md-sys-typescale-label-large-size);
  font-weight: var(--md-sys-typescale-label-large-weight);
  font-family: inherit;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: box-shadow var(--md-sys-motion-duration-medium1) var(--md-sys-motion-easing-standard),
              background var(--md-sys-motion-duration-medium1) var(--md-sys-motion-easing-standard);
}
.btn--filled {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
}
.btn--filled:hover {
  box-shadow: 0 1px 3px rgba(0,0,0,.2), 0 2px 6px rgba(0,0,0,.15);
  background: color-mix(in srgb, var(--md-sys-color-on-primary) 8%, var(--md-sys-color-primary));
  color: var(--md-sys-color-on-primary);
}
.btn--tonal {
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}
.btn--tonal:hover {
  box-shadow: 0 1px 3px rgba(0,0,0,.15);
  background: color-mix(in srgb, var(--md-sys-color-on-secondary-container) 8%, var(--md-sys-color-secondary-container));
  color: var(--md-sys-color-on-secondary-container);
}
.btn--outlined {
  background: transparent;
  color: var(--md-sys-color-primary);
  border: 1px solid var(--md-sys-color-outline);
}
.btn--outlined:hover {
  background: color-mix(in srgb, var(--md-sys-color-primary) 8%, transparent);
}
.btn--text {
  background: transparent;
  color: var(--md-sys-color-primary);
  padding: 10px 12px;
}
.btn--text:hover {
  background: color-mix(in srgb, var(--md-sys-color-primary) 8%, transparent);
}

/* ── Cards ── */
.card {
  background: var(--md-sys-color-surface-container-low);
  border-radius: var(--md-sys-shape-corner-large);
  overflow: hidden;
  transition: box-shadow var(--md-sys-motion-duration-medium1) var(--md-sys-motion-easing-standard),
              transform var(--md-sys-motion-duration-medium1) var(--md-sys-motion-easing-standard);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}
.card:hover {
  box-shadow: 0 2px 6px rgba(0,0,0,.12), 0 4px 12px rgba(0,0,0,.08);
  transform: translateY(-2px);
}
.card__media {
  aspect-ratio: 4/3;
  background: var(--md-sys-color-surface-variant);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.card__media img { width: 100%; height: 100%; object-fit: cover; }
.card__media-placeholder {
  font-size: 48px;
  color: var(--md-sys-color-on-surface-variant);
  opacity: 0.4;
}
.card__body { padding: 16px; flex: 1; display: flex; flex-direction: column; gap: 8px; }
.card__eyebrow {
  color: var(--md-sys-color-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.card__title { font-size: var(--md-sys-typescale-title-large-size); font-weight: 500; }
.card__meta { color: var(--md-sys-color-on-surface-variant); }
.card__footer { padding: 12px 16px 16px; display: flex; gap: 8px; flex-wrap: wrap; }

/* ── Chips ── */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: var(--md-sys-shape-corner-small);
  border: 1px solid var(--md-sys-color-outline);
  font-size: var(--md-sys-typescale-label-large-size);
  font-weight: var(--md-sys-typescale-label-large-weight);
  color: var(--md-sys-color-on-surface-variant);
  background: transparent;
  cursor: pointer;
  transition: background var(--md-sys-motion-duration-short2);
  font-family: inherit;
}
.chip:hover, .chip--selected {
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  border-color: transparent;
}

/* ── Section layout ── */
.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 64px 24px;
}
.section--surface-variant {
  max-width: 100%;
  background: var(--md-sys-color-surface-variant);
}
.section--surface-variant > * {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}
.section__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

/* ── Footer ── */
.footer {
  background: var(--md-sys-color-primary-container);
  border-top: 1px solid color-mix(in srgb, var(--md-sys-color-on-primary-container) 15%, transparent);
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--md-sys-color-on-primary-container);
}
.footer a { color: var(--md-sys-color-primary); }
.footer__copy { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; }

/* ── Material symbol icon placeholder ── */
.material-symbol {
  font-family: 'Google Sans', sans-serif;
  font-size: 48px;
  opacity: 0.3;
}

/* ── Responsive ── */
.scroll-hint { display: none !important; }

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

@media (max-width: 600px) {
  .scroll-hint {
    display: flex !important;
    justify-content: center;
    position: absolute;
    bottom: 20px;
    left: 0;
    right: 0;
    color: var(--md-sys-color-on-primary-container);
    opacity: 0.6;
    animation: bounce 1.8s ease-in-out infinite;
    transition: opacity 300ms ease;
  }
  .scroll-hint--hidden {
    opacity: 0;
    animation: none;
  }
}

@media (max-width: 600px) {
  .display-large { font-size: 40px; line-height: 48px; }
  .top-app-bar__inner { padding: 0 16px; }
  .section { padding: 40px 16px; }
  .nav__link { padding: 8px 12px; }
  .section__header { justify-content: center; text-align: center; }
}