:root {
  --bg: #0d1117;
  --card: #0f1723;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #7c3aed;
  --accent-2: #38bdf8;
  --border: rgba(148, 163, 184, 0.2);
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: radial-gradient(circle at 20% 20%, rgba(124, 58, 237, 0.08), transparent 30%),
    radial-gradient(circle at 80% 0%, rgba(56, 189, 248, 0.1), transparent 32%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
}

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

a:hover {
  color: var(--accent-2);
}

main {
  width: min(1100px, 94vw);
  margin: 80px auto 120px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(13, 17, 23, 0.82);
  border-bottom: 1px solid var(--border);
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.topbar__brand {
  font-weight: 700;
  letter-spacing: 0.5px;
}

.topbar__nav {
  display: flex;
  gap: 16px;
}

.topbar__link {
  padding: 8px 12px;
  border-radius: 999px;
  transition: background 150ms ease, color 150ms ease;
}

.topbar__link--active {
  background: rgba(124, 58, 237, 0.18);
  color: #fff;
}

.topbar__link:hover,
.topbar__link:focus-visible {
  background: rgba(124, 58, 237, 0.16);
  outline: none;
}

.hero {
  background: linear-gradient(120deg, rgba(124, 58, 237, 0.16), rgba(56, 189, 248, 0.12));
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px;
  box-shadow: var(--shadow);
}

.hero--subpage {
  padding: 32px;
}

.hero__content h1 {
  margin: 8px 0 10px;
  font-size: clamp(26px, 3vw, 34px);
}

.hero__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.eyebrow {
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 1.2px;
  color: var(--accent-2);
  margin: 0;
}

.lede {
  color: var(--muted);
  max-width: 780px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px;
  box-shadow: var(--shadow);
}

.card__header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  color: var(--text);
  transition: transform 150ms ease, box-shadow 150ms ease, background 150ms ease;
}

.button--primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  border: none;
  color: #fff;
  box-shadow: 0 10px 30px rgba(124, 58, 237, 0.45);
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 20px 35px rgba(0, 0, 0, 0.35);
  outline: none;
}

.pager {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.pager__button {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 12px;
  cursor: pointer;
  transition: background 150ms ease, transform 150ms ease;
}

.pager__button:hover,
.pager__button:focus-visible {
  background: rgba(124, 58, 237, 0.18);
  outline: none;
  transform: translateY(-1px);
}

.pager__button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.pager__status {
  display: flex;
  flex-direction: column;
  color: var(--muted);
  min-width: 180px;
}

#month-label {
  color: var(--text);
  font-weight: 600;
}

.book {
  position: relative;
  perspective: 1400px;
  margin-top: 12px;
  background: radial-gradient(circle at 20% 20%, rgba(124, 58, 237, 0.08), rgba(0, 0, 0, 0)),
    rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
  overflow: hidden;
}

.page {
  position: relative;
  width: 100%;
  min-height: 420px;
  transform-style: preserve-3d;
}

.page__inner {
  background: linear-gradient(120deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.05));
  border-radius: 16px;
  border: 1px solid var(--border);
  padding: 22px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 18px 50px rgba(0, 0, 0, 0.32);
  backface-visibility: hidden;
}

.page.turn-next .page__inner {
  animation: flipNext 0.8s ease;
}

.page.turn-prev .page__inner {
  animation: flipPrev 0.8s ease;
}

.page__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.page__shadow {
  position: absolute;
  inset: 14px;
  border-radius: 16px;
  background: radial-gradient(circle at 30% 30%, rgba(0, 0, 0, 0.15), rgba(0, 0, 0, 0));
  filter: blur(24px);
  pointer-events: none;
  opacity: 0;
  transition: opacity 300ms ease;
}

.page.turn-next ~ .page__shadow,
.page.turn-prev ~ .page__shadow {
  opacity: 0.9;
}

.photo {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 220px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.35);
}

.photo__frame {
  position: relative;
  padding-top: 70%;
  background: #020617;
  cursor: pointer;
  outline: none;
}

.photo__frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.photo__frame:focus-visible {
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.6);
}

.photo__meta {
  padding: 12px;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.photo__caption {
  color: var(--text);
  font-weight: 600;
  margin: 0;
}

.photo__notes {
  margin: 0;
  line-height: 1.3;
}

.placeholder {
  min-height: 160px;
  border: 1px dashed var(--border);
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: var(--muted);
}

.page__indicators {
  margin-top: 12px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  color: var(--muted);
}

.page__indicators button {
  width: 14px;
  height: 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  cursor: pointer;
  padding: 0;
  transition: transform 120ms ease, background 120ms ease;
}

.page__indicators button.active {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  border: none;
  transform: translateY(-1px);
}

.lightbox__backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
  z-index: 20;
}

.lightbox {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
  z-index: 21;
}

.lightbox.open,
.lightbox__backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox__content {
  background: #0b1220;
  border-radius: 16px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 16px;
  max-width: min(900px, 90vw);
  max-height: 80vh;
  display: grid;
  gap: 12px;
}

.lightbox__content img {
  width: 100%;
  max-height: 65vh;
  object-fit: contain;
  border-radius: 12px;
}

.lightbox__meta {
  color: var(--muted);
}

.lightbox__close {
  position: absolute;
  top: 20px;
  right: 24px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  width: 38px;
  height: 38px;
  font-size: 20px;
  cursor: pointer;
}

.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border);
  color: var(--text);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
}

.lightbox__nav--prev {
  left: 28px;
}

.lightbox__nav--next {
  right: 28px;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.form__control {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
}

.form__control input,
.form__control select,
.form__control textarea {
  border-radius: 12px;
  padding: 12px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

.form__control--file {
  border: 1px dashed var(--border);
  padding: 12px;
}

.form__footer {
  display: flex;
  justify-content: flex-end;
}

.button__spinner {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: #fff;
  display: none;
  animation: spin 1s linear infinite;
}

.loading .button__spinner {
  display: inline-block;
}

.status {
  min-height: 20px;
  color: var(--muted);
}

.no-scroll {
  overflow: hidden;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes flipNext {
  0% {
    transform: rotateY(0deg) scale(1);
    box-shadow: var(--shadow);
  }
  45% {
    transform: rotateY(-60deg) scale(0.985);
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  }
  100% {
    transform: rotateY(0deg) scale(1);
    box-shadow: var(--shadow);
  }
}

@keyframes flipPrev {
  0% {
    transform: rotateY(0deg) scale(1);
    box-shadow: var(--shadow);
  }
  45% {
    transform: rotateY(60deg) scale(0.985);
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  }
  100% {
    transform: rotateY(0deg) scale(1);
    box-shadow: var(--shadow);
  }
}

@media (max-width: 700px) {
  main {
    margin-top: 60px;
  }

  .hero,
  .card {
    padding: 20px;
  }

  .page__grid {
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  }

  .lightbox__nav--prev {
    left: 12px;
  }
  .lightbox__nav--next {
    right: 12px;
  }
}