:root {
  color-scheme: dark;
  --bg: #121212;
  --bg-header: #1a1a1a;
  --tile-bg: #1c1c1c;
  --text: #f2f2f2;
  --text-dim: #a9a9a9;
  --text-faint: #757575;
  --accent: #ffffff;
  --radius: 14px;
  --gap: 1.5rem;
  --row-unit: 8px;
  --font: 'Roboto', Helvetica, Arial, sans-serif;
  --header-height: 84px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-weight: 300;
  overflow-x: hidden;
}

a { color: inherit; }

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(20, 20, 20, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: transform 0.3s ease;
}

.site-header.hide {
  transform: translateY(-100%);
}

.site-header-inner {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  color: inherit;
  margin-right: auto;
}

.brand-logo {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  object-fit: cover;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--text);
}

.site-nav ul {
  list-style: none;
  display: flex;
  gap: 1.4rem;
  margin: 0;
  padding: 0;
}

.site-nav a {
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 300;
  color: var(--text);
  white-space: nowrap;
  transition: opacity 0.15s ease;
}

.site-nav a:hover {
  opacity: 0.7;
  text-decoration: underline;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}

.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

@media (max-width: 760px) {
  .menu-toggle { display: flex; }

  .site-nav {
    flex-basis: 100%;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }

  .site-nav.open {
    max-height: 260px;
  }

  .site-nav ul {
    flex-direction: column;
    gap: 0.2rem;
    padding-top: 0.6rem;
  }

  .site-nav a {
    display: block;
    padding: 0.6rem 0.2rem;
    font-size: 0.95rem;
  }
}

/* ---------- Masonry grid ---------- */

main {
  padding-bottom: 2rem;
  scroll-margin-top: var(--header-height);
}

.masonry {
  display: grid;
  grid-template-columns: repeat(var(--columns, 4), 1fr);
  grid-auto-rows: var(--row-unit);
  grid-auto-flow: row dense;
  gap: var(--gap);
  padding: var(--gap);
  max-width: 1900px;
  margin: 0 auto;
}

.tile {
  position: relative;
  grid-row: span var(--rows, 30);
  background: var(--tile-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.4s ease;
  opacity: 0;
  transform: translateY(12px);
}

.tile.in-view {
  opacity: 1;
  transform: translateY(0);
}

.tile:hover {
  transform: translateY(-2px) scale(1.015);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.45);
  z-index: 2;
}

.tile-media {
  position: relative;
  width: 100%;
  aspect-ratio: var(--ar, 16 / 9);
  background: linear-gradient(135deg, #1f1f1f, #262626);
  overflow: hidden;
}

.tile-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.35s ease;
}

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

.tile-body {
  padding: 1.3rem;
}

.tile-title {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
  font-weight: 500;
  color: #fff;
  line-height: 1.3;
}

.tile-excerpt {
  margin: 0;
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--text-dim);
  line-height: 1.45;
}

.tile-excerpt:empty {
  display: none;
}

/* ---------- Settings ---------- */

.settings-fab {
  position: fixed;
  right: 1.4rem;
  bottom: 1.4rem;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: none;
  background: #262626;
  color: #fff;
  font-size: 1.3rem;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.45);
  z-index: 200;
  transition: transform 0.15s ease, background 0.15s ease;
}

.settings-fab:hover {
  transform: rotate(25deg) scale(1.05);
  background: #333;
}

.settings-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 250;
}

.settings-panel {
  position: fixed;
  right: 1.4rem;
  bottom: 5.2rem;
  width: min(320px, calc(100vw - 2.8rem));
  background: #1c1c1c;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
  padding: 1.2rem 1.3rem 1.4rem;
  z-index: 260;
}

.settings-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.8rem;
}

.settings-panel-header h2 {
  font-size: 1rem;
  font-weight: 500;
  margin: 0;
}

.settings-close {
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 1rem;
  cursor: pointer;
  line-height: 1;
  padding: 0.2rem;
}

.settings-row {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 0.9rem;
}

.settings-row label {
  font-size: 0.85rem;
  color: var(--text-dim);
  display: flex;
  justify-content: space-between;
}

.settings-row input[type="range"] {
  width: 100%;
  accent-color: #fff;
}

.settings-hint {
  font-size: 0.78rem;
  color: var(--text-faint);
  line-height: 1.4;
  margin: 0;
}

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

.site-footer {
  text-align: center;
  padding: 2rem 1rem 3rem;
  color: var(--text-faint);
  font-size: 0.8rem;
}

.site-footer a {
  color: var(--text-dim);
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}

/* ---------- Responsive tweaks ---------- */

@media (max-width: 560px) {
  .masonry { --gap: 1rem; }
  .tile-body { padding: 0.9rem 1rem 1.1rem; }
}