Game — Patch Notes / Changelog Layout

:root {
  --bg: #0a0b10;
  --bg-2: #12131c;
  --panel: #171926;
  --panel-2: #1f2233;
  --text: #e7e9f3;
  --muted: #9aa0bf;
  --line: rgba(231, 233, 243, 0.1);
  --line-2: rgba(231, 233, 243, 0.18);
  --accent: #00e5ff;
  --accent-2: #7c4dff;
  --accent-3: #ff3d71;
  --success: #36e27a;
  --warn: #ffc857;
  --danger: #ff4d4d;
  --glow: 0 0 18px rgba(0, 229, 255, 0.45);
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --font-display: "Orbitron", sans-serif;
  --font-body: "Inter", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background:
    radial-gradient(1100px 500px at 85% -10%, rgba(124, 77, 255, 0.12), transparent 60%),
    radial-gradient(900px 420px at 0% 0%, rgba(0, 229, 255, 0.08), transparent 55%),
    var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

.page {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px 20px 56px;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

/* ===== Header ===== */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1rem;
  color: #04141a;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%);
  box-shadow: var(--glow);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-game {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.3rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-sub {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
  background: var(--panel);
  border: 1px solid var(--line-2);
  padding: 7px 12px;
  border-radius: 999px;
}

.live-badge strong {
  color: var(--success);
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.06em;
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 10px rgba(54, 226, 122, 0.8);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.8); }
}

/* ===== Buttons ===== */
.btn {
  border: 1px solid transparent;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 11px 22px;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  transition: filter 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #00b3d6);
  color: #04141a;
  box-shadow: var(--glow);
}

.btn-primary:hover {
  filter: brightness(1.12);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(1px);
}

.btn-ghost {
  background: transparent;
  border-color: var(--line-2);
  color: var(--muted);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.25);
}

.btn-small {
  font-size: 0.68rem;
  padding: 9px 14px;
  width: 100%;
}

/* ===== Toolbar ===== */
.toolbar {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.search-wrap {
  position: relative;
  flex: 1 1 260px;
  min-width: 220px;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  background: var(--panel);
  border: 1px solid var(--line-2);
  border-radius: var(--r-md);
  color: var(--text);
  font: inherit;
  font-size: 0.9rem;
  padding: 11px 36px 11px 36px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.search-input::placeholder {
  color: var(--muted);
  opacity: 0.7;
}

.search-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.18);
}

.search-input::-webkit-search-cancel-button {
  display: none;
}

.search-clear {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  border: none;
  border-radius: 50%;
  background: var(--panel-2);
  color: var(--muted);
  font-size: 1rem;
  line-height: 1;
  display: grid;
  place-items: center;
}

.search-clear:hover {
  color: var(--text);
  background: rgba(255, 61, 113, 0.25);
}

.chip-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.chip {
  background: var(--panel);
  border: 1px solid var(--line-2);
  color: var(--muted);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  padding: 8px 16px;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  transition: color 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
}

.chip:hover {
  color: var(--text);
  border-color: var(--accent);
}

.chip[aria-pressed="true"] {
  color: #04141a;
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 14px rgba(0, 229, 255, 0.4);
}

.chip-added[aria-pressed="true"] {
  background: var(--success);
  border-color: var(--success);
  box-shadow: 0 0 14px rgba(54, 226, 122, 0.4);
}

.chip-changed[aria-pressed="true"] {
  background: var(--accent-2);
  border-color: var(--accent-2);
  color: #fff;
  box-shadow: 0 0 14px rgba(124, 77, 255, 0.45);
}

.chip-fixed[aria-pressed="true"] {
  background: var(--warn);
  border-color: var(--warn);
  box-shadow: 0 0 14px rgba(255, 200, 87, 0.4);
}

.chip-balance[aria-pressed="true"] {
  background: var(--accent-3);
  border-color: var(--accent-3);
  color: #fff;
  box-shadow: 0 0 14px rgba(255, 61, 113, 0.45);
}

.result-count {
  margin: 0;
  width: 100%;
  color: var(--muted);
  font-size: 0.78rem;
  min-height: 1.2em;
}

.result-count strong {
  color: var(--accent);
}

/* ===== Layout ===== */
.layout {
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 22px;
  align-items: start;
}

/* ===== Version rail ===== */
.version-rail {
  background: linear-gradient(180deg, var(--panel), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 16px 14px;
  position: sticky;
  top: 16px;
}

.rail-title {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 12px 4px;
}

.version-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.version-btn {
  width: 100%;
  text-align: left;
  background: transparent;
  border: 1px solid transparent;
  border-left: 3px solid transparent;
  border-radius: var(--r-md);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  transition: background 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease;
}

.version-btn:hover {
  background: var(--panel-2);
  border-color: var(--line);
}

.version-btn[aria-current="true"] {
  background: linear-gradient(90deg, rgba(0, 229, 255, 0.12), transparent 70%);
  border-color: var(--line);
  border-left-color: var(--accent);
  box-shadow: inset 0 0 24px rgba(0, 229, 255, 0.06);
}

.version-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.version-btn[aria-current="true"] .version-num {
  color: var(--accent);
  text-shadow: 0 0 12px rgba(0, 229, 255, 0.5);
}

.version-date {
  font-size: 0.72rem;
  color: var(--muted);
}

.version-kind {
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 999px;
  border: 1px solid currentColor;
}

.kind-major { color: var(--accent); }
.kind-hotfix { color: var(--accent-3); }
.kind-update { color: var(--accent-2); }

.rail-foot {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

/* ===== Notes pane ===== */
.notes-pane {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.patch-head {
  background: linear-gradient(135deg, var(--panel) 0%, var(--panel-2) 100%);
  border: 1px solid var(--line-2);
  border-radius: var(--r-lg);
  padding: 22px 24px;
  position: relative;
  overflow: hidden;
}

.patch-head::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(420px 140px at 100% 0%, rgba(0, 229, 255, 0.12), transparent 70%);
  pointer-events: none;
}

.patch-eyebrow {
  font-family: var(--font-display);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 6px;
}

.patch-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 3.4vw, 2rem);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin: 0 0 6px;
}

.patch-meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.patch-meta strong {
  color: var(--text);
}

/* Highlights pinned block */
.highlights {
  background: linear-gradient(135deg, rgba(124, 77, 255, 0.14), rgba(0, 229, 255, 0.07)), var(--panel);
  border: 1px solid rgba(124, 77, 255, 0.45);
  border-radius: var(--r-lg);
  padding: 18px 22px;
  box-shadow: 0 0 24px rgba(124, 77, 255, 0.18);
}

.highlights-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.pin-badge {
  font-family: var(--font-display);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #fff;
  background: var(--accent-2);
  padding: 4px 10px;
  clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
  box-shadow: 0 0 12px rgba(124, 77, 255, 0.55);
}

.highlights-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0;
}

.highlights-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.highlights-list li {
  position: relative;
  padding-left: 22px;
  font-size: 0.9rem;
}

.highlights-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.48em;
  width: 9px;
  height: 9px;
  background: var(--accent);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
  box-shadow: 0 0 8px rgba(0, 229, 255, 0.7);
}

/* ===== Note sections ===== */
.note-section {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: border-color 0.18s ease;
}

.note-section:hover {
  border-color: var(--line-2);
}

.section-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  background: transparent;
  border: none;
  padding: 15px 20px;
  text-align: left;
}

.section-toggle:hover {
  background: rgba(231, 233, 243, 0.03);
}

.section-tag {
  font-family: var(--font-display);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 5px 12px;
  clip-path: polygon(7px 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%, 0 7px);
}

.tag-added {
  color: #03150a;
  background: var(--success);
  box-shadow: 0 0 12px rgba(54, 226, 122, 0.4);
}

.tag-changed {
  color: #fff;
  background: var(--accent-2);
  box-shadow: 0 0 12px rgba(124, 77, 255, 0.45);
}

.tag-fixed {
  color: #1c1503;
  background: var(--warn);
  box-shadow: 0 0 12px rgba(255, 200, 87, 0.4);
}

.tag-balance {
  color: #fff;
  background: var(--accent-3);
  box-shadow: 0 0 12px rgba(255, 61, 113, 0.45);
}

.section-count {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
}

.section-caret {
  margin-left: auto;
  color: var(--muted);
  transition: transform 0.22s ease;
  flex: none;
}

.section-toggle[aria-expanded="false"] .section-caret {
  transform: rotate(-90deg);
}

.section-body {
  padding: 4px 20px 18px;
  border-top: 1px solid var(--line);
}

.section-body[hidden] {
  display: none;
}

.entry-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.entry-list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 0.88rem;
}

.entry-list li:last-child {
  border-bottom: none;
}

.entry-scope {
  flex: none;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.35);
  border-radius: var(--r-sm);
  padding: 2px 8px;
}

.entry-text {
  color: var(--text);
}

.entry-text mark {
  background: rgba(0, 229, 255, 0.28);
  color: var(--accent);
  border-radius: 3px;
  padding: 0 2px;
  font-weight: 600;
}

/* Empty state */
.empty-state {
  background: var(--panel);
  border: 1px dashed var(--line-2);
  border-radius: var(--r-lg);
  padding: 42px 24px;
  text-align: center;
  color: var(--muted);
}

.empty-state .empty-icon {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--accent-3);
  display: block;
  margin-bottom: 8px;
}

.empty-state p {
  margin: 0;
  font-size: 0.9rem;
}

/* ===== Footer ===== */
.site-footer {
  margin-top: 36px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
  color: var(--muted);
  font-size: 0.75rem;
  text-align: center;
}

.site-footer p {
  margin: 0;
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  transform: translate(-50%, 16px);
  background: var(--panel-2);
  border: 1px solid var(--accent);
  box-shadow: var(--glow);
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 12px 20px;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  max-width: min(92vw, 460px);
  text-align: center;
  z-index: 50;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ===== Responsive ===== */
@media (max-width: 820px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .version-rail {
    position: static;
  }

  .version-list {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .version-list li {
    flex: 1 1 140px;
  }

  .version-btn {
    border-left: none;
    border-bottom: 3px solid transparent;
  }

  .version-btn[aria-current="true"] {
    border-bottom-color: var(--accent);
  }
}

@media (max-width: 520px) {
  .page {
    padding: 16px 12px 44px;
  }

  .site-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-meta {
    width: 100%;
    justify-content: space-between;
  }

  .btn-primary {
    padding: 10px 16px;
    font-size: 0.74rem;
  }

  .patch-head {
    padding: 18px 16px;
  }

  .highlights {
    padding: 14px 16px;
  }

  .section-toggle {
    padding: 13px 14px;
    flex-wrap: wrap;
  }

  .section-body {
    padding: 4px 14px 14px;
  }

  .entry-list li {
    flex-direction: column;
    gap: 4px;
  }

  .chip {
    padding: 7px 12px;
    font-size: 0.72rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* Hollow Reign — Patch Notes / Changelog (fictional demo data) */
(function () {
  "use strict";

  /* ===== Data ===== */
  var PATCHES = [
    {
      id: "1.4.2",
      kind: "hotfix",
      codename: "Ashen Tides Hotfix",
      date: "June 9, 2026",
      summary: "Emergency fixes for the Drowned Bastion raid and co-op desync reported after 1.4.0.",
      highlights: [
        "Drowned Bastion raid checkpoints now save correctly between sessions.",
        "Co-op desync during the Tidecaller boss phase resolved.",
        "Crash on launch for ultrawide displays fixed."
      ],
      sections: {
        added: [],
        changed: [
          { scope: "Netcode", text: "Reduced position-sync interval from 120ms to 60ms in 4-player co-op." }
        ],
        fixed: [
          { scope: "Raid", text: "Drowned Bastion checkpoint flags no longer reset after fast travel." },
          { scope: "Co-op", text: "Fixed clients desyncing when the Tidecaller submerges during phase two." },
          { scope: "Crash", text: "Fixed a crash on launch at 3440x1440 and wider resolutions." },
          { scope: "UI", text: "Patch banner no longer overlaps the minimap on the HUD scale 120% preset." }
        ],
        balance: [
          { scope: "Enemies", text: "Tidecaller adds spawn 15% slower on Apocalypse difficulty." }
        ]
      }
    },
    {
      id: "1.4.0",
      kind: "major",
      codename: "Ashen Tides",
      date: "June 2, 2026",
      summary: "The Drowned Bastion raid, the Stormcaller class, crossplay parties, and a full weapon-tuning pass.",
      highlights: [
        "New 4-player raid: the Drowned Bastion, with three bosses and a hidden vault.",
        "New playable class: Stormcaller — channel tempest sigils to chain lightning between marked foes.",
        "Crossplay parties between PC, console, and cloud are now live.",
        "Photo mode ships with 12 filters and free-cam orbit controls."
      ],
      sections: {
        added: [
          { scope: "Raid", text: "Drowned Bastion raid (Power 540+): three encounters, vault puzzle, and the Leviathan-class boss Maelketh." },
          { scope: "Classes", text: "Stormcaller class with two subclass trees: Tempest Herald and Gravewind." },
          { scope: "Weapons", text: "Six new weapons including the Riptide Crossbow and the greatblade Hullsplitter." },
          { scope: "Social", text: "Crossplay party finder with role tags (Tank / Support / Burst)." },
          { scope: "World", text: "Photo mode: free cam, depth of field, and 12 color-grade filters." },
          { scope: "Audio", text: "New dynamic raid score by the Nullforge audio team, with per-phase stems." }
        ],
        changed: [
          { scope: "UI", text: "Inventory grid rebuilt: drag-to-compare, loadout pinning, and bulk salvage." },
          { scope: "World", text: "Hollowmere hub re-lit at night; vendor stalls relocated near the fast-travel obelisk." },
          { scope: "Performance", text: "Shader pre-compilation now runs during the first loading screen, cutting hitching in Emberfall by ~40%." },
          { scope: "Quests", text: "Side-quest tracker now groups objectives by region instead of acquisition order." }
        ],
        fixed: [
          { scope: "Weapons", text: "Riptide Crossbow bolts no longer pass through Maelketh's shield during the flood phase." },
          { scope: "Quests", text: "Fixed 'Embers of the Old King' failing to advance if the brazier was lit before the dialogue ended." },
          { scope: "Co-op", text: "Revive prompts now appear reliably when a downed ally is on a slope." },
          { scope: "Audio", text: "Footstep audio no longer doubles when sprinting on metal grates." },
          { scope: "UI", text: "Fixed overlapping damage numbers when more than eight enemies are tagged." }
        ],
        balance: [
          { scope: "Weapons", text: "Riptide Crossbow: base damage 64 → 58, reload speed +10%." },
          { scope: "Classes", text: "Stormcaller 'Chain Surge' bounce count 5 → 4 in PvP only." },
          { scope: "Classes", text: "Warden 'Bulwark Oath' damage reduction 30% → 26%; cooldown 22s → 18s." },
          { scope: "Enemies", text: "Hollow Sentinels telegraph their slam 0.3s longer on all difficulties." },
          { scope: "Economy", text: "Vault clears award 25% more Ashmarks on first weekly completion." }
        ]
      }
    },
    {
      id: "1.3.5",
      kind: "update",
      codename: "Quality of Reign",
      date: "April 21, 2026",
      summary: "A quality-of-life pass: controller remapping, stash search, and dozens of community-reported fixes.",
      highlights: [
        "Full controller remapping with three savable presets.",
        "Stash search and sort-by-power arrive for all storage tabs."
      ],
      sections: {
        added: [
          { scope: "UI", text: "Stash search bar with fuzzy matching and rarity filters." },
          { scope: "Input", text: "Controller remapping with three savable presets per profile." },
          { scope: "World", text: "Training dummies in Hollowmere now display live DPS readouts." }
        ],
        changed: [
          { scope: "UI", text: "Vendor buyback tab retains items for 7 days, up from 24 hours." },
          { scope: "Performance", text: "Texture streaming pool auto-scales on 8GB GPUs, reducing pop-in at Emberfall gates." }
        ],
        fixed: [
          { scope: "Quests", text: "'The Salt Choir' no longer blocks progress if all three bells are rung out of order." },
          { scope: "Weapons", text: "Hullsplitter heavy attack correctly consumes one stamina bar instead of two." },
          { scope: "Co-op", text: "Trade window no longer cancels when either player opens the map." },
          { scope: "UI", text: "Fixed subtitle timing drift in pre-rendered cutscenes above 60 fps." }
        ],
        balance: [
          { scope: "Economy", text: "Salvage yields +1 Ember Core on Legendary items." },
          { scope: "Classes", text: "Gravewind dodge-cancel window 0.2s → 0.25s." }
        ]
      }
    },
    {
      id: "1.3.0",
      kind: "major",
      codename: "Hollow Reign: Emberfall",
      date: "March 3, 2026",
      summary: "The Emberfall region, mounted traversal, and the seasonal Ashen Vanguard event.",
      highlights: [
        "New region: Emberfall — a burning caldera city with 14 side quests.",
        "Mounts arrive: tame and ride the cinder-wolves of the ash plains.",
        "Seasonal event: Ashen Vanguard, with an exclusive armor set."
      ],
      sections: {
        added: [
          { scope: "World", text: "Emberfall region: caldera city, ash plains, and the Kiln-Warden stronghold." },
          { scope: "World", text: "Mount system with three tamable cinder-wolf variants and mounted sprint." },
          { scope: "Events", text: "Ashen Vanguard seasonal event with weekly war-effort milestones." },
          { scope: "Weapons", text: "Flame-forged weapon tier with heat buildup mechanics." }
        ],
        changed: [
          { scope: "UI", text: "World map rebuilt with region zoom levels and custom pins (up to 20)." },
          { scope: "Quests", text: "Main story quests now show recommended Power on the accept screen." }
        ],
        fixed: [
          { scope: "World", text: "Players can no longer clip through the Hollowmere aqueduct using the grapple." },
          { scope: "Audio", text: "Mount footsteps respect surface materials (ash, stone, water)." },
          { scope: "Crash", text: "Fixed a rare crash when alt-tabbing during the Emberfall arrival cutscene." }
        ],
        balance: [
          { scope: "Enemies", text: "Kiln-Warden elite health −12% in solo play; unchanged in co-op." },
          { scope: "Weapons", text: "Heat buildup decays 20% faster out of combat." },
          { scope: "Economy", text: "Mount taming reagents drop from all ash-plain bounties, not only world bosses." }
        ]
      }
    },
    {
      id: "1.2.1",
      kind: "hotfix",
      codename: "Stability Hotfix",
      date: "January 19, 2026",
      summary: "Targeted crash and progression fixes following the Hollow Depths update.",
      highlights: [
        "Fixed the most-reported crash in the Hollow Depths elevator sequence."
      ],
      sections: {
        added: [],
        changed: [
          { scope: "Performance", text: "Reduced VRAM usage in the Hollow Depths by streaming distant geometry tiers." }
        ],
        fixed: [
          { scope: "Crash", text: "Fixed a crash during the Hollow Depths elevator descent on DX12." },
          { scope: "Quests", text: "'Beneath the Reign' boss door now opens if the player dies during the key animation." },
          { scope: "UI", text: "Fixed the skill tree tooltip lingering after closing the menu with a controller." }
        ],
        balance: []
      }
    },
    {
      id: "1.2.0",
      kind: "update",
      codename: "Hollow Depths",
      date: "January 12, 2026",
      summary: "The Hollow Depths endgame dungeon, weekly mutators, and leaderboards.",
      highlights: [
        "Endgame dungeon: the Hollow Depths, with rotating weekly mutators.",
        "Region leaderboards for fastest clears, solo and co-op."
      ],
      sections: {
        added: [
          { scope: "Dungeon", text: "Hollow Depths endgame dungeon with five floors and weekly mutators." },
          { scope: "Social", text: "Clear-time leaderboards (solo / duo / full party) per region." },
          { scope: "UI", text: "Death recap screen showing the last three damage sources." }
        ],
        changed: [
          { scope: "World", text: "Fast travel between discovered obelisks is now free below Power 300." },
          { scope: "UI", text: "Damage numbers can be set to Compact, Full, or Off." }
        ],
        fixed: [
          { scope: "Weapons", text: "Charged bow shots no longer lose charge when opening doors." },
          { scope: "Co-op", text: "Party leader migration no longer drops the dungeon mutator state." }
        ],
        balance: [
          { scope: "Enemies", text: "Depths mutator 'Frenzied' attack-speed bonus 35% → 25%." },
          { scope: "Classes", text: "Tempest Herald lightning DoT can now crit; base tick damage −8%." }
        ]
      }
    }
  ];

  var SECTION_META = [
    { key: "added", label: "Added", tagClass: "tag-added" },
    { key: "changed", label: "Changed", tagClass: "tag-changed" },
    { key: "fixed", label: "Fixed", tagClass: "tag-fixed" },
    { key: "balance", label: "Balance", tagClass: "tag-balance" }
  ];

  var KIND_LABEL = { major: "Major", hotfix: "Hotfix", update: "Update" };

  /* ===== State ===== */
  var state = {
    versionId: PATCHES[0].id,
    category: "all",
    query: ""
  };

  /* ===== Element refs ===== */
  var versionList = document.getElementById("version-list");
  var notesPane = document.getElementById("notes-pane");
  var searchInput = document.getElementById("search-input");
  var searchClear = document.getElementById("search-clear");
  var chipRow = document.getElementById("chip-row");
  var resultCount = document.getElementById("result-count");
  var toastEl = document.getElementById("toast");

  /* ===== Helpers ===== */
  var toastTimer = null;
  function toast(msg) {
    toastEl.textContent = msg;
    toastEl.classList.add("show");
    clearTimeout(toastTimer);
    toastTimer = setTimeout(function () {
      toastEl.classList.remove("show");
    }, 2400);
  }

  function escapeHtml(str) {
    return str.replace(/[&<>"']/g, function (ch) {
      return { "&": "&amp;", "<": "&lt;", ">": "&gt;", '"': "&quot;", "'": "&#39;" }[ch];
    });
  }

  function escapeRegExp(str) {
    return str.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
  }

  /** Escape text and wrap query matches in <mark>. */
  function markText(text, query) {
    var safe = escapeHtml(text);
    if (!query) return safe;
    var re = new RegExp("(" + escapeRegExp(escapeHtml(query)) + ")", "gi");
    return safe.replace(re, "<mark>$1</mark>");
  }

  function matchesQuery(entry, query) {
    if (!query) return true;
    var q = query.toLowerCase();
    return (
      entry.text.toLowerCase().indexOf(q) !== -1 ||
      entry.scope.toLowerCase().indexOf(q) !== -1
    );
  }

  function getPatch(id) {
    for (var i = 0; i < PATCHES.length; i++) {
      if (PATCHES[i].id === id) return PATCHES[i];
    }
    return PATCHES[0];
  }

  /* ===== Render: version rail ===== */
  function renderVersionList() {
    versionList.innerHTML = PATCHES.map(function (p) {
      var current = p.id === state.versionId;
      return (
        '<li>' +
        '<button class="version-btn" type="button" data-version="' + p.id + '" aria-current="' + current + '">' +
        '<span class="version-num">v' + p.id +
        ' <span class="version-kind kind-' + p.kind + '">' + KIND_LABEL[p.kind] + "</span></span>" +
        '<span class="version-date">' + escapeHtml(p.date) + "</span>" +
        "</button></li>"
      );
    }).join("");
  }

  /* ===== Render: notes pane ===== */
  function renderNotes() {
    var patch = getPatch(state.versionId);
    var query = state.query.trim();
    var totalShown = 0;
    var html = "";

    // Patch header
    html +=
      '<header class="patch-head">' +
      '<p class="patch-eyebrow">Patch ' + patch.id + " · " + KIND_LABEL[patch.kind] + "</p>" +
      '<h1 class="patch-title">' + escapeHtml(patch.codename) + "</h1>" +
      '<p class="patch-meta">Released <strong>' + escapeHtml(patch.date) + "</strong> — " +
      escapeHtml(patch.summary) + "</p>" +
      "</header>";

    // Highlights (only when not searching/filtering away)
    if (!query && state.category === "all" && patch.highlights.length) {
      html +=
        '<section class="highlights" aria-label="Patch highlights">' +
        '<div class="highlights-head">' +
        '<span class="pin-badge">Pinned</span>' +
        '<h2 class="highlights-title">Highlights</h2>' +
        "</div>" +
        '<ul class="highlights-list">' +
        patch.highlights.map(function (h) {
          return "<li>" + escapeHtml(h) + "</li>";
        }).join("") +
        "</ul></section>";
    }

    // Sections
    SECTION_META.forEach(function (meta) {
      if (state.category !== "all" && state.category !== meta.key) return;
      var entries = patch.sections[meta.key].filter(function (e) {
        return matchesQuery(e, query);
      });
      if (!entries.length) return;
      totalShown += entries.length;

      html +=
        '<section class="note-section" data-section="' + meta.key + '">' +
        '<h2 style="margin:0">' +
        '<button class="section-toggle" type="button" aria-expanded="true" aria-controls="body-' + meta.key + '">' +
        '<span class="section-tag ' + meta.tagClass + '">' + meta.label + "</span>" +
        '<span class="section-count">' + entries.length +
        (entries.length === 1 ? " entry" : " entries") + "</span>" +
        '<svg class="section-caret" viewBox="0 0 24 24" width="18" height="18" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><polyline points="6 9 12 15 18 9"></polyline></svg>' +
        "</button></h2>" +
        '<div class="section-body" id="body-' + meta.key + '">' +
        '<ul class="entry-list">' +
        entries.map(function (e) {
          return (
            "<li>" +
            '<span class="entry-scope">' + escapeHtml(e.scope) + "</span>" +
            '<span class="entry-text">' + markText(e.text, query) + "</span>" +
            "</li>"
          );
        }).join("") +
        "</ul></div></section>";
    });

    // Empty state
    if (totalShown === 0) {
      html +=
        '<div class="empty-state">' +
        '<span class="empty-icon" aria-hidden="true">∅</span>' +
        "<p>No entries match " +
        (query ? "&ldquo;" + escapeHtml(query) + "&rdquo;" : "this filter") +
        " in patch " + patch.id + ". Try another keyword or category.</p>" +
        "</div>";
    }

    notesPane.innerHTML = html;

    // Result counter
    if (query || state.category !== "all") {
      resultCount.innerHTML =
        "Showing <strong>" + totalShown + "</strong> " +
        (totalShown === 1 ? "entry" : "entries") +
        (state.category !== "all" ? " in <strong>" + state.category + "</strong>" : "") +
        (query ? ' matching &ldquo;<strong>' + escapeHtml(query) + "</strong>&rdquo;" : "") +
        " — patch " + patch.id;
    } else {
      resultCount.textContent = "";
    }
  }

  function render() {
    renderVersionList();
    renderNotes();
  }

  /* ===== Events ===== */
  versionList.addEventListener("click", function (ev) {
    var btn = ev.target.closest(".version-btn");
    if (!btn) return;
    var id = btn.getAttribute("data-version");
    if (id === state.versionId) return;
    state.versionId = id;
    render();
    var patch = getPatch(id);
    toast("Viewing patch " + patch.id + " — " + patch.codename);
  });

  chipRow.addEventListener("click", function (ev) {
    var chip = ev.target.closest(".chip");
    if (!chip) return;
    state.category = chip.getAttribute("data-cat");
    Array.prototype.forEach.call(chipRow.querySelectorAll(".chip"), function (c) {
      c.setAttribute("aria-pressed", String(c === chip));
    });
    renderNotes();
  });

  searchInput.addEventListener("input", function () {
    state.query = searchInput.value;
    searchClear.hidden = searchInput.value.length === 0;
    renderNotes();
  });

  searchInput.addEventListener("keydown", function (ev) {
    if (ev.key === "Escape" && searchInput.value) {
      searchInput.value = "";
      state.query = "";
      searchClear.hidden = true;
      renderNotes();
    }
  });

  searchClear.addEventListener("click", function () {
    searchInput.value = "";
    state.query = "";
    searchClear.hidden = true;
    renderNotes();
    searchInput.focus();
  });

  // Collapsible sections (delegated — pane re-renders often)
  notesPane.addEventListener("click", function (ev) {
    var toggle = ev.target.closest(".section-toggle");
    if (!toggle) return;
    var expanded = toggle.getAttribute("aria-expanded") === "true";
    toggle.setAttribute("aria-expanded", String(!expanded));
    var body = document.getElementById(toggle.getAttribute("aria-controls"));
    if (body) body.hidden = expanded;
  });

  document.getElementById("btn-play").addEventListener("click", function () {
    toast("Launching Hollow Reign… (demo only)");
  });

  document.getElementById("btn-rss").addEventListener("click", function () {
    toast("Subscribed to patch-note updates (demo only)");
  });

  /* ===== Init ===== */
  document.getElementById("live-version").textContent = PATCHES[0].id;
  render();
})();

<!doctype html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>Hollow Reign — Patch Notes</title>
  <link rel="preconnect" href="https://fonts.googleapis.com" />
  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
  <link href="https://fonts.googleapis.com/css2?family=Orbitron:wght@500;700;900&family=Inter:wght@400;500;600;700;800&display=swap" rel="stylesheet" />
  <link rel="stylesheet" href="style.css" />
</head>
<body>
  <div class="page">

    <!-- ===== Header ===== -->
    <header class="site-header">
      <div class="brand">
        <div class="brand-mark" aria-hidden="true">HR</div>
        <div class="brand-text">
          <span class="brand-game">Hollow Reign</span>
          <span class="brand-sub">Patch Notes · Nullforge Studios</span>
        </div>
      </div>
      <div class="header-meta">
        <span class="live-badge" id="live-badge">
          <span class="live-dot" aria-hidden="true"></span>
          Live build <strong id="live-version">1.4.2</strong>
        </span>
        <button class="btn btn-primary" type="button" id="btn-play">Play Now</button>
      </div>
    </header>

    <!-- ===== Toolbar: search + category chips ===== -->
    <section class="toolbar" aria-label="Filter patch notes">
      <div class="search-wrap">
        <svg class="search-icon" viewBox="0 0 24 24" width="16" height="16" aria-hidden="true" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round">
          <circle cx="11" cy="11" r="7"></circle>
          <line x1="21" y1="21" x2="16.5" y2="16.5"></line>
        </svg>
        <input type="search" id="search-input" class="search-input"
               placeholder="Search notes… e.g. crossbow, raid, fps" aria-label="Search patch notes" autocomplete="off" />
        <button type="button" class="search-clear" id="search-clear" aria-label="Clear search" hidden>×</button>
      </div>

      <div class="chip-row" role="group" aria-label="Filter by category" id="chip-row">
        <button class="chip" type="button" data-cat="all" aria-pressed="true">All</button>
        <button class="chip chip-added" type="button" data-cat="added" aria-pressed="false">Added</button>
        <button class="chip chip-changed" type="button" data-cat="changed" aria-pressed="false">Changed</button>
        <button class="chip chip-fixed" type="button" data-cat="fixed" aria-pressed="false">Fixed</button>
        <button class="chip chip-balance" type="button" data-cat="balance" aria-pressed="false">Balance</button>
      </div>

      <p class="result-count" id="result-count" role="status" aria-live="polite"></p>
    </section>

    <!-- ===== Main layout ===== -->
    <div class="layout">

      <!-- Version selector sidebar -->
      <aside class="version-rail" aria-label="Patch versions">
        <h2 class="rail-title">Versions</h2>
        <nav>
          <ul class="version-list" id="version-list"><!-- rendered by JS --></ul>
        </nav>
        <div class="rail-foot">
          <button class="btn btn-ghost btn-small" type="button" id="btn-rss">Subscribe to updates</button>
        </div>
      </aside>

      <!-- Notes pane -->
      <main class="notes-pane" id="notes-pane" aria-live="polite">
        <!-- rendered by JS: patch header, highlights, sections -->
      </main>
    </div>

    <footer class="site-footer">
      <p>Hollow Reign © Nullforge Studios — fictional title for UI demonstration.</p>
    </footer>
  </div>

  <div class="toast" id="toast" role="status" aria-live="polite"></div>

  <script src="script.js"></script>
</body>
</html>