:root {
  --bg: #f5f0eb;
  --bg-surface: rgba(255, 255, 255, 0.85);
  --bg-hover: #ebe5de;
  --text: #4a4540;
  --text-dim: #9b9490;
  --text-bright: #2c2825;
  --accent: #8b6d5c;
  --accent-dim: #b09484;
  --danger: #b85c4a;
  --possess: #c3912e;
  --possess-dim: #a09080;
  --title-vessel: #733a14;
  --title-location: #733a14;
  --border: #d8d0c8;
  --font-serif: "Cormorant Garamond", "Georgia", "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

:root[data-theme="dark"] {
  --bg: #1a1816;
  --bg-surface: rgba(30, 28, 25, 0.88);
  --bg-hover: #2a2622;
  --text: #c8c0b8;
  --text-dim: #99928b;
  --text-bright: #ede8e2;
  --accent: #c4a48a;
  --accent-dim: #8b7a6a;
  --danger: #d4806c;
  --possess: #c9a84c;
  --possess-dim: #7a7060;
  --title-vessel: #e8dcc0;
  --title-location: #e0d0c4;
  --border: #60574c;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  user-select: none;
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.7;
}

.screen {
  height: 100%;
}

/* ─── Login ─────────────────────────────────────────── */

#login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-container {
  text-align: center;
  max-width: 400px;
  padding: 2rem;
}

.login-title {
  font-family: var(--font-serif);
  font-size: 4rem;
  font-weight: 300;
  color: var(--text-bright);
  letter-spacing: 0.04em;
  margin-bottom: 0.1rem;
  letter-spacing: -0.035em;
}

.login-subtitle {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--text-dim);
  margin-bottom: 2.5rem;
  font-size: 1.1rem;
  font-weight: 300;
}

.login-btn {
  display: inline-block;
  padding: 0.7rem 2rem;
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 100px;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all 0.2s;
}

.login-btn:hover {
  background: var(--accent);
  color: var(--bg);
}

.login-error {
  color: var(--danger);
  margin-top: 1rem;
  font-family: var(--font-sans);
  font-size: 0.8rem;
}

/* ─── Game layout ───────────────────────────────────── */

#game-screen {
  position: relative;
  height: 100%;
  overflow: hidden;
}

/* ─── Top bar ───────────────────────────────────────── */

#top-bar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1.25rem;
}

.top-bar-left {
  min-width: 0;
}

.top-bar-right {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  flex-shrink: 0;
}

.player-name {
  font-family: var(--font-sans);
  color: var(--text-dim);
  font-size: 0.7rem;
}

.top-btn {
  padding: 0.25rem 0.5rem;
  background: transparent;
  color: var(--text-dim);
  border: 1px solid transparent;
  border-radius: 3px;
  font-family: var(--font-sans);
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
}

.top-btn:hover {
  color: var(--text);
  border-color: var(--border);
}

.top-btn.active {
  color: var(--accent);
  border-color: var(--accent);
}

/* ─── Top vignette (title readability) ────────────────── */

#top-vignette {
  position: absolute;
  width: 100%;
  height: 100%;
  transform: scale(2, 2.5);
  z-index: -9;
  background: radial-gradient(ellipse 50% 50% at 50% 50%, rgb(from var(--bg) r g b / 92%) 40%, transparent 80%);
  pointer-events: none;
}

/* ─── Location panel (top center) ───────────────────── */

#location-panel {
  position: absolute;
  top: 3.5rem;
  left: calc(50% + var(--panel-offset, 0px) / 2);
  transform: translateX(-50%);
  z-index: 5;
  text-align: center;
  max-width: 500px;
  width: 90%;
  padding: 1rem 0;
  pointer-events: none;
  transition: left 0.25s ease;
}

#location-title {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 300;
  color: var(--text-bright);
  letter-spacing: 0.02em;
  margin-bottom: 0.3rem;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

#node-id {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.1rem 0.4rem;
  margin-bottom: 0.5rem;
  pointer-events: auto;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

#node-id:hover {
  color: var(--accent);
  border-color: var(--accent-dim);
}

#node-id.copied {
  color: var(--accent);
  border-color: var(--accent);
}

#location-title.possessed {
  line-height: 1.2;
}

.title-node {
  display: inline-block;
  text-align: center;
  white-space: nowrap;
  pointer-events: auto;
  cursor: pointer;
  vertical-align: baseline;
}

.title-shortcode {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.6rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  opacity: 0.6;
  line-height: 1;
  margin-bottom: 0.0em;
  transition: opacity 0.15s, color 0.15s;
}

.title-node:hover .title-shortcode {
  opacity: 1;
}

.title-shortcode.copied {
  opacity: 1 !important;
  color: var(--accent);
}

.title-vessel .title-name {
  color: var(--title-vessel);
}

.title-location .title-name {
  color: var(--title-location);
}

.title-node:hover .title-name {
  text-decoration: underline;
  text-decoration-style: double;
  text-underline-offset: 0.1em;
  text-decoration-thickness: 0.025em;
  text-decoration-color: var(--text-dim);
}

/* ─── Loading state ────────────────────────────────── */

#location-panel.loading {
  pointer-events: none;
}

#location-panel.loading *:not(#top-vignette) {
  background: linear-gradient(
    90deg,
    var(--text-dim) 0%,
    var(--text) 40%,
    var(--text-dim) 60%,
    var(--text-dim) 100%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer-text 1s ease-in-out infinite;
}

@keyframes shimmer-text {
  0%   { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

#node-description {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 300;
  font-style: italic;
  color: var(--text);
  line-height: 1.6;
}

#node-description.hint {
  color: var(--text-dim);
}

#paradox-hint {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-style: italic;
  color: var(--danger);
  margin-top: 0.4rem;
}

#lock-status {
  margin-top: 0.6rem;
  padding: 0.3rem 0.8rem;
  display: inline-block;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-family: var(--font-sans);
  font-size: 0.7rem;
}

#lock-info {
  color: var(--text-dim);
}

/* ─── Side panel (left sidebar) ────────────────────── */

#side-panel {
  --sp-width: 240px;
  position: absolute;
  z-index: 10;
  top: 0;
  left: 0;
  bottom: 0;
  display: flex;
  overflow: hidden;
  background: var(--bg-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-right: 3px double var(--border);
  transition: width 0.25s ease, min-width 0.25s ease;
  pointer-events: auto;
}

#side-panel.side-panel-expanded {
  width: var(--sp-width);
  min-width: var(--sp-width);
}

#side-panel.side-panel-collapsed {
  width: 36px;
  min-width: 36px;
}

#side-panel.side-panel-dragging {
  transition: none;
}

.side-panel-collapsed #side-panel-content {
  visibility: hidden;
}

#side-panel-content {
  width: calc(var(--sp-width) - 39px);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  padding: 3rem 0 0 0;
  overflow-y: auto;
  overflow-x: hidden;
}

/* ─── Side panel resize handle ─────────────────────── */

#side-panel-resize {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 12px;
  cursor: col-resize;
  z-index: 3;
}

.side-panel-collapsed #side-panel-resize {
  display: none;
}

.sp-section {
  padding: 0.6rem 0.85rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  overflow: hidden;
}

.sp-section-grow {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  border-bottom: none;
}

.sp-section h3 {
  font-family: var(--font-sans);
  font-size: 0.6rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  margin-bottom: 0.4rem;
}

/* ─── Side panel toggle ribbon ─────────────────────── */

#side-panel-toggle {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 36px;
  background: none;
  border: none;
  border-left: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.65rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s, background 0.15s;
  padding: 0;
  z-index: 1;
}

#side-panel-toggle:hover {
  color: var(--accent);
  background: var(--bg-hover);
}

.side-panel-collapsed #side-panel-toggle {
  border-left: none;
}

/* ─── Children list ─────────────────────────────────── */

#children-list, #presence-list {
  list-style: none;
}

#children-list li {
  padding: 0.3rem 0.4rem;
  cursor: pointer;
  border-radius: 4px;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: background 0.15s;
}

#children-list li:hover {
  background: var(--bg-hover);
}

.node-name {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--accent);
  overflow-wrap: break-word;
  word-break: break-word;
  min-width: 0;
}

.lock-icon {
  font-family: var(--font-sans);
  font-size: 0.6rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ─── Presence list ─────────────────────────────────── */

#presence-list li {
  padding: 0.15rem 0;
  font-family: var(--font-sans);
  color: var(--text-dim);
  font-size: 0.75rem;
}

#presence-list li .presence-name {
  color: var(--accent-dim);
}

.presence-you {
  color: var(--accent) !important;
}

/* ─── Command input ─────────────────────────────────── */

#command-area {
  position: absolute;
  bottom: 0;
  left: var(--panel-offset, 0px);
  right: 0;
  z-index: 10;
  display: flex;
  justify-content: center;
  padding-bottom: 1.5rem;
  pointer-events: none;
  transition: left 0.25s ease;
}

#command-wrapper {
  position: relative;
  width: 90%;
  max-width: 480px;
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

#command-input {
  flex: 1;
  min-width: 0;
  padding: 0.75rem 1.2rem;
  background: var(--bg-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--text-bright);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 300;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

#command-input:focus {
  border-color: var(--accent-dim);
  box-shadow: 0 0 0 3px rgba(139, 109, 92, 0.08);
}

#command-input::placeholder {
  color: var(--text-dim);
  font-weight: 300;
}

#recenter-btn {
  flex-shrink: 0;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--text-dim);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

#recenter-btn:hover {
  color: var(--accent);
  border-color: var(--accent-dim);
}

#recenter-btn:active {
  background: var(--bg-hover);
}

#connected-toggle {
  flex-shrink: 0;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--text-dim);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

#connected-toggle:hover {
  color: var(--accent);
  border-color: var(--accent-dim);
}

#connected-toggle:active {
  background: var(--bg-hover);
}

#connected-toggle.active {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--bg-hover);
}

/* ─── Autocomplete dropdown ─────────────────────────── */

.dropdown {
  position: absolute;
  bottom: 100%;
  left: 1rem;
  right: calc(1rem + 5.8rem);
  background: var(--bg-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 6px;
  max-height: 280px;
  overflow-y: auto;
  z-index: 100;
  padding: 0.3rem;
}

.dropdown-item {
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  border-radius: 8px;
  transition: background 0.12s;
}

.dropdown-item:hover,
.dropdown-item.selected {
  background: var(--bg-hover);
}

.dropdown-cmd {
  font-family: var(--font-sans);
  color: var(--accent);
  font-weight: 500;
  font-size: 0.8rem;
}

.dropdown-desc {
  font-family: var(--font-sans);
  color: var(--text-dim);
  font-size: 0.7rem;
}

.dropdown-example {
  font-family: var(--font-sans);
  color: var(--text-dim);
  font-size: 0.65rem;
  font-style: italic;
}

/* ─── Graph view ────────────────────────────────────── */

#graph-view {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: auto;
}

#graph-svg {
  width: 100%;
  height: 100%;
}

.graph-node circle {
  stroke-width: 1px;
}

.graph-node text {
  font-family: var(--font-serif);
  font-size: 11px;
  font-weight: 400;
  fill: var(--text-dim);
  pointer-events: none;
}

#graph-svg.zoomed-out .graph-node text {
  display: none;
}

#graph-svg.zoomed-out .graph-node.graph-node-prominent text {
  display: block;
  font-size: 28px;
  font-weight: 600;
  fill: var(--text-bright);
}

#graph-svg.zoomed-out .graph-node.graph-node-root text {
  font-size: 40px;
}

#graph-svg.zoomed-out .graph-node.graph-node-prominent circle,
#graph-svg.zoomed-out .graph-node.graph-node-prominent .node-star {
  filter: drop-shadow(0 0 4px var(--accent-dim));
}

.graph-link {
  fill: none;
  stroke: var(--border);
  stroke-opacity: 0.5;
}

.graph-link-paradox {
  stroke: var(--danger);
  stroke-dasharray: 4 3;
  stroke-opacity: 0.7;
}

.graph-self-loop {
  fill: none;
  stroke: var(--danger);
  stroke-width: 1px;
  stroke-dasharray: 3 2;
}

.graph-node-paradox circle {
  animation: paradoxPulse 2s ease-in-out infinite;
}

@keyframes paradoxPulse {
  0%, 100% { stroke-opacity: 0.4; }
  50% { stroke-opacity: 1; }
}

.god-rays {
  pointer-events: none;
  filter: blur(1px);
}

.god-rays-a {
  fill-opacity: 0.82;
}

.god-rays-b {
  fill-opacity: 0.6;
}

.graph-tooltip {
  position: fixed;
  padding: 0.5rem 0.8rem;
  background: var(--bg-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--font-serif);
  font-size: 0.8rem;
  pointer-events: none;
  z-index: 60;
  max-width: 260px;
}

/* ─── Chat messages (inside side panel) ────────────── */

#chat-messages {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 0.2rem 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.chat-msg {
  padding: 0.2rem 0.75rem;
  line-height: 1.4;
  overflow-wrap: break-word;
  word-break: break-word;
}

.chat-username {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent);
  margin-right: 0.35rem;
}

.chat-text {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  color: var(--text);
}

/* ─── Messages / feedback ───────────────────────────── */

#messages {
  position: fixed;
  bottom: 5rem;
  left: calc(50% + var(--panel-offset, 0px) / 2);
  transform: translateX(-50%);
  z-index: 20;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  pointer-events: none;
  transition: left 0.25s ease;
}

.message {
  padding: 0.4rem 1rem;
  border-radius: 100px;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  background: var(--bg-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  animation: messageFade 3.5s ease-out forwards;
}

@keyframes messageFade {
  0%, 70% { opacity: 1; }
  100% { opacity: 0; }
}

.message-error {
  color: var(--danger);
  border-color: var(--danger);
}

.message-success {
  color: var(--accent);
}

/* ─── Scrollbar ─────────────────────────────────────── */

::-webkit-scrollbar {
  width: 4px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-dim);
}

/* ─── Disable centering transition during drag-resize ─ */

.panel-dragging #top-vignette,
.panel-dragging #location-panel,
.panel-dragging #command-area,
.panel-dragging #messages {
  transition: none;
}

/* ─── Responsive: auto-collapse side panel ─────────── */

@media (max-width: 640px) {
  #side-panel.side-panel-expanded {
    width: 36px;
    min-width: 36px;
  }
  #side-panel.side-panel-expanded #side-panel-content {
    display: none;
  }
  #side-panel.side-panel-expanded #side-panel-toggle {
    border-left: none;
  }
}