/**
 * WebGPU Atmospheric Scattering Demo - Styles
 *
 * This stylesheet provides the visual styling for the WebGPU atmosphere demo,
 * including dark theme, fullscreen canvas layout, help overlay, and GitHub banner.
 */

/* ============================================================================
 * Root and Base Styles
 * ============================================================================ */

:root {
  color-scheme: dark;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

html,
body {
  margin: 0;
  height: 100%;
  background: #050505;
}

body {
  display: flex;
  align-items: stretch;
  justify-content: stretch;
}

/* ============================================================================
 * Canvas - Fullscreen rendering surface
 * ============================================================================ */

#webgpu-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* ============================================================================
 * FPS Overlay - Persistent FPS counter (bottom-right)
 * Always visible to make FPS comparisons easy when tweaking terrain sliders.
 * ============================================================================ */

:root {
  --fps-overlay-bg: rgba(0, 0, 0, 0.55);
  --fps-overlay-color: #6f6;
  --fps-overlay-padding: 6px 10px;
  --fps-overlay-radius: 6px;
  --fps-overlay-font-size: 14px;
}

#fps-overlay {
  position: fixed;
  right: 12px;
  bottom: 12px;
  z-index: 9999;
  background: var(--fps-overlay-bg);
  color: var(--fps-overlay-color);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: var(--fps-overlay-font-size);
  font-weight: 600;
  padding: var(--fps-overlay-padding);
  border-radius: var(--fps-overlay-radius);
  pointer-events: none;
  user-select: none;
}

/* ============================================================================
 * Help Overlay - Interactive controls guide
 * ============================================================================ */

#help {
  position: absolute;
  top: 0;
  left: 0;
  color: white;
  font-family: monospace;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
}

#help.hidden {
  display: none;
}

ul {
  padding-left: 1em;
}

li {
  list-style: none;
}

/* ============================================================================
 * Status Message - WebGPU availability notice
 * ============================================================================ */

.status {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-size: 1.1rem;
  text-align: center;
  background: rgba(0, 0, 0, 0.75);
  padding: 1rem 1.5rem;
  border-radius: 0.5rem;
  max-width: 90%;
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.35);
}

.status.hidden {
  display: none;
}

/* ============================================================================
 * Repository Banner - GitHub link at bottom
 * ============================================================================ */

#repo-banner {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0.5rem 1rem;
  display: flex;
  justify-content: center;
  pointer-events: none;
}

#repo-banner a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: #fff;
  background: rgba(0, 0, 0, 0.55);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  text-decoration: none;
  pointer-events: auto;
  transition: background 150ms ease;
}

#repo-banner a:hover {
  background: rgba(0, 0, 0, 0.75);
}

#repo-banner svg {
  width: 1rem;
  height: 1rem;
  fill: currentColor;
}

/* ============================================================================
 * Parcel Coordinate Overlay - Top right corner
 * ============================================================================ */

#parcel-coord-overlay {
  position: absolute;
  top: 28px;
  right: 70px;
  color: #fff;
  font-family: monospace;
  font-size: 0.8rem;
  background: rgba(0, 0, 0, 0.55);
  padding: 6px 12px;
  border-radius: 6px;
  pointer-events: none;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
  z-index: 10;
  transition: background 0.3s;
}

#parcel-coord-overlay.owned {
  background: rgba(167, 139, 250, 0.45);
}

/* Weather force-test badges — shown only while a manual override is active.
 * R = rain (blue palette), Ñ = snow (cool white palette). Same chip layout. */
#weather-force-badge,
#weather-force-badge-snow {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: #cfe8ff;
  font-family: monospace;
  font-size: 0.8rem;
  background: rgba(20, 60, 110, 0.78);
  border: 1px solid rgba(120, 180, 255, 0.5);
  padding: 6px 14px;
  border-radius: 6px;
  pointer-events: none;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
  z-index: 10;
  display: none;
}

#weather-force-badge-snow {
  color: #f4faff;
  background: rgba(180, 200, 230, 0.78);
  border-color: rgba(255, 255, 255, 0.7);
  text-shadow: 1px 1px 2px rgba(60, 80, 110, 0.8);
}

#weather-force-badge.visible,
#weather-force-badge-snow.visible {
  display: block;
}

/* ============================================================================
 * Calendar - Stardew-style date HUD widget + calendar panel
 * ============================================================================ */

:root {
  --cal-bg: rgba(18, 20, 30, 0.82);
  --cal-border: rgba(120, 130, 170, 0.35);
  --cal-text: #e8e8f0;
  --cal-muted: #9aa0b8;
  --cal-accent: #f5c451;
  --cal-radius: 10px;
  --season-spring: #6fcf6f;
  --season-summer: #f5c451;
  --season-autumn: #e08a4b;
  --season-winter: #7fb8e6;
}

#calendar-hud {
  position: absolute;
  top: 60px;
  right: 70px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 112px;
  padding: 7px 12px;
  background: var(--cal-bg);
  border: 1px solid var(--cal-border);
  border-radius: var(--cal-radius);
  color: var(--cal-text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  z-index: 11;
  cursor: pointer;
  pointer-events: auto;
  backdrop-filter: blur(6px);
  box-shadow: 0 3px 14px rgba(0, 0, 0, 0.45);
  transition: border-color 0.2s, transform 0.1s;
  user-select: none;
}

#calendar-hud:hover {
  border-color: var(--cal-accent);
}

#calendar-hud:active {
  transform: scale(0.97);
}

.cal-hud-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.cal-hud-row--sub {
  align-items: center;
}

.cal-hud-season {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.cal-hud-day {
  font-size: 11px;
  color: var(--cal-muted);
}

.cal-hud-clock {
  font-family: monospace;
  font-size: 13px;
}

.cal-hud-moon {
  font-size: 13px;
}

.cal-season--spring { color: var(--season-spring); }
.cal-season--summer { color: var(--season-summer); }
.cal-season--autumn { color: var(--season-autumn); }
.cal-season--winter { color: var(--season-winter); }

#calendar-panel {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 440px;
  padding: 18px;
  background: var(--cal-bg);
  border: 1px solid var(--cal-border);
  border-radius: 14px;
  color: var(--cal-text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  z-index: 120;
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
  pointer-events: auto;
  display: none;
}

.cal-panel-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}

.cal-panel-title {
  font-size: 18px;
  font-weight: 700;
}

.cal-panel-year {
  font-size: 12px;
  color: var(--cal-muted);
}

.cal-panel-close {
  margin-left: auto;
  width: 24px;
  height: 24px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--cal-border);
  border-radius: 6px;
  color: var(--cal-muted);
  font-size: 12px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.cal-panel-close:hover {
  background: rgba(255, 90, 90, 0.25);
  color: #fff;
}

.cal-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 14px;
}

.cal-tab {
  flex: 1;
  padding: 6px 0;
  font-family: inherit;
  font-size: 11px;
  font-weight: 600;
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid transparent;
  cursor: pointer;
  opacity: 0.5;
  transition: opacity 0.15s, background 0.15s;
}

.cal-tab.active {
  opacity: 1;
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--cal-border);
}

.cal-tab.current {
  opacity: 1;
}

.cal-tab.current::after {
  content: '•';
  margin-left: 5px;
}

.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}

.cal-day {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 7px 0;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid transparent;
}

.cal-day-num {
  font-size: 10px;
  font-weight: 600;
  color: var(--cal-muted);
}

.cal-day-weather {
  font-size: 19px;
  line-height: 1.1;
}

.cal-day.current {
  background: rgba(245, 196, 81, 0.18);
  border-color: var(--cal-accent);
}

.cal-day.current .cal-day-num {
  color: var(--cal-accent);
}

.cal-panel-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--cal-border);
  font-size: 12px;
}

.cal-foot-clock {
  font-family: monospace;
  font-size: 14px;
}

.cal-foot-moon {
  color: var(--cal-muted);
}

/* Time-warp slider — accelerates the world clock from inside the calendar. */
.cal-timewarp {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--cal-border);
  font-size: 12px;
}

.cal-timewarp .slider-container {
  flex: 1;
}

.cal-timewarp-label {
  color: var(--cal-muted);
  white-space: nowrap;
}

.cal-timewarp-val {
  font-family: monospace;
  font-size: 13px;
  color: var(--cal-accent);
  min-width: 36px;
  text-align: right;
}

/* ===== Global loading spinner (window.appSpinner) =====
   Small, non-blocking pill badge shown during async loads (blockchain,
   marketplace, lazy modules). Reuses the app's dark glass look. */
:root {
  --app-spinner-top: 16px;
  --app-spinner-z: 100000;
  --app-spinner-bg: rgba(18, 20, 30, 0.82);
  --app-spinner-border: rgba(120, 130, 170, 0.35);
  --app-spinner-text: #e8eaed;
  --app-spinner-size: 18px;
  --app-spinner-track: rgba(255, 255, 255, 0.22);
  --app-spinner-accent: #4ea1ff;
}

.app-spinner {
  position: fixed;
  top: var(--app-spinner-top);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 16px;
  background: var(--app-spinner-bg);
  border: 1px solid var(--app-spinner-border);
  border-radius: 999px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
  color: var(--app-spinner-text);
  font: 500 13px/1 system-ui, -apple-system, sans-serif;
  z-index: var(--app-spinner-z);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.app-spinner.is-visible {
  display: inline-flex;
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.app-spinner__ring {
  width: var(--app-spinner-size);
  height: var(--app-spinner-size);
  border: 2px solid var(--app-spinner-track);
  border-top-color: var(--app-spinner-accent);
  border-radius: 50%;
  animation: app-spinner-spin 0.7s linear infinite;
  flex: 0 0 auto;
}

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

/* ===== Boot requirements gate (WebGPU / HTML-in-Canvas) =====
   Full-screen blocking modal shown when a hard requirement is missing, so the
   world never boots without it. See lib/core/requirements.js. */
.req-gate {
  --req-bg: rgba(8, 12, 20, 0.92);
  --req-card: rgba(20, 26, 38, 0.96);
  --req-border: rgba(120, 160, 220, 0.18);
  --req-accent: #34d3ff;
  --req-text: #e8eef6;
  --req-muted: #9fb0c4;
  position: fixed;
  inset: 0;
  z-index: 100000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--req-bg);
  backdrop-filter: blur(8px);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--req-text);
}

.req-card {
  max-width: 460px;
  width: 100%;
  padding: 32px 30px;
  border-radius: 16px;
  background: var(--req-card);
  border: 1px solid var(--req-border);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  text-align: center;
}

.req-logo {
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--req-accent);
  font-size: 13px;
  margin-bottom: 16px;
}

.req-title { font-size: 21px; margin: 0 0 10px; }

.req-text {
  font-size: 14px;
  line-height: 1.5;
  color: var(--req-muted);
  margin: 0 0 18px;
}

.req-flag {
  display: flex;
  gap: 8px;
  align-items: center;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--req-border);
  border-radius: 10px;
  padding: 8px 10px;
  margin: 0 0 18px;
}

.req-flag code {
  flex: 1;
  font-size: 12px;
  color: var(--req-accent);
  overflow-wrap: anywhere;
  text-align: left;
}

.req-copy,
.req-reload {
  font: inherit;
  cursor: pointer;
  border-radius: 8px;
  border: 1px solid var(--req-border);
  background: rgba(52, 211, 255, 0.12);
  color: var(--req-text);
}

.req-copy { font-size: 12px; padding: 6px 12px; }

.req-reload {
  margin-top: 6px;
  background: var(--req-accent);
  color: #06121c;
  font-weight: 600;
  padding: 10px 22px;
}

.req-steps {
  text-align: left;
  margin: 0 0 18px;
  padding-left: 20px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--req-muted);
}

.req-steps strong { color: var(--req-text); }

.req-detail {
  font-size: 11px;
  color: var(--req-muted);
  opacity: 0.7;
  margin: 10px 0 0;
}