/* Day 17 — Isometric City Builder */

:root {
  color-scheme: dark;
  --bg: #0b1120;
  --bg-2: #111b2e;
  --panel: rgba(12, 20, 38, 0.78);
  --panel-border: rgba(255, 255, 255, 0.08);
  --panel-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
  --text: #eef2f8;
  --text-soft: rgba(230, 236, 248, 0.6);
  --accent: #7ecbe6;
  --accent-2: #b8a4f0;

  /* tile preview colors */
  --tile-grass: #a8d5a2;
  --tile-road: #c4bfb6;
  --tile-water: #7ec8e3;
  --tile-park: #c5e8a0;
  --tile-tree: #6dbf67;
  --tile-bld-s: #f0e4d7;
  --tile-bld-t: #e0d4f5;
  --tile-bld-sk: #d4e7fa;
}

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

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

body {
  background:
    radial-gradient(circle at 20% 15%, rgba(126, 203, 230, 0.12), transparent 28%),
    radial-gradient(circle at 80% 20%, rgba(184, 164, 240, 0.1), transparent 24%),
    radial-gradient(circle at 50% 85%, rgba(126, 203, 230, 0.08), transparent 30%),
    linear-gradient(160deg, var(--bg) 0%, var(--bg-2) 100%);
  color: var(--text);
  font-family: "Urbanist", "Segoe UI", sans-serif;
  overflow: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 4.5rem 4.5rem;
  mask-image: radial-gradient(circle at center, rgba(0, 0, 0, 0.6), transparent 88%);
  opacity: 0.4;
}

/* ── Shell ───────────────────────────────────────────── */

.app-shell {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100%;
}

/* ── Hero ────────────────────────────────────────────── */

.hero-panel {
  text-align: center;
  padding: 1.4rem 1.5rem 0.8rem;
  flex-shrink: 0;
}

.hero-panel__eyebrow {
  font-family: "Azeret Mono", monospace;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.5rem;
}

.hero-panel h1 {
  font-weight: 700;
  font-size: clamp(1.4rem, 3vw, 2rem);
  letter-spacing: -0.02em;
  margin: 0;
}

.hero-panel__lede {
  color: var(--text-soft);
  font-size: 0.88rem;
  margin: 0.4rem 0 0;
  line-height: 1.5;
}

/* ── Canvas ──────────────────────────────────────────── */

.canvas-wrap {
  flex: 1;
  position: relative;
  min-height: 0;
}

#city-canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: crosshair;
}

/* ── Toolbar ─────────────────────────────────────────── */

.toolbar {
  position: fixed;
  bottom: 1.2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 1rem;
  background: var(--panel);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border: 1px solid var(--panel-border);
  border-radius: 1rem;
  box-shadow: var(--panel-shadow);
  z-index: 50;
}

.toolbar__tiles {
  display: flex;
  gap: 0.25rem;
}

.toolbar__divider {
  width: 1px;
  height: 2.2rem;
  background: var(--panel-border);
  margin: 0 0.3rem;
}

.toolbar__actions {
  display: flex;
  gap: 0.35rem;
}

/* ── Tool buttons ────────────────────────────────────── */

.tool-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  padding: 0.45rem 0.5rem 0.35rem;
  background: transparent;
  border: 2px solid transparent;
  border-radius: 0.6rem;
  cursor: pointer;
  transition: background 0.18s, border-color 0.22s, transform 0.15s;
  color: var(--text);
}

.tool-btn:hover {
  background: rgba(255, 255, 255, 0.06);
  transform: translateY(-1px);
}

.tool-btn.active {
  border-color: var(--accent);
  background: rgba(126, 203, 230, 0.1);
  box-shadow: 0 0 12px rgba(126, 203, 230, 0.2);
}

.tool-preview {
  position: relative;
  width: 26px;
  height: 26px;
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
}

/* elevated previews for buildings — show a tiny box */
.tool-preview--building-small,
.tool-preview--building-tall,
.tool-preview--building-skyscraper {
  clip-path: none;
  width: 26px;
  height: 26px;
  background: none;
}

.tool-preview--building-small::before,
.tool-preview--building-tall::before,
.tool-preview--building-skyscraper::before {
  content: "";
  position: absolute;
  inset: 0;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}

.tool-preview--building-small::before { background: var(--tile-bld-s); }
.tool-preview--building-tall::before { background: var(--tile-bld-t); }
.tool-preview--building-skyscraper::before { background: var(--tile-bld-sk); }

.tool-preview--grass { background: var(--tile-grass); }
.tool-preview--road { background: var(--tile-road); }
.tool-preview--water {
  background: var(--tile-water);
  animation: waterShimmer 2s ease-in-out infinite;
}
.tool-preview--park { background: var(--tile-park); }
.tool-preview--tree { background: var(--tile-tree); }

@keyframes waterShimmer {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.tool-btn .tool-kbd {
  font-family: "Azeret Mono", monospace;
  font-size: 0.48rem;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.25);
  letter-spacing: 0;
}

.tool-label {
  font-family: "Azeret Mono", monospace;
  font-size: 0.56rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-soft);
  text-transform: uppercase;
}

/* ── Action buttons ──────────────────────────────────── */

.action-btn {
  padding: 0.5rem 0.9rem;
  font-family: "Azeret Mono", monospace;
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--panel-border);
  border-radius: 0.5rem;
  cursor: pointer;
  transition: background 0.18s, border-color 0.18s;
  white-space: nowrap;
}

.action-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.18);
}

.action-btn--icon {
  padding: 0.5rem 0.65rem;
  font-size: 1rem;
  line-height: 1;
}

.daynight-icon::before {
  content: "\2600";
}

.daynight-icon.night::before {
  content: "\263E";
}

/* ── Responsive ──────────────────────────────────────── */

@media (max-width: 800px) {
  .toolbar {
    flex-wrap: wrap;
    justify-content: center;
    max-width: calc(100vw - 2rem);
    bottom: 0.6rem;
    padding: 0.5rem 0.7rem;
    gap: 0.4rem;
  }

  .toolbar__divider {
    display: none;
  }

  .toolbar__tiles {
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.15rem;
  }

  .tool-btn {
    padding: 0.35rem 0.4rem 0.25rem;
  }

  .tool-preview {
    width: 22px;
    height: 22px;
  }

  .tool-label {
    font-size: 0.48rem;
  }

  .hero-panel {
    padding: 0.8rem 1rem 0.4rem;
  }

  .hero-panel__lede {
    display: none;
  }
}

@media (max-width: 480px) {
  .action-btn {
    font-size: 0.55rem;
    padding: 0.4rem 0.6rem;
  }
}

/* ── Noscript ────────────────────────────────────────── */

.no-script {
  display: block;
  text-align: center;
  padding: 3rem;
  color: var(--text-soft);
  font-size: 0.9rem;
}