:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --bg: #0d1511;
  --panel: rgba(18, 30, 24, .94);
  --panel-2: rgba(25, 40, 32, .96);
  --line: rgba(255,255,255,.09);
  --text: #eff8f1;
  --muted: #9fb0a5;
  --accent: #8ed39f;
  --accent-strong: #b8efc4;
  --danger: #e48e87;
  --shadow: 0 16px 40px rgba(0,0,0,.28);
}

* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; margin: 0; overflow: hidden; background: var(--bg); color: var(--text); }
button, input { font: inherit; }
button { color: inherit; }

.app-shell { height: 100vh; display: grid; grid-template-rows: 68px 1fr 34px; background: #0f1713; }
.topbar { z-index: 20; display: flex; align-items: center; gap: 24px; padding: 10px 16px; border-bottom: 1px solid var(--line); background: rgba(13, 21, 17, .96); backdrop-filter: blur(16px); }
.brand-block { display: flex; align-items: center; gap: 10px; min-width: 220px; }
.brand-mark { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 10px; background: linear-gradient(145deg,#95dda7,#5cae72); color: #0c1b10; font-weight: 900; box-shadow: inset 0 0 0 1px rgba(255,255,255,.25); }
.brand-title { font-weight: 900; letter-spacing: .14em; font-size: 15px; }
.brand-subtitle { margin-top: 2px; color: var(--muted); font-size: 11px; }
.city-summary { display: flex; gap: 8px; flex: 1; justify-content: center; }
.summary-chip { min-width: 116px; padding: 7px 11px; border: 1px solid var(--line); border-radius: 10px; background: rgba(255,255,255,.035); }
.summary-chip span { display: block; color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: .08em; }
.summary-chip strong { display: block; margin-top: 2px; font-size: 13px; }
.top-actions { min-width: 220px; display: flex; justify-content: flex-end; align-items: center; gap: 10px; }
.save-status { color: var(--muted); font-size: 12px; }
.save-status.saving { color: #e8cd89; }
.soft-button { cursor: pointer; border: 1px solid var(--line); background: rgba(255,255,255,.05); border-radius: 9px; padding: 8px 11px; }
.soft-button:hover { background: rgba(255,255,255,.09); }

.game-layout { min-height: 0; display: grid; grid-template-columns: 112px minmax(0,1fr) 290px; }
.toolbar { z-index: 10; padding: 12px 10px; display: flex; flex-direction: column; gap: 8px; border-right: 1px solid var(--line); background: var(--panel); }
.tool-button { cursor: pointer; width: 100%; min-height: 66px; display: grid; grid-template-columns: 1fr; place-items: center; gap: 2px; border: 1px solid transparent; border-radius: 12px; background: rgba(255,255,255,.03); transition: .16s ease; }
.tool-button:hover { background: rgba(255,255,255,.07); }
.tool-button.active { border-color: rgba(142,211,159,.45); background: rgba(89, 159, 105, .2); box-shadow: inset 0 0 0 1px rgba(142,211,159,.08); }
.tool-button.compact { min-height: 58px; }
.tool-icon { font-size: 23px; line-height: 1; }
.tool-button > span:nth-child(2) { font-size: 11px; font-weight: 700; }
kbd { padding: 1px 5px; border-radius: 5px; color: var(--muted); background: rgba(0,0,0,.22); font-size: 9px; }
.toolbar-divider { height: 1px; background: var(--line); margin: 3px 0; }

.viewport-wrap { position: relative; min-width: 0; min-height: 0; overflow: hidden; background: #17241c; }
#gameCanvas { width: 100%; height: 100%; display: block; touch-action: none; cursor: crosshair; }
.phase-card, .tile-info, .cost-preview { pointer-events: none; position: absolute; z-index: 4; border: 1px solid rgba(255,255,255,.1); background: rgba(10,17,13,.74); backdrop-filter: blur(10px); box-shadow: var(--shadow); }
.phase-card { left: 14px; top: 14px; border-radius: 11px; padding: 9px 11px; }
.phase-card strong { display:block; font-size: 12px; }
.phase-card span { color: var(--muted); font-size: 10px; }
.tile-info { right: 14px; top: 14px; border-radius: 8px; padding: 6px 9px; color: var(--muted); font-size: 11px; }
.cost-preview { left: 50%; bottom: 16px; transform: translateX(-50%); border-radius: 9px; padding: 7px 10px; font-size: 12px; font-weight: 800; }
.cost-preview.danger { color: #ffb3ac; }
.hidden { display: none !important; }

.info-panel { z-index: 10; overflow: auto; padding: 16px; border-left: 1px solid var(--line); background: var(--panel); }
.panel-section { padding: 14px 0; border-bottom: 1px solid var(--line); }
.panel-section:first-child { padding-top: 4px; }
.eyebrow { margin-bottom: 5px; color: var(--accent); font-size: 10px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.info-panel h1 { margin: 0; font-size: 23px; letter-spacing: -.02em; }
.info-panel p { margin: 7px 0 0; color: var(--muted); font-size: 12px; line-height: 1.5; }
.tool-detail { display: grid; gap: 3px; }
.tool-detail strong { font-size: 14px; }
.tool-detail span { color: var(--muted); font-size: 11px; }
.compact-stats { display: grid; gap: 8px; }
.compact-stats div { display: flex; justify-content: space-between; gap: 10px; font-size: 12px; }
.compact-stats span { color: var(--muted); }
.help-box b { color: var(--text); font-weight: 700; }

.statusbar { z-index: 20; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 0 12px; border-top: 1px solid var(--line); background: #0c1410; color: var(--muted); font-size: 11px; }
.build-label { opacity: .7; }

@media (max-width: 980px) {
  .game-layout { grid-template-columns: 94px minmax(0,1fr); }
  .info-panel { display: none; }
  .city-summary { display: none; }
  .top-actions { min-width: auto; margin-left: auto; }
}

/* Fase 2 — zoning, RCI e simulazione */
.toolbar { overflow-y: auto; }
.tool-button { min-height: 58px; }
.tool-button.zone-res .tool-icon { color: #8de3a1; }
.tool-button.zone-com .tool-icon { color: #8dc8f4; }
.tool-button.zone-ind .tool-icon { color: #f0cf7d; }
.tool-button.zone-res.active { border-color: rgba(91,201,117,.65); background: rgba(65,151,84,.23); }
.tool-button.zone-com.active { border-color: rgba(69,148,221,.65); background: rgba(57,119,176,.23); }
.tool-button.zone-ind.active { border-color: rgba(220,174,63,.65); background: rgba(171,128,35,.23); }
.speed-control { display: flex; border: 1px solid var(--line); border-radius: 9px; overflow: hidden; background: rgba(255,255,255,.035); }
.speed-button { cursor: pointer; min-width: 31px; height: 31px; padding: 0 7px; border: 0; border-right: 1px solid var(--line); background: transparent; color: var(--muted); font-size: 11px; font-weight: 800; }
.speed-button:last-child { border-right: 0; }
.speed-button:hover { background: rgba(255,255,255,.07); color: var(--text); }
.speed-button.active { background: rgba(89,159,105,.24); color: var(--accent-strong); }
.demand-row { display: grid; grid-template-columns: 76px 1fr 25px; align-items: center; gap: 7px; margin-top: 9px; font-size: 10px; }
.demand-row > span { color: var(--muted); }
.demand-row > strong { text-align: right; font-size: 10px; }
.demand-track { position: relative; height: 7px; overflow: hidden; border-radius: 999px; background: rgba(255,255,255,.07); }
.demand-track i { position: absolute; inset: 0 auto 0 0; width: 0; border-radius: inherit; transition: width .28s ease; }
.demand-track i[data-type="res"] { background: #64c97b; }
.demand-track i[data-type="com"] { background: #579dd9; }
.demand-track i[data-type="ind"] { background: #d6ac4e; }
@media (max-height: 760px) {
  .toolbar { padding-top: 7px; gap: 5px; }
  .tool-button { min-height: 49px; }
  .tool-button.compact { min-height: 46px; }
  .tool-icon { font-size: 19px; }
}

/* Fase 3 — infrastrutture, servizi e mappe di copertura */
.game-layout { grid-template-columns: 122px minmax(0,1fr) 306px; }
.toolbar { padding: 8px 8px 12px; gap: 5px; scrollbar-width: thin; }
.toolbar-group-label { padding: 7px 5px 2px; color: #789081; font-size: 8px; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; text-align: center; }
.tool-button { min-height: 50px; border-radius: 10px; }
.tool-button.compact { min-height: 47px; }
.tool-icon { font-size: 20px; font-weight: 900; }
.tool-button > span:nth-child(2) { font-size: 10px; }
.tool-button.facility-power .tool-icon { color: #f0cf75; }
.tool-button.facility-water .tool-icon { color: #8ed2ee; }
.tool-button.facility-health .tool-icon { color: #8ed9ae; }
.tool-button.facility-fire .tool-icon { color: #ef9a91; }
.tool-button.facility-police .tool-icon { color: #a8c8e7; }
.tool-button.facility-education .tool-icon { color: #e4c994; }
.tool-button.facility-power.active { border-color: rgba(240,207,117,.55); background: rgba(170,135,48,.19); }
.tool-button.facility-water.active { border-color: rgba(142,210,238,.55); background: rgba(56,130,163,.19); }
.tool-button.facility-health.active { border-color: rgba(142,217,174,.55); background: rgba(55,136,89,.19); }
.tool-button.facility-fire.active { border-color: rgba(239,154,145,.55); background: rgba(145,67,60,.19); }
.tool-button.facility-police.active { border-color: rgba(168,200,231,.55); background: rgba(63,100,138,.19); }
.tool-button.facility-education.active { border-color: rgba(228,201,148,.55); background: rgba(142,112,51,.19); }
.city-summary { gap: 6px; }
.summary-chip { min-width: 100px; padding: 6px 9px; }
.summary-chip.utility-chip { min-width: 92px; }
.city-intro p.warning { color: #e3c17f; }
.city-intro p.good { color: #9ed9ad; }
.utility-row { margin-top: 10px; }
.utility-row:first-of-type { margin-top: 7px; }
.utility-row > div:first-child { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; margin-bottom: 5px; font-size: 11px; }
.utility-row span { color: var(--muted); }
.utility-row strong { font-size: 11px; }
.utility-track { position: relative; overflow: hidden; height: 7px; border-radius: 999px; background: rgba(255,255,255,.07); }
.utility-track i { display: block; height: 100%; min-width: 0; border-radius: inherit; transition: width .25s ease; }
#powerUsageBar { background: #d8b74d; }
#waterUsageBar { background: #58a9da; }
.utility-track i.danger { background: #d57267 !important; }
.service-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; margin-top: 8px; }
.service-grid div { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 7px 8px; border: 1px solid var(--line); border-radius: 8px; background: rgba(255,255,255,.025); font-size: 10px; }
.service-grid span { color: var(--muted); }
.service-grid strong { font-size: 10px; }
.overlay-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 5px; margin-top: 7px; }
.overlay-button { cursor: pointer; border: 1px solid var(--line); border-radius: 7px; padding: 6px 5px; background: rgba(255,255,255,.025); color: var(--muted); font-size: 9px; font-weight: 800; }
.overlay-button:hover { background: rgba(255,255,255,.06); color: var(--text); }
.overlay-button.active { border-color: rgba(190,231,200,.36); background: rgba(91,143,104,.22); color: var(--text); }
.overlay-button.power.active { border-color: rgba(240,207,117,.5); background: rgba(181,144,53,.22); }
.overlay-button.water.active { border-color: rgba(142,210,238,.5); background: rgba(55,130,163,.22); }
.overlay-button.health.active { border-color: rgba(142,217,174,.5); background: rgba(54,132,88,.22); }
.overlay-button.fire.active { border-color: rgba(239,154,145,.5); background: rgba(145,67,60,.22); }
.overlay-button.police.active { border-color: rgba(168,200,231,.5); background: rgba(63,100,138,.22); }
.overlay-button.education.active { border-color: rgba(228,201,148,.5); background: rgba(142,112,51,.22); }
.info-panel { padding: 13px 15px; }
.panel-section { padding: 11px 0; }
.info-panel h1 { font-size: 21px; }
.info-panel p { font-size: 11px; }
.phase-card strong { color: #b8efc4; }

@media (max-width: 1240px) {
  .summary-chip.utility-chip { display: none; }
  .game-layout { grid-template-columns: 116px minmax(0,1fr) 290px; }
}
@media (max-width: 980px) {
  .game-layout { grid-template-columns: 100px minmax(0,1fr); }
  .info-panel { display: none; }
  .city-summary { display: none; }
  .top-actions { min-width: auto; margin-left: auto; }
}
@media (max-height: 820px) {
  .tool-button { min-height: 44px; }
  .tool-button.compact { min-height: 42px; }
  .toolbar-group-label { padding-top: 4px; }
}