/* ================================================================
   Freds Blitz-Bude – Stylesheet
   Optimiert für Kinder: bunt, groß, einfach
   Mobile-first, Touch-freundlich
   ================================================================ */

/* ── Reset & Box-Sizing ─────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden; /* Kein Scrollen – Vollbild-Spiel */
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 18px;
  background: #4CAF50;
  color: #333;
  touch-action: manipulation; /* Doppeltipp-Zoom deaktivieren */
  -webkit-tap-highlight-color: transparent;
  user-select: none; /* Kein Text markieren während Spiel */
}

/* ── Canvas: Vollbild-Hintergrund ───────────────────────────── */
#game-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
}

/* ── UI-Layer: über dem Canvas ──────────────────────────────── */
#ui {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none; /* Klicks durch wenn kein interaktives Element */
}

/* ── Screens: Ein/Ausblenden ────────────────────────────────── */
.screen {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: none;
  pointer-events: none;
}

.screen.active {
  display: block;
  pointer-events: all;
}

/* ── Hilfsklassen ───────────────────────────────────────────── */
.hidden {
  display: none !important;
}

/* ================================================================
   SCREEN 1: STARTBILDSCHIRM
   ================================================================ */
#screen-start {
  background: linear-gradient(160deg, #56ab2f 0%, #a8e063 100%);
  align-items: center;
  justify-content: center;
}

#screen-start.active {
  display: flex;
}

/* Einstellungen-Button oben rechts */
#btn-settings {
  position: fixed;
  top: 1rem;
  right: 1rem;
  font-size: 2rem;
  background: rgba(255,255,255,0.25);
  border: none;
  border-radius: 50%;
  width: 56px;
  z-index: 500;
  height: 56px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  touch-action: manipulation;
  transition: background 0.15s, transform 0.15s;
  pointer-events: all;
}
#btn-settings:active { transform: scale(0.9); background: rgba(255,255,255,0.4); }

/* ================================================================
   SCREEN 5: EINSTELLUNGEN
   ================================================================ */
#screen-settings {
  background: linear-gradient(160deg, #56ab2f 0%, #a8e063 100%);
  align-items: center;
  justify-content: flex-start;
  overflow-y: auto;
  padding: 1.5rem 1rem;
}

#screen-settings.active {
  display: flex;
}

.settings-box {
  background: #fffde7;
  border-radius: 24px;
  padding: 1.5rem 1.2rem;
  max-width: 520px;
  width: 100%;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  border: 4px solid #f9a825;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin: auto; /* zentrieren wenn Scroll nicht nötig */
}

.settings-title {
  font-size: clamp(1.4rem, 5vw, 1.8rem);
  font-weight: 900;
  color: #e65100;
  text-align: center;
  margin: 0;
}

.settings-divider {
  border: none;
  border-top: 2px dashed #ffe082;
  margin: 0.2rem 0;
}

/* Toggle-Zeile */
.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
  padding: 0.4rem 0;
}

.settings-row-text {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.settings-row-label {
  font-size: 1.05rem;
  font-weight: 700;
  color: #333;
}

.settings-row-desc {
  font-size: 0.82rem;
  color: #888;
}

/* Toggle-Switch */
.toggle-wrap {
  position: relative;
  flex-shrink: 0;
}

.toggle-input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.toggle-slider {
  display: block;
  width: 56px;
  height: 30px;
  background: #ccc;
  border-radius: 30px;
  transition: background 0.2s;
  position: relative;
  cursor: pointer;
}

.toggle-slider::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 24px;
  height: 24px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.2s;
  box-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.toggle-input:checked + .toggle-slider {
  background: #4CAF50;
}

.toggle-input:checked + .toggle-slider::after {
  transform: translateX(26px);
}

.settings-action-btn {
  width: 100%;
  justify-content: center;
}

.settings-warning {
  font-size: 0.82rem;
  color: #c62828;
  text-align: center;
  margin: -0.4rem 0 0;
}

/* Kurze Bestätigungs-Meldung */
.settings-toast {
  background: #1b5e20;
  color: #fff;
  border-radius: 12px;
  padding: 0.7rem 1rem;
  font-size: 0.95rem;
  font-weight: 700;
  text-align: center;
  animation: fadeInOut 2.5s ease forwards;
}

@keyframes fadeInOut {
  0%   { opacity: 0; transform: translateY(6px); }
  15%  { opacity: 1; transform: translateY(0); }
  75%  { opacity: 1; }
  100% { opacity: 0; }
}

/* Haltbarkeit Sub-Row in Settings */
.settings-sub-row {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.5rem 0.8rem;
  flex-wrap: wrap;
}
.settings-sub-row .settings-row-label {
  font-weight: 600;
  white-space: nowrap;
}
.verderb-tage-buttons {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}
.verderb-tage-btn {
  min-width: 70px;
}

/* Tagesrhythmus- und Kundentypen-Controls in Settings */
.settings-faktor-row {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.settings-faktor-row:last-child {
  border-bottom: none;
}
.settings-faktor-label {
  font-weight: 700;
  font-size: 1rem;
}
.settings-faktor-label small {
  font-weight: 400;
  font-size: 0.78rem;
  color: #777;
}
.settings-faktor-desc {
  font-size: 0.78rem;
  color: #666;
  margin-top: -0.15rem;
}
.faktor-buttons {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
  margin-top: 0.2rem;
}
.faktor-btn {
  min-width: 52px;
  font-size: 0.85rem;
}

/* Frische-Anzeige im Inventar-Panel */
.inventory-item-freshness {
  font-size: 0.8rem;
  font-weight: 700;
  margin-top: -0.2rem;
}

/* ================================================================
   SCREEN 6: GROSSMARKT
   ================================================================ */
#screen-grossmarkt {
  background: linear-gradient(160deg, #e65100 0%, #ff8f00 60%, #ffd54f 100%);
  flex-direction: column;
  overflow: hidden;
}
#screen-grossmarkt.active { display: flex; }

#grossmarkt-container {
  display: flex;
  flex-direction: column;
  height: 100%;
  max-width: 640px;
  margin: 0 auto;
  width: 100%;
}

/* Kopfzeile */
#grossmarkt-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0,0,0,0.35);
  padding: 0.7rem 1rem;
  gap: 0.6rem;
  flex-shrink: 0;
}
.grossmarkt-titel {
  color: #fff;
  font-size: clamp(1.1rem, 4vw, 1.5rem);
  font-weight: 900;
  margin: 0;
  text-shadow: 0 2px 4px rgba(0,0,0,0.4);
}
#grossmarkt-budget {
  color: #fff3e0;
  font-size: 0.9rem;
  font-weight: 700;
  text-align: right;
}
#grossmarkt-money {
  font-size: 1.15rem;
  font-weight: 900;
  color: #fff;
  display: block;
}

/* Scrollbares Produkt-Grid */
#grossmarkt-sortiment {
  flex: 1;
  overflow-y: auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.75rem;
  padding: 0.85rem;
  -webkit-overflow-scrolling: touch;
}

/* Produkt-Kachel */
.grossmarkt-kachel {
  background: #fffde7;
  border-radius: 20px;
  border: 3px solid #f9a825;
  padding: 0.75rem 0.5rem 0.6rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}
.grossmarkt-emoji  { font-size: 2.6rem; line-height: 1; }
.grossmarkt-name   { font-size: 0.95rem; font-weight: 800; color: #e65100; text-align: center; }
.grossmarkt-preis  { font-size: 0.85rem; color: #555; font-weight: 600; }
.grossmarkt-verfuegbar { font-size: 0.75rem; color: #888; }

/* Stepper in der Kachel */
.grossmarkt-stepper {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.35rem;
}
.gm-menge {
  font-size: 1.3rem;
  font-weight: 900;
  color: #1b5e20;
  min-width: 28px;
  text-align: center;
}
.gm-minus { background: linear-gradient(180deg,#ef5350,#c62828) !important; color:#fff !important; min-width:36px; height:36px; font-size:1.4rem; }
.gm-plus  { background: linear-gradient(180deg,#66bb6a,#388e3c) !important; color:#fff !important; min-width:36px; height:36px; font-size:1.4rem; }

/* Warenkorb-Leiste unten */
#grossmarkt-warenkorb {
  background: rgba(0,0,0,0.4);
  padding: 0.8rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-shrink: 0;
  border-top: 2px solid rgba(255,255,255,0.2);
}
#grossmarkt-gesamt {
  color: #fff3e0;
  font-size: 1rem;
  font-weight: 700;
  white-space: nowrap;
}
#grossmarkt-gesamt-preis {
  font-size: 1.3rem;
  font-weight: 900;
  color: #fff;
}

/* ================================================================
   PREIS-POPUP (beim Klick auf Preisschild)
   ================================================================ */
#preis-popup {
  position: fixed;
  z-index: 1000;
  background: #fffde7;
  border: 3px solid #f9a825;
  border-radius: 20px;
  padding: 1rem 1rem 0.9rem;
  width: 240px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  pointer-events: all;
  animation: popupIn 0.15s ease;
}

@keyframes popupIn {
  from { opacity: 0; transform: scale(0.85) translateY(8px); }
  to   { opacity: 1; transform: scale(1)    translateY(0); }
}

.preis-popup-titel {
  font-size: 1rem;
  font-weight: 800;
  color: #e65100;
  margin-bottom: 0.7rem;
  text-align: center;
}

/* Stepper: − Wert € + nebeneinander */
.preis-popup-stepper {
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid #4CAF50;
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
  margin-bottom: 0.8rem;
}

.preis-popup-minus,
.preis-popup-plus {
  width: 52px;
  height: 52px;
  font-size: 1.8rem;
  font-weight: 700;
  background: #e8f5e9;
  border: none;
  border-radius: 0;
  color: #2e7d32;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.preis-popup-minus:active,
.preis-popup-plus:active {
  background: #4CAF50;
  color: #fff;
}

.preis-popup-wert {
  flex: 1;
  text-align: center;
  font-size: 1.5rem;
  font-weight: 900;
  color: #1b5e20;
}

.preis-popup-euro {
  font-size: 1.1rem;
  font-weight: 700;
  color: #666;
  padding-right: 6px;
}

.preis-popup-btns {
  display: flex;
  gap: 0.5rem;
}

.preis-popup-btns .btn {
  flex: 1;
  min-height: 52px;
  font-size: 1.1rem;
  font-weight: 800;
}

.start-box {
  text-align: center;
  padding: 2rem;
  max-width: 480px;
  width: 100%;
}

.start-logo {
  font-size: 6rem;
  margin-bottom: 0.5rem;
  animation: bounce 1.5s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-16px); }
}

.start-title {
  font-size: clamp(2.4rem, 8vw, 4rem);
  font-weight: 900;
  color: #fff;
  text-shadow: 3px 3px 0 #2d6a10, 0 0 20px rgba(0,0,0,0.2);
  line-height: 1.1;
  margin-bottom: 0.8rem;
}

.start-subtitle {
  font-size: clamp(1rem, 3.5vw, 1.3rem);
  color: #e8f5e9;
  margin-bottom: 2rem;
  text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
}

/* ================================================================
   SCREEN 2: INTRO
   ================================================================ */
#screen-intro {
  background: rgba(0,0,0,0.5);
  align-items: center;
  justify-content: center;
}

#screen-intro.active {
  display: flex;
}

.dialog-box {
  background: #fffde7;
  border-radius: 24px;
  padding: 2rem;
  max-width: 420px;
  width: calc(100% - 2rem);
  text-align: center;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  border: 4px solid #f9a825;
}

.dialog-character {
  font-size: 5rem;
  margin-bottom: 1rem;
}

.dialog-text {
  font-size: clamp(1rem, 3.5vw, 1.2rem);
  line-height: 1.6;
  color: #4a4a4a;
  margin-bottom: 1.5rem;
  min-height: 4em;
}

/* ================================================================
   SCREEN 3: HAUPTSPIEL – STAND
   ================================================================ */
#screen-stand {
  /* Transparent – Canvas ist der Hintergrund */
  /* Klicks auf leere Fläche dürfen zum Canvas durchgehen */
  pointer-events: none;
}
/* Nur direkte Kinder brauchen Klick-Events */
#screen-stand > * {
  pointer-events: all;
}

/* ── HUD (Kopfzeile) ─────────────────────────────────────────── */
#hud {
  display: flex;
  justify-content: space-around;
  align-items: center;
  background: rgba(255, 255, 255, 0.92);
  border-radius: 0 0 20px 20px;
  padding: 0.5rem 1rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  gap: 0.5rem;
}

.hud-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 80px;
}

/* Uhr-Item: Canvas + Label untereinander */
.hud-clock-item {
  min-width: 60px;
}

#hud-clock {
  display: block;
  /* Schatten damit die Uhr sich vom Hintergrund abhebt */
  filter: drop-shadow(0 2px 3px rgba(0,0,0,0.2));
}

.hud-label {
  font-size: 0.75rem;
  color: #666;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hud-value {
  font-size: clamp(1.1rem, 4vw, 1.5rem);
  font-weight: 900;
  color: #2e7d32;
}

.hud-stars {
  font-size: clamp(0.9rem, 3vw, 1.2rem);
  color: #f9a825;
  letter-spacing: 0.05em;
}

.hud-stars-count {
  font-size: 0.7rem;
  color: #999;
  text-align: center;
}

/* ── Inventar Panel ─────────────────────────────────────────── */
#panel-inventory {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 24px 24px 0 0;
  padding: 1.2rem 1.2rem 1.5rem;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.2);
  max-height: 55vh;
  overflow-y: auto;
}

#panel-inventory h3 {
  font-size: 1.3rem;
  font-weight: 800;
  color: #2e7d32;
  margin-bottom: 0.8rem;
  text-align: center;
}

#inventory-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1rem;
  justify-content: center;
}

.inventory-item {
  background: #f1f8e9;
  border: 3px solid #aed581;
  border-radius: 16px;
  padding: 0.6rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  min-width: 120px;
}

.inventory-item-name {
  font-size: 1rem;
  font-weight: 700;
  color: #33691e;
}

.inventory-item-count {
  font-size: 0.9rem;
  color: #558b2f;
}

.inventory-item-price {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: 0.2rem;
}

.preis-stepper {
  display: flex;
  align-items: center;
  border: 2px solid #4CAF50;
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
}

.preis-stepper .preis-minus,
.preis-stepper .preis-plus {
  width: 44px;
  height: 44px;
  font-size: 1.5rem;
  font-weight: 700;
  background: #e8f5e9;
  border: none;
  border-radius: 0;
  color: #2e7d32;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.preis-stepper .preis-minus:active,
.preis-stepper .preis-plus:active {
  background: #4CAF50;
  color: #fff;
}

.preis-stepper .preis-wert {
  min-width: 52px;
  text-align: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: #1b5e20;
  padding: 0 4px;
}

.inventory-item-price .price-label {
  font-size: 1rem;
  color: #666;
}

/* ── Kunden-Panel ───────────────────────────────────────────── */
#panel-customer {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.97);
  border-radius: 24px 24px 0 0;
  padding: 1.2rem 1.2rem 1.5rem;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.25);
  text-align: center;
}

.customer-bubble {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
}

.customer-emoji {
  font-size: 3.5rem;
  flex-shrink: 0;
}

.speech-bubble {
  background: #e3f2fd;
  border-radius: 16px 16px 16px 4px;
  padding: 0.8rem 1rem;
  flex: 1;
  text-align: left;
  border: 2px solid #90caf9;
}

.speech-bubble p {
  font-size: clamp(1rem, 3.5vw, 1.15rem);
  line-height: 1.5;
  color: #1a237e;
  font-weight: 600;
}

#customer-payment-info {
  background: #f9fbe7;
  border-radius: 16px;
  padding: 0.8rem;
  border: 2px solid #dce775;
  margin-bottom: 1rem;
}

#customer-payment-info p {
  font-size: 1rem;
  margin-bottom: 0.3rem;
  color: #555;
}

#customer-payment-info strong {
  color: #2e7d32;
  font-size: 1.1rem;
}

/* ── Nacht-Overlay ──────────────────────────────────────────── */
.overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 20, 60, 0.88);
  display: flex;
  align-items: center;
  justify-content: center;
}

.overlay-content {
  background: #1a237e;
  border-radius: 24px;
  padding: 2rem;
  max-width: 380px;
  width: calc(100% - 2rem);
  text-align: center;
  border: 3px solid #5c6bc0;
  box-shadow: 0 0 40px rgba(92,107,192,0.5);
}

.overlay-emoji {
  font-size: 4rem;
  margin-bottom: 0.5rem;
}

.overlay-content h2 {
  font-size: clamp(1.5rem, 5vw, 2rem);
  color: #e8eaf6;
  margin-bottom: 0.5rem;
}

.overlay-content p {
  color: #c5cae9;
  font-size: 1rem;
  margin-bottom: 1rem;
}

#night-stats {
  background: rgba(255,255,255,0.1);
  border-radius: 12px;
  padding: 0.8rem;
  margin-bottom: 1.2rem;
  color: #e8eaf6;
  font-size: 1rem;
  line-height: 1.8;
}

/* ================================================================
   MODAL: WECHSELGELD (liegt über screen-stand, nicht eigenständiger Screen)
   ================================================================ */

/* Overlay-Hintergrund: leicht abgedunkelt, Stand noch sichtbar */
.change-modal-overlay {
  background: rgba(0, 0, 0, 0.55) !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 1rem !important;
}

#screen-change {
  overflow-y: auto;
}

#screen-change.active {
  display: flex;
}

#change-container {
  width: 100%;
  max-width: 420px;
  /* Modal-Box: weißer Hintergrund, abgerundete Ecken, Schatten */
  background: linear-gradient(160deg, #fff9c4 0%, #fff176 100%);
  border-radius: 24px;
  border: 3px solid #f9a825;
  box-shadow: 0 12px 40px rgba(0,0,0,0.45);
  padding: 1.2rem 1rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  max-height: 92vh;
  overflow-y: auto;
}

.change-title {
  font-size: clamp(1.3rem, 5vw, 1.8rem);
  font-weight: 900;
  color: #e65100;
  text-align: center;
  text-shadow: 1px 1px 0 rgba(255,255,255,0.7);
  margin: 0;
}

#change-info {
  background: #fff;
  border-radius: 16px;
  padding: 0.9rem 1rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  border: 2px solid #ffe082;
}

.change-info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.3rem 0;
  font-size: clamp(1rem, 3.5vw, 1.2rem);
  color: #555;
  border-bottom: 1px solid #f5f5f5;
}

.change-info-row:last-child {
  border-bottom: none;
}

.change-info-row strong {
  font-size: clamp(1.1rem, 4vw, 1.35rem);
  color: #1b5e20;
}

/* Große Eingabe-Anzeige wie ein Taschenrechner-Display */
#change-display {
  background: #1b5e20;
  border-radius: 18px;
  padding: 0.8rem 1.2rem;
  display: flex;
  align-items: baseline;
  justify-content: flex-end;
  gap: 0.3rem;
  box-shadow: inset 0 3px 8px rgba(0,0,0,0.35);
  border: 3px solid #2e7d32;
}

#change-input-display {
  font-size: clamp(2.5rem, 10vw, 3.5rem);
  font-weight: 900;
  color: #b9f6ca;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  min-width: 3ch;
  text-align: right;
}

.change-euro-sign {
  font-size: clamp(1.5rem, 5vw, 2rem);
  font-weight: 700;
  color: #69f0ae;
}

/* Numpad: 3×4 Raster großer Tasten */
#numpad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.numpad-btn {
  background: linear-gradient(180deg, #fff, #f5f5f5);
  border: 3px solid #e0e0e0;
  border-radius: 16px;
  font-size: clamp(1.6rem, 6vw, 2.2rem);
  font-weight: 800;
  color: #333;
  padding: 0.6rem 0;
  min-height: 70px;
  cursor: pointer;
  box-shadow: 0 4px 0 #bdbdbd;
  transition: transform 0.08s, box-shadow 0.08s;
  touch-action: manipulation;
  font-family: inherit;
}

.numpad-btn:active {
  transform: translateY(3px);
  box-shadow: 0 1px 0 #bdbdbd;
}

/* Komma-Taste */
.numpad-comma {
  background: linear-gradient(180deg, #fff9e6, #fff3cd);
  border-color: #ffe082;
  color: #e65100;
}

/* Löschen-Taste */
.numpad-del {
  background: linear-gradient(180deg, #ffebee, #ffcdd2);
  border-color: #ef9a9a;
  color: #c62828;
}

.selected-coin-tag:active {
  transform: scale(0.95);
}

/* ── Feedback ───────────────────────────────────────────────── */
#change-feedback {
  border-radius: 16px;
  padding: 0.8rem 1rem;
  font-size: 1.1rem;
  font-weight: 700;
  text-align: center;
}

#change-feedback.feedback-correct {
  background: #c8e6c9;
  color: #1b5e20;
  border: 3px solid #4CAF50;
}

#change-feedback.feedback-wrong {
  background: #ffcdd2;
  color: #b71c1c;
  border: 3px solid #f44336;
}

/* Bestätigen-Button zentriert */
#btn-change-confirm {
  width: 100%;
}

/* ================================================================
   BUTTONS – Global
   ================================================================ */

/* Basis-Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.4rem;
  font-size: 1rem;
  font-weight: 800;
  font-family: inherit;
  border: none;
  border-radius: 14px;
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.1s, filter 0.1s;
  box-shadow: 0 4px 0 rgba(0,0,0,0.25);
  /* Touch-Ziel mindestens 48px */
  min-height: 48px;
  touch-action: manipulation;
  pointer-events: all;
  text-decoration: none;
  line-height: 1.2;
}

.btn:active {
  transform: translateY(3px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.25);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Größen */
.btn-sm  { padding: 0.4rem 0.9rem;  font-size: 0.85rem; min-height: 36px; border-radius: 10px; }
.btn-lg  { padding: 0.85rem 1.8rem; font-size: 1.1rem; min-height: 54px; }
.btn-xl  { padding: 1rem 2.5rem;    font-size: 1.3rem; min-height: 60px; border-radius: 18px; }

/* Farben */
.btn-primary {
  background: linear-gradient(180deg, #42a5f5, #1976d2);
  color: #fff;
  box-shadow: 0 4px 0 #0d47a1;
}
.btn-primary:hover { filter: brightness(1.1); }

.btn-success {
  background: linear-gradient(180deg, #66bb6a, #388e3c);
  color: #fff;
  box-shadow: 0 4px 0 #1b5e20;
}
.btn-success:hover { filter: brightness(1.1); }

.btn-warning {
  background: linear-gradient(180deg, #ffa726, #f57c00);
  color: #fff;
  box-shadow: 0 4px 0 #e65100;
}
.btn-warning:hover { filter: brightness(1.1); }

.btn-danger {
  background: linear-gradient(180deg, #ef5350, #c62828);
  color: #fff;
  box-shadow: 0 4px 0 #b71c1c;
}

/* ================================================================
   RESPONSIVE ANPASSUNGEN
   ================================================================ */

/* Kleine Phones (< 360px) */
@media (max-width: 359px) {
  body { font-size: 16px; }
  .numpad-btn { min-height: 58px; font-size: 1.4rem; }
  #hud { padding: 0.4rem 0.5rem; }
}

/* Tablets / Desktop */
@media (min-width: 768px) {
  #panel-inventory,
  #panel-customer {
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    width: 600px;
    border-radius: 24px 24px 0 0;
  }

  .numpad-btn { min-height: 80px; font-size: 2.4rem; }
}

/* Landscape auf kleinen Geräten */
@media (max-height: 500px) and (orientation: landscape) {
  .start-logo { font-size: 3.5rem; }
  .start-title { font-size: 2rem; }
  #panel-inventory { max-height: 70vh; }
  .numpad-btn { min-height: 52px; font-size: 1.4rem; }
  #change-input-display { font-size: 2rem; }
}