/* ==========================================================================
   STATS PANEL TABS & MILESTONES
   ========================================================================== */
.stats-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.stats-tab-btn {
  background: var(--color-surface-light);
  color: var(--color-text-secondary);
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  padding: 0.5rem 1.5rem;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.stats-tab-btn.active {
  background: var(--grad-primary);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-glow);
}
#stats-milestones-tab .stats-group {
  max-width: 420px;
  margin: 0 auto;
}
#milestone-list {
  margin-top: 1rem;
}
/* Milestone List Styles */
#milestone-list li {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 1rem;
  color: var(--color-text-secondary);
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  margin-bottom: 0.2rem;
  overflow: hidden;
  min-height: 2.2em;
}
#milestone-list li.milestone-achieved {
  color: var(--color-success);
  font-weight: 700;
  background: rgba(107, 207, 127, 0.08);
}

/* Milestone progress bar background */
.milestone-progress-bar {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.milestone-progress-fill {
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--color-success) 0%,
    var(--color-accent) 100%
  );
  opacity: 0.25;
  border-radius: var(--radius-sm);
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.milestone-content {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  width: 100%;
}
#milestone-list li .milestone-badge {
  background: var(--grad-accent);
  color: var(--color-bg);
  font-size: 0.85em;
  font-weight: 700;
  border-radius: 999px;
  padding: 0.2em 0.9em;
  margin-right: 0.5em;
  box-shadow: var(--shadow-sm);
}

/* End milestone progress bar styles */
/* ==========================================================================
   CONFIRM NEW GAME MODAL
   ========================================================================== */
.confirm-modal {
  z-index: 3000;
  background: rgba(10, 10, 15, 0.97);
}
.confirm-modal-box {
  background: var(--color-surface);
  padding: 2rem 2.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-width: 340px;
  text-align: center;
  margin: 0 auto;
}
.confirm-modal-box h2 {
  color: var(--color-accent);
  margin-bottom: 1rem;
  font-size: 1.5rem;
  font-weight: 700;
}
.confirm-modal-box p {
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
  font-size: 1rem;
}
.confirm-btn {
  font-weight: 600;
  padding: 0.7rem 2.2rem;
  border-radius: var(--radius-md);
  border: none;
  font-size: 1rem;
  margin: 0 0.5rem 0 0;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast),
    box-shadow var(--transition-fast);
}
.confirm-btn-yes {
  background: var(--grad-primary);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-md);
}
.confirm-btn-yes:hover {
  background: var(--color-primary-dark);
  color: #fff;
}
.confirm-btn-no {
  background: var(--color-surface-light);
  color: var(--color-text-secondary);
  box-shadow: var(--shadow-sm);
}
.confirm-btn-no:hover {
  background: var(--color-surface);
  color: var(--color-accent);
}
/* Money counter bounce animation */
/* Money counter bounce and pop animation */
/* Subtle money counter bounce and pop animation */
/* Subtle money counter bounce and pop animation on the money box */
#money-display.money-bounce {
  animation: money-bounce 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}
@keyframes money-bounce {
  0% {
    transform: scale(1);
    box-shadow: var(--shadow-md);
  }
  20% {
    transform: scale(1.07) rotate(-1deg);
    box-shadow: 0 0 0 0 var(--color-accent), 0 2px 8px 0 var(--color-accent);
  }
  40% {
    transform: scale(0.98) rotate(0.5deg);
    box-shadow: 0 0 0 0 var(--color-accent), 0 1px 4px 0 var(--color-accent);
  }
  60% {
    transform: scale(1.03) rotate(-0.5deg);
    box-shadow: 0 0 0 0 var(--color-accent), 0 2px 8px 0 var(--color-accent);
  }
  80% {
    transform: scale(0.99) rotate(0.5deg);
    box-shadow: 0 0 0 0 var(--color-accent), 0 1px 4px 0 var(--color-accent);
  }
  100% {
    transform: scale(1);
    box-shadow: var(--shadow-md);
  }
}
/* ==========================================================================
   MOBILE-FIRST IDLE MINER GAME STYLES
   ========================================================================== */

/* Reset & Variables */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  touch-action: manipulation;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
  font-size: 16px;
}

:root {
  /* Colors */
  --color-bg: #0a0a0f;
  --color-bg-secondary: #1a1a22;
  --color-surface: #252533;
  --color-surface-light: #323244;
  --color-text-primary: #ffffff;
  --color-text-secondary: #b3b3b3;
  --color-text-muted: #666677;

  /* Brand Colors */
  --color-primary: #ff6b35;
  --color-primary-dark: #e55a2b;
  --color-secondary: #4ecdc4;
  --color-secondary-dark: #45b5ad;
  --color-accent: #ffd93d;
  --color-accent-dark: #e6c234;

  /* Reusable Gradients & Common Effects */
  --grad-primary: linear-gradient(
    135deg,
    var(--color-primary) 0%,
    var(--color-primary-dark) 100%
  );
  --grad-secondary: linear-gradient(
    135deg,
    var(--color-secondary) 0%,
    var(--color-secondary-dark) 100%
  );
  --grad-accent: linear-gradient(
    135deg,
    var(--color-accent) 0%,
    var(--color-accent-dark) 100%
  );

  /* Status Colors */
  --color-success: #6bcf7f;
  --color-warning: #ffb347;
  --color-error: #ff6b6b;

  /* Effects */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(255, 107, 53, 0.3);

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* ==========================================================================
   BASE LAYOUT
   ========================================================================== */

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui,
    sans-serif;
  background: linear-gradient(
    135deg,
    var(--color-bg) 0%,
    var(--color-bg-secondary) 100%
  );
  color: var(--color-text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

#game-ui {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
.hidden {
  display: none !important;
}

/* ==========================================================================
   HEADER
   ========================================================================== */

header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: linear-gradient(
    135deg,
    var(--color-surface) 0%,
    var(--color-surface-light) 100%
  );
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--space-md);
  box-shadow: var(--shadow-md);
}

header .header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 100%;
}

header h1 {
  display: flex;
  align-items: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.logo01 {
  width: 32px;
  height: 32px;
  margin-right: var(--space-sm);
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

/* Money Display */
#money-display {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-md);
  background: var(--grad-accent);
  color: var(--color-bg);
  border-radius: var(--radius-xl);
  font-weight: 700;
  font-size: 1.1rem;
  box-shadow: var(--shadow-md);
  min-width: 80px;
}

/* Navigation */
nav {
  display: flex;
  gap: var(--space-xs);
  margin-left: var(--space-md);
}

nav button {
  padding: var(--space-sm) var(--space-md);
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  background: var(--color-surface-light);
  color: var(--color-text-secondary);
  min-height: 44px;
  white-space: nowrap;
}

nav button.active {
  background: var(--grad-primary);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-glow);
}

nav button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
nav button:active {
  transform: translateY(0);
}

/* ==========================================================================
   MAIN CONTENT
   ========================================================================== */

main {
  flex: 1;
  padding: var(--space-lg) var(--space-md);
  overflow-x: hidden;
}

/* ==========================================================================
   MINE SCREEN & RESOURCE PANELS
   ========================================================================== */

#screen-mine {
  min-height: 100%;
}

.resources-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  max-width: 100%;
}

.resource-panel {
  position: relative;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 3px solid transparent;
  transition: transform var(--transition-smooth);
  box-shadow: var(--shadow-lg), inset 0 0 0 4px rgba(255, 255, 255, 0.04);
}

/* Borders */
.resource-panel[data-resource="iron"] {
  border-color: #8b4513;
}
.resource-panel[data-resource="copper"] {
  border-color: #b87333;
}
.resource-panel[data-resource="bronze"] {
  border-color: #cd7f32;
}
.resource-panel[data-resource="silver"] {
  border-color: #c0c0c0;
}
.resource-panel[data-resource="gold"] {
  border-color: #ffd700;
}

.resource-panel:active {
  transform: scale(0.98);
}

/* Background variants */
.resource-panel[data-resource="iron"] {
  background: linear-gradient(
    135deg,
    rgba(139, 69, 19, 0.8) 0%,
    rgba(160, 82, 45, 0.6) 50%,
    rgba(139, 69, 19, 0.8) 100%
  );
}
.resource-panel[data-resource="iron"]::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("images/iron/iron-background.png");
  background-size: cover;
  background-position: center;
  opacity: 0.8;
  z-index: -1;
}

.resource-panel[data-resource="copper"] {
  background: linear-gradient(
    135deg,
    rgba(184, 115, 51, 0.8) 0%,
    rgba(205, 127, 50, 0.6) 50%,
    rgba(184, 115, 51, 0.8) 100%
  );
}
.resource-panel[data-resource="copper"]::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("images/copper/copper-background.png");
  background-size: cover;
  background-position: center;
  opacity: 0.8;
  z-index: -1;
}

.resource-panel[data-resource="bronze"] {
  background: linear-gradient(
    135deg,
    rgba(205, 127, 50, 0.8) 0%,
    rgba(218, 165, 32, 0.6) 50%,
    rgba(205, 127, 50, 0.8) 100%
  );
}
.resource-panel[data-resource="bronze"]::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("images/bronze/bronze-background.png");
  background-size: cover;
  background-position: center;
  opacity: 0.8;
  z-index: -1;
}

.resource-panel[data-resource="silver"] {
  background: linear-gradient(
    135deg,
    rgba(192, 192, 192, 0.85) 0%,
    rgba(220, 220, 220, 0.65) 50%,
    rgba(192, 192, 192, 0.85) 100%
  );
}
.resource-panel[data-resource="silver"]::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("images/silver/silver-background.png");
  background-size: cover;
  background-position: center;
  opacity: 0.8;
  z-index: -1;
}

.resource-panel[data-resource="gold"] {
  background: linear-gradient(
    135deg,
    rgba(255, 215, 0, 0.9) 0%,
    rgba(255, 223, 80, 0.7) 50%,
    rgba(255, 215, 0, 0.9) 100%
  );
}
.resource-panel[data-resource="gold"]::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("images/gold/gold-background.png");
  background-size: cover;
  background-position: center;
  opacity: 0.8;
  z-index: -1;
}

/* Resource Display */
.resource-display {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.resource-display h3 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-text-primary);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.iron-icon,
.copper-icon,
.bronze-icon,
.silver-icon,
.gold-icon {
  width: 48px;
  height: 48px;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

/* Action Buttons */
.resource-actions {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

/* Unified button selectors */
#mine-iron-btn,
#mine-copper-btn,
#mine-bronze-btn,
#mine-silver-btn,
#mine-gold-btn,
#sell-iron-btn,
#sell-copper-btn,
#sell-bronze-btn,
#sell-silver-btn,
#sell-gold-btn {
  flex: 1;
  min-width: 120px;
  padding: var(--space-md) var(--space-lg);
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-smooth);
  min-height: 48px;
  position: relative;
  overflow: hidden;
}

/* Mine buttons */
#mine-iron-btn,
#mine-copper-btn,
#mine-bronze-btn,
#mine-silver-btn,
#mine-gold-btn {
  background: var(--grad-primary);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-md);
}

/* Sell buttons */
#sell-iron-btn,
#sell-copper-btn,
#sell-bronze-btn,
#sell-silver-btn,
#sell-gold-btn {
  background: var(--grad-secondary);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-md);
}

/* Disabled Sell Buttons */
#sell-iron-btn:disabled,
#sell-copper-btn:disabled,
#sell-bronze-btn:disabled,
#sell-silver-btn:disabled,
#sell-gold-btn:disabled {
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: not-allowed;
  box-shadow: none;
}

/* Auto Status */
.auto-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-md);
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-md);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  flex-wrap: wrap;
}
.auto-status p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin: 0;
  flex: 1;
}

/* Toggle Switch */
.switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 28px;
  flex-shrink: 0;
}
.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}
.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-surface);
  transition: var(--transition-smooth);
  border-radius: 28px;
  border: 2px solid rgba(255, 255, 255, 0.1);
}
.slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 2px;
  bottom: 2px;
  background: var(--color-text-primary);
  transition: var(--transition-smooth);
  border-radius: 50%;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}
.switch input:checked + .slider {
  background: var(--grad-secondary);
}
.switch input:checked + .slider:before {
  transform: translateX(20px);
}

/* Locked State */
.resource-panel.locked {
  filter: grayscale(100%) brightness(0.7);
}

.lock-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  z-index: 10;
}
.lock-overlay button {
  padding: var(--space-md) var(--space-xl);
  background: var(--grad-accent);
  color: var(--color-bg);
  border: none;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 1.1rem;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-smooth);
  min-height: 48px;
}
.lock-overlay button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(255, 211, 61, 0.4);
}

/* ==========================================================================
   SHOP PANEL  (FULL-SCREEN TAB VERSION)
   ========================================================================== */

#screen-shop {
  position: static;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md);
  background: transparent;
  backdrop-filter: none;
  box-shadow: none;
  overflow-y: visible;
}

#overlay {
  display: none;
} /* no drawer overlay anymore */

/* Resource filter tabs */
.resource-tabs {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  overflow-x: auto;
  padding-bottom: var(--space-xs);
}

.resource-tab {
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-surface);
  border: none;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  min-height: 44px;
}
.resource-tab.active {
  background: var(--grad-primary);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-md);
}
.resource-tab.locked {
  display: none;
}

/* === Cleaner Shop Grid === */
#shop-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-md);
  list-style: none;
  padding: 0;
  margin: 0;
}

#shop-list li {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast),
    box-shadow var(--transition-fast);
}
#shop-list li:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.shop-item-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-sm);
  gap: var(--space-sm);
}
.shop-item-name {
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text-primary);
}
.shop-item-price {
  background: rgba(255, 255, 255, 0.08);
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  color: var(--color-text-secondary);
}
.shop-item-desc {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.35;
}
.shop-item-meta {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}
.shop-bar {
  height: 6px;
  background: rgba(255, 255, 255, 0.07);
  border-radius: 3px;
  overflow: hidden;
  margin-top: var(--space-xs);
}
.shop-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--grad-secondary);
  transition: width 0.25s ease;
}

.shop-btn {
  padding: var(--space-sm) var(--space-lg);
  background: var(--grad-secondary);
  color: var(--color-text-primary);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 44px;
  width: 100%;
  margin-top: var(--space-sm);
}
.shop-btn:disabled {
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: not-allowed;
}
.shop-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Empty state */
.shop-empty {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--color-text-muted);
  padding: var(--space-lg) var(--space-md);
  font-size: 0.9rem;
}

/* ==========================================================================
   OVERLAYS & MODALS
   ========================================================================== */

.overlay {
  position: fixed;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10, 10, 15, 0.95) 0%,
    rgba(26, 26, 34, 0.98) 100%
  );
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 2000;
  padding: var(--space-xl);
}

.overlay#main-menu {
  background-image: url("images/main/main-menu-background.png");
  background-size: cover;
  background-position: center;
  background-blend-mode: overlay;
}

.overlay h1,
.overlay h2 {
  color: var(--color-accent);
  margin-bottom: var(--space-xl);
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  text-shadow: 0 4px 8px rgba(0, 0, 0, 0.5);
}

/* Menu polish */
.tagline {
  margin: var(--space-sm) 0 var(--space-lg);
  color: var(--color-text-secondary);
  font-size: 1rem;
  letter-spacing: 0.05em;
  text-align: center;
}

.save-card {
  background: var(--color-surface);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  margin-bottom: var(--space-md);
  width: 260px;
  text-align: left;
}
.save-card h3 {
  margin-bottom: var(--space-sm);
  color: var(--color-accent);
}
.save-card p {
  margin: 0 0 var(--space-xs);
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}
.save-card button {
  width: 100%;
  margin-top: var(--space-sm);
  min-height: 44px;
}

.ghost-btn {
  background: transparent;
  color: var(--color-text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  margin-top: var(--space-sm);
  transition: all var(--transition-fast);
  font-size: 0.9rem;
}
.ghost-btn:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.changelog {
  max-height: 160px;
  overflow-y: auto;
  margin-top: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  text-align: left;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* Title shimmer */
@keyframes shine {
  0% {
    background-position: -200px 0;
  }
  100% {
    background-position: 200px 0;
  }
}
#main-menu h1 {
  background: linear-gradient(90deg, #fff 0%, #ffd93d 50%, #fff 100%);
  background-size: 400px 100%;
  -webkit-background-clip: text;
  color: transparent;
  animation: shine 3s linear infinite;
}

.overlay button {
  background: var(--grad-primary);
  color: var(--color-text-primary);
  border: none;
  padding: var(--space-lg) var(--space-xl);
  margin: var(--space-sm) 0;
  font-size: 1.2rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-smooth);
  min-width: 200px;
  min-height: 48px;
}
.overlay button:hover:not(:disabled) {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}
.overlay button:disabled {
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: not-allowed;
  box-shadow: none;
}

/* Settings */
#settings-menu label {
  display: flex;
  align-items: center;
  margin: var(--space-lg) 0;
  color: var(--color-text-primary);
  font-size: 1rem;
  cursor: pointer;
}
#settings-menu input[type="checkbox"] {
  margin-right: var(--space-md);
  transform: scale(1.2);
}

/* ==========================================================================
   SAVE & MENU BUTTON
   ========================================================================== */
#btn-save-menu {
  background: var(--grad-secondary);
  color: var(--color-text-primary);
  border: none;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-weight: 600;
  transition: all var(--transition-fast);
  min-height: 44px;
}
#btn-save-menu:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ==========================================================================
   ANIMATIONS & EFFECTS
   ========================================================================== */

@keyframes sell-pop {
  0% {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
  100% {
    transform: translateY(-40px) scale(1.5);
    opacity: 0;
  }
}
.sell-pop {
  position: absolute;
  top: -20px;
  right: var(--space-lg);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-success);
  animation: sell-pop 1s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
  pointer-events: none;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

@keyframes ripple {
  0% {
    transform: scale(0);
    opacity: 1;
  }
  100% {
    transform: scale(4);
    opacity: 0;
  }
}
.button-ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.6);
  transform: scale(0);
  animation: ripple 0.6s linear;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

footer {
  padding: var(--space-lg) var(--space-md);
  background: var(--color-surface);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: auto;
}
footer .footer-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  text-align: center;
  flex-wrap: wrap;
}
footer .footer-content small,
footer .footer-content p,
footer .footer-content a {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  text-decoration: none;
  transition: color var(--transition-fast);
}
footer .footer-content a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

/* ==========================================================================
   STATS PANEL
   ========================================================================== */

#screen-stats {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-lg);
}
.stats-group {
  background: var(--color-surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-fast),
    box-shadow var(--transition-fast);
}
.stats-group:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.stats-group > h3 {
  margin-bottom: var(--space-md);
  font-size: 1.1rem;
  color: var(--color-accent);
  letter-spacing: 0.02em;
}

.stats-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}
.stats-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.35rem 0.6rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  font-variant-numeric: tabular-nums;
}
.stats-list li span {
  color: var(--color-text-primary);
  font-weight: 600;
  margin-left: 0.5rem;
}

.stats-money {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-variant-numeric: tabular-nums;
}
.stats-money p {
  display: flex;
  justify-content: space-between;
  padding: 0.3rem 0.5rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-text-secondary);
}
.stats-money p span {
  color: var(--color-text-primary);
  font-weight: 600;
}

.stat-bar {
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 0.25rem;
}
.stat-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--grad-primary);
  transition: width 0.4s ease;
}

.stats-group::before {
  content: "";
  position: absolute;
  top: -40px;
  right: -40px;
  width: 120px;
  height: 120px;
  background: radial-gradient(var(--color-accent) 0%, transparent 70%);
  opacity: 0.07;
  transform: rotate(25deg);
}

#screen-stats.hidden .stat-bar-fill {
  transition: none;
}

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

@media (max-width: 480px) {
  .stats-list li {
    font-size: 0.8rem;
    padding: 0.3rem 0.4rem;
  }
  .stats-money p {
    font-size: 0.85rem;
  }
}

@media (max-width: 360px) {
  header {
    padding: var(--space-sm);
  }
  header h1 {
    font-size: 1.3rem;
  }
  nav {
    gap: var(--space-xs);
    margin-left: var(--space-sm);
  }
  nav button {
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.8rem;
  }
  .resource-actions {
    flex-direction: column;
  }
  .resource-actions button {
    min-width: 100%;
  }
}

@media (max-height: 500px) and (orientation: landscape) {
  header {
    position: relative;
    padding: var(--space-sm) var(--space-md);
  }
  main {
    padding: var(--space-md);
  }
  .resources-container {
    gap: var(--space-md);
  }
  .resource-panel {
    padding: var(--space-md);
  }
}

@media (min-width: 768px) {
  .resources-container {
    flex-direction: row;
    flex-wrap: wrap;
  }
  .resource-panel {
    flex: 1;
    min-width: 300px;
  }
}

@media (min-width: 1024px) {
  main {
    max-width: 1200px;
    margin: 0 auto;
  }
  .resources-container {
    gap: var(--space-xl);
  }
}

/* ==========================================================================
   BUY MAX BUTTON LAYOUT (shares same visual style as .shop-btn)
   ========================================================================== */
.shop-btn-row {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}
.shop-btn-row .shop-btn {
  flex: 1;
}

#whats-new {
  width: 100%;
  max-width: 420px;
  margin-top: var(--space-md);
}

.changelog {
  max-height: 180px;
  overflow-y: auto;
  padding: var(--space-sm) var(--space-md);
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  line-height: 1.4;
  text-align: left;
  white-space: normal;
}
.changelog h4 {
  margin: 0.6rem 0 0.3rem;
  color: var(--color-accent);
  font-size: 0.95rem;
  font-weight: 600;
}
.changelog ul {
  list-style: disc;
  margin: 0.25rem 0 0.4rem 1.2rem;
  padding-left: 0;
}
.changelog li {
  margin: 0.2rem 0;
}
.changelog p {
  margin: 0.25rem 0;
}

/* ==========================================================================
   ACCESSIBILITY: REDUCED MOTION
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}