:root {
  --bg-color: #0f172a;
  /* Slate 900 */
  --text-main: #f8fafc;
  /* Slate 50 */
  --text-muted: #94a3b8;
  /* Slate 400 */

  --panel-bg: rgba(30, 41, 59, 0.6);
  /* Translucent Slate 800 */
  --panel-border: rgba(255, 255, 255, 0.1);

  --btn-bg: rgba(255, 255, 255, 0.1);
  --btn-hover: rgba(255, 255, 255, 0.2);
  --btn-text: #f8fafc;

  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.15);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  overflow: hidden;
  /* Hide scrollbars, the canvas is the world */
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100vw;
  height: 100vh;
}

#ui-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  /* Let clicks pass through UI empty spots to the canvas*/
  display: flex;
  flex-direction: column;
  padding: 24px;
  z-index: 10;
}

header {
  margin-bottom: 24px;
}

header h1 {
  font-weight: 800;
  font-size: 2rem;
  letter-spacing: -0.025em;
  background: linear-gradient(to right, #60a5fa, #c084fc);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 4px;
}

header p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.world-clock {
  display: inline-block;
  margin-top: 8px;
  font-size: 1rem;
  font-weight: 800;
  background: linear-gradient(to right, #fbbf24, #f97316);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 0.05em;
}

#stats-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 280px;
  background: var(--panel-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--panel-border);
  padding: 16px 24px;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  max-height: 60vh;
  overflow-y: auto;
}

#entity-stats-panel {
  position: absolute;
  top: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 280px;
  background: var(--panel-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--panel-border);
  padding: 16px 24px;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  max-height: 70vh;
  overflow-y: auto;
}

#entity-stats-panel h2 {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 4px;
  background: linear-gradient(to right, #fbbf24, #f97316);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-section-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 4px;
  opacity: 0.7;
}

.hidden {
  display: none !important;
}

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

.stat-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-value {
  font-size: 1.1rem;
  font-weight: 800;
}

#controls {
  margin-top: auto;
  pointer-events: auto;
  /* Enable clicks on buttons */
  display: flex;
  gap: 12px;
}

.btn {
  background: var(--btn-bg);
  color: var(--btn-text);
  border: 1px solid var(--panel-border);
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  backdrop-filter: blur(8px);
  transition: all 0.2s ease;
  pointer-events: auto;
}

.btn:hover {
  background: var(--btn-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn:active {
  transform: translateY(0);
}

/* Canvas config */
#sim-canvas {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
}

#settings-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 50;
  display: flex;
  justify-content: center;
  align-items: center;
  pointer-events: auto;
}

#settings-modal.hidden {
  display: none !important;
}

.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

#settings-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 320px;
  background: var(--panel-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--panel-border);
  padding: 24px;
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
  z-index: 51;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.panel-header h2 {
  font-size: 1.25rem;
  font-weight: 800;
  background: linear-gradient(to right, #34d399, #3b82f6);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 0;
}

#game-over-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 100;
  display: flex;
  justify-content: center;
  align-items: center;
  pointer-events: auto;
}

#game-over-modal.hidden {
  display: none !important;
}

#game-over-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 580px;
  background: var(--panel-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--panel-border);
  padding: 32px 24px;
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
  z-index: 101;
  max-height: 85vh;
  overflow-y: auto;
}

#game-over-panel h2 {
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(to right, #f87171, #facc15);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-align: center;
  margin: 0;
}

.btn-icon {
  background: transparent;
  color: var(--text-muted);
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all 0.2s;
  padding: 0;
  line-height: 1;
}

.btn-icon:hover {
  color: var(--text-main);
  transform: scale(1.1);
}

#controls .btn-icon {
  padding: 8px 12px;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  background: var(--btn-bg);
  color: var(--btn-text);
}

#controls .btn-icon:hover {
  background: var(--btn-hover);
  box-shadow: var(--shadow-sm);
}

.btn-god.active {
  background: rgba(255, 255, 255, 0.3) !important;
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.5) !important;
  border-color: rgba(255, 255, 255, 0.8) !important;
}

#settings-panel hr {
  border: 0;
  height: 1px;
  background: var(--panel-border);
  margin: 4px 0;
}

.setting-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.setting-row label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.setting-row input[type="number"] {
  width: 60px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--panel-border);
  color: #fff;
  border-radius: 4px;
  padding: 4px;
  font-size: 0.85rem;
}

.setting-row input[type="checkbox"] {
  accent-color: #3b82f6;
  width: 16px;
  height: 16px;
  cursor: pointer;
}

/* Event Logs */
.event-logs-container {
  position: absolute;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  width: 360px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  pointer-events: none;
  z-index: 30;
  max-height: 60vh;
  overflow: hidden;
}

.event-log-entry {
  background: var(--panel-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--panel-border);
  border-left: 4px solid #facc15; /* Yellow highlight by default */
  padding: 12px 16px;
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  color: var(--text-main);
  font-size: 0.85rem;
  font-weight: 500;
  line-height: 1.4;
  animation: slide-in 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  pointer-events: auto;
  opacity: 1;
  width: 100%;
  text-align: center;
}

.event-log-entry.plague { border-left-color: #84cc16; }
.event-log-entry.romance { border-left-color: #f472b6; }
.event-log-entry.combat { border-left-color: #ef4444; }
.event-log-entry.divine { border-left-color: #60a5fa; }

.event-log-entry.fade-out {
  animation: fade-out 1s ease forwards;
}

@keyframes slide-in {
  from {
    transform: translateY(-20px) scale(0.95);
    opacity: 0;
  }
  to {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}

@keyframes fade-out {
  from {
    opacity: 1;
    transform: scale(1);
    margin-bottom: 0;
  }
  to {
    opacity: 0;
    transform: scale(0.95);
    margin-bottom: -100px; /* Collapse space */
  }
}