/* GENERAL STYLES */
body {
  background-color: #000;
  color: #fff;
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 20px;
}

/* SPACE BACKGROUND */
#space-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at center, #0a1a3f 0%, #000000 100%);
  z-index: -10;
  overflow: hidden;
}

.nebula {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.3;
  background: radial-gradient(
    circle at center,
    rgba(255, 100, 100, 0.3) 0%,
    rgba(0, 0, 0, 0) 70%
  );
  animation: pulse 15s infinite alternate ease-in-out;
}

.nebula:nth-child(2n) {
  background: radial-gradient(
    circle at center,
    rgba(100, 100, 255, 0.3) 0%,
    rgba(0, 0, 0, 0) 70%
  );
  animation-delay: 5s;
}

.nebula:nth-child(3n) {
  background: radial-gradient(
    circle at center,
    rgba(100, 255, 100, 0.2) 0%,
    rgba(0, 0, 0, 0) 70%
  );
  animation-delay: 7s;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.2;
    transform: scale(1);
  }
  50% {
    opacity: 0.4;
    transform: scale(1.1);
  }
}

.star {
  position: absolute;
  background-color: #fff;
  border-radius: 50%;
  animation: twinkle 4s infinite ease-in-out;
}

.star-large {
  width: 2px !important;
  height: 2px !important;
  box-shadow: 0 0 8px 2px rgba(255, 255, 255, 0.8);
}

@keyframes twinkle {
  0%,
  100% {
    opacity: 0.3;
    box-shadow: 0 0 5px 1px rgba(255, 255, 255, 0.3);
  }
  50% {
    opacity: 1;
    box-shadow: 0 0 10px 2px rgba(255, 255, 255, 0.8);
  }
}

.shooting-star {
  position: absolute;
  width: 100px;
  height: 1px;
  background: linear-gradient(
    to right,
    rgba(255, 255, 255, 0),
    rgba(255, 255, 255, 1) 50%,
    rgba(255, 255, 255, 0)
  );
  opacity: 0;
  transform-origin: right;
  animation: shooting-star 6s linear infinite;
}

@keyframes shooting-star {
  0% {
    opacity: 0;
    transform: translateX(0) translateY(0) rotate(0deg);
  }
  1% {
    opacity: 1;
  }
  5% {
    opacity: 0;
    transform: translateX(-500px) translateY(300px) rotate(45deg);
  }
  100% {
    opacity: 0;
    transform: translateX(-500px) translateY(300px) rotate(45deg);
  }
}

/* TIMELINE CHART */
#timeline {
  width: 100%;
  height: 600px;
  margin: 0 auto;
  border: 2px solid #333;
  border-radius: 10px;
  box-shadow: 0 0 25px rgba(100, 150, 255, 0.3);
  position: relative;
  overflow: hidden;
}

@keyframes fadeInScale {
  0% {
    opacity: 0;
    transform: scale(0.2);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* NAVIGATION BUTTONS */
.button-container {
  display: flex;
  justify-content: center;
  margin-top: 20px;
  gap: 30px;
}

.arrow-button {
  background-color: rgba(68, 68, 68, 0.7);
  color: #fff;
  border: 1px solid #777;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5), 0 0 15px rgba(100, 150, 255, 0.3);
  transition: all 0.3s ease;
}

.arrow-button:hover {
  background-color: rgba(100, 150, 255, 0.4);
  transform: scale(1.1);
  box-shadow: 0 0 20px rgba(100, 150, 255, 0.7);
}

.arrow-button:active {
  transform: scale(0.95);
}

/* PLANET CARD */
.timeline-container {
  position: relative;
}

#planet-card {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 350px;
  height: auto;
  max-height: 90vh;
  background: linear-gradient(
    145deg,
    rgba(20, 40, 80, 0.95) 0%,
    rgba(10, 20, 40, 0.98) 100%
  );
  border-radius: 15px;
  border: 2px solid rgba(100, 150, 255, 0.6);
  box-shadow: 0 0 40px rgba(100, 150, 255, 0.5),
    inset 0 0 30px rgba(100, 150, 255, 0.2);
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  z-index: 1000;
  opacity: 0;
  transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275),
    opacity 0.5s ease-in-out;
  overflow-y: auto;
  pointer-events: none;
}

#planet-card.visible {
  transform: translate(-50%, -50%) scale(1);
  opacity: 1;
  pointer-events: auto;
}

.planet-name {
  font-size: 1.8em;
  color: #ffd700;
  margin-bottom: 10px;
  text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.planet-image-container {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  overflow: hidden;
  margin: 10px 0;
  border: 3px solid rgba(100, 150, 255, 0.6);
  box-shadow: 0 0 20px rgba(100, 150, 255, 0.6);
  background: radial-gradient(
      circle at 65% 15%,
      rgba(255, 255, 255, 0.1) 1px,
      transparent 3%
    ),
    radial-gradient(
      circle at 30% 40%,
      rgba(255, 255, 255, 0.2) 1px,
      transparent 4%
    ),
    radial-gradient(
      circle at 70% 90%,
      rgba(255, 255, 255, 0.1) 1px,
      transparent 2%
    );
  position: relative;
}

.card-shine {
  position: absolute;
  top: 0;
  left: -100%;
  width: 80%;
  height: 100%;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.1) 25%,
    rgba(255, 255, 255, 0.2) 50%,
    rgba(255, 255, 255, 0.1) 75%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: skewX(-15deg);
  animation: card-shine-animation 3s ease-in-out infinite;
}

@keyframes card-shine-animation {
  0% {
    left: -100%;
  }
  20% {
    left: 100%;
  }
  100% {
    left: 100%;
  }
}

/* CARD TABS */
.card-tabs {
  display: flex;
  justify-content: space-around;
  margin: 10px 0;
  width: 100%;
}

.tab-button {
  background-color: rgba(30, 60, 100, 0.6);
  color: #adf;
  border: 1px solid rgba(100, 150, 255, 0.4);
  border-radius: 5px;
  padding: 8px 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  flex-grow: 1;
  margin: 0 5px;
  font-size: 0.9em;
}

.tab-button:hover {
  background-color: rgba(40, 80, 120, 0.7);
}

.tab-button.active {
  background-color: rgba(60, 100, 180, 0.7);
  border-color: rgba(100, 150, 255, 0.8);
  box-shadow: 0 0 10px rgba(100, 150, 255, 0.4);
}

.tab-content {
  width: 100%;
  transition: all 0.3s ease;
}

.tab-content.hidden {
  display: none;
}

/* PLANET STATS */
.planet-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
  width: 100%;
}

.stat {
  background-color: rgba(30, 60, 100, 0.6);
  border-radius: 8px;
  padding: 10px 5px;
  border: 1px solid rgba(100, 150, 255, 0.4);
  transition: all 0.3s ease;
}

.stat:hover {
  background-color: rgba(40, 80, 120, 0.7);
  transform: translateY(-3px);
}

.stat-name {
  color: #adf;
  font-size: 0.85em;
  margin-bottom: 5px;
  display: block;
}

.stat-value {
  font-size: 1.1em;
  font-weight: bold;
}

.planet-type {
  position: absolute;
  top: 5px;
  right: 5px;
  background-color: rgba(255, 215, 0, 0.8);
  color: #000;
  padding: 3px 8px;
  border-radius: 10px;
  font-size: 0.7em;
  font-weight: bold;
}

/* HEADER AND OVERLAY */
#header {
  text-align: center;
  margin-bottom: 20px;
  font-size: 1.2em;
  color: #adf;
  text-shadow: 0 0 10px rgba(100, 150, 255, 0.8);
}

.close-button {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 30px;
  height: 30px;
  background-color: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 16px;
  color: white;
}

.close-button:hover {
  background-color: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}

#overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 900;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

#overlay.active {
  opacity: 1;
  pointer-events: auto;
}

/* MAIN CONTAINER */
.container {
  display: flex;
  position: relative;
}

.main-content {
  flex-grow: 1;
  position: relative;
}

#timeline {
  position: relative;
  height: 600px;
}

/* SCATTER PLOT */
#scatter-container {
  margin-top: 20px;
  width: 100%;
}

#scatter-plot {
  width: 100%;
  height: 430px;
  border: 2px solid #333;
  border-radius: 10px;
  box-shadow: 0 0 25px rgba(100, 150, 255, 0.3);
  position: relative;
  overflow: hidden;
}

.section-title {
  color: #adf;
  text-align: center;
  font-size: 1.4em;
  margin-bottom: 15px;
  text-shadow: 0 0 10px rgba(100, 150, 255, 0.5);
}

/* FILTER PANEL */
.filter-panel {
  background-color: rgba(20, 40, 80, 0.7);
  border-radius: 10px;
  padding: 10px;
  margin-bottom: 15px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  box-shadow: 0 0 15px rgba(100, 150, 255, 0.2);
  border: 1px solid rgba(100, 150, 255, 0.3);
}

.filter-group {
  margin: 5px;
  flex-grow: 1;
  min-width: 180px;
}

.filter-group label {
  display: block;
  margin-bottom: 3px;
  color: #adf;
  font-size: 0.85em;
}

.filter-button {
  background-color: rgba(60, 100, 180, 0.7);
  color: #fff;
  border: 1px solid rgba(100, 150, 255, 0.4);
  border-radius: 5px;
  padding: 5px 10px;
  cursor: pointer;
  transition: all 0.3s ease;
  margin: 5px;
  font-size: 0.85em;
}

.filter-button:hover {
  background-color: rgba(80, 120, 200, 0.8);
  box-shadow: 0 0 10px rgba(100, 150, 255, 0.5);
}

.slider,
.range {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: linear-gradient(to right, #1a3a6a, #4682b4);
  outline: none;
  opacity: 0.8;
  transition: opacity 0.2s;
  margin: 10px 0;
}

.slider::-webkit-slider-thumb,
.range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #adf;
  cursor: pointer;
  box-shadow: 0 0 5px rgba(100, 150, 255, 0.8);
}

.slider::-moz-range-thumb,
.range::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #adf;
  cursor: pointer;
  box-shadow: 0 0 5px rgba(100, 150, 255, 0.8);
}

.slider-value {
  display: inline-block;
  width: 40px;
  text-align: center;
  margin-left: 10px;
  color: #adf;
}

.range-slider {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.range-value {
  width: 50px;
  text-align: center;
  color: #adf;
}

.slider-container {
  position: relative;
  width: 100%;
  margin: 0 10px;
}

.select-filter {
  width: 100%;
  padding: 8px;
  border-radius: 5px;
  background-color: rgba(30, 60, 100, 0.6);
  color: #fff;
  border: 1px solid rgba(100, 150, 255, 0.4);
  outline: none;
}

.select-filter option {
  background-color: #0a1a3f;
}

/* SCROLLBAR */
::-webkit-scrollbar {
  width: 12px;
  height: 12px;
  background: rgba(0, 0, 0, 0.7);
}

::-webkit-scrollbar-track {
  background: linear-gradient(to right, #0a0e23, #000000);
  border-radius: 10px;
  box-shadow: inset 0 0 5px rgba(100, 150, 255, 0.2);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(
    to bottom,
    rgba(51, 153, 255, 0.7),
    rgba(70, 100, 200, 0.7)
  );
  border-radius: 10px;
  border: 2px solid rgba(20, 40, 80, 0.5);
  box-shadow: 0 0 10px rgba(100, 200, 255, 0.7);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(
    to bottom,
    rgba(80, 180, 255, 0.8),
    rgba(100, 130, 230, 0.8)
  );
  box-shadow: 0 0 15px rgba(120, 220, 255, 0.9);
}

::-webkit-scrollbar-corner {
  background: #0a0e23;
}

/* SPLASH SCREEN */
#splash-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 1100;
  background-color: rgba(0, 0, 0, 0.95);
  transition: opacity 1.5s ease-in-out, transform 1.5s ease-in-out;
}

#splash-screen.hidden {
  opacity: 0;
  transform: translateY(-100%);
  pointer-events: none;
}

#splash-title {
  font-size: 3.5em;
  margin-bottom: 20px;
  color: #ffd700;
  text-align: center;
  text-shadow: 0 0 20px rgba(255, 215, 0, 0.7);
  animation: glow 2s infinite alternate;
}

#splash-subtitle {
  font-size: 1.5em;
  color: #adf;
  margin-bottom: 50px;
  text-align: center;
  max-width: 80%;
}

#start-button {
  padding: 12px 40px;
  font-size: 1.6em;
  background: linear-gradient(
    145deg,
    rgba(30, 60, 100, 0.8),
    rgba(10, 20, 40, 0.9)
  );
  color: #adf;
  border: 2px solid rgba(100, 150, 255, 0.6);
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 0 20px rgba(100, 150, 255, 0.5),
    inset 0 0 10px rgba(100, 150, 255, 0.2);
  text-shadow: 0 0 10px rgba(100, 150, 255, 0.8);
}

#start-button:hover {
  background: linear-gradient(
    145deg,
    rgba(40, 80, 130, 0.8),
    rgba(20, 40, 80, 0.9)
  );
  transform: translateY(-5px);
  box-shadow: 0 0 30px rgba(100, 150, 255, 0.7),
    inset 0 0 15px rgba(100, 150, 255, 0.3);
}

#start-button:active {
  transform: translateY(-2px);
}

.content-container {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 1s ease-in-out, transform 1s ease-in-out;
  width: 100%;
}

.content-container.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes glow {
  from {
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
  }
  to {
    text-shadow: 0 0 20px rgba(255, 215, 0, 0.9),
      0 0 30px rgba(255, 215, 0, 0.7);
  }
}

.planet-image-container {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  overflow: hidden;
  margin: 10px 0;
  border: 3px solid rgba(100, 150, 255, 0.6);
  box-shadow: 0 0 20px rgba(100, 150, 255, 0.6);
  position: relative;
  background: transparent;
}

.planet-image-container canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.planet-type {
  position: absolute;
  top: 5px;
  right: 5px;
  z-index: 10;
  background-color: rgba(255, 215, 0, 0.8);
  color: #000;
  padding: 3px 8px;
  border-radius: 10px;
  font-size: 0.7em;
  font-weight: bold;
}

/* DISCOVERY METHODS */
.checkbox-container {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  max-height: 80px;
  overflow-y: auto;
  padding: 4px;
  background-color: rgba(20, 40, 80, 0.4);
  border-radius: 5px;
}

.method-checkbox {
  display: flex;
  align-items: center;
  background-color: rgba(30, 60, 100, 0.6);
  border-radius: 5px;
  padding: 2px 6px;
  transition: all 0.3s ease;
}

.method-checkbox label {
  font-size: 0.8em;
  margin-bottom: 0;
}

.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
}

.discovery-methods-group {
  flex-grow: 3;
}

.method-checkbox {
  display: flex;
  align-items: center;
  background-color: rgba(30, 60, 100, 0.6);
  border-radius: 5px;
  padding: 4px 8px;
  transition: all 0.3s ease;
}

.method-checkbox:hover {
  background-color: rgba(40, 80, 120, 0.7);
}

.method-checkbox input {
  margin-right: 5px;
}

.method-checkbox label {
  color: #adf;
  font-size: 0.85em;
  cursor: pointer;
}

.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

@keyframes pulse-glow {
  0% {
    filter: brightness(1);
  }
  50% {
    filter: brightness(1.3);
  }
  100% {
    filter: brightness(1);
  }
}

/* RANGE SLIDER */
.range-slider {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
  padding: 0 10px;
}

.slider-container {
  position: relative;
  width: 100%;
  height: 6px;
  margin: 0 15px;
}

.slider-track {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  border-radius: 3px;
  background: linear-gradient(
    to right,
    #1a3a6a,
    rgba(100, 150, 255, 0.7),
    #4682b4
  );
}

.range {
  position: absolute;
  width: 100%;
  pointer-events: none;
  -webkit-appearance: none;
  height: 6px;
  opacity: 0.01;
  z-index: 5;
  margin: 0;
}

.range::-webkit-slider-thumb {
  pointer-events: auto;
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #adf;
  cursor: pointer;
  box-shadow: 0 0 8px rgba(100, 150, 255, 0.8), 0 0 0 3px rgba(10, 20, 40, 0.8);
  z-index: 10;
  opacity: 1;
}

.range::-moz-range-thumb {
  pointer-events: auto;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #adf;
  cursor: pointer;
  box-shadow: 0 0 8px rgba(100, 150, 255, 0.8), 0 0 0 3px rgba(10, 20, 40, 0.8);
  z-index: 10;
  opacity: 1;
}

.min-year::-webkit-slider-thumb {
  background: #5a9de0;
}

.max-year::-webkit-slider-thumb {
  background: #adf;
}

.min-year::-moz-range-thumb {
  background: #5a9de0;
}

.max-year::-moz-range-thumb {
  background: #adf;
}

.range-value {
  width: 50px;
  text-align: center;
  color: #adf;
  font-size: 0.9em;
}

.slider-cap {
  position: absolute;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: linear-gradient(145deg, #1e3f6a, #2a5c96);
  border: 2px solid rgba(100, 150, 255, 0.6);
  box-shadow: 0 0 8px rgba(100, 150, 255, 0.5);
  top: 50%;
  transform: translateY(-50%);
  z-index: 4;
  pointer-events: none;
}

.slider-cap-min {
  left: -13px;
}

.slider-cap-max {
  right: -13px;
}

.range::-webkit-slider-thumb {
  z-index: 10;
  box-shadow: 0 0 12px rgba(100, 150, 255, 0.9), 0 0 0 3px rgba(10, 20, 40, 0.8);
}

.range::-moz-range-thumb {
  z-index: 10;
  box-shadow: 0 0 12px rgba(100, 150, 255, 0.9), 0 0 0 3px rgba(10, 20, 40, 0.8);
}

@keyframes subtle-pulse {
  0% {
    filter: brightness(1) drop-shadow(0 0 2px rgba(255, 215, 0, 0.3));
  }
  50% {
    filter: brightness(1.2) drop-shadow(0 0 4px rgba(255, 215, 0, 0.5));
  }
  100% {
    filter: brightness(1) drop-shadow(0 0 2px rgba(255, 215, 0, 0.3));
  }
}

#timeline .scatterlayer .trace .points path {
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275),
    filter 0.3s ease, stroke 0.3s ease, stroke-width 0.3s ease;
  transform-origin: center center;
  cursor: pointer;
}

.planet-hovered {
  transform: scale(1.5) !important;
  filter: brightness(1.3) drop-shadow(0 0 5px rgba(255, 215, 0, 0.6)) !important;
  stroke: #ffd700 !important;
  stroke-width: 1px !important;
  cursor: pointer !important;
  z-index: 20 !important;
}