/* CSS Zen Garden: Floating Islands of Aerethia
   Showcases: 3D Transforms, Parallax Scrolling, Floating Animations */

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

:root {
  --sky-top: #0a1628;
  --sky-mid: #1a3a5c;
  --sky-bottom: #4a7c9b;
  --cloud-color: rgba(255, 255, 255, 0.3);
  --island-top: #4a7c59;
  --island-grass: #5d9b6b;
  --island-rock: #8b7355;
  --island-bottom: #5c4a3a;
  --island-shadow: rgba(0, 0, 0, 0.3);
  --text-light: #f0f4f8;
  --text-shadow: rgba(0, 0, 0, 0.5);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  overflow-x: hidden;
  min-height: 300vh;
  background: linear-gradient(180deg, var(--sky-top) 0%, var(--sky-mid) 40%, var(--sky-bottom) 100%);
}

/* Main sky container with perspective */
.sky {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  perspective: 1000px;
  perspective-origin: 50% 50%;
  overflow: hidden;
  transform-style: preserve-3d;
}

/* Clouds */
.cloud {
  position: absolute;
  background: var(--cloud-color);
  border-radius: 50%;
  filter: blur(20px);
  animation: cloud-drift linear infinite;
}

.cloud-1 {
  width: 300px;
  height: 80px;
  top: 10%;
  left: -300px;
  animation-duration: 60s;
}

.cloud-2 {
  width: 200px;
  height: 60px;
  top: 25%;
  left: -200px;
  animation-duration: 45s;
  animation-delay: -20s;
}

.cloud-3 {
  width: 400px;
  height: 100px;
  top: 40%;
  left: -400px;
  animation-duration: 80s;
  animation-delay: -40s;
}

.cloud-4 {
  width: 250px;
  height: 70px;
  top: 60%;
  left: -250px;
  animation-duration: 55s;
  animation-delay: -10s;
}

.cloud-5 {
  width: 350px;
  height: 90px;
  top: 75%;
  left: -350px;
  animation-duration: 70s;
  animation-delay: -30s;
}

@keyframes cloud-drift {
  from { transform: translateX(0); }
  to { transform: translateX(calc(100vw + 400px)); }
}

/* Parallax container */
.parallax-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
}

/* Parallax layers at different Z depths */
.parallax-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
}

.layer-far {
  transform: translateZ(-400px) scale(1.4);
  opacity: 0.5;
}

.layer-mid {
  transform: translateZ(-200px) scale(1.2);
  opacity: 0.75;
}

.layer-near {
  transform: translateZ(0px) scale(1);
}

.layer-closest {
  transform: translateZ(100px) scale(0.9);
  pointer-events: none;
}

/* Base island styles */
.island {
  position: absolute;
  transform-style: preserve-3d;
  animation: float ease-in-out infinite;
}

.island-body {
  position: absolute;
  background: linear-gradient(180deg, var(--island-grass) 0%, var(--island-top) 30%, var(--island-rock) 100%);
  border-radius: 50% 50% 45% 45% / 30% 30% 70% 70%;
  box-shadow:
    0 20px 40px var(--island-shadow),
    inset 0 -10px 30px rgba(0, 0, 0, 0.2);
}

.island-bottom {
  position: absolute;
  background: linear-gradient(180deg, var(--island-rock) 0%, var(--island-bottom) 60%, #3a2a1a 100%);
  clip-path: polygon(10% 0%, 90% 0%, 70% 100%, 30% 100%);
}

.island-grass {
  position: absolute;
  top: -5px;
  left: 10%;
  width: 80%;
  height: 15px;
  background: var(--island-grass);
  border-radius: 50%;
  filter: blur(2px);
}

/* Individual island positioning and sizes */
.island-1 {
  top: 20%;
  left: 10%;
  animation-duration: 8s;
  animation-delay: -2s;
}

.island-1 .island-body {
  width: 120px;
  height: 60px;
}

.island-1 .island-bottom {
  top: 55px;
  left: 15px;
  width: 90px;
  height: 80px;
}

.island-2 {
  top: 35%;
  right: 15%;
  animation-duration: 10s;
  animation-delay: -5s;
}

.island-2 .island-body {
  width: 80px;
  height: 40px;
}

.island-2 .island-bottom {
  top: 35px;
  left: 10px;
  width: 60px;
  height: 50px;
}

.island-3 {
  top: 25%;
  left: 5%;
  animation-duration: 7s;
  animation-delay: -1s;
}

.island-3 .island-body {
  width: 200px;
  height: 90px;
}

.island-3 .island-bottom {
  top: 80px;
  left: 30px;
  width: 140px;
  height: 120px;
}

.island-4 {
  top: 50%;
  right: 10%;
  animation-duration: 9s;
  animation-delay: -4s;
}

.island-4 .island-body {
  width: 150px;
  height: 70px;
}

.island-4 .island-bottom {
  top: 65px;
  left: 20px;
  width: 110px;
  height: 90px;
}

.island-main {
  top: 35%;
  left: 50%;
  transform: translateX(-50%);
  animation-duration: 6s;
}

.island-main .island-body {
  width: 350px;
  height: 150px;
  transform: rotateX(10deg);
}

.island-main .island-bottom {
  top: 140px;
  left: 50px;
  width: 250px;
  height: 180px;
}

.island-5 {
  top: 60%;
  left: 15%;
  animation-duration: 8s;
  animation-delay: -3s;
}

.island-5 .island-body {
  width: 140px;
  height: 65px;
}

.island-5 .island-bottom {
  top: 60px;
  left: 20px;
  width: 100px;
  height: 100px;
}

/* Floating animation */
@keyframes float {
  0%, 100% {
    transform: translateY(0) rotateX(5deg) rotateY(0deg);
  }
  25% {
    transform: translateY(-15px) rotateX(7deg) rotateY(2deg);
  }
  50% {
    transform: translateY(-8px) rotateX(3deg) rotateY(-1deg);
  }
  75% {
    transform: translateY(-20px) rotateX(6deg) rotateY(-2deg);
  }
}

.island-main {
  animation-name: float-main;
}

@keyframes float-main {
  0%, 100% {
    transform: translateX(-50%) translateY(0) rotateX(8deg) rotateY(0deg);
  }
  50% {
    transform: translateX(-50%) translateY(-25px) rotateX(5deg) rotateY(3deg);
  }
}

/* Structures */
.castle {
  position: absolute;
  top: -60px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 5px;
  align-items: flex-end;
}

.tower {
  width: 20px;
  height: 40px;
  background: linear-gradient(180deg, #8e7cc3 0%, #674ea7 100%);
  position: relative;
}

.tower::before {
  content: '';
  position: absolute;
  top: -15px;
  left: -5px;
  width: 0;
  height: 0;
  border-left: 15px solid transparent;
  border-right: 15px solid transparent;
  border-bottom: 20px solid #5b3f8f;
}

.tower-main {
  width: 30px;
  height: 60px;
}

.tower-main::before {
  left: -7px;
  border-left: 22px solid transparent;
  border-right: 22px solid transparent;
  border-bottom: 25px solid #5b3f8f;
}

.village {
  position: absolute;
  top: -40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 15px;
  align-items: flex-end;
}

.house {
  width: 30px;
  height: 25px;
  background: linear-gradient(180deg, #d4a373 0%, #bc8a5f 100%);
  position: relative;
}

.house::before {
  content: '';
  position: absolute;
  top: -18px;
  left: -5px;
  width: 0;
  height: 0;
  border-left: 20px solid transparent;
  border-right: 20px solid transparent;
  border-bottom: 20px solid #a0522d;
}

.house-tall {
  width: 35px;
  height: 35px;
}

.house-tall::before {
  left: -7px;
  border-left: 25px solid transparent;
  border-right: 25px solid transparent;
}

/* Lighthouse */
.lighthouse {
  position: absolute;
  top: -80px;
  left: 50%;
  transform: translateX(-50%);
}

.lighthouse-body {
  width: 25px;
  height: 60px;
  background: linear-gradient(90deg, #fff 0%, #fff 50%, #e63946 50%, #e63946 100%);
  background-size: 10px 100%;
  clip-path: polygon(15% 100%, 85% 100%, 70% 0%, 30% 0%);
}

.lighthouse-top {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 15px;
  background: #333;
  border-radius: 5px 5px 0 0;
}

.lighthouse-light {
  position: absolute;
  top: -25px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 40px;
  background: radial-gradient(circle, rgba(255, 230, 150, 0.8) 0%, transparent 70%);
  border-radius: 50%;
  animation: lighthouse-glow 2s ease-in-out infinite;
}

@keyframes lighthouse-glow {
  0%, 100% { opacity: 0.5; transform: translateX(-50%) scale(1); }
  50% { opacity: 1; transform: translateX(-50%) scale(1.3); }
}

/* Trees */
.trees {
  position: absolute;
  top: -30px;
  left: 20%;
  display: flex;
  gap: 10px;
}

.tree {
  width: 0;
  height: 0;
  border-left: 12px solid transparent;
  border-right: 12px solid transparent;
  border-bottom: 35px solid #2d5a27;
  position: relative;
}

.tree::before {
  content: '';
  position: absolute;
  bottom: -40px;
  left: -4px;
  width: 8px;
  height: 12px;
  background: #5c4033;
}

.tree-large {
  border-left: 18px solid transparent;
  border-right: 18px solid transparent;
  border-bottom: 50px solid #1e4d2b;
}

.tree-large::before {
  bottom: -55px;
  left: -5px;
  width: 10px;
  height: 15px;
}

/* Waterfall */
.waterfall {
  position: absolute;
  top: 70px;
  right: 30px;
  width: 15px;
  height: 120px;
  background: linear-gradient(180deg,
    rgba(150, 200, 255, 0.9) 0%,
    rgba(150, 200, 255, 0.6) 50%,
    rgba(150, 200, 255, 0.3) 100%);
  border-radius: 5px;
  animation: waterfall-flow 0.5s linear infinite;
}

.waterfall::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: -10px;
  width: 35px;
  height: 20px;
  background: radial-gradient(ellipse, rgba(150, 200, 255, 0.5) 0%, transparent 70%);
  border-radius: 50%;
  animation: splash 1s ease-in-out infinite;
}

@keyframes waterfall-flow {
  0% { background-position: 0 0; }
  100% { background-position: 0 20px; }
}

@keyframes splash {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.2); opacity: 0.8; }
}

/* Floating rocks */
.floating-rock {
  position: absolute;
  background: linear-gradient(135deg, #6b5344 0%, #4a3a2e 100%);
  border-radius: 30% 70% 50% 50%;
  animation: rock-float ease-in-out infinite;
}

.rock-1 {
  width: 40px;
  height: 30px;
  top: 70%;
  left: 5%;
  animation-duration: 5s;
}

.rock-2 {
  width: 25px;
  height: 20px;
  top: 20%;
  right: 8%;
  animation-duration: 4s;
  animation-delay: -2s;
}

.rock-3 {
  width: 35px;
  height: 25px;
  top: 85%;
  right: 20%;
  animation-duration: 6s;
  animation-delay: -1s;
}

@keyframes rock-float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-30px) rotate(10deg); }
}

/* Birds */
.bird {
  position: absolute;
  width: 20px;
  height: 5px;
  background: transparent;
}

.bird::before,
.bird::after {
  content: '';
  position: absolute;
  width: 10px;
  height: 3px;
  background: #1a1a2e;
  border-radius: 50%;
}

.bird::before {
  left: 0;
  transform-origin: right center;
  animation: wing-flap 0.4s ease-in-out infinite;
}

.bird::after {
  right: 0;
  transform-origin: left center;
  animation: wing-flap 0.4s ease-in-out infinite reverse;
}

.bird-1 {
  top: 15%;
  left: 20%;
  animation: bird-fly 15s linear infinite;
}

.bird-2 {
  top: 30%;
  left: -5%;
  animation: bird-fly 20s linear infinite;
  animation-delay: -8s;
}

.bird-3 {
  top: 45%;
  left: 10%;
  animation: bird-fly 18s linear infinite;
  animation-delay: -4s;
}

@keyframes wing-flap {
  0%, 100% { transform: rotate(-20deg); }
  50% { transform: rotate(20deg); }
}

@keyframes bird-fly {
  from { transform: translateX(0); }
  to { transform: translateX(120vw); }
}

/* Island content / text */
.island-content {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: var(--text-light);
  text-shadow: 2px 2px 4px var(--text-shadow);
  width: max-content;
  max-width: 280px;
}

.main-content {
  top: 30px;
  max-width: 320px;
}

.island-content h1 {
  font-size: 1.8rem;
  font-weight: 300;
  letter-spacing: 3px;
  margin-bottom: 15px;
  text-transform: uppercase;
}

.island-content h2 {
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: 2px;
  margin-bottom: 10px;
}

.island-content h3 {
  font-size: 0.95rem;
  font-weight: 400;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.island-content p {
  font-size: 0.85rem;
  line-height: 1.6;
  opacity: 0.9;
  margin-bottom: 8px;
}

/* Scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-light);
  text-align: center;
  opacity: 0.7;
  animation: hint-pulse 2s ease-in-out infinite;
}

.scroll-hint span {
  font-size: 0.8rem;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  margin: 10px auto 0;
  border-right: 2px solid var(--text-light);
  border-bottom: 2px solid var(--text-light);
  transform: rotate(45deg);
  animation: arrow-bounce 1.5s ease-in-out infinite;
}

@keyframes hint-pulse {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; }
}

@keyframes arrow-bounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50% { transform: rotate(45deg) translateY(5px); }
}

/* Responsive design */
@media (max-width: 768px) {
  .island-main .island-body {
    width: 250px;
    height: 110px;
  }

  .island-main .island-bottom {
    top: 100px;
    left: 30px;
    width: 190px;
    height: 140px;
  }

  .island-content h1 {
    font-size: 1.4rem;
  }

  .main-content {
    max-width: 230px;
  }

  .island-content p {
    font-size: 0.75rem;
  }

  .island-3,
  .island-4 {
    display: none;
  }

  .village {
    gap: 8px;
  }

  .house {
    width: 22px;
    height: 18px;
  }

  .house::before {
    top: -14px;
    left: -4px;
    border-left: 15px solid transparent;
    border-right: 15px solid transparent;
    border-bottom: 15px solid #a0522d;
  }

  .house-tall {
    width: 26px;
    height: 26px;
  }
}

@media (max-width: 480px) {
  .island-main .island-body {
    width: 180px;
    height: 80px;
  }

  .island-main .island-bottom {
    top: 70px;
    left: 20px;
    width: 140px;
    height: 100px;
  }

  .island-content h1 {
    font-size: 1.1rem;
    letter-spacing: 2px;
  }

  .main-content {
    max-width: 170px;
  }

  .island-content p {
    font-size: 0.7rem;
    line-height: 1.4;
  }

  .island-5 .island-content {
    display: none;
  }

  .layer-far {
    opacity: 0.3;
  }

  .cloud {
    filter: blur(15px);
    opacity: 0.5;
  }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  .island,
  .cloud,
  .floating-rock,
  .bird,
  .lighthouse-light,
  .waterfall,
  .scroll-arrow,
  .scroll-hint {
    animation: none;
  }

  .bird::before,
  .bird::after {
    animation: none;
  }
}