/* Coral Reef - Where Colors Dream */
/* CSS Techniques: clip-path, keyframe animations, CSS transforms, gradients, pseudo-elements */

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

:root {
  --ocean-deep: #0a1628;
  --ocean-mid: #0d3b66;
  --ocean-light: #1a6b8a;
  --surface-glow: #3da5d9;
  --coral-pink: #ff6b9d;
  --coral-orange: #ff8c42;
  --coral-purple: #9d4edd;
  --coral-red: #e63946;
  --coral-yellow: #ffd166;
  --seaweed-green: #2d6a4f;
  --seaweed-light: #40916c;
  --fish-gold: #fca311;
  --fish-blue: #00b4d8;
  --fish-teal: #48cae4;
  --jelly-pink: rgba(255, 182, 193, 0.6);
  --jelly-blue: rgba(173, 216, 230, 0.5);
  --sand: #c9b89d;
  --text-light: rgba(255, 255, 255, 0.9);
  --text-muted: rgba(255, 255, 255, 0.7);
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  font-family: 'Georgia', serif;
  color: var(--text-light);
}

/* Ocean Container */
.ocean {
  position: relative;
  min-height: 100vh;
  background: linear-gradient(
    180deg,
    var(--surface-glow) 0%,
    var(--ocean-light) 15%,
    var(--ocean-mid) 40%,
    var(--ocean-deep) 100%
  );
  overflow: hidden;
}

/* Light Rays from Surface */
.light-rays {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: hidden;
}

.ray {
  position: absolute;
  top: -10%;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.3) 0%,
    rgba(255, 255, 255, 0.1) 30%,
    transparent 100%
  );
  transform-origin: top center;
  animation: ray-sway 8s ease-in-out infinite;
}

.ray-1 {
  left: 10%;
  width: 80px;
  height: 120vh;
  transform: rotate(-15deg);
  animation-delay: 0s;
}

.ray-2 {
  left: 30%;
  width: 120px;
  height: 100vh;
  transform: rotate(-5deg);
  animation-delay: -2s;
}

.ray-3 {
  left: 50%;
  width: 100px;
  height: 130vh;
  transform: rotate(5deg);
  animation-delay: -4s;
}

.ray-4 {
  left: 70%;
  width: 90px;
  height: 110vh;
  transform: rotate(10deg);
  animation-delay: -1s;
}

.ray-5 {
  left: 85%;
  width: 70px;
  height: 90vh;
  transform: rotate(20deg);
  animation-delay: -3s;
}

@keyframes ray-sway {
  0%, 100% { transform: rotate(var(--start-rotation, -15deg)) skewX(0deg); opacity: 0.6; }
  50% { transform: rotate(calc(var(--start-rotation, -15deg) + 5deg)) skewX(2deg); opacity: 0.8; }
}

.ray-1 { --start-rotation: -15deg; }
.ray-2 { --start-rotation: -5deg; }
.ray-3 { --start-rotation: 5deg; }
.ray-4 { --start-rotation: 10deg; }
.ray-5 { --start-rotation: 20deg; }

/* Bubbles */
.bubbles {
  position: absolute;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.bubble {
  position: absolute;
  bottom: -50px;
  background: radial-gradient(
    circle at 30% 30%,
    rgba(255, 255, 255, 0.8) 0%,
    rgba(255, 255, 255, 0.4) 30%,
    rgba(255, 255, 255, 0.1) 100%
  );
  border-radius: 50%;
  animation: bubble-rise linear infinite;
}

.bubble::after {
  content: '';
  position: absolute;
  top: 20%;
  left: 20%;
  width: 30%;
  height: 30%;
  background: rgba(255, 255, 255, 0.6);
  border-radius: 50%;
}

.bubble-1 { left: 5%; width: 15px; height: 15px; animation-duration: 12s; animation-delay: 0s; }
.bubble-2 { left: 15%; width: 10px; height: 10px; animation-duration: 10s; animation-delay: -2s; }
.bubble-3 { left: 25%; width: 20px; height: 20px; animation-duration: 14s; animation-delay: -4s; }
.bubble-4 { left: 35%; width: 8px; height: 8px; animation-duration: 9s; animation-delay: -1s; }
.bubble-5 { left: 50%; width: 12px; height: 12px; animation-duration: 11s; animation-delay: -3s; }
.bubble-6 { left: 60%; width: 18px; height: 18px; animation-duration: 13s; animation-delay: -5s; }
.bubble-7 { left: 72%; width: 10px; height: 10px; animation-duration: 10s; animation-delay: -7s; }
.bubble-8 { left: 80%; width: 14px; height: 14px; animation-duration: 12s; animation-delay: -2s; }
.bubble-9 { left: 88%; width: 8px; height: 8px; animation-duration: 9s; animation-delay: -6s; }
.bubble-10 { left: 95%; width: 16px; height: 16px; animation-duration: 15s; animation-delay: -4s; }

@keyframes bubble-rise {
  0% {
    transform: translateY(0) translateX(0) scale(1);
    opacity: 0.8;
  }
  25% {
    transform: translateY(-25vh) translateX(10px) scale(1.05);
  }
  50% {
    transform: translateY(-50vh) translateX(-5px) scale(1.1);
    opacity: 0.6;
  }
  75% {
    transform: translateY(-75vh) translateX(8px) scale(1.05);
  }
  100% {
    transform: translateY(-110vh) translateX(0) scale(1);
    opacity: 0;
  }
}

/* Header & Content */
.header {
  position: relative;
  z-index: 10;
  text-align: center;
  padding: 3rem 1rem 2rem;
}

.title {
  font-size: clamp(2rem, 8vw, 4rem);
  font-weight: 400;
  letter-spacing: 0.1em;
  text-shadow:
    0 0 20px rgba(61, 165, 217, 0.5),
    0 0 40px rgba(61, 165, 217, 0.3);
  animation: title-float 6s ease-in-out infinite;
}

.subtitle {
  font-size: clamp(0.9rem, 3vw, 1.2rem);
  font-style: italic;
  color: var(--text-muted);
  margin-top: 0.5rem;
  letter-spacing: 0.05em;
}

@keyframes title-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.content {
  position: relative;
  z-index: 10;
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1.5rem 12rem;
}

.poem {
  background: rgba(10, 22, 40, 0.4);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: 2rem;
  margin-bottom: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.poem p {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  line-height: 2;
  margin-bottom: 1.5rem;
  text-align: center;
}

.poem p:last-child {
  margin-bottom: 0;
}

.wisdom {
  background: rgba(157, 78, 221, 0.15);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: 2rem;
  border: 1px solid rgba(157, 78, 221, 0.3);
}

.wisdom blockquote {
  font-size: clamp(1.1rem, 3vw, 1.4rem);
  font-style: italic;
  text-align: center;
  margin-bottom: 1rem;
  color: var(--text-light);
}

.wisdom blockquote::before,
.wisdom blockquote::after {
  content: '"';
  color: var(--coral-purple);
}

.wisdom .fact {
  font-size: 0.95rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.6;
}

/* Fish */
.fish {
  position: absolute;
  z-index: 5;
}

.fish-body {
  position: relative;
  width: 60px;
  height: 30px;
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  animation: fish-wiggle 0.5s ease-in-out infinite;
}

.fish-1 .fish-body { background: linear-gradient(135deg, var(--fish-gold) 0%, #e85d04 100%); }
.fish-2 .fish-body { background: linear-gradient(135deg, var(--fish-blue) 0%, #0077b6 100%); }
.fish-3 .fish-body { background: linear-gradient(135deg, var(--fish-teal) 0%, #00b4d8 100%); }

.fish-eye {
  position: absolute;
  top: 8px;
  left: 10px;
  width: 10px;
  height: 10px;
  background: white;
  border-radius: 50%;
}

.fish-eye::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 3px;
  width: 5px;
  height: 5px;
  background: #1a1a2e;
  border-radius: 50%;
}

.fish-tail {
  position: absolute;
  right: -15px;
  top: 5px;
  width: 0;
  height: 0;
  border-top: 12px solid transparent;
  border-bottom: 12px solid transparent;
  animation: tail-wag 0.3s ease-in-out infinite;
}

.fish-1 .fish-tail { border-left: 20px solid #e85d04; }
.fish-2 .fish-tail { border-left: 20px solid #0077b6; }
.fish-3 .fish-tail { border-left: 20px solid #00b4d8; }

.fish-fin {
  position: absolute;
  top: -8px;
  left: 20px;
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
}

.fish-1 .fish-fin { border-bottom: 15px solid var(--fish-gold); }
.fish-2 .fish-fin { border-bottom: 15px solid var(--fish-blue); }
.fish-3 .fish-fin { border-bottom: 15px solid var(--fish-teal); }

.fish-1 {
  top: 30%;
  animation: swim-right 18s linear infinite;
}

.fish-2 {
  top: 45%;
  animation: swim-left 22s linear infinite;
  transform: scaleX(-1);
}

.fish-3 {
  top: 55%;
  animation: swim-right 15s linear infinite;
  animation-delay: -5s;
}

@keyframes fish-wiggle {
  0%, 100% { transform: rotate(-2deg); }
  50% { transform: rotate(2deg); }
}

@keyframes tail-wag {
  0%, 100% { transform: rotate(-10deg); }
  50% { transform: rotate(10deg); }
}

@keyframes swim-right {
  0% { left: -100px; transform: translateY(0); }
  25% { transform: translateY(-20px); }
  50% { transform: translateY(10px); }
  75% { transform: translateY(-15px); }
  100% { left: 110%; transform: translateY(0); }
}

@keyframes swim-left {
  0% { right: -100px; transform: translateY(0) scaleX(-1); }
  25% { transform: translateY(15px) scaleX(-1); }
  50% { transform: translateY(-10px) scaleX(-1); }
  75% { transform: translateY(20px) scaleX(-1); }
  100% { right: 110%; transform: translateY(0) scaleX(-1); }
}

/* Jellyfish */
.jellyfish {
  position: absolute;
  z-index: 4;
}

.jelly-body {
  width: 80px;
  height: 50px;
  background: radial-gradient(
    ellipse at center,
    var(--jelly-pink) 0%,
    rgba(255, 105, 180, 0.3) 70%,
    transparent 100%
  );
  border-radius: 50% 50% 40% 40% / 60% 60% 40% 40%;
  animation: jelly-pulse 2s ease-in-out infinite;
  box-shadow:
    0 0 20px rgba(255, 182, 193, 0.5),
    inset 0 -10px 20px rgba(255, 255, 255, 0.2);
}

.jellyfish-2 .jelly-body {
  width: 60px;
  height: 40px;
  background: radial-gradient(
    ellipse at center,
    var(--jelly-blue) 0%,
    rgba(100, 200, 255, 0.3) 70%,
    transparent 100%
  );
  box-shadow:
    0 0 20px rgba(173, 216, 230, 0.5),
    inset 0 -10px 20px rgba(255, 255, 255, 0.2);
}

.tentacles {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: -5px;
}

.jellyfish-2 .tentacles {
  gap: 6px;
}

.tentacle {
  width: 3px;
  height: 60px;
  background: linear-gradient(
    180deg,
    rgba(255, 182, 193, 0.6) 0%,
    rgba(255, 182, 193, 0.2) 100%
  );
  border-radius: 0 0 3px 3px;
  animation: tentacle-wave 2s ease-in-out infinite;
  transform-origin: top center;
}

.jellyfish-2 .tentacle {
  height: 45px;
  background: linear-gradient(
    180deg,
    rgba(173, 216, 230, 0.6) 0%,
    rgba(173, 216, 230, 0.2) 100%
  );
}

.tentacle:nth-child(1) { animation-delay: 0s; height: 50px; }
.tentacle:nth-child(2) { animation-delay: 0.1s; height: 65px; }
.tentacle:nth-child(3) { animation-delay: 0.2s; height: 70px; }
.tentacle:nth-child(4) { animation-delay: 0.1s; height: 65px; }
.tentacle:nth-child(5) { animation-delay: 0s; height: 50px; }

.jellyfish-2 .tentacle:nth-child(1) { height: 35px; }
.jellyfish-2 .tentacle:nth-child(2) { height: 48px; }
.jellyfish-2 .tentacle:nth-child(3) { height: 52px; }
.jellyfish-2 .tentacle:nth-child(4) { height: 48px; }
.jellyfish-2 .tentacle:nth-child(5) { height: 35px; }

@keyframes jelly-pulse {
  0%, 100% {
    transform: scaleX(1) scaleY(1);
  }
  50% {
    transform: scaleX(1.1) scaleY(0.9);
  }
}

@keyframes tentacle-wave {
  0%, 100% { transform: rotate(-5deg) translateX(-3px); }
  50% { transform: rotate(5deg) translateX(3px); }
}

.jellyfish-1 {
  top: 20%;
  left: 15%;
  animation: jelly-float-1 20s ease-in-out infinite;
}

.jellyfish-2 {
  top: 35%;
  right: 20%;
  animation: jelly-float-2 25s ease-in-out infinite;
}

@keyframes jelly-float-1 {
  0%, 100% { transform: translate(0, 0); }
  25% { transform: translate(30px, -40px); }
  50% { transform: translate(60px, 20px); }
  75% { transform: translate(20px, -20px); }
}

@keyframes jelly-float-2 {
  0%, 100% { transform: translate(0, 0); }
  25% { transform: translate(-40px, 30px); }
  50% { transform: translate(-20px, -50px); }
  75% { transform: translate(-60px, 10px); }
}

/* Coral Bed */
.coral-bed {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 250px;
  z-index: 3;
}

.coral {
  position: absolute;
  bottom: 40px;
}

/* Brain coral */
.coral-1 {
  left: 5%;
  width: 80px;
  height: 60px;
  background: radial-gradient(circle at 30% 30%, var(--coral-pink) 0%, #d63384 100%);
  border-radius: 50% 50% 45% 45%;
  box-shadow:
    inset -5px -5px 15px rgba(0,0,0,0.3),
    inset 5px 5px 15px rgba(255,255,255,0.2);
}

.coral-1::before {
  content: '';
  position: absolute;
  top: 10px;
  left: 10px;
  right: 10px;
  bottom: 15px;
  background: repeating-radial-gradient(
    circle at center,
    transparent 0px,
    transparent 4px,
    rgba(255,255,255,0.2) 4px,
    rgba(255,255,255,0.2) 6px
  );
  border-radius: inherit;
}

/* Branching coral */
.coral-2 {
  left: 20%;
  width: 60px;
  height: 100px;
  background: var(--coral-orange);
  clip-path: polygon(
    40% 100%, 45% 70%, 30% 70%, 35% 50%, 20% 50%,
    25% 35%, 10% 35%, 30% 10%, 45% 30%, 50% 0%,
    55% 30%, 70% 10%, 90% 35%, 75% 35%, 80% 50%,
    65% 50%, 70% 70%, 55% 70%, 60% 100%
  );
  animation: coral-sway 4s ease-in-out infinite;
}

/* Fan coral */
.coral-3 {
  left: 35%;
  width: 90px;
  height: 120px;
  background: linear-gradient(0deg, var(--coral-purple) 0%, #c77dff 100%);
  clip-path: polygon(
    50% 100%, 45% 90%, 20% 85%, 10% 60%, 5% 30%,
    15% 10%, 35% 0%, 50% 5%, 65% 0%, 85% 10%,
    95% 30%, 90% 60%, 80% 85%, 55% 90%
  );
  animation: coral-sway 5s ease-in-out infinite;
  animation-delay: -1s;
}

.coral-3::before {
  content: '';
  position: absolute;
  inset: 5px;
  background: repeating-linear-gradient(
    90deg,
    transparent 0px,
    transparent 3px,
    rgba(0,0,0,0.15) 3px,
    rgba(0,0,0,0.15) 4px
  );
  clip-path: inherit;
}

/* Tube coral */
.coral-4 {
  left: 55%;
  width: 50px;
  height: 80px;
}

.coral-4::before,
.coral-4::after {
  content: '';
  position: absolute;
  bottom: 0;
  background: var(--coral-yellow);
  border-radius: 50% 50% 0 0;
}

.coral-4::before {
  left: 0;
  width: 20px;
  height: 60px;
}

.coral-4::after {
  left: 15px;
  width: 25px;
  height: 80px;
}

/* Mushroom coral */
.coral-5 {
  left: 70%;
  width: 70px;
  height: 50px;
  background: radial-gradient(ellipse at bottom, var(--coral-red) 0%, #9d0208 100%);
  border-radius: 100% 100% 30% 30% / 100% 100% 20% 20%;
}

.coral-5::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 15px;
  height: 25px;
  background: #7f0d0d;
  border-radius: 0 0 5px 5px;
}

/* Small accent corals */
.coral-6 {
  left: 82%;
  width: 40px;
  height: 55px;
  background: linear-gradient(0deg, var(--coral-pink) 0%, #ff85a1 100%);
  clip-path: polygon(
    30% 100%, 35% 60%, 15% 55%, 25% 30%, 40% 35%, 50% 0%,
    60% 35%, 75% 30%, 85% 55%, 65% 60%, 70% 100%
  );
  animation: coral-sway 3.5s ease-in-out infinite;
}

.coral-7 {
  left: 12%;
  width: 35px;
  height: 45px;
  background: var(--coral-orange);
  border-radius: 40% 40% 50% 50%;
  bottom: 35px;
}

.coral-8 {
  left: 92%;
  width: 50px;
  height: 40px;
  background: radial-gradient(circle at 40% 40%, #7b2cbf 0%, var(--coral-purple) 100%);
  border-radius: 50%;
  bottom: 45px;
}

@keyframes coral-sway {
  0%, 100% { transform: rotate(-2deg); }
  50% { transform: rotate(2deg); }
}

/* Seaweed */
.seaweed {
  position: absolute;
  bottom: 40px;
  width: 20px;
  background: linear-gradient(0deg, var(--seaweed-green) 0%, var(--seaweed-light) 100%);
  border-radius: 20px 20px 5px 5px;
  transform-origin: bottom center;
  animation: seaweed-sway 3s ease-in-out infinite;
}

.seaweed-1 {
  left: 28%;
  height: 120px;
  animation-delay: 0s;
}

.seaweed-2 {
  left: 48%;
  height: 90px;
  animation-delay: -0.5s;
}

.seaweed-3 {
  left: 65%;
  height: 140px;
  animation-delay: -1s;
}

.seaweed-4 {
  left: 88%;
  height: 100px;
  animation-delay: -1.5s;
}

@keyframes seaweed-sway {
  0%, 100% { transform: rotate(-8deg) skewX(-3deg); }
  50% { transform: rotate(8deg) skewX(3deg); }
}

/* Sea Floor */
.sea-floor {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 50px;
  background: linear-gradient(
    0deg,
    var(--sand) 0%,
    #b8a88a 60%,
    var(--ocean-deep) 100%
  );
  z-index: 2;
}

.sea-floor::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 20px;
  background: repeating-linear-gradient(
    90deg,
    transparent 0px,
    transparent 40px,
    rgba(255,255,255,0.1) 40px,
    rgba(255,255,255,0.1) 42px
  );
}

/* Responsive Design */
@media (max-width: 768px) {
  .coral-bed {
    height: 180px;
  }

  .coral {
    transform: scale(0.7);
    transform-origin: bottom center;
  }

  .coral-1 { left: 2%; }
  .coral-2 { left: 15%; }
  .coral-3 { left: 30%; }
  .coral-4 { left: 50%; }
  .coral-5 { left: 65%; }
  .coral-6 { left: 80%; }
  .coral-8 { left: 90%; }

  .seaweed {
    transform: scale(0.8);
  }

  .jellyfish {
    transform: scale(0.8);
  }

  .fish .fish-body {
    width: 45px;
    height: 22px;
  }

  .content {
    padding-bottom: 10rem;
  }

  .poem, .wisdom {
    padding: 1.5rem;
  }
}

@media (max-width: 480px) {
  .header {
    padding: 2rem 1rem 1rem;
  }

  .content {
    padding: 1rem;
    padding-bottom: 8rem;
  }

  .coral-bed {
    height: 150px;
  }

  .coral {
    transform: scale(0.5);
  }

  .jellyfish-1 {
    left: 5%;
    top: 15%;
  }

  .jellyfish-2 {
    right: 5%;
    top: 25%;
  }

  .ray {
    opacity: 0.4;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .ray,
  .bubble,
  .fish,
  .fish-body,
  .fish-tail,
  .jellyfish,
  .jelly-body,
  .tentacle,
  .coral-2,
  .coral-3,
  .coral-6,
  .seaweed,
  .title {
    animation: none;
  }

  .fish-1 { left: 20%; }
  .fish-2 { right: 20%; }
  .fish-3 { left: 60%; }
}