/* Modern CSS Reset */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Base Variables */
:root {
  /* Day Theme Colors */
  --day-sky-start: #87CEEB;
  --day-sky-end: #1E90FF;
  --day-sun: #FFD700;
  --day-ocean: #1E90FF;
  --day-boat: #8B4513;
  --day-sail: #F5F5F5;
  --day-text: #333;
  
  /* Night Theme Colors */
  --night-sky-start: #0F2027;
  --night-sky-end: #203A43;
  --night-moon: #F0F0F0;
  --night-ocean: #0A1128;
  --night-boat: #5D4037;
  --night-sail: #E0E0E0;
  --night-text: #F5F5F5;
  
  /* Common */
  --transition-time: 1.5s;
  --easing: cubic-bezier(0.4, 0, 0.2, 1);
}


/* Base Styles */
html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  transition: background-color var(--transition-time) var(--easing);
}

/* Theme Toggle Switch */
.theme-toggle-container {
  position: fixed;
  top: 2rem;
  right: 2rem;
  z-index: 1000;
}

.theme-toggle {
  display: none;
}

.theme-toggle-label {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 80px;
  height: 40px;
  padding: 0 12px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: 50px;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.theme-toggle-icons {
  display: flex;
  justify-content: space-between;
  width: 100%;
  color: var(--day-text);
  font-size: 1.2rem;
  transition: all 0.3s ease;
}

.theme-toggle-ball {
  position: absolute;
  top: 4px;
  left: 4px;
  width: 32px;
  height: 32px;
  background: var(--day-sun);
  border-radius: 50%;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s var(--easing), background 0.3s ease;
}

.theme-toggle:checked + .theme-toggle-label .theme-toggle-ball {
  transform: translateX(40px);
  background: var(--night-moon);
}

.theme-toggle:checked + .theme-toggle-label .theme-toggle-icons {
  color: var(--night-text);
}

/* Scene Container */
.scene {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

/* Sky */
.sky {
  position: relative;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, var(--day-sky-start), var(--day-sky-end));
  transition: background 1.5s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: background;
}

/* Celestial Body (Sun/Moon) */
.celestial-body {
  position: absolute;
  top: 25%;
  left: 20%;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: var(--day-sun);
  transform: translate(-50%, -50%);
  box-shadow: 0 0 50px 20px rgba(255, 215, 0, 0.6);
  transition: all 1.5s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 5;
  will-change: transform, box-shadow, background;
}

.celestial-glow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.8), transparent 60%);
  filter: blur(5px);
  opacity: 0.8;
  transition: all 1.5s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: opacity, background;
}

.celestial-craters {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  overflow: hidden;
}

.crater {
  position: absolute;
  background: rgba(200, 200, 200, 0.2);
  border-radius: 50%;
  transition: all var(--transition-time) var(--easing);
}

/* Night Mode Styles */
.theme-night .sky {
  background: linear-gradient(to bottom, var(--night-sky-start), var(--night-sky-end));
}

.theme-night .celestial-body {
  background: var(--night-moon);
  box-shadow: 0 0 30px 10px rgba(240, 240, 240, 0.3);
}

.theme-night .celestial-glow {
  opacity: 0.3;
}

/* Waves */
.waves {
  position: absolute;
  width: 100%;
  height: 120px;
  bottom: 0;
  left: 0;
  overflow: hidden;
  z-index: 1;
}

.wave {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 200%;
  height: 100%;
  background: url('data:image/svg+xml;utf8,<svg viewBox="0 0 1440 120" xmlns="http://www.w3.org/2000/svg"><path d="M0,60 C160,120 320,0 480,60 C640,120 800,0 960,60 C1120,120 1280,0 1440,60 L1440,120 L0,120 Z" fill="rgba(0, 119, 190, 0.7)"/></svg>') repeat-x;
  background-size: 50% 100%;
  animation: wave 15s linear infinite;
  transform: translate3d(0, 0, 0);
  backface-visibility: hidden;
  perspective: 1000px;
  will-change: transform, background;
  transition: all 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.wave-1 { top: 0; animation-duration: 20s; animation-delay: 0s; }
.wave-2 { top: 15px; animation-duration: 15s; animation-delay: -5s; opacity: 0.7; }
.wave-3 { top: 30px; animation-duration: 10s; animation-delay: -2s; opacity: 0.5; }
.wave-4 { top: 45px; animation-duration: 15s; animation-delay: -4s; opacity: 0.4; }
.wave-5 { top: 60px; animation-duration: 20s; animation-delay: -6s; opacity: 0.3; }

.theme-night .wave {
  background: url('data:image/svg+xml;utf8,<svg viewBox="0 0 1440 120" xmlns="http://www.w3.org/2000/svg"><path d="M0,60 C160,120 320,0 480,60 C640,120 800,0 960,60 C1120,120 1280,0 1440,60 L1440,120 L0,120 Z" fill="rgba(10, 17, 40, 0.7)"/></svg>') repeat-x;
}

@keyframes wave {
  0% { transform: translateX(0) translateZ(0); }
  100% { transform: translateX(-50%) translateZ(0); }
}

/* Optimized wave animation for mobile */
@media (max-width: 768px) {
  .waves {
    height: 80px;
  }
  
  .wave {
    animation: wave 10s linear infinite;
  }
  
  .wave-1 { animation-duration: 15s; }
  .wave-2 { top: 10px; animation-duration: 12s; }
  .wave-3 { top: 20px; animation-duration: 9s; }
  .wave-4 { top: 30px; animation-duration: 12s; }
  .wave-5 { top: 40px; animation-duration: 15s; }
}

/* Boat */
/* Boat Container */
.boat {
  position: absolute;
  bottom: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 200px;
  z-index: 10;
  animation: boatFloat 6s ease-in-out infinite;
  transform-origin: bottom center;
}

/* Masts */
.mast {
  position: absolute;
  bottom: 30px;
  background: #8B4513;
  z-index: 5;
  transform-origin: bottom center;
  animation: mastSway 4s ease-in-out infinite;
}

.main-mast {
  left: 60%;
  width: 4px;
  height: 120px;
  animation-delay: -1s;
}

.mizzen-mast {
  left: 30%;
  width: 3px;
  height: 90px;
  animation-delay: -2s;
}

.mast-top {
  position: absolute;
  top: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 8px;
  height: 8px;
  background: #5D4037;
  border-radius: 50%;
}

/* Sails */
.sail {
  position: absolute;
  transform-origin: bottom center;
  transition: all var(--transition-time) var(--easing);
}

.main-sail {
  bottom: 30px;
  left: -30px;
  width: 60px;
  height: 100px;
  background: linear-gradient(90deg, rgba(255,255,255,0.8), rgba(255,255,255,0.9));
  clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
}

.jib {
  bottom: 30px;
  left: -70px;
  width: 60px;
  height: 80px;
  background: linear-gradient(90deg, rgba(255,255,255,0.7), rgba(255,255,255,0.8));
  clip-path: polygon(100% 0%, 0% 100%, 100% 100%);
}

.mizzen {
  bottom: 30px;
  left: 10px;
  width: 50px;
  height: 70px;
  background: linear-gradient(90deg, rgba(255,255,255,0.8), rgba(255,255,255,0.9));
  clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
}

.sail-detail {
  position: absolute;
  top: 10%;
  left: 10%;
  right: 10%;
  bottom: 10%;
  border: 1px solid rgba(0,0,0,0.1);
  border-radius: 2px;
}

/* Hull and Deck */
.hull {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 150px;
  height: 40px;
  background: var(--day-boat);
  border-radius: 5px 5px 20px 20px;
  transition: all var(--transition-time) var(--easing);
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
  z-index: 3;
}

.deck {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.1);
  border-radius: 5px 5px 20px 20px;
  overflow: hidden;
}

.cabin {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 15px;
  background: rgba(0,0,0,0.2);
  border-radius: 3px;
}

.railing {
  position: absolute;
  height: 5px;
  background: rgba(0,0,0,0.1);
  border-radius: 2px;
}

.railing.front {
  top: 5px;
  left: 10px;
  right: 60%;
}

.railing.back {
  top: 5px;
  left: 60%;
  right: 10px;
}

/* Water effects */
.bow-wave,
.stern-wave {
  position: absolute;
  bottom: -5px;
  background: rgba(255,255,255,0.3);
  border-radius: 50%;
  opacity: 0.7;
  animation: waterRipple 3s ease-in-out infinite;
}

.bow-wave {
  left: 25%;
  width: 30px;
  height: 10px;
  animation-delay: 0s;
}

.stern-wave {
  right: 25%;
  width: 20px;
  height: 8px;
  animation-delay: -1.5s;
}

.theme-night .hull {
  background: var(--night-boat);
}

.theme-night .sail::before {
  border-bottom-color: var(--night-sail);
}

/* Animations */
@keyframes boatFloat {
  0%, 100% { 
    transform: translateX(-50%) translateY(0) rotate(-1deg);
  }
  25% { 
    transform: translateX(-50%) translateY(-5px) rotate(0.5deg);
  }
  50% { 
    transform: translateX(-50%) translateY(-10px) rotate(1deg);
  }
  75% { 
    transform: translateX(-50%) translateY(-5px) rotate(-0.5deg);
  }
}



#moon-dot-1 {
  left: 10px;
  top: 3px;
  position: absolute;
  width: 6px;
  height: 6px;
  z-index: 4;
}

#moon-dot-2 {
  left: 2px;
  top: 10px;
  position: absolute;
  width: 10px;
  height: 10px;
  z-index: 4;
}

#moon-dot-3 {
  left: 16px;
  top: 18px;
  position: absolute;
  width: 3px;
  height: 3px;
  z-index: 4;
}

#light-ray-1 {
  left: -8px;
  top: -8px;
  position: absolute;
  width: 43px;
  height: 43px;
  z-index: -1;
  fill: white;
  opacity: 10%;
}

#light-ray-2 {
  left: -50%;
  top: -50%;
  position: absolute;
  width: 55px;
  height: 55px;
  z-index: -1;
  fill: white;
  opacity: 10%;
}

#light-ray-3 {
  left: -18px;
  top: -18px;
  position: absolute;
  width: 60px;
  height: 60px;
  z-index: -1;
  fill: white;
  opacity: 10%;
}

.cloud-light {
  position: absolute;
  fill: #eee;
  animation-name: cloud-move;
  animation-duration: 6s;
  animation-iteration-count: infinite;
}

.cloud-dark {
  position: absolute;
  fill: #ccc;
  animation-name: cloud-move;
  animation-duration: 6s;
  animation-iteration-count: infinite;
  animation-delay: 1s;
}

#cloud-1 {
  left: 30px;
  top: 15px;
  width: 40px;
}

#cloud-2 {
  left: 44px;
  top: 10px;
  width: 20px;
}

#cloud-3 {
  left: 18px;
  top: 24px;
  width: 30px;
}

#cloud-4 {
  left: 36px;
  top: 18px;
  width: 40px;
}

#cloud-5 {
  left: 48px;
  top: 14px;
  width: 20px;
}

#cloud-6 {
  left: 22px;
  top: 26px;
  width: 30px;
}

@keyframes cloud-move {
  0% {
    transform: translateX(0px);
  }

  40% {
    transform: translateX(4px);
  }

  80% {
    transform: translateX(-4px);
  }

  100% {
    transform: translateX(0px);
  }
}


/* Hide moon dots by default */
.moon-dot {
  opacity: 0;
  position: absolute;
  background: #888;
  border-radius: 50%;
  transition: opacity 0.5s ease-in-out;
}

/* Show moon dots in night mode */
.night-mode .moon-dot {
  opacity: 0.9;
}

/* Position moon dots */
#moon-dot-1 { top: 30%; left: 30%; width: 15px; height: 15px; }
#moon-dot-2 { top: 50%; right: 20%; width: 10px; height: 10px; }
#moon-dot-3 { bottom: 20%; left: 40%; width: 8px; height: 8px; }

/* Stars */
.stars {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  opacity: 0;
}

.star {
  position: absolute;
  background-color: white;
  border-radius: 50%;
  pointer-events: none;
  animation: twinkle 3s infinite ease-in-out;
  will-change: transform, opacity;
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
}

.theme-night .star {
  opacity: 1 !important;
}
.theme-night .stars {
  opacity: 1 !important;
}

@keyframes twinkle {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.5); opacity: 1; }
}

/* Clouds */

.night-mode .cloud {
  filter: brightness(0.6);
}

/* Moon Dots */
.moon-dot {
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
  fill: var(--moon-color);
}

.night-mode .moon-dot {
  opacity: 0.9;
}

/* Light Rays */
.light-ray {
  opacity: 0.7;
  transition: opacity 0.5s ease-in-out;
  fill: var(--sun-color);
}

.night-mode .light-ray {
  opacity: 0;
}

/* Scene Container */
.scene {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

/* Sky */
.sky {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 70%;
  background: linear-gradient(to bottom, #1e3c72 0%, #4b6cb7 50%, #87CEEB 100%);
  z-index: 1;
  height: 100vh;
  overflow: hidden;
}

/* Boat */
.boat {
  position: absolute;
  bottom: 50%;
  left: 30%;
  transform: translateX(-50%);
  width: 150px;
  height: 100px;
  z-index: -1;
  animation: boatFloat 6s infinite ease-in-out;
}

.hull {
  position: absolute;
  bottom: 0;
  width: 150px;
  height: 40px;
  background: #8B4513;
  border-radius: 0 0 40px 40px;
  z-index: 2;
}

.sail {
  position: absolute;
  bottom: 35px;
  left: 50%;
  width: 2px;
  height: 0;
  border-left: 40px solid transparent;
  border-right: 0px solid transparent;
  border-bottom: 80px solid #f8f8f8;
  transform-origin: bottom center;
  transform: rotate(-26deg);
  z-index: 1;
}

.sail-2 {
  left: 70%;
  border-left: 0px solid transparent;
  border-right: 40px solid transparent;
  border-bottom: 80px solid #f0f0f0;
  transform: rotate(10deg);
}


/* Ocean with gentle animation */
.ocean {
  position: absolute;
  bottom: -3%;
  height: 20%;
  width: 100%;
  z-index: 1;
  animation: boatFloat 6s infinite ease-in-out;
  box-shadow: 0 -5px 15px rgba(0, 0, 0, 0.2);
  background: linear-gradient(to bottom, var(--day-ocean), #1E3A8A);
  transition: background var(--transition-time) ease-in-out;
}

.theme-night .ocean {
  background: color-mix(in srgb, var(--night-ocean) 85%, transparent);
}


/* Cloud Styles */
.cloud {
  position: absolute;
  background: white;
  border-radius: 50%;
  opacity: 0.8;
  filter: blur(5px);
  z-index: 22222220;
  animation: float 30s linear infinite;
  transition: all var(--transition-time) ease-in-out;
}

.cloud-1 {
  width: 100px;
  height: 40px;
  top: 15%;
  left: 10%;
  animation-duration: 40s;
}

.cloud-2 {
  width: 150px;
  height: 60px;
  top: 25%;
  right: 10%;
  animation-duration: 50s;
  animation-delay: -10s;
}

.cloud-3 {
  width: 80px;
  height: 30px;
  top: 30%;
  left: 30%;
  animation-duration: 45s;
  animation-delay: -5s;
}

@keyframes float {
  0% { 
    transform: translateX(100vw) translateY(0);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% { 
    transform: translateX(-150px) translateY(0);
    opacity: 0;
  }
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .boat {
    transform: scale(0.8) translateX(-50%) !important;
  }
  
  .cloud {
    transform: scale(0.7);
  }
}

@keyframes boatFloat {
  0%, 100% {
    transform: translateY(0) rotate(0.5deg);
  }
  25% {
    transform: translateY(-5px) rotate(-0.5deg);
  }
  50% {
    transform: translateY(0) rotate(0.5deg);
  }
  75% {
    transform: translateY(5px) rotate(-0.5deg);
  }
}