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

:root {
    --abyssal-black: #0b0e14;
    --deep-slate: #1a1f2e;
    --chrome-grey: #3a3f47;
    --silver-mist: #c8cdd0;
    --frost-white: #e8eef3;
    --warm-ivory: #f0ece4;
    --coral-red: #d4364b;
    --ocean-cyan: #00b4d8;
    --amber-glow: #e8a838;
    --violet-pulse: #9b72cf;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--abyssal-black);
    font-family: 'Karla', sans-serif;
    font-weight: 300;
    color: var(--silver-mist);
}

#aquarium {
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

#ripple-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

#fish-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.fish {
    position: absolute;
    width: 60px;
    height: 30px;
    transition: transform 0.3s ease;
}

.fish svg {
    width: 100%;
    height: 100%;
}

#rake-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.04;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 38px,
        var(--chrome-grey) 38px,
        var(--chrome-grey) 39px
    );
}

#glitch-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    pointer-events: none;
    opacity: 0;
    background: linear-gradient(
        180deg,
        transparent 0%,
        rgba(0, 180, 216, 0.03) 50%,
        transparent 100%
    );
    mix-blend-mode: screen;
}

#glitch-overlay.active {
    opacity: 1;
    animation: glitch-flash 0.15s ease-out;
}

@keyframes glitch-flash {
    0% { opacity: 1; transform: translateX(-2px); }
    25% { opacity: 0.8; transform: translateX(2px); }
    50% { opacity: 0.6; transform: translateX(-1px); }
    100% { opacity: 0; transform: translateX(0); }
}

#site-title {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 5;
    text-align: center;
    opacity: 0;
    animation: fade-in 3s ease-out 0.5s forwards;
}

#site-title h1 {
    font-family: 'Caveat', cursive;
    font-weight: 700;
    font-size: clamp(1.8rem, 4vw, 3.2rem);
    letter-spacing: 0.02em;
    color: var(--frost-white);
    background: linear-gradient(135deg, var(--frost-white), var(--silver-mist), var(--ocean-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

#site-title .subtitle {
    font-family: 'Nanum Pen Script', cursive;
    font-size: clamp(0.9rem, 2vw, 1.4rem);
    color: var(--chrome-grey);
    margin-top: 0.5rem;
    letter-spacing: 0.1em;
}

@keyframes fade-in {
    from { opacity: 0; transform: translate(-50%, -45%); }
    to { opacity: 1; transform: translate(-50%, -50%); }
}

#simulation-notice {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 5;
    opacity: 0;
    animation: fade-in-notice 2s ease-out 4s forwards;
}

#simulation-notice .mono-text {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--chrome-grey);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    padding: 0.4rem 1rem;
    border: 1px solid rgba(58, 63, 71, 0.3);
    border-radius: 2px;
}

@keyframes fade-in-notice {
    from { opacity: 0; }
    to { opacity: 0.6; }
}

#floating-islands {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 4;
    pointer-events: none;
}

.island {
    position: absolute;
    max-width: 280px;
    opacity: 0;
    transition: opacity 1.5s ease, transform 1.5s ease;
    padding: 1.5rem;
}

.island.visible {
    opacity: 1;
}

.island h2 {
    font-family: 'Caveat', cursive;
    font-weight: 700;
    font-size: 1.6rem;
    color: var(--frost-white);
    margin-bottom: 0.5rem;
}

.island p {
    font-family: 'Karla', sans-serif;
    font-weight: 300;
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--silver-mist);
    opacity: 0.7;
}

#island-1 {
    top: 20%;
    left: 10%;
    transform: translateY(20px);
}

#island-1.visible {
    transform: translateY(0);
}

#island-2 {
    top: 45%;
    right: 12%;
    transform: translateY(20px);
}

#island-2.visible {
    transform: translateY(0);
}

#island-3 {
    bottom: 25%;
    left: 15%;
    transform: translateY(20px);
}

#island-3.visible {
    transform: translateY(0);
}

#depth-indicator {
    position: absolute;
    top: 2rem;
    right: 2rem;
    z-index: 5;
    opacity: 0;
    animation: fade-in-notice 2s ease-out 3s forwards;
}

#depth-indicator .mono-text {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    color: var(--chrome-grey);
    letter-spacing: 0.1em;
}

#cursor-fish {
    position: fixed;
    width: 20px;
    height: 12px;
    pointer-events: none;
    z-index: 20;
    opacity: 0;
    transition: opacity 0.5s ease;
}

#cursor-fish::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: var(--ocean-cyan);
    clip-path: polygon(0% 50%, 70% 0%, 100% 50%, 70% 100%);
    opacity: 0.6;
}

body:hover #cursor-fish {
    opacity: 1;
}