:root {
    --bg-color: #000212;
    --glow-color-dynamic: rgba(45, 215, 255, 0.5); /* Will be changed by JS */
    --key-bg: rgba(26, 28, 46, 0.2);
    --key-border: rgba(100, 255, 255, 0.2);
    --key-shadow: rgba(45, 215, 255, 0.5);
    --text-color: #E0E0E0;
    --title-font: 'Orbitron', sans-serif;
    --body-font: 'Inter', sans-serif;
}

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

html, body {
    height: 100%;
    width: 100%;
    overflow: hidden;
}

body {
    font-family: var(--body-font);
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: #000;
}

@keyframes move-bg {
    0%{background-position:0% 50%}
    50%{background-position:100% 50%}
    100%{background-position:0% 50%}
}

#dynamic-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transition: opacity 1.5s ease-in-out;
    opacity: 0;
    z-index: -3;
}

#moon-mode-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -4; /* Deepest layer */
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
}

#moon-mode-bg .stars, #moon-mode-bg .twinkling, #moon-mode-bg .clouds {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    display: block;
}

#moon-mode-bg .stars {
    background: #000; /* Ensure black background */
}

#moon-mode-bg .twinkling {
    /* --- New, 100% Reliable CSS Starfield --- */
    /* This creates a pattern of different-sized white dots that repeats */
    background:
        radial-gradient(1px 1px at 20px 30px, #eee, rgba(0,0,0,0)),
        radial-gradient(1px 1px at 40px 70px, #fff, rgba(0,0,0,0)),
        radial-gradient(1px 1px at 50px 160px, #ddd, rgba(0,0,0,0)),
        radial-gradient(2px 2px at 90px 40px, #fff, rgba(0,0,0,0)),
        radial-gradient(1px 1px at 150px 120px, #ddd, rgba(0,0,0,0)),
        radial-gradient(1px 1px at 180px 80px, #fff, rgba(0,0,0,0));
    background-size: 200px 200px;
    animation: move-twink-back 150s linear infinite; /* Slightly faster animation */
}


@keyframes move-twink-back {
    from {background-position:0 0;}
    to {background-position:-10000px 5000px;}
}


#moon {
    position: absolute;
    left: 50%;
    top: 110%; /* Start below screen */
    width: 220px;  /* Increased size */
    height: 220px; /* Increased size */
    background-image: url('https://www.stickpng.com/assets/images/580b585b2edb1692e000000e.png'); /* --- FIX: Replaced broken link --- */
    background-color: #000; /* --- THE FIX: Prevents stars from showing through --- */
    background-size: cover;
    border-radius: 50%;
    box-shadow: 0 0 50px 10px rgba(255, 255, 230, 0.3);
    transform: translateX(-50%);
    transition: top 4s ease-out, box-shadow 4s ease-in-out, transform 4s ease-in-out;
    animation: moon-pulse 8s ease-in-out infinite alternate;
    z-index: 2; /* Added to ensure stars are behind the moon */
}

/* --- New Mode Selector Styles --- */
#mode-selector {
    position: fixed;
    top: 30px;
    left: 30px;
    display: flex;
    gap: 20px;
    z-index: 100;
}

.mode-option {
    font-family: var(--title-font);
    font-size: 1rem;
    letter-spacing: 1px;
    color: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 5px 0;
}

.mode-option.active {
    color: #fff;
    text-shadow: 0 0 8px #fff, 0 0 15px var(--key-shadow);
}
/* -------------------------------- */

/* --- Loading Overlay --- */
#loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-color);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease-out;
}
.loading-text {
    font-family: var(--title-font);
    font-size: 1.5rem;
    color: var(--text-color);
    text-shadow: 0 0 10px var(--key-shadow);
}
/* --------------------- */


@keyframes moon-pulse {
    to {
        transform: translateX(-50%) scale(1.05) rotate(1deg);
        box-shadow: 0 0 70px 15px rgba(255, 255, 230, 0.4);
    }
}


.ripple {
    position: absolute;
    transform: translate(-50%, -50%);
    opacity: 0.8;
    pointer-events: none;
    border-radius: 50%;
}

.note-trail {
    position: absolute;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 2;
}

@keyframes twinkle {
    0% { opacity: 0.5; }
    100% { opacity: 1; }
}

#cursor-light {
    position: fixed;
    top: 0;   /* Explicitly set for a reliable anchor point */
    left: 0;  /* Explicitly set for a reliable anchor point */
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--glow-color-dynamic) 0%, rgba(0, 255, 255, 0) 50%);
    pointer-events: none;
    z-index: -1;
    filter: blur(50px);
    will-change: transform;
    transform: scale(0); /* JS will handle positioning */
}

body.sonata-mode #cursor-light {
    /* --- Sonata Projector Style --- */
    /* Making it very dim, larger, and a cold color */
    background: radial-gradient(circle, rgba(150, 160, 200, 0.3) 0%, rgba(150, 160, 200, 0) 60%);
    opacity: 0.6;
    filter: blur(60px); /* More blur for a softer look */
}

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

.main-content {
    display: grid;
    place-items: center;
    gap: 40px;
}

.title {
    font-family: var(--title-font);
    font-size: 4rem;
    letter-spacing: 2px;
    background: linear-gradient(90deg, #4f46e5, #be185d, #4f46e5);
    background-size: 200% auto;
    color: transparent;
    -webkit-background-clip: text;
    background-clip: text;
    animation: text-glow 10s linear infinite;
}

@keyframes text-glow {
    to {
        background-position: -200% center;
    }
}

.keyboard {
    background: var(--key-bg);
    border: 1px solid var(--key-border);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 0 40px rgba(0,0,0,0.5), inset 0 0 10px rgba(100, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 2;
    margin-top: 100px; /* Added to move the keyboard down a bit */
}

.keyboard-row {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.key {
    position: relative;
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 400;
    user-select: none;
    transition: all 0.2s ease;
}

.key.pressed {
    transform: translateY(2px);
    box-shadow: inset 0 0 10px rgba(0,0,0,0.5);
}


.key .note-name {
    position: absolute;
    bottom: 5px;
    right: 8px;
    opacity: 0.7; /* Always visible but subtle */
    font-size: 0.7rem;
    color: var(--text-color);
    pointer-events: none;
}

.key:hover .note-name {
    opacity: 1;
}

.key.prompt {
    animation: prompt-glow 1.5s infinite alternate;
}

@keyframes prompt-glow {
    from {
        box-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px var(--key-shadow);
    }
    to {
        box-shadow: 0 0 20px var(--key-shadow), 0 0 30px var(--key-shadow), 0 0 40px var(--key-shadow);
    }
}


.controls {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    position: relative;
}

.custom-select-wrapper {
    position: relative;
    user-select: none;
    width: 200px;
}

.custom-select {
    position: relative;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--key-border);
    border-radius: 8px;
}

.custom-select__trigger {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 12px;
    font-size: 1rem;
    font-weight: 300;
    color: var(--text-color);
    background: transparent;
    cursor: pointer;
}

.custom-options {
    position: absolute;
    display: block;
    top: 100%;
    left: 0;
    right: 0;
    border: 1px solid var(--key-border);
    border-top: 0;
    border-radius: 0 0 8px 8px;
    background: var(--bg-color);
    transition: all 0.2s;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    z-index: 10;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.custom-select.open .custom-options {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.custom-option {
    position: relative;
    display: block;
    padding: 8px 12px;
    font-size: 1rem;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.2s;
}

.custom-option:hover {
    background-color: var(--key-border);
    color: var(--bg-color);
}