:root {
    --background-color-dark: #121212;
    --text-color-dark: #e0e0e0;
    --primary-color-dark: #00ffc3;
    --primary-color-dark-dark: #00b389;
    --secondary-color-dark: #ff00ff;
    --surface-color-dark: #1e1e1e;
    --error-color-dark: #cf6679;

    --background-color: var(--background-color-dark);
    --text-color: var(--text-color-dark);
    --primary-color: var(--primary-color-dark);
    --primary-color-darker: var(--primary-color-dark-dark);
    --secondary-color: var(--secondary-color-dark);
    --surface-color: var(--surface-color-dark);
    --error-color: var(--error-color-dark);
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: 'Share Tech Mono', monospace;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
}

#app {
    width: 100%;
    max-width: 800px;
    padding: 2rem;
    box-sizing: border-box;
    text-align: center;
}

h1, h2, h3 {
    text-align: center;
    color: var(--primary-color);
    text-shadow: 0 0 5px var(--primary-color);
}

.main-menu, .lobby, .game {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

button {
    background-color: var(--primary-color);
    color: #111;
    border: 1px solid var(--primary-color);
    padding: 1rem 2rem;
    font-size: 1rem;
    border-radius: 0;
    cursor: pointer;
    transition: background-color 0.3s, box-shadow 0.3s;
    box-shadow: 0 0 10px var(--primary-color);
    text-transform: uppercase;
    font-family: 'Share Tech Mono', monospace;
}

button:hover {
    background-color: var(--primary-color-darker);
    box-shadow: 0 0 20px var(--primary-color);
}

.main-menu #create-game {
    font-size: 1.2rem;
    transition: all 0.2s ease-in-out;
}

.main-menu #create-game:hover {
    box-shadow: 0 0 30px var(--primary-color);
    transform: scale(1.05);
}

.or-separator {
    font-weight: bold;
    color: var(--text-color);
    margin: 1rem 0;
    position: relative;
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.or-separator::before,
.or-separator::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 40%;
    height: 1px;
    background-color: var(--primary-color);
    box-shadow: 0 0 5px var(--primary-color);
}

.or-separator::before {
    left: 0;
}

.or-separator::after {
    right: 0;
}

.join-game {
    display: flex;
    border: 1px solid var(--primary-color);
    box-shadow: 0 0 10px var(--primary-color);
    margin-top: 1rem;
    border-radius: 0;
}

.join-game input[type="text"] {
    border: none;
    flex-grow: 1;
    background-color: var(--surface-color);
    padding: 1rem;
    color: var(--text-color);
    font-size: 1rem;
}

.join-game button {
    border: none;
    border-left: 1px solid var(--primary-color);
    box-shadow: none;
    border-radius: 0;
}

.player-list, .game-settings {
    background-color: var(--surface-color);
    padding: 1.5rem;
    border-radius: 0;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--primary-color);
}

.player-list ul {
    list-style: none;
    padding: 0;
}

.player-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--background-color);
}

.player-list li:last-child {
    border-bottom: none;
}

.game-settings {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.game-settings label {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.game-settings input {
    width: 80px;
}

.game {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.scores {
    display: flex;
    justify-content: space-around;
    width: 100%;
    padding: 1rem;
    background-color: var(--surface-color);
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.rhythm-display {
    width: 100%;
    height: 100px;
    background-color: var(--surface-color);
    border: 2px solid var(--primary-color);
    border-radius: 8px;
    position: relative;
    overflow: hidden;
}

.beat {
    position: absolute;
    top: 0;
    width: 10px;
    height: 100%;
    background-color: var(--secondary-color);
    box-shadow: 0 0 10px var(--secondary-color);
}

.hit-zone {
    position: absolute;
    left: 20%;
    width: 10px;
    height: 100%;
    background-color: var(--primary-color);
    box-shadow: 0 0 15px var(--primary-color);
}

input[type="text"], input[type="number"] {
    background-color: #222;
    color: var(--font-color);
    border: 1px solid var(--primary-color);
    padding: 10px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 1em;
    width: 100%;
    box-sizing: border-box; /* Ensures padding doesn't affect overall width */
    margin-bottom: 10px;
}

.main-menu {
    text-align: center;
}

.mode-selection {
    display: flex;
    justify-content: space-around;
    gap: 20px;
    margin-top: 20px;
}

.mode-card {
    background-color: #1a1a1a;
    border: 1px solid var(--primary-color);
    border-radius: 8px;
    padding: 20px;
    width: 45%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.mode-card h2 {
    margin-top: 0;
    color: var(--primary-color);
}

.mode-card p {
    margin-bottom: 20px;
}

.timer {
    font-size: 1.5rem;
    color: var(--primary-color);
    text-shadow: 0 0 8px var(--primary-color);
}

/* Custom Alert Modal */
.custom-alert-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.custom-alert-box {
    background-color: var(--surface-color);
    padding: 2rem;
    border: 1px solid var(--primary-color);
    box-shadow: 0 0 20px var(--primary-color);
    text-align: center;
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 80%;
}

.custom-alert-box p {
    margin: 0;
    font-size: 1.2rem;
}

.custom-alert-box button {
    align-self: center;
}

.copy-button {
    background-color: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    margin-left: 1rem;
    cursor: pointer;
    box-shadow: none;
}

.copy-button:hover {
    background-color: var(--primary-color-darker);
    color: #111;
}

@media (max-width: 768px) {
    .mode-selection {
        flex-direction: column;
        align-items: center;
    }

    .mode-card {
        width: 90%;
    }
}

/* Larger title on main menu */
.main-title {
    font-size: 4rem;
    margin-bottom: 1rem;
}

/* Create Game button hover already scales; add same effect to Start Game and How to Play */
.main-menu #start-singleplayer,
.how-to-play-button {
    transition: all 0.2s ease-in-out;
}

.main-menu #start-singleplayer:hover,
.how-to-play-button:hover {
    box-shadow: 0 0 30px var(--primary-color);
    transform: scale(1.05);
}

/* Got It button in How to Play popup */
#close-how-to-play {
    transition: all 0.2s ease-in-out;
}

#close-how-to-play:hover {
    box-shadow: 0 0 30px var(--primary-color);
    transform: scale(1.05);
}

/* Game ID input focus style: remove default outline without adding inner border */
#game-id-input:focus {
    outline: none;
    border: none;
}

/* Intensify glow on the wrapper when any child is focused */
.join-game:focus-within {
    box-shadow: 0 0 30px 5px var(--primary-color);
}

/* Remove default blue outline for all text inputs (fallback) */
input[type="text"]:focus {
    outline: none;
}