/* General Styles */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: linear-gradient(135deg, #013a01 0%, #000 100%);
    color: #fff;
}

.hidden {
    display: none;
}

#game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
    box-sizing: border-box;
    position: relative;
    z-index: 2;
    background: #181818;
    box-shadow: 0 0 32px 8px rgba(0,0,0,0.85);
    border-radius: 16px;
    padding: 16px 0;
}

/* Start Screen */
#start-screen {
    text-align: center;
}

#start-button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
}

/* Game Screen */
#game-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    width: 100%;
    gap: 4px;
}

#game-board {
    background-color: #222;
    border: 2px solid #fff;
    width: 450px;
    height: 900px;
    display: block;
    max-width: 360px;
    max-height: 480px;
    z-index: 3;
    margin-bottom: 0;
}

canvas {
    max-width: 100%;
    height: auto;
}

#info-panel {
    margin-left: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 10px;
    width: 90vw;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 3;
}

#next-board {
    width: 120px;
    height: 120px;
    display: block;
    width: 60px;
    height: 60px;
    background-color: #013a01;
    border: 2px solid #fff;
    z-index: 3;
}

button {
    margin-top: 10px;
    padding: 10px;
    font-size: 14px;
    cursor: pointer;
}

/* Game Over Screen */
#game-over-screen {
    text-align: center;
}

#restart-button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
}

#game-over-screen h1 {
    font-size: 2.5rem;
    color: #ff1744;
    animation: flashGameOver 1s infinite alternate;
    text-shadow: 0 0 10px #ff1744, 0 0 20px #fff;
}

@keyframes flashGameOver {
    0% { opacity: 1; transform: scale(1); }
    100% { opacity: 0.5; transform: scale(1.08); }
}

#final-score {
    font-size: 2rem;
    color: #fff;
    margin: 20px 0;
    text-shadow: 0 0 8px #4e54c8;
    animation: scorePop 0.7s;
}

@keyframes scorePop {
    0% { transform: scale(0.8); opacity: 0.5; }
    60% { transform: scale(1.2); opacity: 1; }
    100% { transform: scale(1); opacity: 1; }
}

#final-score-overlay {
    font-size: 2rem;
    color: #fff;
    margin: 20px 0;
    text-shadow: 0 0 8px #4e54c8;
    animation: scorePop 0.7s;
}

#restart-overlay {
    padding: 12px 32px;
    font-size: 1.2rem;
    border-radius: 8px;
    background: #222;
    color: #fff;
    border: none;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    margin-top: 16px;
}

#game-over-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: rgba(0,0,0,0.7);
    z-index: 10;
}

#game-over-overlay.hidden {
    display: none;
}

#game-over-overlay h1 {
    font-size: 3rem;
    color: #ff1744;
    animation: flashGameOver 1s infinite alternate;
    text-shadow: 0 0 10px #ff1744, 0 0 20px #fff;
}

@keyframes flashGameOver {
    0% { opacity: 1; transform: scale(1); }
    100% { opacity: 0.5; transform: scale(1.08); }
}

body.dark {
    background-color: #181818;
    color: #eee;
}

#toggles {
    display: flex;
    gap: 10px;
    margin-top: 10px;
    width: 90vw;
    justify-content: center;
}

#toggles button {
    background: #444;
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 20px;
    cursor: pointer;
    transition: background 0.2s;
}
#toggles button:active {
    background: #666;
}

.line-clear {
    animation: lineClear 0.5s;
}
@keyframes lineClear {
    0% { background: yellow; }
    100% { background: inherit; }
}

.level-up {
    animation: levelUp 0.7s;
}
@keyframes levelUp {
    0% { box-shadow: 0 0 20px #0ff; }
    100% { box-shadow: none; }
}

.game-over {
    animation: gameOver 1s;
}
@keyframes gameOver {
    0% { background: red; }
    100% { background: inherit; }
}

@media (max-width: 600px) {
    body {
        padding: 0;
        margin: 0;
        font-size: 16px;
    }
    #game-container {
        flex-direction: column;
        align-items: center;
        max-width: 100vw;
        width: 100vw;
        min-height: 100vh;
    }
    #game-screen {
        flex-direction: column;
        align-items: center;
        width: 100vw;
        gap: 2px;
    }
    #game-board {
        width: 90vw;
        height: 160vw;
        max-width: 320px;
        max-height: 570px;
        aspect-ratio: 10 / 20;
        display: block;
    }
    #info-panel {
        margin-left: 0;
        margin-top: 10px;
        width: 90vw;
        display: flex;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    #controls {
        flex-wrap: wrap;
        width: 100vw;
        justify-content: center;
        margin-top: 2px;
        margin-bottom: 0;
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 2px;
    }
    #controls button {
        width: 44px;
        height: 44px;
        font-size: 1.5rem;
        margin: 2px;
    }
    #next-board {
        width: 80px;
        height: 80px;
    }
}

html, body {
    max-width: 100vw;
    overflow-x: hidden;
}

#game-container {
    box-sizing: border-box;
    width: 100%;
}

#game-screen {
    width: 100%;
}

#game-board {
    position: relative;
}

#next-board {
    position: relative;
}

#info-panel {
    position: relative;
}

#controls {
    position: relative;
}

#toggles {
    position: relative;
}

#game-over-overlay {
    z-index: 10;
}

#matrix-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: none;
    background: transparent;
}

#game-heading {
    text-align: center;
    margin-bottom: 16px;
}
.animated-heading {
    font-size: 2.8rem;
    font-family: 'Orbitron', Arial, sans-serif;
    color: #0f0;
    letter-spacing: 0.15em;
    text-shadow: 0 0 16px #0f0, 0 0 32px #013a01;
    animation: headingGlow 2s infinite alternate;
}
@keyframes headingGlow {
    0% { text-shadow: 0 0 16px #0f0, 0 0 32px #013a01; }
    100% { text-shadow: 0 0 32px #0f0, 0 0 64px #013a01; }
}
.modal {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.85);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
}
.modal-content {
    background: #222;
    padding: 32px 24px;
    border-radius: 12px;
    box-shadow: 0 0 24px #013a01;
    text-align: center;
}
#username-input {
    font-size: 1.2rem;
    padding: 8px;
    border-radius: 6px;
    border: 1px solid #0f0;
    margin-bottom: 16px;
    width: 80%;
    background: #181818;
    color: #0f0;
}
#username-submit {
    font-size: 1.1rem;
    padding: 8px 24px;
    border-radius: 6px;
    background: #0f0;
    color: #222;
    border: none;
    cursor: pointer;
    box-shadow: 0 2px 8px #013a01;
    transition: background 0.2s;
}
#username-submit:hover {
    background: #13ff13;
}
#top-bar {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    width: 100%;
    padding: 12px 24px 0 24px;
    box-sizing: border-box;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 20;
}
#game-heading {
    flex: 1;
    text-align: center;
    margin-bottom: 0;
}
.animated-heading {
    margin: 0;
    font-size: 2.8rem;
    font-family: 'Orbitron', Arial, sans-serif;
    color: #0f0;
    letter-spacing: 0.15em;
    text-shadow: 0 0 16px #0f0, 0 0 32px #013a01;
    animation: headingGlow 2s infinite alternate;
}
#player-info {
    text-align: right;
    min-width: 120px;
    margin-top: 8px;
}
#player-highscore {
    color: #fff;
    font-size: 1.1rem;
    margin-bottom: 2px;
    text-shadow: 0 0 4px #0f0;
    font-family: 'Orbitron', Arial, sans-serif;
    animation: highscoreGlow 1.5s infinite alternate;
}

#score, #level {
    color: #00e0ff;
    font-size: 1.2rem;
    margin-bottom: 4px;
    text-shadow: 0 0 4px #00e0ff, 0 0 8px #00e0ff;
    font-family: 'Orbitron', Arial, sans-serif;
    animation: scoreGlow 1.5s infinite alternate;
}

@keyframes scoreGlow {
    0% { text-shadow: 0 0 4px #00e0ff, 0 0 8px #00e0ff; }
    100% { text-shadow: 0 0 12px #00e0ff, 0 0 24px #00e0ff; }
}

#player-name {
    color: #fff;
    font-size: 1.1rem;
    margin-bottom: 2px;
    text-shadow: 0 0 4px #0f0;
    font-family: 'Orbitron', Arial, sans-serif;
    animation: highscoreGlow 1.5s infinite alternate;
}

@keyframes highscoreGlow {
    0% { text-shadow: 0 0 4px #0f0, 0 0 8px #0f0; }
    100% { text-shadow: 0 0 12px #0f0, 0 0 24px #0f0; }
}
#pause-container {
    width: 100%;
    display: flex;
    justify-content: center;
    margin-top: 2px;
}
#pause-button {
    padding: 14px 36px;
    font-size: 1.3rem;
    border-radius: 12px;
    background: #0f0;
    color: #222;
    border: none;
    cursor: pointer;
    box-shadow: 0 2px 8px #013a01;
    transition: background 0.2s, transform 0.2s;
    animation: buttonPulse 1.2s infinite alternate;
}
@keyframes buttonPulse {
    0% { box-shadow: 0 2px 8px #013a01; transform: scale(1); }
    100% { box-shadow: 0 4px 16px #0f0; transform: scale(1.08); }
}
#controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4px;
    margin-top: 4px;
    margin-bottom: 0;
    width: 100%;
}
#controls button {
    background: #0f0;
    color: #222;
    border: none;
    border-radius: 50%;
    width: 72px;
    height: 72px;
    font-size: 2.4rem;
    box-shadow: 0 2px 8px #013a01;
    opacity: 0.85;
    transition: opacity 0.2s, transform 0.2s, box-shadow 0.2s;
    margin: 0 6px;
    animation: buttonPulse 1.2s infinite alternate;
}
#controls button:active, #controls button:focus {
    opacity: 1;
    transform: scale(1.12);
    box-shadow: 0 4px 16px #0f0;
    outline: none;
}
@media (max-width: 600px) {
    #top-bar {
        flex-direction: column;
        align-items: center;
        padding: 8px 8px 0 8px;
    }
    #player-info {
        text-align: center;
        margin-top: 4px;
    }
    #controls {
        gap: 2px;
        margin-top: 2px;
    }
    #controls button {
        width: 56px;
        height: 56px;
        font-size: 1.7rem;
    }
    #pause-button {
        font-size: 1.1rem;
        padding: 10px 24px;
    }
}