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

:root {
    --tetris-cyan: #00a0a0;
    --tetris-cyan-light: #00f0f0;
    --tetris-cyan-dark: #006666;
    --tetris-bg-light: #8ca6a6;
    --tetris-bg-dark: #5a7a7a;
    --tetris-border: #00f0f0;
    
    /* Original Tetris colors */
    --tetris-i: #00f0f0; /* Cyan */
    --tetris-j: #0000f0; /* Blue */
    --tetris-l: #f0a000; /* Orange */
    --tetris-o: #f0f000; /* Yellow */
    --tetris-s: #00f000; /* Green */
    --tetris-t: #a000f0; /* Purple */
    --tetris-z: #f00000; /* Red */
    
    /* Game board */
    --board-bg: #000;
    --board-grid: rgba(255, 255, 255, 0.05);
}

/* VT323 font is loaded from Google Fonts in the HTML */

@keyframes scanline {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 0 30px;
    }
}

@keyframes crt-flicker {
    0% {
        opacity: 0.97;
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0.98;
    }
}

@keyframes glow {
    0% {
        box-shadow: 0 0 5px var(--tetris-cyan), 0 0 10px var(--tetris-cyan);
    }
    50% {
        box-shadow: 0 0 10px var(--tetris-cyan-light), 0 0 15px var(--tetris-cyan-light);
    }
    100% {
        box-shadow: 0 0 5px var(--tetris-cyan), 0 0 10px var(--tetris-cyan);
    }
}

body {
    font-family: 'Press Start 2P', 'Courier New', monospace;
    background: #000;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    overflow-x: hidden;
}

.arcade-frame {
    background: 
        linear-gradient(45deg, var(--tetris-bg-dark) 25%, var(--tetris-bg-light) 25%) -10px 0,
        linear-gradient(-45deg, var(--tetris-bg-dark) 25%, var(--tetris-bg-light) 25%) -10px 0,
        linear-gradient(45deg, var(--tetris-bg-light) 75%, var(--tetris-bg-dark) 75%),
        linear-gradient(-45deg, var(--tetris-bg-light) 75%, var(--tetris-bg-dark) 75%);
    background-size: 20px 20px;
    padding: 20px;
    border-radius: 0;
    box-shadow: 
        inset 0 0 10px rgba(0, 0, 0, 0.5),
        0 5px 15px rgba(0, 0, 0, 0.5);
}

.tech-border {
    background: 
        repeating-linear-gradient(
            to right,
            var(--tetris-bg-dark),
            var(--tetris-bg-dark) 20px,
            var(--tetris-bg-light) 20px,
            var(--tetris-bg-light) 40px
        ),
        repeating-linear-gradient(
            to bottom,
            var(--tetris-bg-dark),
            var(--tetris-bg-dark) 20px,
            var(--tetris-bg-light) 20px,
            var(--tetris-bg-light) 40px
        );
    padding: 15px;
    border-radius: 0;
    position: relative;
    overflow: hidden;
}

/* Create the maze-like pattern with pseudo-elements */
.tech-border::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(45deg, transparent 25%, var(--tetris-bg-dark) 25%, var(--tetris-bg-dark) 75%, transparent 75%),
        linear-gradient(-45deg, transparent 25%, var(--tetris-bg-dark) 25%, var(--tetris-bg-dark) 75%, transparent 75%);
    background-size: 40px 40px;
    pointer-events: none;
}

.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    background-color: var(--tetris-bg-dark);
    padding: 15px;
    position: relative;
}

.game-wrapper {
    display: flex;
    gap: 15px;
    background-color: var(--tetris-bg-dark);
    padding: 15px;
}

.stats-panel {
    background-color: #000;
    padding: 12px;
    border: 2px solid var(--tetris-border);
    min-width: 180px;
}

.statistics {
    margin-top: 15px;
}

.game-area {
    display: flex;
    gap: 15px;
}

#game-board {
    background-color: var(--board-bg);
    border: 2px solid var(--tetris-border);
}

.side-panel {
    display: flex;
    flex-direction: column;
    gap: 15px;
    min-width: 140px;
    padding: 10px;
    border: 2px solid var(--tetris-border);
    background-color: #000;
}

h2, h3 {
    color: #fff;
    text-align: center;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.lines, .score-container, .level-container, .next-piece {
    text-align: center;
    background-color: #000;
    padding: 5px;
    border: 2px solid var(--tetris-border);
}

#score, #level, #lines {
    font-size: 1.2rem;
    font-weight: bold;
    color: #fff;
    font-family: 'VT323', 'Courier New', monospace;
    text-shadow: 0 0 5px var(--tetris-cyan-light);
    letter-spacing: 2px;
}

#next-piece-canvas {
    background-color: #000;
    border: none;
    margin: 0 auto;
    display: block;
}

.controls {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
    max-width: 500px;
}

.mobile-controls-container {
    display: none;
}

.mobile-controls {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 8px;
    margin-bottom: 8px;
    background-color: var(--tetris-bg-dark);
    padding: 5px;
    width: 100%;
}

.game-buttons {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
}

#ghost-toggle {
    margin-top: 8px;
    font-size: 0.7rem;
    padding: 6px 12px;
}

button {
    padding: 8px 16px;
    font-size: 1rem;
    background-color: #000;
    color: var(--tetris-cyan-light);
    border: 2px solid var(--tetris-cyan);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
    text-transform: uppercase;
    box-shadow: 
        0 0 5px var(--tetris-cyan),
        inset 0 0 5px var(--tetris-cyan);
    text-shadow: 0 0 5px var(--tetris-cyan-light);
    font-family: 'Press Start 2P', 'Courier New', monospace;
    font-size: 0.8rem;
    letter-spacing: 1px;
}

button:hover {
    background-color: var(--tetris-cyan);
    color: #000;
    box-shadow: 
        0 0 10px var(--tetris-cyan-light),
        inset 0 0 10px rgba(255, 255, 255, 0.5);
}

button:active {
    transform: scale(0.95);
    box-shadow: 
        0 0 5px var(--tetris-cyan),
        inset 0 0 5px var(--tetris-cyan);
}

#piece-stats {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 8px;
}

.piece-stat {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px;
    background-color: #000;
    border: 1px solid var(--tetris-border);
}

.piece-preview {
    display: flex;
    gap: 1px;
}

.piece-count {
    color: #ff0000;
    font-family: 'VT323', 'Courier New', monospace;
}

/* Welcome screen styles */
.welcome-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.welcome-content {
    background-color: #000;
    border: 2px solid var(--tetris-cyan);
    padding: 20px;
    width: 90%;
    max-width: 500px;
    text-align: center;
    position: relative;
}

.welcome-content h1 {
    color: var(--tetris-cyan-light);
    font-size: 2.5rem;
    margin-bottom: 20px;
    text-shadow: 
        0 0 10px var(--tetris-cyan-light),
        0 0 20px var(--tetris-cyan-light);
    letter-spacing: 4px;
    font-family: 'Press Start 2P', 'Courier New', monospace;
    animation: glow 1.5s infinite alternate;
}

.instructions {
    margin: 20px 0;
    text-align: left;
}

.instructions h2 {
    color: var(--tetris-cyan);
    text-align: center;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.controls-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 15px;
}

.desktop-controls, .mobile-controls-info, .scoring {
    background-color: #000;
    padding: 10px;
    border: 1px solid var(--tetris-cyan);
}

.instructions h3 {
    color: var(--tetris-cyan);
    margin-bottom: 8px;
    font-size: 1rem;
}

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

.instructions li {
    color: #fff;
    margin-bottom: 5px;
    font-size: 0.9rem;
}

.pro-tip {
    color: #888;
    font-size: 0.8rem;
    margin-top: 5px;
    padding-top: 5px;
    border-top: 1px solid var(--tetris-cyan-dark);
}

.start-btn {
    background-color: #000;
    color: var(--tetris-cyan-light);
    border: 2px solid var(--tetris-cyan-light);
    padding: 10px 30px;
    font-size: 1.2rem;
    cursor: pointer;
    margin-top: 15px;
    text-transform: uppercase;
    transition: all 0.2s;
}

.start-btn:hover {
    background-color: var(--tetris-cyan-light);
    color: #000;
}

.hidden {
    display: none !important;
}

/* Game Over Modal */
.game-over-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background-color: #000;
    border: 2px solid var(--tetris-cyan-light);
    padding: 30px;
    text-align: center;
    max-width: 400px;
    width: 90%;
    animation: glow 1.5s infinite alternate;
}

.modal-content h2 {
    color: var(--tetris-cyan-light);
    font-size: 2rem;
    margin-bottom: 20px;
    text-shadow: 
        0 0 10px var(--tetris-cyan-light),
        0 0 20px var(--tetris-cyan-light);
}

.final-score {
    margin: 20px 0;
    color: #fff;
    font-family: 'VT323', 'Courier New', monospace;
}

.final-score p {
    margin: 10px 0;
    font-size: 1.2rem;
}

.modal-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 20px;
}

.modal-btn {
    background-color: #000;
    color: var(--tetris-cyan-light);
    border: 2px solid var(--tetris-cyan-light);
    padding: 10px 20px;
    font-size: 1rem;
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.2s;
    font-family: 'Press Start 2P', 'Courier New', monospace;
}

.modal-btn:hover {
    background-color: var(--tetris-cyan-light);
    color: #000;
}

/* Milestone Modal */
.milestone-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.milestone-message {
    margin: 20px 0;
    color: #fff;
    font-family: 'VT323', 'Courier New', monospace;
    font-size: 1.5rem;
    text-shadow: 0 0 5px var(--tetris-cyan-light);
}

.milestone-video {
    width: 100%;
    max-width: 400px;
    height: auto;
    margin: 20px auto;
    border: 2px solid var(--tetris-cyan-light);
    box-shadow: 0 0 10px var(--tetris-cyan-light);
    object-fit: contain;
    background-color: #000;
}

@media (max-width: 600px) {
    .welcome-content {
        padding: 15px;
        width: 95%;
    }

    .welcome-content h1 {
        font-size: 2rem;
        margin-bottom: 15px;
    }

    .controls-list {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .desktop-controls, .mobile-controls-info, .scoring {
        padding: 8px;
    }

    .instructions h2 {
        font-size: 1.1rem;
        margin-bottom: 10px;
    }

    .instructions h3 {
        font-size: 0.9rem;
    }

    .instructions li {
        font-size: 0.85rem;
        margin-bottom: 3px;
    }

    .start-btn {
        padding: 8px 25px;
        font-size: 1rem;
    }

    .modal-content {
        padding: 15px;
        width: 95%;
        max-width: 100%;
    }
    
    .modal-content h2 {
        font-size: 1.5rem;
    }
    
    .final-score p {
        font-size: 1rem;
    }
    
    .modal-btn {
        padding: 8px 15px;
        font-size: 0.8rem;
    }

    .milestone-video {
        max-width: 100%;
        margin: 15px auto;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }
    
    .arcade-frame {
        padding: 10px;
    }
    
    .tech-border {
        padding: 10px;
    }
    
    .container {
        padding: 10px;
    }
    
    .game-wrapper {
        padding: 10px;
    }
    
    #game-board {
        width: 100% !important;
        height: auto !important;
    }
    
    .side-panel {
        width: 100%;
    }
    
    .mobile-controls {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .mobile-controls button {
        padding: 12px 5px;
    }
    
    .game-buttons button {
        padding: 8px;
        font-size: 0.7rem;
    }

    .milestone-video {
        margin: 10px auto;
    }
    
    .modal-content {
        padding: 10px;
    }
    
    .milestone-message {
        font-size: 1.2rem;
        margin: 15px 0;
    }
}

/* Mobile styles */
@media (max-width: 900px) {
    body {
        padding: 5px;
    }
    
    .arcade-frame {
        width: 100%;
        max-width: 100%;
        padding: 5px;
    }
    
    .tech-border {
        padding: 5px;
        width: 100%;
    }
    
    .container {
        width: 100%;
        padding: 5px;
        flex-direction: column;
        align-items: center;
    }
    
    .game-wrapper {
        flex-direction: column;
        width: 100%;
        padding: 5px;
        margin-bottom: 0;
    }
    
    .stats-panel {
        display: none;
    }
    
    .welcome-content {
        padding: 12px;
        max-height: 85vh;
    }
    
    .welcome-content h1 {
        font-size: 2.2rem;
    }
    
    .controls-list {
        flex-direction: column;
        gap: 8px;
    }

    .desktop-controls, .mobile-controls-info, .scoring {
        padding: 8px;
        min-width: unset;
    }

    .instructions {
        margin: 8px 0;
    }

    .instructions h2 {
        margin-bottom: 8px;
        font-size: 1.2rem;
    }

    .instructions h3 {
        font-size: 1rem;
    }

    .instructions li {
        margin-bottom: 3px;
        font-size: 0.85rem;
    }
    
    /* Force mobile layout to be completely vertical */
    .game-area {
        position: relative;
        width: 100%;
        flex-direction: column;
        display: block;
    }
    
    /* Move next piece to top of game board */
    .next-piece {
        position: absolute;
        top: 10px;
        right: 10px;
        width: 80px;
        height: 80px;
        z-index: 10;
        background-color: #000;
        border: 2px solid var(--tetris-border);
        padding: 2px;
    }
    
    .next-piece h3 {
        font-size: 0.7rem;
        margin-bottom: 2px;
    }
    
    #next-piece-canvas {
        width: 70px;
        height: 70px;
    }
    
    /* Completely restructure mobile layout */
    #game-board {
        width: 100% !important;
        max-width: 100%;
        height: auto !important;
    }
    
    /* Mobile layout ordering */
    .container {
        display: flex;
        flex-direction: column;
    }
    
    /* 1. Game area at the top */
    .game-wrapper {
        order: 1;
        margin-bottom: 5px;
    }
    
    /* 2. Mobile controls directly below game area */
    .mobile-controls-container {
        display: block;
        order: 2;
        width: 100%;
        margin: 5px 0;
    }
    
    /* 3. Game buttons below mobile controls */
    .controls {
        order: 3;
        width: 100%;
        margin: 5px 0;
    }
    
    /* 4. Score panels at the bottom */
    .side-panel {
        position: static;
        display: flex;
        flex-direction: column;
        width: 100%;
        border: none;
        background: none;
        padding: 0;
        margin-top: 10px;
        min-width: unset;
        order: 4;
    }
    
    /* Mobile controls styling */
    .mobile-controls {
        display: grid;
        grid-template-columns: repeat(6, 1fr);
        gap: 5px;
        background-color: var(--tetris-bg-dark);
        padding: 5px;
        width: 100%;
    }
    
    /* Make score panels full width */
    .lines, .score-container, .level-container {
        width: 100%;
        margin-bottom: 10px;
        box-sizing: border-box;
    }
    
    .mobile-controls button {
        padding: 10px;
        font-size: 1.2rem;
    }
    
    /* Make buttons bigger and more touch-friendly */
    #rotate-left, #rotate-right {
        grid-column: span 1;
    }
    
    #move-left, #move-right {
        grid-column: span 1;
    }
    
    #soft-drop, #hard-drop {
        grid-column: span 1;
    }
}