:root {
    --matrix-green: #00ff41;
    --dark-green: #008f11;
    --black: #0d0208;
    --darker-black: #030a07;
    --error-red: #ff0038;
    --warning: #ff8c00;
    --cyber-blue: #00b4ff;
    --cyber-purple: #bd00ff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Courier New', monospace;
}

body {
    background-color: var(--black);
    color: var(--matrix-green);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(0, 255, 65, 0.03) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(0, 180, 255, 0.03) 0%, transparent 20%);
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1rem;
    flex: 1;
    position: relative;
    z-index: 2;
}

.scanlines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(0, 255, 65, 0.03) 0%,
        rgba(0, 255, 65, 0.08) 50%,
        rgba(0, 255, 65, 0.03) 100%
    );
    background-size: 100% 4px;
    pointer-events: none;
    z-index: 1;
}

.glitch-effect {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(0deg, transparent 45%, rgba(0, 255, 65, 0.1) 45%, rgba(0, 255, 65, 0.1) 55%, transparent 55%),
        linear-gradient(90deg, transparent 45%, rgba(0, 255, 65, 0.1) 45%, rgba(0, 255, 65, 0.1) 55%, transparent 55%);
    background-size: 0.5em 0.5em;
    pointer-events: none;
    z-index: 1;
    opacity: 0.1;
    animation: glitchEffect 3s infinite alternate;
}

.header {
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
    padding: 1rem;
    border: 1px solid var(--dark-green);
    box-shadow: 0 0 15px rgba(0, 255, 65, 0.2);
    background: linear-gradient(to right, rgba(0, 143, 17, 0.1), rgba(0, 13, 8, 0.8));
}

.title {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--matrix-green);
    margin-bottom: 0.5rem;
    text-shadow: 0 0 10px var(--matrix-green);
    letter-spacing: 3px;
    position: relative;
}

.title::after {
    content: "_";
    animation: blink 1s step-end infinite;
    position: absolute;
}

.subtitle {
    font-size: 1rem;
    color: var(--dark-green);
    letter-spacing: 1px;
}

.btn {
    display: block;
    width: 100%;
    padding: 0.8rem;
    margin: 0.5rem 0;
    background-color: rgba(0, 13, 8, 0.5);
    color: var(--matrix-green);
    border: 1px solid var(--dark-green);
    border-radius: 0;
    font-size: 1rem;
    font-weight: normal;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 65, 0.2), transparent);
    transition: 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    background-color: rgba(0, 255, 65, 0.1);
    border-color: var(--matrix-green);
    text-shadow: 0 0 5px var(--matrix-green);
    box-shadow: 0 0 10px rgba(0, 255, 65, 0.3);
}

.btn-danger {
    color: var(--error-red);
    border-color: var(--error-red);
}

.btn-danger:hover {
    background-color: rgba(255, 0, 56, 0.1);
    text-shadow: 0 0 5px var(--error-red);
    box-shadow: 0 0 10px rgba(255, 0, 56, 0.3);
}

.btn-warning {
    color: var(--warning);
    border-color: var(--warning);
}

.btn-warning:hover {
    background-color: rgba(255, 140, 0, 0.1);
    text-shadow: 0 0 5px var(--warning);
    box-shadow: 0 0 10px rgba(255, 140, 0, 0.3);
}

.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding: 0.8rem;
    border: 1px solid var(--dark-green);
    background-color: rgba(0, 13, 8, 0.3);
    box-shadow: 0 0 10px rgba(0, 255, 65, 0.1);
}

.game-header h2 {
    font-size: 1rem;
    color: var(--matrix-green);
    letter-spacing: 1px;
}

.score {
    font-size: 0.9rem;
    color: var(--dark-green);
    letter-spacing: 1px;
}

.word-display {
    font-size: 2.5rem;
    font-family: 'Courier New', monospace;
    font-weight: bold;
    color: var(--matrix-green);
    text-align: center;
    margin: 2rem 0;
    min-height: 4.5rem;
    padding: 1.5rem;
    border: 1px solid var(--dark-green);
    text-shadow: 0 0 10px var(--matrix-green);
    background-color: rgba(0, 13, 8, 0.3);
    box-shadow: 0 0 15px rgba(0, 255, 65, 0.1);
    position: relative;
    overflow: hidden;
}

.word-display::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(120deg, 
        transparent, 
        rgba(0, 255, 65, 0.1), 
        transparent);
    animation: shine 3s infinite;
}

.input-field {
    width: 100%;
    padding: 1.2rem;
    font-size: 1.5rem;
    font-family: 'Courier New', monospace;
    text-align: center;
    background-color: rgba(0, 13, 8, 0.5);
    color: var(--matrix-green);
    border: 1px solid var(--dark-green);
    outline: none;
    margin: 1.5rem 0;
    letter-spacing: 2px;
    box-shadow: 0 0 10px rgba(0, 255, 65, 0.1);
    transition: all 0.3s ease;
}

.input-field:focus {
    border-color: var(--matrix-green);
    box-shadow: 0 0 15px var(--matrix-green);
    background-color: rgba(0, 13, 8, 0.7);
}

.status {
    text-align: center;
    margin: 1.5rem 0;
    min-height: 1.5rem;
    font-size: 0.9rem;
    color: var(--dark-green);
    letter-spacing: 1px;
    padding: 0.8rem;
    border: 1px solid var(--dark-green);
    background-color: rgba(0, 13, 8, 0.3);
}

.progress-container {
    width: 100%;
    height: 8px;
    background-color: var(--darker-black);
    border: 1px solid var(--dark-green);
    overflow: hidden;
    margin: 2rem 0;
    box-shadow: 0 0 10px rgba(0, 255, 65, 0.1);
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--dark-green), var(--matrix-green));
    width: 0%;
    transition: width 0.3s ease;
    position: relative;
}

.progress-bar::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(255, 255, 255, 0.2), 
        transparent);
    animation: shine 2s infinite;
}

.progress-bar.error {
    background: linear-gradient(90deg, var(--error-red), #ff0038);
}

.results {
    text-align: center;
    margin: 2rem 0;
    padding: 2rem;
    border: 1px solid var(--dark-green);
    background-color: rgba(0, 13, 8, 0.3);
    box-shadow: 0 0 15px rgba(0, 255, 65, 0.1);
}

.results h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--matrix-green);
    text-shadow: 0 0 10px var(--matrix-green);
    letter-spacing: 2px;
}

.results p {
    font-size: 1.1rem;
    margin: 1rem 0;
    color: var(--dark-green);
    letter-spacing: 1px;
}

.results .highlight {
    color: var(--matrix-green);
    font-weight: bold;
    text-shadow: 0 0 5px var(--matrix-green);
}

.btn-group {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

.btn-group .btn {
    width: auto;
    padding: 0.8rem 1.5rem;
    flex: 1;
}

.correct {
    color: var(--matrix-green) !important;
    text-shadow: 0 0 15px var(--matrix-green);
    animation: pulse 0.5s;
}

.incorrect {
    color: var(--error-red) !important;
    text-shadow: 0 0 15px var(--error-red);
    animation: shake 0.5s;
}

.mode-selection {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 0.8rem;
    margin-bottom: 1.5rem;
}

.mode-btn {
    position: relative;
    overflow: hidden;
}

.mode-btn::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--matrix-green);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.mode-btn:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.terminal-effect {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 255, 65, 0.05),
        rgba(0, 255, 65, 0.05) 1px,
        transparent 1px,
        transparent 2px
    );
    pointer-events: none;
    z-index: 0;
    animation: scrollEffect 100s linear infinite;
}

/* Animations */
@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

@keyframes glitch {
    0% { text-shadow: 0.05em 0 0 rgba(255, 0, 0, 0.75), -0.05em -0.025em 0 rgba(0, 255, 0, 0.75), -0.025em 0.05em 0 rgba(0, 0, 255, 0.75); }
    14% { text-shadow: 0.05em 0 0 rgba(255, 0, 0, 0.75), -0.05em -0.025em 0 rgba(0, 255, 0, 0.75), -0.025em 0.05em 0 rgba(0, 0, 255, 0.75); }
    15% { text-shadow: -0.05em -0.025em 0 rgba(255, 0, 0, 0.75), 0.025em 0.025em 0 rgba(0, 255, 0, 0.75), -0.05em -0.05em 0 rgba(0, 0, 255, 0.75); }
    49% { text-shadow: -0.05em -0.025em 0 rgba(255, 0, 0, 0.75), 0.025em 0.025em 0 rgba(0, 255, 0, 0.75), -0.05em -0.05em 0 rgba(0, 0, 255, 0.75); }
    50% { text-shadow: 0.025em 0.05em 0 rgba(255, 0, 0, 0.75), 0.05em 0 0 rgba(0, 255, 0, 0.75), 0 -0.05em 0 rgba(0, 0, 255, 0.75); }
    99% { text-shadow: 0.025em 0.05em 0 rgba(255, 0, 0, 0.75), 0.05em 0 0 rgba(0, 255, 0, 0.75), 0 -0.05em 0 rgba(0, 0, 255, 0.75); }
    100% { text-shadow: -0.025em 0 0 rgba(255, 0, 0, 0.75), -0.025em -0.025em 0 rgba(0, 255, 0, 0.75), -0.025em -0.05em 0 rgba(0, 0, 255, 0.75); }
}

@keyframes glitchEffect {
    0% { opacity: 0.1; transform: translate(0); }
    20% { opacity: 0.15; transform: translate(-2px, 2px); }
    40% { opacity: 0.1; transform: translate(-2px, -2px); }
    60% { opacity: 0.15; transform: translate(2px, 2px); }
    80% { opacity: 0.1; transform: translate(2px, -2px); }
    100% { opacity: 0.15; transform: translate(0); }
}

@keyframes shine {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

@keyframes scrollEffect {
    from { background-position: 0 0; }
    to { background-position: 0 100%; }
}

/* Responsive styles */
@media (max-width: 768px) {
    .container {
        padding: 1.5rem 0.8rem;
    }
    
    .title {
        font-size: 2rem;
    }
    
    .word-display {
        font-size: 2rem;
        padding: 1rem;
    }
    
    .btn-group {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .btn-group .btn {
        width: 100%;
    }
    
    .mode-selection {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .title {
        font-size: 1.8rem;
    }
    
    .word-display {
        font-size: 1.5rem;
    }
    
    .input-field {
        font-size: 1.2rem;
        padding: 1rem;
    }
    
    .game-header {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
}
.footer {
    text-align: center;
    margin-top: 10px; 
    font-family: 'Courier New', Courier, monospace;
    position: relative;
    top: -30px; 
    position: relative;
    z-index: 10;
}

.highlight-link {
    color: #00cc00;
    text-decoration: none;
    font-weight: bold;
    margin: 0 5px;
}

.highlight-link:hover {
    color: #00ff00;
    text-shadow: 0 0 5px #00ff00;
}