body { 
    background-color: #1E293B; 
    color: white; 
    font-family: Arial, sans-serif; 
    margin: 0;
    padding: 0;
}




.navbar {
    display: flex;
    justify-content: space-between; 
    align-items: center;            
    padding: 20px 40px;             
    background-color: #0f172a;      
    border-bottom: 1px solid #334155;
}


.navbar .logo {
    margin: 0;                      
    font-size: 24px;
}


.nav-links {
    display: flex;
    gap: 15px;                      
}


.nav-btn {
    text-decoration: none;
    color: white;
    background-color: #334155;      
    padding: 12px 24px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer; 
    border-radius: 8px;
    transition: background-color 0.2s ease;
}


.nav-btn:hover {
    background-color: #475569;
}




.content-body {
    text-align: center;
    padding: 40px 20px;
}


.donation-text {
    font-size: 18px;
    color: #cbd5e1;
}




.page-container {
    width: 90%;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    padding: 60px 20px;
}


.page-container h1 {
    margin-bottom: 10px;
}


.page-container p {
    color: #cbd5e1;
}




.home-btn {
    background-color: #334155;
    color: white;
    border: none;
    padding: 10px 20px;
    margin-top: 20px;
    border-radius: 8px;
    font-size: 15px;
    cursor: pointer;
}


.home-btn:hover {
    background-color: #475569;
}




.game-card { 
    background-color: #1f2937; 
    width: 250px; 
    padding: 25px; 
    margin: 40px auto; 
    border-radius: 12px;
    border: 1px solid #334155;
}


.game-card h2 {
    margin-top: 0;
}


.game-card p {
    color: #cbd5e1;
}


.open-btn {
    background-color: #334155;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 15px;
}


.open-btn:hover {
    background-color: #475569;
}




.notes-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 40px;
}


#notebox { 
    width: 100%;
    max-width: 600px;
    height: 250px;
    padding: 15px; 
    font-size: 16px;
    font-family: Arial, sans-serif;
    border-radius: 10px;
    border: 1px solid #334155;
    box-sizing: border-box;
    resize: vertical;
}


.save-btn {
    background-color: #334155;
    color: white;
    border: none;
    padding: 10px 20px;
    margin-top: 15px;
    border-radius: 8px;
    font-size: 15px;
    cursor: pointer;
}


.save-btn:hover {
    background-color: #475569;
}




.construction-text {
    margin-bottom: 10px;
}

.tools-grid {
    display: flex;
    justify-content: center;
    gap: 25px;
    flex-wrap: wrap;
    margin-top: 40px;
}


.tool-card {
    background-color: #1f2937;
    width: 250px;
    padding: 25px;
    border-radius: 12px;
    border: 1px solid #334155;
    box-sizing: border-box;
}


.tool-card h2 {
    margin-top: 0;
}


.tool-card p {
    color: #cbd5e1;
    min-height: 45px;
}


.calculator {
    background-color: #1f2937;
    width: 300px;
    padding: 20px;
    margin: 40px auto;
    border-radius: 12px;
    border: 1px solid #334155;
}


#display {
    width: 100%;
    height: 55px;
    box-sizing: border-box;
    margin-bottom: 15px;
    padding: 10px;
    font-size: 24px;
    text-align: right;
    border-radius: 8px;
    border: none;
}


.calculator-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}


.calculator-buttons button {
    height: 55px;
    font-size: 18px;
    background-color: #334155;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}


.calculator-buttons button:hover {
    background-color: #475569;
}


.zero-button {
    grid-column: span 2;
}




.converter-card {
    background-color: #1f2937;
    width: 350px;
    max-width: 100%;
    padding: 25px;
    margin: 40px auto;
    border-radius: 12px;
    border: 1px solid #334155;
    box-sizing: border-box;
}


.converter-card label {
    display: block;
    text-align: left;
    margin-top: 15px;
    margin-bottom: 6px;
}


.converter-card input,
.converter-card select {
    width: 100%;
    box-sizing: border-box;
    padding: 10px;
    font-size: 16px;
    border-radius: 8px;
    border: none;
}


.converter-card .open-btn {
    margin-top: 20px;
}


#conversionResult {
    margin-top: 20px;
    padding: 15px;
    background-color: #334155;
    border-radius: 8px;
}
.footer {
    position: fixed;
    bottom: 10px;
    left: 15px;
    color: #888;
    font-size: 13px;
}

.footer p {
    margin: 3px;
}
.games-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    padding: 40px;
}

.game-box {
    background: #1e1e1e;
    border: 1px solid #444;
    border-radius: 12px;
    padding: 25px;
    text-align: center;
    min-height: 180px;
}

.game-box h2 {
    margin-top: 0;
}

.game-box p {
    color: #aaa;
    margin-bottom: 25px;
}

.play-btn {
    display: inline-block;
    padding: 10px 25px;
    background: #333;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    transition: 0.2s;
}

.play-btn:hover {
    background: #555;
}
.snake-container {
    text-align: center;
    margin-top: 40px;
}

#gameCanvas {
    border: 3px solid white;
    background-color: #111;
}

#startButton {
    padding: 12px 25px;
    font-size: 16px;
    cursor: pointer;
}
.hero {
    text-align: center;
    margin-top: 70px;
    margin-bottom: 50px;
}
.hero h1 {
    font-size: 45px;
}
.hero p {
    font-size:18px;
}
.game-page {
    width: 95%;
    height: 75vh;
    margin: 20px auto;
}

.game-frame {
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 10px;
}