* {
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f0f0f0;
    margin: 0;
    padding: 15px;
    min-height: 100vh;
    display: block;
    overflow-x: hidden;
}

.header {
    position: static !important;
    margin: 5px 5px 0 5px;
}

.container {
    margin: 10px auto;
    background-color: white;
    border: 2px solid #dadada;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    width: 100%;
    max-width: 800px;
    height: fit-content;
    padding: 15px;
    transform-origin: top center;
}


.section {
    border: 1px solid #ccc;
    border-radius: 5px;
    padding: 15px;
    margin-bottom: 20px;
    background-color: #f9f9f9;
}

.section-title {
    display: inline-flex;
    font-weight: bold;
    margin-top: -5px;
    margin-bottom: 15px;
    padding-bottom: 5px;
    border-bottom: 1px solid #ddd;
    color: #1a3d6d;
    font-size: 1.2rem;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(2, 0.5fr);
    gap: 10px;
    justify-content: center;
    margin-bottom: 10px;
}

.setting-item {
    display: flex;
    align-items: center;
}

.setting-item label {
    flex: 0.5;
    text-align: left;
    padding-right: 8px;
    font-size: 0.9rem;
}

select {
    text-align: center;
    margin: 3px 0 3px 0;
    width: 80px;
    padding: 5px;
    border: 1px solid #ccc;
    border-radius: 4px;
    background-color: white;
}

.marks-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr 1fr;
    gap: 5px;
    margin-bottom: 10px;
    font-size: 0.95rem;
}

.grid-header {
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    padding: 8px 5px;
    border-radius: 10px;
    background-color: #e9ecef;
    border-bottom: 2px solid #ccc;
}


.grid-label {
    padding: 5px;
    font-weight: 500;
    text-align: center;
}

.grid-input {
    padding: 5px;
}

input[type="text"] {
    text-align: center;
    width: 100%;
    padding: 6px;
    border: 1px solid #ccc;
    border-radius: 50px;
    font-size: 0.95rem;
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 10px;
    align-items: center;
    margin-bottom: 15px;
}

.result-item {
    display: flex;
    align-items: center;
}

.result-label {
    flex: 1;
    text-align: left;
    margin-left: 30%;
    padding-right: 10px;
    font-weight: 500;
}

.result-value {
    justify-content: center;
    display: flex;
    align-items: center;
    flex: 1;
    padding: 8px;
    background-color: #6c757d;
    color: white;
    border-radius: 4px;
    min-width: 120px;
    text-align: center;
    margin-right: 30%;
    height: 35px;
}

.calculate-btn {
    margin-top: 6% !important;
    margin-bottom: 0.5% !important;
    background-color: #d3d3d3;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    display: block;
    margin: 0 auto;
    transition: background-color 0.2s;
    font-size: 1rem;
}

.calculate-btn:hover {
    background-color: #c0c0c0;
}

.footer {
    background-color: cyan;
    padding: 5px 10px;
    text-align: center;
    font-style: italic;
    font-weight: bold;
    font-size: 0.9rem;
    border-radius: 4px;
    margin-top: 20px;
}

.sub-header {
    font-weight: bold;
    font-size: 1rem;
    margin: 10px 0 5px 0;
    padding-bottom: 3px;
    border-bottom: 1px solid #eee;
}

.section-label {
    font-weight: bold;
    text-align: center;
    background-color: #e9ecef;
    padding: 5px;
    grid-column: span 2;
}

.percentage-display {
    background-color:rgb(255, 255, 255);
    border: 1px solid rgb(0, 183, 255);
    border-radius: 50px;
    padding: 5px;
    font-weight: bold;
    text-align: center;
    min-width: 80px;
}
.percentage-display:hover {
    cursor: not-allowed;
}

.second-setting-item {
    margin-left: 15px;
}

@media (max-width: 768px) {
    body {
        padding: 8px;
        min-height: 100vh;
        height: auto;
        display: block;
        overflow-x: hidden;
    }
    
    .container {
        transform: scale(0.85);
        transform-origin: top center;
        max-width: 125%;
        width: 125%;
        padding: 12px;
        margin: 0 -45px;
    }
    
    .section-title {
        font-size: 1.15rem;
    }
    
    .setting-item label {
        flex: 1;
        gap: 10px;
        font-size: 0.7rem;
    }
    
    select {
        width: 70px;
        font-size: 0.85rem;
    }
    
    .marks-grid {
        font-size: 0.9rem;
        gap: 4px;
    }
    
    .grid-header {
        padding: 6px 4px;
        font-size: 0.9rem;
    }
    
    .grid-label {
        padding: 4px;
        font-size: 0.7rem;
    }
    
    input[type="text"] {
        padding: 5px;
        font-size: 0.9rem;
    }
    
    .result-grid {
        gap: 8px;
        grid-template-columns: repeat(1, 1fr);

    }
    
    .result-label {
        font-size: 0.95rem;
        margin-left: 20%;
    }
    
    .result-value {
        min-width: 100px;
        padding: 7px;
        font-size: 0.95rem;
        margin-right: 20%;
        height: 25px;
    }
    
    .calculate-btn {
        padding: 9px 18px;
        font-size: 0.95rem;
    }
    
    .footer {
        font-size: 0.85rem;
        padding: 4px 8px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 5px;
    }
    
    .container {
        transform: scale(0.78);
        padding: 10px;
    }
    
    .section-title {
        font-size: 1.1rem;
    }
    
    .setting-item label {
        font-size: 0.7rem;
    }
    
    select {
        width: 65px;
        font-size: 0.8rem;
    }
    
    .marks-grid {
        font-size: 0.85rem;
        gap: 3px;
    }
    
    .grid-header {
        padding: 5px 3px;
        font-size: 0.85rem;
    }
    
    input[type="text"] {
        padding: 4px;
        font-size: 0.85rem;
    }
    
    .result-label, .result-value {
        font-size: 0.9rem;
    }
    
    .calculate-btn {
        font-size: 0.9rem;
        padding: 8px 16px;
    }
    
    .footer {
        font-size: 0.8rem;
    }
}