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/* Custom styles for the application */
body {
    font-family: 'Arial', sans-serif;
    color: #FFFFFF;
    background-color: #181818;
}

/* Button styling */
.stButton>button {
    min-width: 40px !important;
    height: 30px !important;
    padding: 2px 8px !important;
    margin: 2px !important;
    background-color: #2D5BE3;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 14px;
    font-weight: bold;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.stButton>button:hover {
    background-color: #3DDC84;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

/* Input field styling */
.stTextInput>div>div>input {
    border-radius: 5px;
    border: 2px solid #2D5BE3;
    padding: 0.5rem;
    background-color: #242424;
    color: #FFFFFF;
    font-weight: 500;
}

.stTextInput>div>div>input:focus {
    border-color: #FFDD44;
    box-shadow: 0 0 0 2px rgba(255, 221, 68, 0.2);
}

/* Sidebar styling */
.sidebar .sidebar-content {
    background-color: #242424;
    padding: 1rem;
    border-right: 2px solid #2D5BE3;
}

/* Solution display styling */
.stExpander {
    background-color: #242424;
    border-radius: 8px;
    margin-bottom: 10px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
    border: 1px solid #3DDC84;
}

/* Plot container styling */
.plot-container {
    background-color: #242424;
    border-radius: 8px;
    padding: 1rem;
    margin: 1rem 0;
    border: 1px solid #2D5BE3;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

/* Solution steps styling */
.solution-step {
    background-color: #242424;
    padding: 1rem;
    margin: 0.75rem 0;
    border-radius: 6px;
    border-left: 4px solid #3DDC84;
}

/* Mathematical symbols grid */
.math-symbols-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 4px;
    margin: 10px 0;
}

/* Headers styling */
h1, h2, h3 {
    color: #FFFFFF;
    font-weight: bold;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

/* Interactive elements */
.stSelectbox select,
.stMultiSelect select {
    background-color: #242424;
    color: #FFFFFF;
    border: 2px solid #2D5BE3;
}

/* Radio buttons and checkboxes */
.stRadio > div {
    border-radius: 6px;
    padding: 0.5rem;
    background-color: #242424;
}

.stRadio label {
    color: #FFFFFF !important;
}

.stRadio label:hover {
    color: #FFDD44 !important;
}

/* Tabs */
.stTabs {
    background-color: #242424;
    border-radius: 8px;
    padding: 1rem;
    margin: 1rem 0;
}

/* Success/Info messages */
.stSuccess, .stInfo {
    background-color: #3DDC84;
    color: #181818;
    font-weight: bold;
    border-radius: 6px;
    padding: 0.75rem;
}

/* Error messages */
.stError {
    background-color: #FF4444;
    color: #FFFFFF;
    font-weight: bold;
    border-radius: 6px;
    padding: 0.75rem;
}

/* Responsive design */
@media (max-width: 768px) {
    .stButton>button {
        min-width: 30px !important;
        height: 25px !important;
        padding: 1px 6px !important;
        font-size: 12px;
    }

    .stTextInput>div>div>input {
        font-size: 16px;
    }
}