src/style.css

/* style.css */

:root {
    --primary-color: #4CAF50; /* سبز */
    --secondary-color: #2196F3; /* آبی */
    --accent-color: #FFC107; /* زرد */
    --background-color: #2A70FC; /* خاکستری روشن */
    --text-color: #333;
    --header-color: #1a1a1a;
    --card-background: #ffffff;
    --border-color: #00FFFF;
}

body {
    direction: rtl;
    text-align: right;
    font-family: 'Vazirmatn', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    direction: rtl;
    text-align: right;
    color: var(--header-color);
    margin-top: 1em;
    margin-bottom: 0.5em;
}

.stApp {
    direction: rtl;
    text-align: right;
}

/* Sidebar */
.st-emotion-cache-18ni7ap { /* Streamlit sidebar class */
    direction: rtl;
    text-align: right;
    background-color: var(--card-background);
    padding: 1rem;
    border-left: 1px solid var(--border-color);
}

/* Download Button */
.stDownloadButton > button {
    width: 100%;
    direction: rtl;
    text-align: center;
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.stDownloadButton > button:hover {
    background-color: #43A047; /* Darker green */
}

/* DataFrames */
.stDataFrame {
    direction: rtl;
    text-align: right;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(5 26 57 / 0.12);
}

/* Plotly Charts */
.stPlotlyChart {
    direction: rtl;
    text-align: right;
    background-color: var(--card-background);
    padding: 1rem;
    border-radius: 0.5rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    margin-bottom: 1rem;
}

/* Main Title */
.st-emotion-cache-10trblm.e1nzilvr1 { /* Specific class for h1 title */
    text-align: right;
    width: 100%;
    color: var(--primary-color);
    font-size: 2.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

/* File Uploader */
.stFileUploader {
    direction: rtl;
    text-align: right;
    background-color: var(--card-background);
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px dashed var(--border-color);
}

/* Error Messages */
.st-emotion-cache-10qg050 { /* Streamlit error message class */
    direction: rtl;
    text-align: right;
    background-color: #ffebee; /* Light red */
    color: #D32F2F; /* Darker red */
    border-radius: 0.5rem;
    padding: 1rem;
    border: 1px solid #EF9A9A;
}

/* Normal Text */
.st-emotion-cache-zq5wmm { /* Streamlit text class */
    direction: rtl;
    text-align: right;
}

/* Markdown */
.st-emotion-cache-1c7y2kd { /* Streamlit markdown class */
    direction: rtl;
    text-align: right;
}

/* Subheader */
.st-emotion-cache-10trblm.e1nzilvr5 { /* Specific class for subheaders */
    direction: rtl;
    text-align: right;
    color: var(--secondary-color);
    font-size: 1.75rem;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

/* Tabs */
.st-emotion-cache-10trblm.e1nzilvr4 { /* Streamlit tabs container */
    direction: rtl;
    text-align: right;
    background-color: var(--card-background);
    border-radius: 0.5rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    padding: 1rem;
}

.st-emotion-cache-10trblm.e1nzilvr4 button { /* Individual tab buttons */
    color: var(--text-color);
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    margin: 0.25rem;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
}

.st-emotion-cache-10trblm.e1nzilvr4 button:hover {
    background-color: var(--border-color);
    color: var(--header-color);
}

.st-emotion-cache-10trblm.e1nzilvr4 button[aria-selected="true"] {
    background-color: var(--secondary-color);
    color: white;
    border-color: var(--secondary-color);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    h2 {
        font-size: 1.5rem;
    }
    .st-emotion-cache-18ni7ap { /* Sidebar */
        padding: 0.5rem;
    }
    .stDownloadButton > button {
        padding: 0.5rem 0.75rem;
        font-size: 0.9rem;
    }
    .stPlotlyChart, .stDataFrame, .stFileUploader {
        padding: 0.75rem;
        margin-bottom: 0.75rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.75rem;
    }
    h2 {
        font-size: 1.25rem;
    }
    .st-emotion-cache-10trblm.e1nzilvr4 button { /* Tab buttons */
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }
}