/* General body styling */
body {
    background: #f0f4f8;
    background-image: linear-gradient(to bottom right, #d0e1f9, #e1ebf9);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
}

.block-container {
    padding: 2.5rem 5rem 3rem 5rem;
}

/* Main header styling */
.main-header {
    font-size: 2.5em;
    font-weight: bold;
    color: #1565C0;
    margin-bottom: 20px;
    text-align: center;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    padding-top: 10px;
}

/* Sub-header styling */
.sub-header {
    font-size: 1.75em;
    font-weight: bold;
    color: #1976D2;
    margin-top: 20px;
    margin-bottom: 10px;
    text-align: center;
}

/* Navigation tabs styling */
.stTabs [role="tab"] {
    font-size: 18px;
    font-weight: bold;
    color: white;
    background: #1565C0;
    padding: 6px 10px;
    margin: 5px;
    border-radius: 8px;
    border: 2px solid #ddd;
    transition: background 0.3s ease, padding 0.3s ease;
}

.stTabs [role="tab"]:hover {
    background: #1976D2;
}

.stTabs [role="tab"][aria-selected="true"] {
    background: #E3F2FD;
    color: #333;
    border: 2px solid #1565C0;
    font-weight: bold;
}

/* Sidebar header styling */
.sidebar-header {
    font-size: 1.5em;
    font-weight: bold;
    color: #333;
    margin-bottom: 20px;
}

/* Sidebar option styling */
.sidebar-option {
    margin-bottom: 10px;
    font-size: 1.5em;
    color: #1565C0;
    cursor: pointer;
    transition: color 0.3s ease;
}

.sidebar-option:hover {
    color: #1976D2;
}

/* Content section styling */
.content-section {
    padding: 20px;
    margin-bottom: 30px;
    border-radius: 10px;
    box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.1);
    background-color: #ffffff;
}


/* Custom button styling */
div.stButton > button:first-child {
    background: #1565C0;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 10px 2px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.2);
    font-weight: bold;
}

div.stButton > button:hover:first-child {
    background-color: #1976A2;
    box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
}

/* Scrollbar styling */
::-webkit-scrollbar-track {
    background: #e1ebf9;
}

::-webkit-scrollbar-thumb {
    background-color: #90CAF9;
    border-radius: 10px;
    border: 3px solid #e1ebf9;
}

::-webkit-scrollbar-thumb:hover {
    background: #64B5F6;
}

::-webkit-scrollbar {
    width: 16px;
}

/* Radio button group styling */
div.row-widget.stRadio > div {
    flex-direction: row;
    align-items: stretch;
}

div.row-widget.stRadio > div[role="radiogroup"] > label[data-baseweb="radio"] {
    background-color: #BBDEFB;
    padding-right: 10px;
    padding-left: 4px;
    padding-bottom: 3px;
    margin: 4px;
}

/* Radio wrapper styling */
.radio-wrapper {
    border: 2px solid #1565C0;
    border-radius: 5px;
    padding: 15px;
    margin: 10px 0;
    background-color: #f9f9f9;
}

/* Content title styling */
.content-title {
    font-size: 1.5em;
    font-weight: bold;
    margin-bottom: 10px;
    color: #333;
}

/* Audio player styling */
audio::-webkit-media-controls-panel,
audio::-webkit-media-controls-enclosure {
    background-color: #532b5a;
}

audio::-webkit-media-controls-time-remaining-display,
audio::-webkit-media-controls-current-time-display {
    color: white;
    text-shadow: none;
}

audio::-webkit-media-controls-timeline {
    background-color: #532b5a;
    border-radius: 25px;
    margin-left: 10px;
    margin-right: 10px;
}

/* Select input styling */
.stSelectbox > div[data-baseweb="select"] > div {
    padding: -1px;
    margin: 2px 0;
    border: 3px solid #1565C0;
    background-color: #ffc10794;
    font-size: 16px;
    font-weight: bold;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    appearance: none;
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 10px;
}

select:focus {
    border-color: #1565C0;
    box-shadow: 0 0 5px rgba(21, 101, 192, 0.5);
}

select option {
    padding: 10px;
}