@font-face {
    font-family: 'Amadi Demo';
    src: url('fonts/AmadiDemo-Regular.woff2') format('woff2'),
        url('fonts/AmadiDemo-Regular.woff') format('woff'),
        url('fonts/Amadi-Regular.otf') format('opentype');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Brogi FREE';
    src: url('fonts/BrogiFREE.woff2') format('woff2'),
        url('fonts/BrogiFREE.woff') format('woff');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

:root {
/*default*/  
    --text-color: white;
    --secondary-text-color: #dee2ec;
    --bg-color: #0c1e35;
    --secondary-bg-color: #0b1a2c;
    --border-color: rgba(83, 93, 125, 0.3);
    --accent-color: #76c1d7;
    --sidebar-header-height: 100px;
    --sidebar-footer-height: 100px;
}

/* Light theme variables */
[data-theme="light"] {
    --text-color: black;
    --secondary-text-color: #1a1f25;
    --bg-color: #f0f2f5;
    --secondary-bg-color: #e0e2e5;
    --border-color: rgba(83, 93, 125, 0.2);
    --accent-color: #76c1d7;
}

/* Dark theme variables */
[data-theme="dark"] {
    --text-color: white;
    --secondary-text-color: white;
    --bg-color: #121212;
    --secondary-bg-color: #1e1e1e;
    --border-color: rgba(255, 255, 255, 0.1);
    --accent-color: #76c1d7;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Poppins', sans-serif;
    color: var(--text-color);
    font-size: 0.9rem;
    transition: background-color 0.3s ease;
    background-color: #f4f7fa;
}

a {
    text-decoration: none;
    color: var(--text-color);
}

.layout {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin-left: 260px;
    transition: margin-left 0.3s ease;
}

.layout.sidebar-collapsed {
    margin-left: 60px;
}

.header { 
    grid-area: header;
    background-color: rgb(112, 180, 209); 
    height: 150px; 
    position: relative;
    margin-bottom: 30px;
    font-size: 20px;
 }

 .header h1 {
    font-family: 'Amadi Demo', sans-serif;
    font-size: 100px;
    text-align:center;
    margin: 50px auto;   
    display: block;  
    position: absolute;    
}

/*Rectal Cancer Survival Calculator*/
.header h3 {
    font-weight: bold;
    font-family: 'Times New Roman', Times, serif;
    top: 200px;
    margin-left: 40px;
    position:absolute;
    display: block;
    color: black;
    font-size: 30px;
     
}

/*STUDY GROUP*/
.header h5 {
    font-weight: bold;
    font-family: 'Times New Roman', Times, serif;
    font-size: 25px;
    margin: 120px auto auto 425px;
    text-align: center;
    display: block;
    position: absolute;
}


.main {
    padding: 20px;
    flex-grow: 1;

}



.form-container {
    background-color: #ffffff;
    width: 95%;
    margin: 40px 20px auto 20px; 
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    margin-top: 50px;
    clear: both; 
    
}

.etichette_variabili {
    font-weight: bold;
    font-family: Brogi FREE, sans-serif;
    font-size: 25px;
}


.etichette_variabili label {
    font-weight: 600;
    color: #0c1e35;
    margin-bottom: 5px;
}

.etichette_variabili select {
    padding: 8px;
    border-radius: 4px;
    border: 1px solid #d1d5db;
    background-color: #f9fafb;
    font-size: 0.9rem;
}

.etichette_variabili hr {
    border: none;
    border-top: 1px solid #e5e7eb;
    margin: 10px 0;
}

.etichette_variabili button {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    align-self: flex-start;
    transition: background-color 0.3s;
}

.etichette_variabili button:hover {
    background-color: #76c1d7;
}

#results {
    font-size: 20px;
    font-family: 'Times New Roman', Times, serif;
    max-width: 500px;
    left: 2rem;
    margin: 0 auto;
    padding: 15px;
    background-color: #f0f2f5;
    border-radius: 8px;
    color: black;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Footer styling */
footer {
    background-color: white;
    padding: 20px;
    text-align: center;
    border-top: 1px solid #e0e0e0;
    margin-left: 260px;
    transition: margin-left 0.3s ease;
    color: black;
}

footer.sidebar-collapsed {
    margin-left: 60px;
}

footer a {
    color: var(--accent-color);
}

/* Toggle button styling */
.toggle-btn {
    position: fixed;
    left: 270px;
    top: 20px;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5em;
    cursor: pointer;
    transition: all 0.3s;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.toggle-btn.collapsed {
    left: 70px;
}

/* Sidebar styling */
.sidebar {
    width: 260px;
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: all 0.3s;
    z-index: 999;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.1);
    padding-top: 20px;
}

.sidebar.collapsed {
    width: 60px;
    overflow: visible;
}

/* Dropdown container DATA */
.dropdown-container {
    position: relative;
    margin-bottom: 20px;
    padding: 0 20px;
}

.dropdown-btn {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 12px 10px;
    background-color: var(--secondary-bg-color);
    color: var(--secondary-text-color);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-align: left;
    font-size: 16px;
    transition: all 0.3s;
}

.dropdown-btn:hover {
    background-color: rgba(255, 129, 0, 0.1);
}

.sidebar.collapsed .dropdown-btn {
    padding: 12px 5px;
    justify-content: center;
}

.sidebar.collapsed .dropdown-btn span {
    display: none;
}

.dropdown {
    display: none;
    background-color: var(--secondary-bg-color);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 5px;
    max-height: 300px;
    overflow-y: auto;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.dropdown a {
    display: block;
    padding: 10px;
    color: var(--text-color);
    transition: all 0.3s;
}

.dropdown a:hover {
    background-color: rgba(255, 129, 0, 0.1);
    color: var(--secondary-text-color);
}

.sidebar.collapsed .dropdown {
    position: absolute;
    left: 60px;
    top: 0;
    width: 250px;
    z-index: 1000;
}

/* Sidebar links */
.sidebar a:not(.dropdown a) {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: var(--text-color);
    transition: all 0.3s;
    white-space: nowrap;
}

.sidebar a:not(.dropdown a):hover {
    background-color: rgba(255, 129, 0, 0.1);
    color: var(--secondary-text-color);
}

.sidebar.collapsed a:not(.dropdown a) {
    padding: 12px 0;
    justify-content: center;
}

.sidebar.collapsed a:not(.dropdown a) span {
    display: none;
}

/* opzioni dropdown REFERENCES*/
.dropdown-container {
    position: relative;
    margin-bottom: 20px;
    padding: 0 20px;
}

.dropdown-btn {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 12px 10px;
    background-color: var(--secondary-bg-color);
    color: var(--secondary-text-color);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-align: left;
    font-size: 16px;
    transition: all 0.3s;
}

.dropdown-btn:hover {
    background-color: rgba(255, 129, 0, 0.1);
}

.dropdown {
    display: none;
    background-color: var(--secondary-bg-color);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 5px;
    max-height: 300px;
    overflow-y: auto;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.dropdown a {
    display: block;
    padding: 10px;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.3s;
}

.dropdown a:hover {
    background-color: rgba(255, 129, 0, 0.1);
    color: var(--secondary-text-color);
}


/* Theme options */
.theme-options {
    padding: 0 20px;
    margin-top: auto;
    margin-bottom: 20px;
}

.color-scheme {
    display: flex;
    align-items: center;
    background-color: var(--secondary-bg-color);
    padding: 10px;
    border-radius: 4px;
}

.color-scheme label {
    margin-right: 10px;
    white-space: nowrap;
}

.color-scheme select {
    flex: 1;
    padding: 5px;
    border-radius: 3px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-color);
}

.sidebar.collapsed .theme-options {
    display: none;
}

/* Scrollbar styling */
.sidebar::-webkit-scrollbar {
    width: 6px;
    background-color: var(--bg-color);
}

.sidebar::-webkit-scrollbar-thumb {
    border-radius: 4px;
    background-color: rgba(255, 255, 255, 0.1);
}

.sidebar:hover::-webkit-scrollbar-thumb {
    background-color: rgba(255, 255, 255, 0.2);
}

.dropdown::-webkit-scrollbar {
    width: 4px;
    background-color: var(--secondary-bg-color);
}

.dropdown::-webkit-scrollbar-thumb {
    border-radius: 4px;
    background-color: rgba(255, 255, 255, 0.1);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .layout, footer {
        margin-left: 0;
    }
    
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.mobile-visible {
        transform: translateX(0);
    }
    
    .toggle-btn {
        left: 20px;
    }
    
    .toggle-btn.sidebar-visible {
        left: 270px;
    }
}

.butt_home_page:hover {
    background-color: #2a5885 !important;
    color: white !important;
}

.materials {
    margin-left: 15px;
}

.home-link {
    text-decoration: none;
    background-color: white;
    color: #2a5885;
    font-weight: bold;
    padding: 10px;
    border: 1px solid #2a5885;
    border-radius: 5px;
    display: flex;
    transition: background-color 0.3s, color 0.3s;
    font-family: 'Times New Roman', Times, serif;
    font-size: 16px;
    margin-left: 40px; 
    max-width: 125px;
    left: 2rem;
    
}

.home-link:hover {
    background-color: #2a5885 !important;
    color: white !important;
}