@font-face {
    font-family: 'Futura PT';
    /* Prefer the installed/local font; include common local name variations */
    src: local('Futura PT'), local('FuturaPT'), local('Futura PT Book'), local('FuturaPT-Book');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Futura PT';
    src: local('Futura PT Bold'), local('FuturaPT-Bold'), local('Futura PT Heavy');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

body {
    font-family: 'Futura PT', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 100px 300px 300px; /* top 100px, left/right 300px, bottom 300px */
    font-weight: 300; /* lighter overall font weight */
    background-color: #ffffff; /* CHANGED */
    color: #333;
}

/* Responsive: reduce margins on small screens */
@media (max-width: 600px) {
    body {
        padding: 20px;
    }
}

.container {
    max-width: 800px;
    margin: auto;
    padding: 0 20px;
}

/* =============================================================== */
/* PROFILE HEADER STYLES                                           */
/* =============================================================== */
.profile-header {
    text-align: center;
    margin-bottom: 40px;
    padding-top: 20px; /* add space above profile photo */
}

.profile-pic {
    width: 100%;
    height: auto; /* keep aspect ratio */
    display: block; /* avoid inline gap */
    object-fit: cover;
    margin-bottom: 20px;
}

.intro-text {
    font-size: 1.1em;
    max-width: 600px;
    margin: 0; /* align to left within the container */
    text-align: left;
}


/* =============================================================== */
/* COLLAPSIBLE ACCORDION STYLES                                    */
/* =============================================================== */
.collapsible {
    /* --- CHANGED --- */
    background-color: #ffffff; /* White background */
    color: #333;               /* Dark text color */
    
    cursor: pointer;
    padding: 18px 18px 18px 0; /* remove left padding so text aligns with container */
    width: 100%;
    border: 0px solid #ddd;     /* Added a light border for definition */
    border-radius: 0px;         /* Slightly rounded corners */
    text-align: left;
    outline: none;
    font-size: 1.2em;
    font-family: 'Futura PT', 'Helvetica Neue', Arial, sans-serif;
    font-weight: 400;
    margin-top: 0;
    transition: background-color 0.3s ease;
    position: relative; /* for absolutely positioned ::after */
    text-transform: uppercase; /* make collapsible headings all caps */
    letter-spacing: 0.02em;
    /* single dividing line between stacked collapsibles */
    border-top: 1px solid #cccccc;
    border-style: solid;
}

/* Remove the top border from the very first collapsible so it doesn't have a line at the top of the list */
.collapsible:first-of-type {
    border-top: 1px solid #cccccc; /* add border above Research */
}

/* Add bottom border to the last collapsible so there's a line below Teaching */
.collapsible:last-of-type {
    border-bottom: 1px solid #cccccc;
}

/* Slightly lighter strong to keep emphasis without heavy bold */
strong {
    font-weight: 500;
}

.intro-text strong {
    text-transform: uppercase;
    display: inline-block; /* preserve line-break behavior */
}

.collapsible:hover {
    background-color: #f9f9f9; /* Subtle hover effect */
}

.collapsible.active {
     border-bottom-left-radius: 0; /* Straighten corners when open */
     border-bottom-right-radius: 0;
}


.collapsible::after {
    content: '\002B';         /* Plus sign */
    color: #000000;            /* darker blue */
    font-weight: 100;          /* very light symbol weight */
    font-size: 2.2em;          /* bigger symbol */
    line-height: 1;            /* Use normal line height for centering */

    position: absolute;
    right: 18px;               /* match button padding to sit inside box */
    top: 50%;
    transform: translateY(-50%);
}

.collapsible.active::after {
    content: "\2212"; /* Minus sign */
}

.content {
    padding: 0 18px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    background-color: #ffffff; /* White background to match button */
  
    border: 0px solid #ddd;     /* Matching border */
    border-top: none;           /* Remove top border to merge with button */
    border-radius: 0 0 0px 0px; /* Round bottom corners */
}

/* =============================================================== */
/* CONTENT LIST STYLES                                             */
/* =============================================================== */

.content ul {
    /* --- NEW --- */
    list-style-type: none; /* Remove bullet points */
    padding-left: 0;       /* Remove default indentation */
}

.content ul li, .content .teaching-entry {
    /* --- NEW --- */
    margin-bottom: 20px; /* Add space between list items and entries */
}

/* To avoid double margin on the last item */
.content ul li:last-child, .content .teaching-entry:last-child {
    margin-bottom: 0;
}

.content h3, .content h4 {
    margin-top: 25px;
}

/* Footer styling */
.site-footer {
    margin-top: 10px; /* reduce space between footer and last collapsible */
    padding-top: 10px;
    color: #333;
}
.site-footer a { color: inherit; text-decoration: underline; }

/* Make the headings inside the first collapsible less heavy */
.collapsible:first-of-type + .content h3,
.collapsible:first-of-type + .content h4 {
    font-weight: 400;
}

.content .teaching-entry ul li {
    margin-bottom: 0; /* Reset margin for nested list items if any */
}