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

body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.7; 
    color: #333; 
    background-color: #fdfdff; 
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    width: 90%;
    max-width: 1100px; 
    margin-left: auto;
    margin-right: auto;
}

/* === Header & Navigation === */
.site-header {
    border-bottom: 1px solid #e0e0e0;
    background-color: #fff; 
    position: sticky; 
    top: 0;
    z-index: 100; 
}

.site-header .container {
    padding: 15px 0;
    display: flex;
    justify-content: space-between; 
    align-items: center; 
}

.banner-container {
    width: 100%; 
    max-height: 50px; 
    overflow: hidden; 
    line-height: 0; 
    background-color: #f0f0f0; 
}

.banner-image {
    width: 100%; 
    height: auto; 
    display: block; 
    object-fit: cover; 
    object-position: center; 
}

.logo-container .logo-image {
    height: 100px; 
    width: auto;  
    display: block;
}

.main-nav ul {
    list-style: none; 
    display: flex;
    gap: 0; /* Remove gap, manage with padding on items */
    align-items: center; /* Align items vertically */
}
.main-nav ul li {
    position: relative; /* For dropdown positioning */
}

.main-nav a, .main-nav .dropdown-trigger { /* Apply to both links and dropdown triggers */
    text-decoration: none;
    color: #555; 
    font-weight: 500;
    font-size: 1em;
    padding: 10px 15px; /* Add padding for better click/hover area */
    display: block; /* Make the whole area clickable */
    transition: color 0.3s ease, background-color 0.3s ease; 
}

.main-nav a:hover,
.main-nav a.active,
.main-nav .dropdown-trigger:hover,
.dropdown-container:hover .dropdown-trigger { 
    color: #0071e3; 
    background-color: #f0f8ff; /* Light blue background on hover/active */
}
.main-nav .dropdown-trigger .arrow-down {
    font-size: 0.7em;
    margin-left: 5px;
    display: inline-block;
    transition: transform 0.2s ease-in-out;
}
.dropdown-container:hover .dropdown-trigger .arrow-down {
    transform: rotate(180deg);
}


/* === Dropdown Menu === */
.dropdown-container {
    position: relative;
}
.dropdown-menu {
    list-style: none;
    position: absolute;
    top: 100%; /* Position below the parent */
    left: 0;
    background-color: #fff;
    border: 1px solid #e0e0e0;
    border-top: none; /* Avoid double border with parent's bottom */
    border-radius: 0 0 6px 6px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    min-width: 200px; /* Minimum width of dropdown */
    z-index: 110; /* Above other header content */
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
}

/* === NEW: Rule for right-aligned dropdowns === */
.dropdown-menu-right {
    left: auto;
    right: 0;
}

.dropdown-container:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.dropdown-menu li a.dropdown-item {
    padding: 12px 20px;
    font-size: 0.95em;
    color: #444;
    white-space: nowrap; /* Prevent text wrapping */
}
.dropdown-menu li a.dropdown-item:hover {
    background-color: #e9f5ff; /* Light blue */
    color: #0071e3;
}


/* === Main Content Area === */
.main-content {
    padding: 40px 0; 
}

/* === Styles for Pages without a main site-header === */
.main-content.no-header-page,
.main-content.resume-subpage {
    padding-top: 30px; /* Add space at the top if header is removed */
}
.subpage-header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}
.subpage-header.compact-header {
    text-align: left; /* For contact page back link */
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: none;
}

.subpage-header h1 { /* For resume subpages, name display */
    font-size: 2.2em;
    font-weight: 700;
    margin-bottom: 0.15em;
    color: #1a1a1a;
}
.subpage-header .contact-info {
    font-size: 0.95em;
    color: #555;
    line-height: 1.5;
}
.subpage-header .contact-info a {
    color: #0071e3;
}
.back-to-home-link {
    display: inline-block;
    margin-bottom: 15px;
    color: #0071e3;
    text-decoration: none;
    font-weight: 500;
}
.back-to-home-link:hover {
    text-decoration: underline;
}


/* Specific padding for resume page (now subpages) */
.main-content.resume-page, /* Keeping this if it's still used by old resume.html, but likely not needed */
.main-content.resume-subpage { /* Apply to new subpages */
    padding-top: 10px; /* Adjusted as subpage-header adds its own margin */
    padding-bottom: 30px;
}

.hero-section {
    text-align: center;
    padding: 80px 0;
}
.hero-section h1 {
    font-size: 3em;
    font-weight: 700;
    color: #111;
    margin-bottom: 0.5em;
    line-height: 1.25;
}
.hero-section .subtitle {
    font-size: 1.25em;
    color: #555;
    max-width: 720px; 
    margin: 0 auto 1.8em auto; 
}
.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px; 
    margin-top: 25px;
}

.btn {
    display: inline-flex; /* Changed to inline-flex for icon alignment */
    align-items: center; /* Vertically align icon and text */
    justify-content: center; /* Center content within button */
    padding: 14px 30px;
    border: none;
    border-radius: 25px; 
    text-decoration: none;
    font-weight: 500;
    font-size: 1em;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.3s ease;
}
.btn:hover {
    transform: scale(1.03); 
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1); 
}
.btn-primary { background-color: #0071e3; color: #fff; }
.btn-primary:hover { background-color: #0077ed; }
.btn-secondary { background-color: #e8e8e8; color: #333; }
.btn-secondary:hover { background-color: #dddddd; }

/* Styles for buttons with icons */
.btn-icon {
    width: 18px; /* Adjust size as needed */
    height: 18px;
    margin-right: 10px; /* Space between icon and text */
    vertical-align: middle; /* Helps with alignment in some cases */
}
.btn-primary .btn-icon { /* If you want icons in primary buttons to be white */
    filter: brightness(0) invert(1);
}
/* Secondary button icons are typically dark, so no filter needed unless SVG is light */


.resume-page .container, /* Old resume page container, if still used */
.resume-subpage .container { /* New subpage container */
    max-width: 1000px; 
}

.resume-section {
    padding: 25px 0; 
}
.resume-section:last-child {
    padding-bottom: 0;
}

/* Resume Header on subpages is now .subpage-header */
/* The .resume-header class might be unused now or only on a full resume page if you keep one */
.resume-header {
    text-align: center;
    padding-top: 10px;
    padding-bottom: 20px; 
    margin-bottom: 20px; 
}
.resume-header h1 {
    font-size: 2.8em; 
    font-weight: 700; 
    margin-bottom: 0.25em;
    color: #1a1a1a; 
}
.resume-header .contact-info {
    font-size: 1em;
    color: #555; 
    margin-bottom: 1.2em;
    line-height: 1.6;
}
.resume-header .contact-info a {
    color: #0071e3;
    text-decoration: none;
    transition: color 0.2s ease;
}
.resume-header .contact-info a:hover {
    color: #0056b3; 
    text-decoration: underline;
}

.resume-section h2 { 
    font-size: 1.8em; 
    font-weight: 700; 
    color: #222;
    margin-bottom: 1.8em; 
    padding-bottom: 0.5em; 
    border-bottom: 3px solid #0071e3; 
    display: inline-block; 
}

.resume-item { 
    margin-bottom: 2.5em; 
    background-color: #ffffff; 
    border: 1px solid #e6e6e6; 
    border-radius: 8px; 
    padding: 25px; 
    box-shadow: 0 3px 8px rgba(0,0,0,0.06); 
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.resume-item:hover {
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transform: translateY(-3px);
}
.resume-item:last-child {
    margin-bottom: 0.5em; 
}
.resume-item h3 { 
    font-size: 1.3em; 
    font-weight: 600;
    color: #0056b3; 
    margin-bottom: 0.3em;
}
.resume-item .institution,
.resume-item .dates {
    font-size: 1em;
    color: #555; 
    margin-bottom: 0.4em;
}
.resume-item .dates {
    font-style: italic;
}

.course-groups {
    margin-top: 1.5em; 
    padding-left: 5px; 
}
.course-groups p strong { 
    display: block;
    margin-bottom: 1.2em;
    font-weight: 600;
    color: #333;
    font-size: 1.05em;
}
.course-groups h4 { 
    font-size: 1.1em;
    font-weight: 600;
    color: #0071e3; 
    margin-top: 1.5em; 
    margin-bottom: 0.8em;
    padding-bottom: 0.3em;
    border-bottom: 1px solid #e0e0e0; 
}
.course-groups h4:first-of-type {
    margin-top: 0.5em;
}
.course-groups ul {
    list-style: none; 
    padding-left: 15px; 
    margin-bottom: 1.5em; 
}
.course-groups li {
    margin-bottom: 1em; 
    font-size: 0.95em;
    line-height: 1.6;
    color: #444;
}
.course-groups li strong { 
    font-weight: 600;
    color: #222;
    display: block; 
    margin-bottom: 0.2em;
}

.course-details-container {
    margin-top: 1.2em; 
    margin-bottom: 1em;
    background-color: transparent; 
    border: none; 
    border-radius: 0;
}
.course-summary { 
    display: inline-flex; 
    align-items: center;
    padding: 10px 18px;
    font-weight: 500;
    color: #0056b3; 
    background-color: #e9f5ff; 
    cursor: pointer;
    list-style: none; 
    transition: background-color 0.3s ease, color 0.3s ease, box-shadow 0.2s ease, transform 0.2s ease;
    border-radius: 20px; 
    border: 1px solid #cce7ff; 
    box-shadow: 0 1px 2px rgba(0,86,179,0.1);
}
.course-summary:hover {
    background-color: #d6ecff;
    color: #004080;
    box-shadow: 0 2px 4px rgba(0,86,179,0.15);
    transform: translateY(-1px);
}
.course-summary .summary-text {
    margin-left: 8px;
}
.course-summary::before {
    content: '›'; 
    display: inline-block;
    font-size: 1.6em; 
    line-height: 1;
    color: #0071e3; 
    transition: transform 0.3s ease; 
    font-weight: bold;
}
details[open] > .course-summary::before {
    transform: rotate(90deg);
}
details[open] > .course-summary {
    background-color: #d6ecff;
    color: #004080;
}
details[open] > .course-groups {
    padding: 1.5em 15px 5px 15px; 
    border-top: 1px solid #e0e0e0;
    margin-top: 15px; 
}

.resume-item .details-list { 
    list-style-type: none; 
    padding-left: 5px; 
    margin-top: 0.8em;
}
.resume-item .details-list li {
    position: relative;
    padding-left: 22px; 
    margin-bottom: 0.9em; 
    line-height: 1.7;
    color: #444;
}
.resume-item .details-list li::before {
    content: '▪'; 
    position: absolute;
    left: 0;
    top: 0px; 
    color: #0071e3; 
    font-size: 1.2em; 
    font-weight: normal;
}

.skills-list { 
    margin-top: 0.8em;
}
.skills-list div { 
    display: grid;
    grid-template-columns: 200px 1fr; 
    gap: 20px; 
    margin-bottom: 1.4em; 
    align-items: start; 
    padding: 10px 0; 
    border-bottom: 1px dashed #eee; 
}
.skills-list div:last-child {
    border-bottom: none;
    margin-bottom: 0;
}
.skills-list dt { 
    font-weight: 600;
    color: #0056b3; 
    text-align: right; 
    padding-right: 20px; 
    font-size: 1.05em;
}
.skills-list dd { 
    color: #444;
    margin-left: 0; 
    line-height: 1.6;
    font-size: 0.95em;
}

.history-list {
    list-style: none;
    padding-left: 0;
}
.history-list li {
    margin-bottom: 1.2em; 
    color: #444;
    padding: 10px;
    border-left: 3px solid #0071e3; 
    background-color: #f9f9f9; 
    border-radius: 0 4px 4px 0;
}
.history-list li span {
    display: block; 
}
.history-list .history-job {
    font-weight: 600; 
    color: #222; 
    font-size: 1.05em;
    margin-bottom: 0.1em;
}
.history-list .history-location {
    font-size: 0.9em;
    color: #666;
    margin-bottom: 0.2em;
}
.history-list .history-date {
    font-size: 0.9em; 
    color: #555;
    font-style: italic;
}

/* === Contact Page Styles === */
.contact-page h1 {
    text-align: center;
    margin-bottom: 0.3em;
}
.contact-subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 1.5em; /* Adjusted margin */
    font-size: 1.1em;
}

.social-cta-buttons {
    display: flex;
    justify-content: center;
    gap: 15px; /* Space between social buttons */
    margin-bottom: 2.5em; /* Space below social buttons, before form */
    flex-wrap: wrap; /* Allow buttons to wrap on smaller screens */
}
.btn-social { /* Specific styling for social buttons if needed, inherits .btn */
    min-width: 220px; /* Ensure buttons have a decent width */
}


.contact-section {
    margin-bottom: 1.5em; 
    padding: 20px; 
    border-bottom: 1px solid #eee; 
    background-color: #fff; 
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}
.contact-section:last-of-type {
     border-bottom: none; 
     margin-bottom: 0;
}
.contact-section h2 {
    font-size: 1.5em;
    font-weight: 600;
    color: #0071e3; 
    margin-bottom: 1em; 
    padding-bottom: 0.3em;
    border-bottom: 2px solid #e0e0e0; 
}

.form-group {
    margin-bottom: 1.5em;
}
.form-group label {
    display: block;
    margin-bottom: 0.5em;
    font-weight: 500;
    color: #444;
}
.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ccc; 
    border-radius: 6px;
    font-family: inherit; 
    font-size: 1em;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    background-color: #fdfdfd; 
}
.form-group textarea {
    resize: vertical; 
    min-height: 120px;
}
.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group textarea:focus {
    border-color: #0071e3; 
    outline: none; 
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.15); 
    background-color: #fff;
}
#contactForm button[type="submit"] {
    margin-top: 1em;
}

.connect-list {
    list-style: none;
    padding-left: 0;
}
.connect-list li {
    margin-bottom: 0.8em;
    font-size: 1.05em;
    color: #444;
    padding: 8px 0;
}
.connect-list li strong {
    font-weight: 600;
    margin-right: 8px;
    color: #333;
}
.connect-list li a {
    color: #0071e3;
    text-decoration: none;
}
.connect-list li a:hover {
    text-decoration: underline;
    color: #0056b3;
}

.map-container {
    max-width: 100%;
    overflow: hidden;
    border-radius: 8px; 
    box-shadow: 0 2px 8px rgba(0,0,0,0.1); 
    margin-bottom: 1em;
}
.map-container iframe {
    display: block; 
    border: none; 
}
.location-section p { 
    text-align: center;
    color: #666;
    font-size: 0.95em;
}

/* === Footer === */
.site-footer {
    background-color: #f0f2f5; 
    padding: 40px 0;
    margin-top: 30px; 
    border-top: 1px solid #d9dde0; 
    text-align: center;
    font-size: 0.9em;
    color: #555; 
}
.footer-links {
    margin-bottom: 15px;
}
.footer-links a {
    color: #444; 
    text-decoration: none;
    margin: 0 12px; 
    transition: color 0.3s ease;
}
.footer-links a:hover {
    color: #0071e3;
}
.footer-links span { 
    margin: 0 12px;
    color: #444;
}
.copyright {
    font-size: 0.9em;
    color: #666;
}

/* === Responsive Design === */
@media (max-width: 992px) { 
    .skills-list div {
        grid-template-columns: 180px 1fr; 
        gap: 15px;
    }
    .skills-list dt {
        padding-right: 15px;
    }
    .main-nav ul {
        gap: 5px; /* Reduce gap for tighter nav items */
    }
    .main-nav a, .main-nav .dropdown-trigger {
        padding: 10px 12px; /* Adjust padding */
    }
}

@media (max-width: 768px) { 
    body {
        line-height: 1.65; 
    }
    .site-header {
        padding: 0; 
        position: static; 
    }
    .site-header .container {
        flex-direction: column; 
        gap: 0; 
        padding: 10px 0 0 0; 
    }
    .logo-container { /* Center logo */
        width: 100%;
        text-align: center;
        margin-bottom: 10px;
    }
    .logo-container .logo-image {
        height: 80px; /* Smaller logo */
        margin: 0 auto;
    }
    .main-nav {
        width: 100%;
        border-top: 1px solid #e0e0e0;
    }
    .main-nav ul {
        justify-content: space-around; /* Distribute nav items */
        flex-wrap: nowrap; /* Prevent wrapping for primary items */
        gap: 0;
        /* === MOBILE FIX: Set new positioning context === */
        position: relative;
    }
    .main-nav ul li {
        flex-grow: 1; /* Allow items to take available space */
        text-align: center; /* Center text in nav items */
        /* === MOBILE FIX: Remove positioning context from list item === */
        position: static;
    }
    .main-nav a, .main-nav .dropdown-trigger {
        padding: 12px 5px; /* Adjust padding */
        font-size: 0.9em;
    }
     .dropdown-menu { /* Make dropdown full width on mobile */
        left: 0;
        /* === MOBILE FIX: Remove right: 0 and use width: 100% === */
        width: 100%;
        min-width: auto;
        border-left: none;
        border-right: none;
        border-radius: 0;
        box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    }
    .dropdown-menu li a.dropdown-item {
        text-align: center;
    }


    .hero-section { padding: 60px 0; }
    .hero-section h1 { font-size: 2.2em; } /* Adjusted for smaller screens */
    .hero-section .subtitle { font-size: 1.1em; } /* Adjusted */

    .resume-header h1, .subpage-header h1 { font-size: 2em; } /* Adjusted */
    .resume-section h2 { font-size: 1.5em; margin-bottom: 1.2em; } /* Adjusted */
    .resume-item { padding: 15px; } /* Adjusted */
    .resume-item h3 { font-size: 1.15em; } /* Adjusted */

    .skills-list div {
        grid-template-columns: 1fr; 
        gap: 10px;
        padding: 10px 5px;
    }
    .skills-list dt { 
        text-align: left;
        font-weight: 600;
        border-bottom: 1px solid #ddd; 
        padding-bottom: 8px;
        margin-bottom: 8px;
        padding-right: 0;
    }

    .footer-links {
        display: flex;
        flex-direction: column;
        gap: 10px; 
    }
    .footer-links span,
    .footer-links a {
        margin: 0; 
    }
    .social-cta-buttons {
        gap: 10px;
        margin-bottom: 2em;
    }
    .btn-social {
        min-width: 180px; /* Adjust for smaller screens */
        width: 80%; /* Allow them to take more width if stacked */
        max-width: 250px;
    }

}

@media (max-width: 480px) { 
     body {
        font-size: 15px; 
     }
    .container {
        width: 95%; 
    }
     .hero-section { padding: 40px 0; }
     .hero-section h1 { font-size: 1.8em; } /* Further adjust */
    .hero-section .subtitle { font-size: 1em; } /* Further adjust */
    .cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }
    .btn { 
        width: 90%;
        max-width: 300px; 
        padding: 12px 20px;
        font-size: 0.95em; /* Slightly smaller button text */
        /* text-align: center; -- already handled by justify-content: center */
    }
    .resume-header h1, .subpage-header h1 { font-size: 1.8em; } /* Further adjust */
    .resume-section h2 { font-size: 1.3em; } /* Further adjust */
    .resume-item h3 { font-size: 1.1em; } /* Further adjust */

    .course-summary { padding: 8px 15px; font-size: 0.95em; }
    .course-summary .summary-text { margin-left: 6px; }
    .course-summary::before { font-size: 1.4em; }

    .course-groups h4 { font-size: 1em; } /* Adjusted */
    .course-groups li { font-size: 0.9em; }

    .history-list li {
        padding: 8px;
        padding-left: 12px; 
    }
    .main-nav a, .main-nav .dropdown-trigger {
        font-size: 0.85em; /* Smaller font for very small screens */
    }
    .social-cta-buttons {
        flex-direction: column; /* Stack social buttons on very small screens */
        align-items: center;
    }
    .btn-social {
        width: 100%; /* Full width when stacked */
        max-width: 280px;
    }
    .btn-icon {
        width: 16px;
        height: 16px;
        margin-right: 8px;
    }
}