/* CSS Custom Properties for Dark Mode Support */
:root {
    /* Cream & Charcoal - Light mode */
    --bg-primary: #faf9f7;
    --bg-secondary: #f5f3f0;
    --bg-card: #ffffff;
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --text-muted: #6b7280;
    --border-color: rgba(0, 0, 0, 0.08);
    --link-color: #374151;
    --link-hover: #111827;
    --accent-gradient: linear-gradient(135deg, #374151 0%, #6b7280 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(0, 0, 0, 0.06);
    --nav-bg: rgba(250, 249, 247, 0.9);
    --pill-bg: rgba(0, 0, 0, 0.05);
    --pill-text: #4b5563;
    --pill-hover-bg: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    /* Cream & Charcoal - Dark mode */
    --bg-primary: #18181b;
    --bg-secondary: #27272a;
    --bg-card: #27272a;
    --text-primary: #fafafa;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --border-color: rgba(255, 255, 255, 0.08);
    --link-color: #d4d4d8;
    --link-hover: #fafafa;
    --accent-gradient: linear-gradient(135deg, #a1a1aa 0%, #d4d4d8 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --glass-bg: rgba(39, 39, 42, 0.8);
    --glass-border: rgba(255, 255, 255, 0.05);
    --nav-bg: rgba(24, 24, 27, 0.9);
    --pill-bg: rgba(255, 255, 255, 0.08);
    --pill-text: #a1a1aa;
    --pill-hover-bg: rgba(255, 255, 255, 0.15);
}

/* BASE RULES */
html {
    font-size: 1em;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary) !important;
    color: var(--text-primary) !important;
    transition: background-color 0.25s ease, color 0.25s ease;
    min-height: 100vh;
}

a {
    color: var(--link-color);
    text-decoration: none;
    font-family: 'Lato', Verdana, Helvetica, sans-serif;
    font-display: auto;
    transition: color 0.15s ease;
}

a:focus,
a:hover {
    color: var(--link-hover);
    text-decoration: none;
}

p {
    margin-block-start: 1.1rem;
    margin-block-end: 1.1rem;
}

em {
    font-style: italic;
}

body,
td,
th,
tr,
p {
    font-family: 'Lato', Verdana, Helvetica, sans-serif;
    font-size: 1.1rem;
    font-display: auto;
}

strong {
    font-family: 'Lato', Verdana, Helvetica, sans-serif;
    font-size: 1.1rem;
    font-display: auto;
    font-weight: bold;
}

h2 {
    font-family: 'Lato', Verdana, Helvetica, sans-serif;
    font-size: 1.75rem;
    font-display: auto;
    font-weight: 600;
    padding: 0px;
    margin: 0px;
    display: inline;
    color: var(--text-primary);
}

h3 {
    font-family: 'Lato', Verdana, Helvetica, sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    font-display: auto;
    padding: 0px;
    margin: 0px;
    display: inline;
    color: var(--text-primary);
}

h1 {
    font-family: 'Lato', Verdana, Helvetica, sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    font-display: auto;
    text-align: center;
    padding: 0px;
    margin-block-start: 10px;
    margin-block-end: 10px;
    margin-left: 0px;
    margin-right: 0px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.fade {
    transition: opacity .2s ease-in-out;
    -moz-transition: opacity .2s ease-in-out;
    -webkit-transition: opacity .2s ease-in-out;
}

span.highlight {
    background-color: #ffffd0;
}

/* Website specific */

#portrait {
    border-radius: 50%;
    width: 100%;
    max-width: 100%;
    box-shadow: var(--shadow-lg);
    border: 4px solid var(--glass-border);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

#portrait:hover {
    transform: scale(1.02);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.15), 0 10px 10px -5px rgba(0, 0, 0, 0.08);
}

/* Mobile profile picture scaling */
@media screen and (max-width: 767px) {
    #portrait {
        max-width: 200px;
        margin: 0 auto;
        display: block;
    }

    .col-md-4 {
        text-align: center;
    }

    h1 {
        font-size: 2rem;
    }
}

.project-thumbnail-parent {
    display: grid;
    grid-template-columns: 1fr;
}

.project-thumbnail-parent .project-thumbnail {
    width: auto;
    height: auto;
    max-width: 100%;
    grid-row-start: 1;
    grid-column-start: 1;
}

.project-thumbnail-parent .project-thumbnail.pre-hover {
    z-index: 2;
}

.project-thumbnail-parent .project-thumbnail.post-hover {
    z-index: 1;
}

.project-description {
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
    padding-left: 1.5rem;
}

.modal-dialog {
    max-width: 850px;
}

/* Cards with glassmorphism effect */
.card {
    background: var(--glass-bg) !important;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color) !important;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.card .card-body {
    background: transparent !important;
}

/* News list styling */
.news-list {
    list-style: none;
    padding-left: 0;
}

.news-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.news-list li:last-child {
    border-bottom: none;
}

/* Publications */
.publication {
    padding: 1.25rem 0.5rem;
    margin: 0 -0.5rem;
    border-bottom: 1px solid var(--border-color);
    border-radius: 8px;
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.publication:hover {
    background-color: var(--bg-secondary);
    box-shadow: var(--shadow-sm);
}

.publication .authors {
    color: var(--text-secondary);
}

.publication .authors a {
    color: var(--text-secondary);
}

.publication .authors a:focus,
.publication .authors a:hover {
    color: var(--link-hover);
    text-decoration: none;
}

/* Publication link pills */
.pub-links {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.pub-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.75rem;
    background: var(--pill-bg);
    color: var(--pill-text) !important;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.15s ease;
    border: 1px solid transparent;
}

.pub-link:hover {
    background: var(--pill-hover-bg);
    color: var(--link-color) !important;
    border-color: var(--link-color);
    transform: translateY(-1px);
}

.pub-link svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

/* Contact links with icons */
.contact-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--pill-bg);
    color: var(--pill-text) !important;
    border-radius: 25px;
    font-weight: 500;
    transition: all 0.15s ease;
    border: 1px solid transparent;
}

.contact-link:hover {
    background: var(--accent-gradient);
    color: white !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.contact-link svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

/* Dark mode toggle */
.theme-toggle {
    background: var(--pill-bg);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.15s ease;
    margin-left: auto;
}

.theme-toggle:hover {
    background: var(--pill-hover-bg);
    transform: rotate(15deg);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    fill: var(--text-primary);
    transition: fill 0.15s ease;
}

.theme-toggle .sun-icon {
    display: none;
}

.theme-toggle .moon-icon {
    display: block;
}

[data-theme="dark"] .theme-toggle .sun-icon {
    display: block;
}

[data-theme="dark"] .theme-toggle .moon-icon {
    display: none;
}

/* Navigation with glassmorphism */
.navbar {
    background: var(--nav-bg) !important;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.25s ease;
}

.navbar .nav-link {
    color: var(--text-primary) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: 8px;
    transition: all 0.15s ease;
}

.navbar .nav-link:hover {
    background: var(--pill-bg);
    color: var(--link-color) !important;
}

.navbar .navbar-toggler {
    border-color: var(--border-color);
}

.navbar .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(100, 100, 120, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

[data-theme="dark"] .navbar .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(200, 200, 220, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Bootstrap-specific */
body div.container-fluid {
    max-width: 1000px;
}

.font-small {
    font-size: 0.9rem;
}

/* Footer */
.page-footer {
    background: var(--bg-secondary) !important;
    color: var(--text-muted) !important;
    border-top: 1px solid var(--border-color);
}

.page-footer a {
    color: var(--text-muted);
}

.page-footer a:hover {
    color: var(--link-hover);
}

/* Modal styling for dark mode */
.modal-content {
    background-color: var(--bg-card) !important;
    border: 1px solid var(--border-color);
}

.modal-content .modal-header {
    border-bottom-color: var(--border-color);
}

.modal-content .modal-header .modal-title {
    color: var(--text-primary);
}

.modal-content .modal-header .close {
    color: var(--text-primary);
}

.modal-content .modal-body {
    color: var(--text-primary);
}

.modal-content .modal-footer {
    border-top-color: var(--border-color);
}

.code {
    background-color: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
    padding: 1rem;
    border-radius: 8px;
    font-size: 0.85rem;
}

/* Bio section styling */
#bio p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Smooth transitions for theme switching */
html.theme-transition,
html.theme-transition *,
html.theme-transition *:before,
html.theme-transition *:after {
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease !important;
}

/* Force SVG icon sizing in all contexts */
svg {
    max-width: 100%;
    height: auto;
}

/* Additional SVG constraints for inline icons */
a svg,
button svg,
.contact-link svg,
.pub-link svg,
.theme-toggle svg {
    width: 18px;
    height: 18px;
    max-width: 18px;
    max-height: 18px;
    flex-shrink: 0;
}