/* ========================================
   Enrique Acebo - Academic Website
   Minimalist Design
   ======================================== */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@400;600;700&display=swap');

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Open Sans', sans-serif;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.7;
    color: #333333;
    background-color: #ffffff;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: #333333;
}

h1 { font-size: 1.5rem; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.1rem; }

p {
    margin-bottom: 1rem;
}

a {
    color: #b12b32;
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: #8a2128;
    text-decoration: underline;
}

/* Layout */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
header {
    background-color: #f8f8f8;
    border-bottom: 1px solid #e5e5e5;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

/* Header for home page - not fixed */
.home-page header {
    position: relative;
}

.home-page main {
    padding-top: 0;
}

.header-content {
    max-width: 1100px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-title {
    display: flex;
    align-items: center;
    height: 2rem;
    font-size: 1.1rem;
    font-weight: 700;
    line-height: 1;
    color: #333333;
    text-decoration: none;
}

.site-title:hover {
    color: #b12b32;
    text-decoration: none;
}

/* Navigation */
nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

nav a {
    color: #666666;
    font-size: 0.9rem;
    font-weight: 400;
    text-decoration: none;
    transition: color 0.2s ease;
}

nav a:hover,
nav a.active {
    color: #b12b32;
}

/* Mobile menu toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    width: 2rem;
    height: 2rem;
    padding: 0;
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    color: rgb(160, 160, 160);
    align-items: center;
    justify-content: center;
}

/* Main content */
main {
    padding-top: 80px;
    min-height: calc(100vh - 150px);
}

section {
    padding: 3rem 0;
}

section:first-child {
    padding-top: 2rem;
}

/* Main Content Layout */
.home-content {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 3rem;
    max-width: 1100px;
    margin: 0 auto;
    padding: 2.5rem 2rem;
}

/* Sidebar (Left Column) */
.sidebar {
    position: relative;
}

.sidebar-photo {
    width: 100%;
    max-width: 250px;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 1.25rem;
}

.sidebar h1 {
    font-size: 1.4rem;
    margin-bottom: 0.25rem;
    line-height: 1.2;
}

.sidebar .title {
    color: #666666;
    font-size: 0.95rem;
    margin-bottom: 1.25rem;
}

.sidebar .email {
    color: #b12b32;
    margin-bottom: 1rem;
    display: block;
}

.sidebar .affiliation {
    color: #666666;
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.sidebar .academic-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
}

.sidebar .academic-links a {
    border: none;
    padding: 0.25rem 0;
    font-size: 0.95rem;
}

.sidebar .academic-links a:hover {
    border: none;
}

/* Main Content (Right Column) */
.main-content {
    padding-top: 0;
}

.main-content h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: #333333;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.main-content .lead {
    font-size: 0.95rem;
    color: #666666;
    margin-bottom: 1.25rem;
    line-height: 1.6;
    font-style: italic;
}

.main-content p {
    font-size: 0.95rem;
    line-height: 1.7;
}

/* Legacy hero styles for compatibility */
.hero {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    padding: 2rem 0 3rem;
}

.hero-photo {
    flex-shrink: 0;
}

.hero-photo img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
}

.hero-content h1 {
    margin-bottom: 0.25rem;
}

.hero-content .title {
    color: #666666;
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.hero-content .affiliation {
    color: #666666;
    margin-bottom: 1rem;
}

/* Academic Links */
.academic-links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.academic-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.8rem;
    border: 1px solid #e5e5e5;
    border-radius: 4px;
    font-size: 0.85rem;
    color: #666666;
    transition: all 0.2s ease;
}

.academic-links a:hover {
    border-color: #b12b32;
    color: #b12b32;
    text-decoration: none;
}

.academic-links svg,
.academic-links i {
    width: 16px;
    height: 16px;
}

/* Section Titles */
.section-title {
    font-size: 1.25rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 2rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #b12b32;
}

/* About Section */
.about p {
    text-align: justify;
}

/* News Section */
.news-list {
    list-style: none;
}

.news-item {
    padding: 1rem 0;
    border-bottom: 1px solid #e5e5e5;
}

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

.news-date {
    font-size: 0.85rem;
    color: #666666;
    margin-bottom: 0.25rem;
}

/* Publications */
.year-group {
    margin-bottom: 2.5rem;
}

.year-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #b12b32;
    margin-bottom: 1rem;
    padding-bottom: 0.25rem;
    border-bottom: 1px solid #e5e5e5;
}

.publication {
    margin-bottom: 1.5rem;
    padding-left: 1rem;
    border-left: 3px solid #e5e5e5;
}

.publication:hover {
    border-left-color: #b12b32;
}

.publication-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.publication-title a {
    color: #333333;
}

.publication-title a:hover {
    color: #b12b32;
}

.publication-authors {
    font-size: 0.95rem;
    color: #666666;
    margin-bottom: 0.25rem;
}

.publication-venue {
    font-style: italic;
    color: #666666;
    margin-bottom: 0.5rem;
}

.publication-links {
    display: inline-flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 0;
    margin-right: 0.75rem;
}

.publication-links a {
    font-size: 0.85rem;
    padding: 0.35rem 0.7rem;
    border: 1px solid #e5e5e5;
    border-radius: 4px;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    height: 26px;
    box-sizing: border-box;
}

.publication-links a:hover {
    border-color: #b12b32;
    text-decoration: none;
}

.publication-links a i {
    font-size: 0.9rem;
}

/* Projects */
.project {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background-color: #f8f8f8;
    border-radius: 6px;
}

.project-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.project-meta {
    font-size: 0.9rem;
    color: #666666;
    margin-bottom: 0.75rem;
}

.project-status {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    font-size: 0.8rem;
    background-color: #b12b32;
    color: #ffffff;
    border-radius: 3px;
    margin-left: 0.5rem;
}

/* Teaching */
.course {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #e5e5e5;
}

.course:last-child {
    border-bottom: none;
}

.course-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.course-meta {
    font-size: 0.95rem;
    color: #666666;
}

/* CV Page */
.cv-download {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: #b12b32;
    color: #ffffff;
    border: none;
    box-shadow: none;
    border-radius: 4px;
    font-weight: 600;
    margin-bottom: 2rem;
}

.cv-download:hover {
    background-color: #8a2128;
    color: #ffffff;
    text-decoration: none;
}

.cv-download:focus,
.cv-download:focus-visible {
    outline: none;
    box-shadow: 0 0 0 2px rgba(225, 76, 84, 0.45);
}

/* Awards List */
.awards-list {
    list-style: none;
}

.award-item {
    padding: 1rem 0;
    border-bottom: 1px solid #e5e5e5;
}

.award-item:last-child {
    border-bottom: none;
}

.award-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.award-details {
    font-size: 0.95rem;
    color: #666666;
}

/* Contact */
.contact-info {
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: #666666;
}

.contact-item a {
    color: #333333;
}

/* Footer */
footer {
    background-color: #f8f8f8;
    border-top: 1px solid #e5e5e5;
    padding: 2rem 0;
    margin-top: 3rem;
}

.footer-content {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
    position: relative;
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1rem;
    min-height: 2rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: #666666;
    font-size: 1.25rem;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: #b12b32;
}

.copyright {
    font-size: 0.85rem;
    color: #666666;
}

/* Responsive Design - Single column for home */
@media (max-width: 900px) {
    .home-content {
        grid-template-columns: 1fr;
        max-width: 600px;
        padding: 1.5rem;
    }

    .sidebar {
        text-align: center;
    }

    .sidebar-photo {
        margin: 0 auto 1rem;
        max-width: 180px;
    }

    .sidebar .academic-links {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
    }

    .main-content {
        padding-top: 1.5rem;
    }

    .main-content h2 {
        text-align: center;
    }

    .main-content .lead {
        text-align: center;
    }
}

/* Responsive Design - Mobile menu */
@media (max-width: 768px) {
    .header-content {
        flex-wrap: wrap;
    }

    .menu-toggle {
        display: flex;
        order: -1;
        margin-right: 0.4rem;
        transform: translateY(-1px);
    }

    .site-title {
        margin-right: auto;
    }

    nav {
        display: none;
        width: 100%;
        order: 10;
        padding-top: 1rem;
        background-color: #f8f8f8;
        border-top: 1px solid #e5e5e5;
        margin-top: 0.75rem;
        padding-bottom: 0.75rem;
    }

    nav.active {
        display: block;
    }

    nav ul {
        flex-direction: column;
        gap: 0.75rem;
    }

    .hero {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }

    .academic-links {
        justify-content: center;
    }

    h1 { font-size: 1.35rem; }
    h2 { font-size: 1.1rem; }

    section {
        padding: 2rem 0;
    }

    .dark-mode nav {
        background-color: var(--bg-secondary);
        border-top-color: var(--border-color);
    }

    .dark-mode nav a {
        color: #ffffff;
    }

    .footer-content {
        padding: 0 1.25rem;
    }

}

@media (max-width: 480px) {
    .hero-photo img {
        width: 120px;
        height: 120px;
    }

    .academic-links a {
        padding: 0.3rem 0.6rem;
        font-size: 0.8rem;
    }

    .publication {
        padding-left: 0.75rem;
    }

    .sidebar-photo {
        max-width: 130px;
    }
}

/* Utility Classes */
.text-muted {
    color: #666666;
}

.text-accent {
    color: #b12b32;
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

/* ========================================
   Dark Mode
   ======================================== */
.dark-mode {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --border-color: #404040;
    --accent: #e04850;
}

.dark-mode body,
.dark-mode {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.dark-mode header {
    background-color: var(--bg-secondary);
    border-bottom-color: var(--border-color);
}

.dark-mode .site-title,
.dark-mode h1, .dark-mode h2, .dark-mode h3,
.dark-mode h4, .dark-mode h5, .dark-mode h6 {
    color: var(--text-primary);
}

.dark-mode nav a,
.dark-mode .text-muted,
.dark-mode .publication-authors,
.dark-mode .publication-venue,
.dark-mode .course-meta,
.dark-mode .award-details,
.dark-mode .news-date {
    color: var(--text-secondary);
}

.dark-mode a {
    color: var(--accent);
}

.dark-mode .publication {
    border-left-color: var(--border-color);
}

.dark-mode .publication:hover {
    border-left-color: var(--accent);
}

.dark-mode .publication-title a {
    color: var(--text-primary);
}

.dark-mode .publication-links a,
.dark-mode .academic-links a {
    border-color: rgba(255, 255, 255, 0.35);
    color: #ffffff;
}

.dark-mode .publication-links a:hover,
.dark-mode .academic-links a:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.dark-mode .sidebar .email {
    color: var(--accent);
}

.dark-mode .project {
    background-color: var(--bg-secondary);
}

.dark-mode .year-title {
    color: var(--accent);
    border-bottom-color: var(--border-color);
}

.dark-mode .section-title {
    border-bottom-color: var(--accent);
}

.dark-mode footer {
    background-color: var(--bg-secondary);
    border-top-color: var(--border-color);
}

.dark-mode .footer-links a {
    color: var(--text-secondary);
}

.dark-mode .news-item,
.dark-mode .course,
.dark-mode .award-item {
    border-bottom-color: var(--border-color);
}

.dark-mode .cv-download {
    background-color: var(--accent);
    color: #ffffff;
}

.dark-mode .cv-download:hover {
    background-color: #c43d45;
    color: #ffffff;
}

.dark-mode .sidebar-photo {
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.dark-mode .main-content .lead {
    color: var(--text-secondary);
}

/* Language Switcher */
.lang-switch {
    display: flex;
    align-items: center;
    margin-right: 0.75rem;
}

.lang-switch button {
    background: none;
    border: none;
    width: 2rem;
    height: 2rem;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-family: inherit;
    font-size: 1.2rem;
    line-height: 1;
    transition: transform 0.2s ease;
}

.lang-switch button svg {
    width: 1.4rem;
    height: auto;
    display: block;
}

.lang-switch button:hover {
    transform: translateY(-1px);
}

.lang-switch button.active {
    background: none;
}

.dark-mode .lang-switch button {
    background: none;
}

.dark-mode .lang-switch button:hover {
    background: none;
}

.dark-mode .lang-switch button.active {
    background: none;
}

/* Dark Mode Toggle Button */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    width: 2rem;
    height: 2rem;
    padding: 0;
    font-size: 1.1rem;
    line-height: 1;
    color: #666666;
    transition: color 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle i {
    display: block;
    line-height: 1;
}

.theme-toggle:hover {
    color: #b12b32;
}

.dark-mode .theme-toggle {
    color: var(--text-secondary);
}

.dark-mode .theme-toggle:hover {
    color: var(--accent);
}

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

.dark-mode .theme-toggle .fa-moon {
    display: none;
}

.dark-mode .theme-toggle .fa-sun {
    display: inline;
}

/* ========================================
   Back to Top Button
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 45px;
    height: 45px;
    background-color: #b12b32;
    color: #ffffff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: #8a2128;
    transform: translateY(-3px);
}

.dark-mode .back-to-top {
    background-color: var(--accent);
}

.dark-mode .back-to-top:hover {
    background-color: #c43d45;
}

/* ========================================
   Publications Search & Filter
   ======================================== */
.publications-controls {
    margin-bottom: 2rem;
}

.search-box {
    position: relative;
    margin-bottom: 1rem;
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    border: 1px solid #e5e5e5;
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s ease;
}

.search-box input:focus {
    outline: none;
    border-color: #b12b32;
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #666666;
}

.dark-mode .search-box input {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.dark-mode .search-box input:focus {
    border-color: var(--accent);
}

/* Tags Filter */
.tags-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tag-btn {
    padding: 0.35rem 0.75rem;
    border: 1px solid #e5e5e5;
    border-radius: 20px;
    background: none;
    cursor: pointer;
    font-size: 0.85rem;
    font-family: inherit;
    color: #666666;
    transition: all 0.2s ease;
}

.tag-btn:hover,
.tag-btn.active {
    border-color: #b12b32;
    color: #b12b32;
    background-color: rgba(177, 43, 50, 0.05);
}

.dark-mode .tag-btn {
    border-color: var(--border-color);
    color: var(--text-secondary);
}

.dark-mode .tag-btn:hover,
.dark-mode .tag-btn.active {
    border-color: var(--accent);
    color: var(--accent);
    background-color: rgba(224, 72, 80, 0.1);
}

/* Publication Tags */
.publication-tags {
    display: flex;
    gap: 0.4rem;
    margin-top: 0.5rem;
    flex-wrap: wrap;
}

.publication-tag {
    font-size: 0.75rem;
    padding: 0.2rem 0.5rem;
    background-color: #f0f0f0;
    color: #666666;
    border-radius: 3px;
}

.dark-mode .publication-tag {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
}

/* Citation Badges */
.publication-badges {
    display: inline-flex;
    gap: 0.5rem;
    margin-bottom: 0;
    flex-wrap: wrap;
    align-items: center;
}

.publication-badges > span,
.publication-badges > div {
    display: inline-block;
    vertical-align: middle;
}

/* Keep Dimensions and Altmetric badges centered on the DOI row */
.publication-badges .__dimensions_badge_embed__,
.publication-badges .altmetric-embed {
    display: inline-flex;
    align-items: center;
    line-height: 1;
    margin-top: 0 !important;
    margin-bottom: 0 !important;
    vertical-align: middle !important;
}

.publication-badges .__dimensions_badge_embed__ iframe,
.publication-badges .altmetric-embed iframe,
.publication-badges .altmetric-embed a,
.publication-badges .altmetric-embed img {
    display: block;
    vertical-align: middle !important;
}

/* Links and badges container */
.publication-meta-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    min-height: 26px;
}

.publication-meta-row .publication-links {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.publication-meta-row .publication-badges {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.publication-meta-row .publication-badges::before {
    content: "|";
    color: #8f8f8f;
    font-size: 1.7rem;
    line-height: 1;
    font-weight: 300;
    display: inline-block;
    margin-left: -0.4rem;
    margin-right: 0.1rem;
    transform: translateY(-1px);
}

.publication-badges > span,
.publication-badges > div {
    display: inline-flex;
    align-items: center;
}

/* Author Links */
.publication-authors a {
    color: inherit;
    text-decoration: none;
    border-bottom: 1px dotted #999;
}

.publication-authors a:hover {
    color: #b12b32;
    border-bottom-color: #b12b32;
}

.dark-mode .publication-authors a:hover {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* Hidden class for filtering */
.publication.hidden {
    display: none;
}

.year-group.hidden {
    display: none;
}

/* No results message */
.no-results {
    text-align: center;
    padding: 2rem;
    color: #666666;
    display: none;
}

.no-results.visible {
    display: block;
}

.dark-mode .no-results {
    color: var(--text-secondary);
}