/* ============================================
   Mante Lab
   Design System & Shared Styles
   ============================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Libre+Baskerville:ital,wght@0,400;0,700;1,400&display=swap');

/* ============================================
   Design Tokens
   ============================================ */
:root {
    /* Colors */
    --bg: #111213;
    --fg: #ebe7e2;
    --fg-soft: #cfc9c1;
    --muted: #8c8780;
    --rule: #2a2b2c;
    --accent: #8c8780;
    --icon: #eae5df;
    --icon-hover: #d9a892;

    /* Typography */
    --font-heading: 'Libre Baskerville', Baskerville, 'Times New Roman', serif;
    --font-body: 'Libre Baskerville', Baskerville, 'Times New Roman', serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 5rem;

    /* Layout */
    --max-width: 1200px;
    --header-height: 6rem;
    --title-size: 1.8rem;
    --box-radius: 12px;
    color-scheme: dark;
}

:root[data-theme="light"] {
    --bg: #f6f2ee;
    --fg: #1f1c1a;
    --fg-soft: #4a4540;
    --muted: #7b736a;
    --rule: #ddd5ce;
    --accent: #8c8780;
    --icon: #2a2522;
    --icon-hover: #b86a4b;
    color-scheme: light;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 0.875rem;
    line-height: 1.7;
    color: var(--fg);
    background-color: var(--bg);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Typography
   ============================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 500;
    line-height: 1.3;
    color: var(--fg);
}

h1 {
    font-size: 2.5rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 1.75rem;
    letter-spacing: -0.01em;
    margin-bottom: var(--space-md);
}

h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

p {
    color: var(--fg-soft);
    margin-bottom: var(--space-sm);
}

a {
    color: var(--icon);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--icon-hover);
}

/* ============================================
   Layout
   ============================================ */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ============================================
   Header
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--bg);
    z-index: 100;
}

.header .container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 400;
    color: var(--fg);
    letter-spacing: -0.01em;
    line-height: 1.2;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    height: 2.5rem;
    width: auto;
}

.logo:hover {
    color: var(--fg);
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-link {
    font-size: 1.25rem;
    color: var(--muted);
    transition: color 0.2s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--fg);
}

.nav-link.active {
    color: var(--fg);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    right: 0;
    height: 1px;
    background-color: var(--accent);
}

.theme-toggle {
    border: none;
    background: transparent;
    color: var(--muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: color 0.2s ease;
    flex-shrink: 0;
    padding: 0;
    font-size: 1.25rem;
    line-height: 1;
}

.theme-toggle:hover {
    color: var(--fg);
}

.theme-toggle:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.inline-nav-link {
    color: var(--muted);
    transition: color 0.2s ease;
}

.inline-nav-link:hover {
    color: var(--fg);
}

/* ============================================
   Main Content
   ============================================ */
.main {
    flex: 1;
    padding-top: calc(var(--header-height) + var(--space-2xl));
    padding-bottom: var(--space-2xl);
}

/* Two-column layout for homepage */
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
    min-height: calc(100vh - var(--header-height) - var(--space-2xl) * 2);
}

.hero-content {
    max-width: 520px;
}

.hero-title {
    font-size: var(--title-size);
    margin-bottom: var(--space-lg);
    line-height: 1.2;
}

.hero-description {
    font-size: 0.9375rem;
    color: var(--fg-soft);
    line-height: 1.8;
    text-align: justify;
}

.animation-container {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-video {
    width: 100%;
    max-height: 400px;
    object-fit: contain;
    border-radius: 20px;
    mix-blend-mode: screen;
}

/* ============================================
   Page Content
   ============================================ */
.back-link-container {
    display: flex;
    justify-content: flex-end;
    margin-bottom: var(--space-md);
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.8125rem;
    font-family: var(--font-body);
    color: var(--muted);
    margin-left: auto;
}

.back-link::before {
    content: '←';
}

.back-link:hover {
    color: var(--fg);
}

.page-title {
    font-size: var(--title-size);
    margin-bottom: var(--space-lg);
}

.section {
    margin-bottom: var(--space-2xl);
}

.section-compact {
    margin-top: calc(-1 * var(--space-md));
    margin-bottom: calc(var(--space-2xl) - var(--space-md));
}

.section-title {
    color: var(--fg);
    font-size: var(--title-size);
    padding-bottom: var(--space-sm);
    margin-bottom: var(--space-md);
}

.section-divider {
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--rule);
}

.section.section-divider {
    margin-bottom: var(--space-lg);
}

.section-divider-top {
    padding-top: var(--space-lg);
    border-top: 1px solid var(--rule);
}

.research-area-block,
.section-divider-top {
    scroll-margin-top: calc(var(--header-height) + var(--space-lg));
}

.section-links {
    display: flex;
    align-items: stretch;
    gap: var(--space-xs);
    flex-wrap: wrap;
    padding-bottom: 0;
    margin-top: var(--space-md);
}

.section-link {
    white-space: normal;
    flex: 1 1 180px;
    min-height: 3.6rem;
    text-align: center;
    line-height: 1.2;
    padding: 0.6rem 0.85rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--fg);
}

.section-link:hover {
    color: var(--fg);
    border-color: var(--fg);
}

/* Research Areas */
.research-area-block {
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--rule);
}

.research-area-block:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.highdim-intro-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(260px, 1fr);
    gap: var(--space-lg);
    align-items: center;
    margin-bottom: var(--space-sm);
    position: relative;
}

.highdim-intro-layout .hero-description {
    margin-bottom: 0;
}

.highdim-intro-figure {
    width: fit-content;
    max-width: 92%;
    margin: 0;
    align-self: center;
    justify-self: center;
}

.highdim-inferring-figure {
    max-width: 88%;
}

.highdim-intro-figure-video {
    width: 100%;
    max-width: 100%;
    isolation: isolate;
}

.highdim-intro-figure-video .highdim-intro-image {
    width: 100%;
    mix-blend-mode: screen;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

.highdim-intro-figure-video-neural {
    max-width: 70%;
    transform: translateX(-1.0rem);
}

.highdim-intro-figure-video-torre {
    place-self: center;
    transform: scale(1.4) translate(-1.5rem, -2.0rem);
}

.highdim-intro-figure-video-guiomar {
    place-self: center;
    transform: scale(1.7) translateY(-1.5rem);
}

.highdim-intro-figure-video-monkeys {
    transform: translateY(-1.5rem);
}

.highdim-intro-image {
    width: auto;
    max-width: 100%;
    height: auto;
    border-radius: var(--box-radius);
    object-fit: contain;
    display: block;
}

.highdim-image-credit {
    position: absolute;
    right: 0;
    bottom: auto;
    margin: 0;
    padding: 0;
    font-family: var(--font-body);
    font-size: 0.75rem;
    line-height: 1.8;
    color: var(--fg-soft);
    background: none;
    border-radius: 0;
    pointer-events: none;
    text-align: right;
    white-space: nowrap;
}

.apply-card.research-publications-card {
    text-align: left;
    margin-top: var(--space-md);
    padding: var(--space-md);
    height: 220px;
    display: flex;
    flex-direction: column;
    border-radius: var(--box-radius);
}

.apply-card.research-publications-card h3 {
    text-align: left;
    margin: 0 0 var(--space-sm) 0;
    font-size: 1rem;
    font-weight: 700;
}

.apply-card.research-publications-card .publication-list {
    margin-top: var(--space-sm);
    flex: 1;
    overflow-y: auto;
    padding-right: 0.35rem;
    scrollbar-width: thin;
    scrollbar-color: var(--muted) transparent;
}

.apply-card.research-publications-card .publication-list::-webkit-scrollbar {
    width: 6px;
}

.apply-card.research-publications-card .publication-list::-webkit-scrollbar-track {
    background: transparent;
}

.apply-card.research-publications-card .publication-list::-webkit-scrollbar-thumb {
    background-color: var(--muted);
    border-radius: 999px;
}

.apply-card.research-publications-card .publication-item {
    padding: var(--space-xs) 0;
    gap: var(--space-sm);
}

.apply-card.research-publications-card .publication-authors,
.apply-card.research-publications-card .publication-title,
.apply-card.research-publications-card .publication-venue {
    font-size: 0.8125rem;
}

/* Research Areas Grid */
.research-areas-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.research-area-box {
    padding: var(--space-lg);
    border: 1px solid var(--rule);
    border-radius: 4px;
    text-align: center;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 120px;
}

.research-area-box:hover {
    border-color: var(--accent);
    background-color: rgba(184, 106, 75, 0.05);
}

.research-area-title {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 400;
    color: var(--fg);
    margin: 0;
    line-height: 1.4;
}

/* Team Lead Standalone */
.team-lead-header {
    align-items: flex-start;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.team-lead-header .member-card {
    flex: 0 1 clamp(280px, 33%, 360px);
}


/* Two-Column Work Layout */
.work-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
}

.work-column {
    display: flex;
    flex-direction: column;
}

.column-title {
    font-size: var(--title-size);
    margin-bottom: var(--space-lg);
    color: var(--fg);
}

.column-blocks {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.no-openings-message {
    text-align: left;
    color: var(--fg-soft);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    line-height: 1.8;
    padding: var(--space-lg) 0;
}

/* Compact Opportunities Grid */
.opportunities-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.opportunity-compact {
    padding: var(--space-md);
    border: 1px solid var(--rule);
    border-radius: 4px;
    text-align: center;
    transition: all 0.2s ease;
}

.opportunity-compact:hover {
    border-color: var(--accent);
    background-color: rgba(184, 106, 75, 0.05);
}

.opportunity-compact .opportunity-title {
    font-size: 1rem;
    margin-bottom: var(--space-xs);
}

.opportunity-compact .opportunity-type {
    margin-bottom: 0;
}

/* ============================================
   Cards & Items
   ============================================ */
.card {
    padding: var(--space-md);
    border: 1px solid var(--rule);
    border-radius: 4px;
    margin-bottom: var(--space-md);
    transition: border-color 0.2s ease;
}

.card:hover {
    border-color: var(--muted);
}

.card-title {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    margin-bottom: var(--space-xs);
}

.card-description {
    color: var(--muted);
    font-size: 0.8125rem;
}

/* Team member grid */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-md);
}

.member-card {
    position: relative;
    padding: var(--space-md);
    border: 1px solid var(--rule);
    border-radius: var(--box-radius);
    transition: border-color 0.2s ease;
}

.member-card:hover {
    border-color: var(--muted);
}

.member-icons {
    position: absolute;
    bottom: var(--space-sm);
    right: var(--space-sm);
    display: flex;
    gap: 0.5rem;
}

.member-icon {
    color: var(--muted);
    font-size: 1.25rem;
    transition: color 0.2s ease;
}

.member-icon:hover {
    color: var(--fg);
}

.member-name {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    margin-bottom: var(--space-xs);
}

.member-role {
    color: var(--accent);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.member-bio {
    color: var(--muted);
    font-size: 0.8125rem;
}

/* ============================================
   Work With Us
   ============================================ */
.opportunity {
    padding: var(--space-lg);
    border: 1px solid var(--rule);
    border-radius: 4px;
    margin-bottom: var(--space-md);
    transition: all 0.2s ease;
}

.opportunity:hover {
    border-color: var(--accent);
    background-color: rgba(184, 106, 75, 0.05);
}

.opportunity-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-bottom: var(--space-xs);
}

.opportunity-type {
    color: var(--accent);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.opportunity-description {
    color: var(--fg-soft);
    font-size: 0.875rem;
    margin-bottom: var(--space-md);
}

.contact-info {
    padding: var(--space-lg);
    border: 1px solid var(--rule);
    border-radius: var(--box-radius);
    background-color: rgba(255, 255, 255, 0.02);
}

.contact-info h3 {
    margin-bottom: var(--space-sm);
}

.contact-email {
    color: var(--accent);
    font-size: 0.9375rem;
}

.contact-email:hover {
    color: var(--icon-hover);
}

/* Apply Button */
.apply-card {
    text-align: center;
    padding: var(--space-xl);
}

.apply-button {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
    padding: var(--space-md) var(--space-xl);
    background: transparent;
    border: 1px solid var(--accent);
    border-radius: var(--box-radius);
    color: var(--muted);
    font-family: var(--font-body);
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.2s ease;
}

.apply-button:hover {
    border-color: var(--fg);
    background-color: transparent;
    color: var(--fg);
}

.apply-button-text {
    letter-spacing: 0.02em;
}

.apply-button-arrow {
    transition: transform 0.3s ease;
    font-size: 1.1em;
}

.apply-button:hover .apply-button-arrow {
    transform: translateX(4px);
}

/* ============================================
   Publications
   ============================================ */
.publication-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.publication-item {
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--rule);
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-md);
}

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

.publication-details {
    flex: 1;
    min-width: 0;
}

.publication-actions {
    display: flex;
    align-items: center;
}

.publication-action {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--muted);
    border: 1px solid var(--accent);
    border-radius: var(--box-radius);
    padding: 0.25rem 0.65rem;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.publication-action:hover {
    color: var(--fg);
    border-color: var(--fg);
}

.publication-action i {
    font-size: 0.85rem;
}

.publication-action.section-link {
    color: var(--fg);
    border-color: var(--rule);
}

.publication-action.section-link:hover {
    color: var(--fg);
    border-color: var(--muted);
}

.resource-action {
    text-transform: none;
    letter-spacing: 0.02em;
}

.resource-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin: var(--space-sm) 0;
}

.publication-authors {
    color: var(--fg);
    font-size: 0.875rem;
}

.publication-title {
    color: var(--fg-soft);
    font-size: 0.875rem;
    font-style: italic;
    margin: 0 0.25rem;
}

.publication-venue {
    color: var(--muted);
    font-size: 0.875rem;
}

.citation-list .publication-item {
    padding: 0;
    border-bottom: none;
}

.publication-year {
    font-size: 1.25rem;
    color: var(--fg);
    margin-top: var(--space-lg);
    margin-bottom: var(--space-sm);
    padding-bottom: var(--space-xs);
    border-bottom: 1px solid var(--rule);
}

.publication-year:first-child {
    margin-top: 0;
}

.loading-text {
    color: var(--muted);
    font-style: italic;
}

.error-text {
    color: #b86a4b;
    font-style: italic;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--rule);
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--muted);
    font-size: 0.75rem;
}

.footer-logos {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.footer-logo {
    height: 2rem;
    width: auto;
    opacity: 0.7;
    transition: opacity 0.2s ease;
}

.footer-logo-eth {
    height: 2.5rem;
}

.footer-logo:hover {
    opacity: 1;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    :root {
        --space-lg: 1.5rem;
        --space-xl: 2rem;
        --space-2xl: 3rem;
        --title-size: 2.1rem;
    }

    .hero-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .animation-container {
        height: 300px;
        order: -1;
    }

    .team-grid {
        grid-template-columns: 1fr;
    }

    .work-columns {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .research-areas-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .highdim-intro-layout {
        grid-template-columns: 1fr;
    }

    .highdim-intro-figure {
        max-width: 520px;
    }

    .highdim-inferring-figure {
        max-width: 500px;
    }

    .highdim-image-credit {
        position: static;
        display: block;
        margin-top: var(--space-xs);
        text-align: right;
    }
}

@media (max-width: 640px) {
    :root {
        --title-size: 1.9rem;
    }

    .nav {
        gap: var(--space-sm);
    }

    .nav-link {
        font-size: 0.75rem;
    }

    .theme-toggle {
        font-size: 0.75rem;
    }

    .logo {
        font-size: 1.75rem;
    }

    .hero-title {
        font-size: var(--title-size);
    }

    .page-title {
        font-size: var(--title-size);
    }

    .footer-content {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }

    .research-areas-grid {
        grid-template-columns: 1fr;
    }

    .publication-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .publication-actions {
        margin-top: var(--space-xs);
    }
}