/* ========================================
   REFINED MOCKUP - Shared Styles
   Academic Warm base + Muted Iceberg accents
   Multi-page layout with story badges
   ======================================== */

:root {
    /* Academic Warm - Primary Palette */
    --cream: #F3ECE3;
    --cream-dark: #F0E6D8;
    --warm-gray: #6B6560;
    --charcoal: #2D2926;
    --coral: #E07A5F;
    --coral-light: #F4A090;
    --soft-blue: #5E8B9C;
    --soft-blue-light: #A8C5CE;
    --gold: #C9A962;
    --white: #FFFFFF;

    /* Muted Iceberg - Secondary Palette */
    --slate-light: #E8EDF0;
    --slate-mid: #8FA3B0;
    --slate-deep: #4A6B7C;
    --slate-dark: #3D5A6C;
    --slate-abyss: #2A4A5A;
}

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

body {
    font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--cream);
    color: var(--charcoal);
    line-height: 1.6;
    font-size: 16px;
}

/* ==================== NAVIGATION ==================== */
nav {
    background: var(--white);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

nav .nav-container {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav .logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 2rem;
    width: 2rem;
    height: 2rem;
    overflow: hidden;
    text-decoration: none;
}

nav .logo img {
    display: block;
    width: 100%;
    max-width: 100%;
    height: 100%;
    max-height: 100%;
    object-fit: contain;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    color: var(--warm-gray);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
    position: relative;
}

nav a:hover, nav a.active {
    color: var(--coral);
}

nav a.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--coral);
}

/* ==================== MAIN LAYOUT ==================== */
main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

/* ==================== TYPOGRAPHY ==================== */
h1, h2, h3, h4, h5 {
    font-family: 'Playfair Display', Georgia, serif;
}

.section-header {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 2rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--coral);
    display: inline-block;
}

/* ==================== HERO SECTION ==================== */
.hero {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 3rem;
    align-items: start;
    margin-bottom: 3rem;
}

.hero-photo {
    width: 100%;
    aspect-ratio: 3/4;
    background: var(--cream-dark);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--warm-gray);
    font-size: 0.9rem;
}

.hero-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-content h1 {
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--charcoal);
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.hero-content .title {
    font-size: 1.2rem;
    color: var(--coral);
    font-weight: 500;
    margin-bottom: 1rem;
}

.hero-content .affiliations {
    font-size: 1rem;
    color: var(--warm-gray);
    margin-bottom: 1.5rem;
    line-height: 1.9;
}

.hero-content .affiliations a {
    color: var(--soft-blue);
    text-decoration: none;
}

.hero-content .affiliations a:hover {
    text-decoration: underline;
}

.hero-content .bio {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

/* Project Links */
.projects {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.2rem;
    background: var(--white);
    border: 1px solid var(--cream-dark);
    border-radius: 6px;
    color: var(--charcoal);
    text-decoration: none;
    font-size: 1rem;
    transition: all 0.2s;
}

.project-link:hover {
    border-color: var(--coral);
    box-shadow: 0 4px 12px rgba(224, 122, 95, 0.15);
}

.project-link .icon {
    font-size: 1.1rem;
}

/* Contact Info */
.contact-info {
    font-size: 0.95rem;
    color: var(--warm-gray);
}

.contact-info a {
    color: var(--soft-blue);
    text-decoration: none;
}

.contact-info a:hover {
    text-decoration: underline;
}

/* ==================== CONTACT SECTION (homepage) ==================== */
.contact-section {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--cream-dark);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.contact-card {
    background: var(--white);
    border-radius: 10px;
    padding: 1.4rem 1.6rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.contact-card h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1rem;
    font-weight: 600;
    color: var(--charcoal);
    margin-bottom: 0.5rem;
}

.contact-card p {
    font-size: 0.9rem;
    color: var(--warm-gray);
    line-height: 1.7;
}

.contact-card a {
    color: var(--soft-blue);
    text-decoration: none;
}

.contact-card a:hover {
    text-decoration: underline;
}

/* ==================== RESEARCH PAGE ==================== */

.research-intro {
    margin-bottom: 2rem;
}

.research-intro-story {
    background: var(--white);
    border-left: 3px solid var(--coral);
    border-radius: 0 8px 8px 0;
    padding: 1rem 1.4rem;
    font-size: 1.05rem;
    color: var(--charcoal);
    line-height: 1.8;
}

/* Filter Chips */
.filter-chips {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}

.filter-chip {
    padding: 0.6rem 1.3rem;
    font-size: 0.95rem;
    font-weight: 500;
    border: 1px solid var(--cream-dark);
    background: var(--white);
    border-radius: 100px;
    color: var(--warm-gray);
    cursor: pointer;
    transition: all 0.2s;
}

.filter-chip:hover {
    border-color: var(--coral-light);
    color: var(--coral);
}

.filter-chip.active {
    background: var(--charcoal);
    border-color: var(--charcoal);
    color: var(--white);
}

/* Research Category */
.research-category {
    margin-bottom: 3rem;
}

.category-title {
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--charcoal);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.category-title .count {
    font-family: 'Source Sans 3', sans-serif;
    font-size: 0.85rem;
    color: var(--warm-gray);
    font-weight: 400;
}

/* Paper Cards */
.paper-card {
    background: var(--white);
    border-radius: 10px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    transition: all 0.2s;
    position: relative;
}

.paper-card:hover {
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
    transform: translateY(-2px);
}

.paper-header {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.paper-title {
    font-size: 1.15rem;
    font-weight: 500;
    color: var(--charcoal);
    margin-bottom: 0.5rem;
    line-height: 1.4;
    flex: 1;
}

.paper-authors {
    font-size: 0.9rem;
    color: var(--warm-gray);
    margin-bottom: 0.5rem;
}

.paper-venue {
    font-size: 0.9rem;
    color: var(--soft-blue);
    font-style: italic;
    margin-bottom: 1rem;
}

.paper-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.paper-btn {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    font-weight: 500;
    border-radius: 4px;
    text-decoration: none;
    transition: all 0.2s;
    border: 1px solid;
}

.paper-btn.pdf {
    background: var(--coral);
    border-color: var(--coral);
    color: var(--white);
}

.paper-btn.pdf:hover {
    background: #c96a52;
}

.paper-btn.slides {
    background: var(--soft-blue);
    border-color: var(--soft-blue);
    color: var(--white);
}

.paper-btn.slides:hover {
    background: #4d7a8a;
}

.paper-btn.data, .paper-btn.code {
    background: var(--gold);
    border-color: var(--gold);
    color: var(--white);
}

.paper-btn.secondary {
    background: transparent;
    border-color: var(--cream-dark);
    color: var(--warm-gray);
}

.paper-btn.secondary:hover {
    border-color: var(--coral);
    color: var(--coral);
}

/* Story Badge */
.story-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.35rem 0.8rem;
    background: var(--slate-light);
    border-radius: 100px;
    font-size: 0.88rem;
    color: var(--slate-deep);
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    flex-shrink: 0;
}

.story-badge:hover {
    background: var(--slate-mid);
    color: var(--white);
}

.story-badge .icon {
    font-size: 0.85rem;
}

/* Story Panel */
.story-panel {
    display: none;
    margin-top: 1rem;
    padding: 1.25rem;
    background: linear-gradient(135deg, var(--slate-light) 0%, var(--cream-dark) 100%);
    border-radius: 8px;
    border-left: 3px solid var(--slate-deep);
    animation: slideDown 0.3s ease;
}

.story-panel.visible {
    display: block;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.story-panel h4 {
    font-family: 'Source Sans 3', sans-serif;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--slate-deep);
    margin-bottom: 0.5rem;
    margin-top: 1rem;
}

.story-panel h4:first-child {
    margin-top: 0;
}

.story-panel p {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--charcoal);
}

.submission-history {
    font-family: monospace;
    font-size: 0.85rem;
    padding: 0.5rem 0.6rem;
    background: var(--white);
    border-radius: 4px;
    display: block;
    line-height: 1.9;
    word-break: break-word;
}

.submission-history .dr {
    color: #c0392b;
}

.submission-history .rr {
    color: var(--gold);
}

.submission-history .accepted {
    color: #27ae60;
}

/* Category intro — full-width card, soft-blue left border */
.category-intro {
    background: var(--white);
    border-left: 3px solid var(--soft-blue);
    border-radius: 0 8px 8px 0;
    padding: 1rem 1.4rem;
    font-size: 1rem;
    color: var(--warm-gray);
    line-height: 1.8;
    margin-bottom: 1.8rem;
}

/* Research subsections (within a category) */
.research-subsection {
    margin-bottom: 2.5rem;
}

.subsection-title {
    font-family: 'Source Sans 3', sans-serif;
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--coral);
    margin-bottom: 1rem;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid var(--cream-dark);
}

/* Subsection description — full-width card, lighter soft-blue border */
.subsection-desc {
    background: var(--white);
    border-left: 3px solid var(--soft-blue-light);
    border-radius: 0 8px 8px 0;
    padding: 0.9rem 1.3rem;
    font-size: 0.97rem;
    color: var(--warm-gray);
    line-height: 1.8;
    margin-bottom: 1.2rem;
}

/* Inner Dragon feature block — white card with shadow, matching the card family */
.inner-dragon-feature {
    display: grid;
    grid-template-columns: 130px 1fr;
    gap: 1.5rem;
    align-items: start;
    background: var(--white);
    border-left: 3px solid var(--soft-blue-light);
    border-radius: 0 10px 10px 0;
    padding: 1.4rem;
    margin-bottom: 1rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.inner-dragon-feature img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 4px 14px rgba(0,0,0,0.13);
}

.inner-dragon-feature-text p {
    font-size: 0.95rem;
    color: var(--warm-gray);
    line-height: 1.8;
}

.inner-dragon-feature-text strong {
    color: var(--charcoal);
}

@media (max-width: 768px) {
    .inner-dragon-feature {
        grid-template-columns: 1fr;
    }

    .inner-dragon-feature img {
        max-width: 130px;
        margin: 0 auto;
        display: block;
    }
}

/* ==================== CV PAGE ==================== */
.cv-intro {
    margin-bottom: 2rem;
}

.download-cv {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    background: var(--coral);
    color: var(--white);
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: background 0.2s;
}

.download-cv:hover {
    background: #c96a52;
}

.cv-section {
    background: var(--white);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.cv-section h3 {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--coral);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--cream-dark);
}

.cv-grid {
    display: grid;
    gap: 0;
}

.cv-item {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 1.5rem;
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--cream-dark);
}

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

.cv-year {
    font-size: 0.9rem;
    color: var(--warm-gray);
}

.cv-content strong {
    font-weight: 600;
    color: var(--charcoal);
}

.cv-content p {
    font-size: 0.95rem;
    color: var(--warm-gray);
    margin-top: 0.25rem;
}

/* ==================== MEDIA PAGE ==================== */
.media-intro {
    font-size: 1.05rem;
    color: var(--warm-gray);
    margin-bottom: 2rem;
    max-width: none;
}

.media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.media-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}

.media-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.1);
}

.media-card-image {
    height: 160px;
    background: linear-gradient(135deg, var(--soft-blue) 0%, var(--coral) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 3rem;
}

.media-card-content {
    padding: 1.5rem;
}

.media-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.media-card p {
    font-size: 0.95rem;
    color: var(--warm-gray);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.media-card a {
    color: var(--coral);
    text-decoration: none;
    font-weight: 500;
}

.media-card a:hover {
    text-decoration: underline;
}

/* ==================== GRAVEYARD SECTION ==================== */
.graveyard-section {
    background: linear-gradient(180deg, var(--slate-dark) 0%, var(--slate-abyss) 100%);
    padding: 3rem 2rem;
    margin: 3rem -2rem -3rem;
    color: var(--white);
}

.graveyard-section .section-container {
    max-width: 1100px;
    margin: 0 auto;
}

.graveyard-section .section-header {
    color: rgba(255, 255, 255, 0.8);
    border-bottom-color: var(--slate-mid);
}

.graveyard-intro {
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 2rem;
    font-size: 1rem;
}

.graveyard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.graveyard-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 1.5rem;
}

.graveyard-item h4 {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 0.25rem;
}

.graveyard-item .status {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--coral-light);
    margin-bottom: 0.75rem;
}

.graveyard-item p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.7;
}

.graveyard-item a {
    color: var(--white);
    font-weight: 700;
    text-decoration-color: rgba(255, 255, 255, 0.7);
}

.graveyard-item a:hover {
    color: var(--coral-light);
    text-decoration-color: var(--coral-light);
}

/* ==================== FOOTER ==================== */
footer {
    background: var(--charcoal);
    color: var(--cream);
    padding: 2rem;
    text-align: center;
    margin-top: 4rem;
}

.footer-line {
    margin: 0;
}

.footer-favicon {
    width: 18px;
    height: 18px;
    display: inline-block;
    vertical-align: middle;
}

.footer-favicon-light {
    filter: brightness(0) invert(1);
}

.footer-credit {
    margin-top: 0.45rem;
    font-size: 0.85rem;
    color: rgba(248, 244, 232, 0.72);
}

footer a {
    color: var(--coral-light);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* Research page with graveyard needs no footer margin */
body:has(.graveyard-section) footer {
    margin-top: 0;
}

/* Ensure main has no bottom padding when graveyard present */
main:has(.graveyard-section) {
    padding-bottom: 0;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .hero {
        grid-template-columns: 1fr;
    }

    .hero-photo {
        max-width: 220px;
        margin: 0 auto;
    }

    nav ul {
        gap: 1rem;
        font-size: 0.85rem;
    }

    .hero-content h1 {
        font-size: 2rem;
        text-align: center;
    }

    .hero-content .title {
        text-align: center;
    }

    .cv-item {
        grid-template-columns: 1fr;
        gap: 0.25rem;
    }

    .cv-year {
        font-weight: 600;
        color: var(--soft-blue);
    }

    .paper-header {
        flex-direction: column;
        gap: 0.5rem;
    }

    .story-badge {
        align-self: flex-start;
    }
}