/* ============================================
   Lumina Research — Custom Theme Styles
   Light & Clean Edition
   ============================================ */

:root {
    --lumina-bg: #FFFFFF;
    --lumina-bg-light: #F8F9FA;
    --lumina-gold: #FFCC4D;
    --lumina-orange: #FF8F00;
    --lumina-text: #1A1A2E;
    --lumina-text-secondary: #333333;
    --lumina-text-muted: #5f6368;
    --lumina-border: rgba(0,0,0,0.08);
    --lumina-card-bg: #FFFFFF;
    --lumina-card-shadow: 0 1px 4px rgba(0,0,0,0.06), 0 2px 12px rgba(0,0,0,0.04);
    --lumina-card-shadow-hover: 0 4px 16px rgba(0,0,0,0.10), 0 8px 32px rgba(0,0,0,0.06);
    --lumina-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* ---- Global Overrides ---- */
body {
    font-family: var(--lumina-font) !important;
    background: var(--lumina-bg) !important;
    color: var(--lumina-text) !important;
    font-size: 21px !important;
    line-height: 1.8 !important;
}

.site-content {
    background: var(--lumina-bg);
}

/* ---- Header / Nav ---- */
.gh-head {
    background: var(--lumina-bg) !important;
    border-bottom: 1px solid var(--lumina-border);
}

.gh-head-logo img {
    max-height: 36px;
}

.gh-head-menu a {
    color: var(--lumina-text-secondary) !important;
    font-size: 1.1rem;
    font-weight: 500;
}

.gh-head-menu a:hover {
    color: var(--lumina-orange) !important;
}

.gh-head-button {
    background: var(--lumina-gold) !important;
    color: var(--lumina-text) !important;
    font-weight: 600;
    border-radius: 6px;
    padding: 8px 18px;
    font-size: 0.95rem;
}

.gh-head-button:hover {
    background: var(--lumina-orange) !important;
    color: #fff !important;
}

.gh-head-link {
    color: var(--lumina-text-muted) !important;
    font-size: 0.95rem;
}

.gh-head-link:hover {
    color: var(--lumina-orange) !important;
}

/* ---- Hero Banner ---- */
.lumina-hero {
    background: linear-gradient(135deg, #F8F9FA 0%, #FFFFFF 100%);
    padding: 48px 24px;
    text-align: center;
    max-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--lumina-border);
}

.lumina-hero-inner {
    max-width: 600px;
    margin: 0 auto;
}

.lumina-hero-logo {
    max-height: 48px;
    margin-bottom: 12px;
}

.lumina-hero-title {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--lumina-text);
    margin: 0 0 8px;
}

.lumina-hero-slogan {
    font-size: 1.4rem;
    color: var(--lumina-text-muted);
    margin: 0 0 20px;
    line-height: 1.6;
}

.lumina-subscribe-btn {
    display: inline-block;
    background: var(--lumina-gold);
    color: var(--lumina-text);
    font-weight: 600;
    font-size: 1rem;
    padding: 10px 28px;
    border-radius: 6px;
    text-decoration: none;
    transition: background 0.2s;
}

.lumina-subscribe-btn:hover {
    background: var(--lumina-orange);
    color: #fff;
}

/* ---- Sections ---- */
.lumina-section {
    padding: 48px 0;
    border-bottom: 1px solid var(--lumina-border);
}

.lumina-section:last-child {
    border-bottom: none;
}

.lumina-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
}

.lumina-section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--lumina-text);
    margin: 0;
    letter-spacing: -0.01em;
}

.lumina-view-all {
    font-size: 0.95rem;
    color: var(--lumina-orange);
    text-decoration: none;
    font-weight: 500;
    white-space: nowrap;
    transition: color 0.2s;
}

.lumina-view-all:hover {
    color: var(--lumina-gold);
}

/* ---- Report Cards (Grid) ---- */
.lumina-cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

@media (max-width: 900px) {
    .lumina-cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 560px) {
    .lumina-cards-grid {
        grid-template-columns: 1fr;
    }
}

.lumina-card-report {
    background: var(--lumina-card-bg);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--lumina-border);
    box-shadow: var(--lumina-card-shadow);
    transition: transform 0.2s, box-shadow 0.2s;
}

.lumina-card-report:hover {
    transform: translateY(-3px);
    box-shadow: var(--lumina-card-shadow-hover);
}

.lumina-card-image-link {
    display: block;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.lumina-card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.lumina-card-report:hover .lumina-card-image {
    transform: scale(1.03);
}

.lumina-card-body {
    padding: 18px;
}

.lumina-card-link {
    text-decoration: none;
    color: inherit;
}

.lumina-card-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--lumina-text);
    margin: 0 0 8px;
    line-height: 1.4;
}

.lumina-card-excerpt {
    font-size: 1.15rem;
    color: var(--lumina-text-muted);
    margin: 0 0 12px;
    line-height: 1.6;
}

.lumina-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.88rem;
    color: var(--lumina-text-muted);
}

.lumina-card-cta {
    color: var(--lumina-orange);
    font-weight: 600;
    text-decoration: none;
    font-size: 0.88rem;
}

.lumina-card-cta:hover {
    color: var(--lumina-gold);
}

/* ---- List Layout (Papers & News) ---- */
.lumina-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.lumina-list-item {
    border-bottom: 1px solid var(--lumina-border);
}

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

.lumina-list-link {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
    padding: 18px 0;
    text-decoration: none;
    color: inherit;
    transition: background 0.15s;
    border-radius: 6px;
}

.lumina-list-link:hover {
    background: var(--lumina-bg-light);
    padding-left: 12px;
    padding-right: 12px;
    margin-left: -12px;
    margin-right: -12px;
}

.lumina-list-content {
    flex: 1;
    min-width: 0;
}

.lumina-list-title {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--lumina-text);
    margin: 0 0 6px;
    line-height: 1.4;
}

.lumina-list-link:hover .lumina-list-title {
    color: var(--lumina-orange);
}

.lumina-list-excerpt {
    font-size: 1.15rem;
    color: var(--lumina-text-muted);
    margin: 0;
    line-height: 1.6;
}

.lumina-list-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
    font-size: 0.85rem;
    color: var(--lumina-text-muted);
    white-space: nowrap;
    padding-top: 2px;
}

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

.site-footer a {
    color: var(--lumina-text-muted) !important;
}

.site-footer a:hover {
    color: var(--lumina-orange) !important;
}

/* ---- Hide Casper default hero on home ---- */
.site-header-content {
    display: none !important;
}

/* ---- Misc ---- */
.inner {
    max-width: 1280px;
}

/* ---- Language Switcher ---- */
.lumina-lang-switch {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-right: 12px;
}

.lumina-lang-btn {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--lumina-text-muted) !important;
    text-decoration: none;
    padding: 4px 8px;
    border-radius: 4px;
    transition: color 0.2s, background 0.2s;
}

.lumina-lang-btn:hover {
    color: var(--lumina-orange) !important;
    background: var(--lumina-bg-light);
}

.lumina-lang-sep {
    color: var(--lumina-border);
    font-size: 0.85rem;
}

/* Search icon color */
.gh-icon-btn svg {
    color: var(--lumina-text-muted);
}

.gh-icon-btn:hover svg {
    color: var(--lumina-orange);
}

/* ---- Post / Page content typography ---- */
.gh-content {
    font-size: 21px;
    line-height: 1.85;
    color: var(--lumina-text-secondary);
}

.gh-content h1 { font-size: 2.8rem; color: var(--lumina-text); }
.gh-content h2 { font-size: 2.2rem; color: var(--lumina-text); }
.gh-content h3 { font-size: 1.8rem; color: var(--lumina-text); }
.gh-content h4 { font-size: 1.5rem; color: var(--lumina-text); }

.gh-content a {
    color: var(--lumina-orange);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.gh-content a:hover {
    color: var(--lumina-gold);
}

/* Override any dark-mode Casper defaults */
.has-cover .gh-head,
.dark-mode .gh-head {
    background: var(--lumina-bg) !important;
}

.gh-head-menu .nav a,
.gh-head-menu .nav li a {
    color: var(--lumina-text-secondary) !important;
    font-size: 1rem;
}