:root {
    --bg-color: #f0f4f8;
    --card-bg: #ffffff;
    --text-color: #2c3e50;
    --text-secondary: #5e6d82;
    --text-gpumd: rgb(24, 103, 174);
    --text-kit: rgb(193, 136, 82);
    --text-blue: #3498db;
    --border-color: #eaeaea;
    --shadow-soft: 0 10px 40px rgba(0, 0, 0, 0.04);
    --shadow-hover: 0 20px 50px rgba(0, 0, 0, 0.08);
}

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

body {
    background: #fdfdfd;
    background-image: 
        radial-gradient(at 0% 0%, rgba(24, 103, 174, 0.08) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(180, 152, 125, 0.1) 0px, transparent 50%),
        radial-gradient(at 0% 100%, rgba(24, 103, 174, 0.05) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(180, 152, 125, 0.05) 0px, transparent 50%);
    background-attachment: fixed;
    font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Helvetica, Arial, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Header */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 60px;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0,0,0,0.03);
    z-index: 1000;
    transition: all 0.3s ease;
}

.logo-container {
    height: 32px;
    display: flex;
    align-items: center;
}

.logo {
    height: 100%;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-item {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 16px; 
    transition: color 0.2s;
}

.nav-item:hover {
    color: var(--text-gpumd);
}

/* Main Container */
.home-container {
    width: 75%; /* Updated */
    max-width: 1600px; /* Updated */
    margin: 0 auto;
    padding: 140px 0 80px; /* Updated */
}

/* Hero Section */
.hero-section {
    text-align: center;
    margin-bottom: 100px;
    animation: fadeIn Up 0.8s ease-out;
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -1.5px;
    line-height: 1.1;
}

.hero-title .gpumd {
    color: var(--text-gpumd);
}

.hero-title .kit {
    color: var(--text-kit);
}

.hero-subtitle {
    font-size: 1.6rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-weight: 400;
}

.hero-desc {
    max-width: 900px;
    width: 90%;
    margin: 0 auto 48px auto;
    font-size: 1.15rem;
    color: var(--text-secondary);
    text-align: center;
}

/* Terminal Showcase Styles */
#terminal-showcase {
    margin-bottom: 120px;
}

.showcase-container {
    max-width: 100%; /* Updated */
    margin: 0 auto;
}

.showcase-tabs {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 24px;
}

.showcase-tab {
    padding: 8px 24px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.showcase-tab:hover {
    border-color: var(--text-gpumd);
    color: var(--text-gpumd);
}

.showcase-tab.active {
    background: var(--text-gpumd);
    color: white;
    border-color: var(--text-gpumd);
    box-shadow: 0 4px 12px rgba(24, 103, 174, 0.2);
}

.showcase-window {
    background: #fafbfc;
    border-radius: 12px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.1);
    border: 1px solid rgba(0,0,0,0.05);
    overflow: hidden;
    height: 650px;
    display: flex;
    flex-direction: column;
    position: relative;
}

.showcase-header {
    height: 40px;
    background: #f1f3f5;
    border-bottom: 1px solid #e1e4e8;
    display: flex;
    align-items: center;
    padding: 0 16px;
    position: relative;
}

.showcase-buttons {
    display: flex;
    gap: 8px;
    z-index: 2;
}

.btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

.btn-close { background-color: #ff5f56; border: 1px solid #e0443e; }
.btn-minimize { background-color: #ffbd2e; border: 1px solid #dea123; }
.btn-maximize { background-color: #27c93f; border: 1px solid #1aab29; }

.showcase-title {
    position: absolute;
    left: 0;
    right: 0;
    text-align: center;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 600;
    pointer-events: none;
}

.showcase-body {
    flex: 1;
    position: relative;
    background: #fafbfc;
    overflow: hidden;
}

.showcase-panel {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: 24px;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease;
    display: flex;
    flex-direction: column;
    background: #fafbfc; /* Updated */
}

.showcase-panel.active {
    opacity: 1;
    visibility: visible;
    z-index: 10;
}

.terminal-content {
    white-space: pre-wrap; 
    font-family: 'Fira Code', monospace;
    font-weight: 500;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-color);
}

.cursor {
    display: inline-block;
    width: 8px;
    height: 16px;
    background-color: var(--text-secondary);
    animation: blink 1s step-end infinite;
    margin-left: 4px;
    vertical-align: middle;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.cta-group {
    display: flex;
    gap: 16px;
    justify-content: center;
}

.cta-btn {
    padding: 14px 36px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
}

.cta-primary {
    background: var(--text-gpumd);
    color: white;
    box-shadow: 0 4px 12px rgba(24, 103, 174, 0.3);
}

.cta-primary:hover {
    background: #135d9e;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(24, 103, 174, 0.4);
}

.cta-secondary {
    background: white;
    color: var(--text-color);
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}

.cta-secondary:hover {
    border-color: var(--text-gpumd);
    color: var(--text-gpumd);
    transform: translateY(-2px);
}

/* Features */
.section-header {
    text-align: center;
    margin-bottom: 60px;
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 120px;
}

/* Feature Items Centered */
.feature-item {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 2rem;
    border: 1px solid rgba(24, 103, 174, 0.2); /* Darker border for visibility */
    box-shadow: 
        0 4px 6px -1px rgba(0, 0, 0, 0.05),
        0 2px 4px -1px rgba(0, 0, 0, 0.03),
        inset 0 1px 0 0 rgba(255, 255, 255, 0.8); /* Top highlight */
    position: relative;
    overflow: hidden;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease, border-color 0.3s ease;
    padding: 32px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    will-change: transform;
    isolation: isolate;
}

/* Gradient Backgrounds (Unified Light Blue) - REMOVED */
/* .feature-item::after removed */



.feature-item::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 45%,
        rgba(255, 255, 255, 0.4) 50%,
        transparent 55%
    );
    transform: rotate(45deg);
    pointer-events: none;
    z-index: 2;
    opacity: 0.3; /* Reduced opacity for better performance/look */
}

.feature-item:hover {
    transform: translateY(-6px);
    box-shadow: 
        0 20px 30px -10px rgba(24, 103, 174, 0.15),
        0 10px 10px -5px rgba(0, 0, 0, 0.04),
        0 0 0 1px rgba(24, 103, 174, 0.2);
    border-color: rgba(24, 103, 174, 0.3);
}

.feature-icon {
    font-size: 28px;
    margin-bottom: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    width: 64px;
    height: 64px;
    background: #f0f7ff;
    border-radius: 50%;
    color: var(--text-gpumd);
    transition: transform 0.3s ease;
    position: relative; /* Ensure it's above the divider */
    z-index: 3;
}

.feature-item:hover .feature-icon {
    transform: scale(1.1);
    background: #e6f0fa;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-color);
}

.feature-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    text-align: center;
}

/* Quick Start Redesign */
.quick-start-container {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 2rem;
    border: 1px solid rgba(24, 103, 174, 0.2);
    box-shadow: 
        0 4px 6px -1px rgba(0, 0, 0, 0.05),
        0 2px 4px -1px rgba(0, 0, 0, 0.03),
        inset 0 1px 0 0 rgba(255, 255, 255, 0.8);
    overflow: hidden;
    margin-bottom: 120px;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease, border-color 0.3s ease;
    will-change: transform;
    isolation: isolate;
    position: relative;
}

/* Gradient Backgrounds (Unified Light Blue) - REMOVED */
/* .quick-start-container::after removed */

.quick-start-container:hover {
    transform: translateY(-4px);
    box-shadow: 
        0 20px 30px -10px rgba(24, 103, 174, 0.15),
        0 10px 10px -5px rgba(0, 0, 0, 0.04),
        0 0 0 1px rgba(24, 103, 174, 0.2);
    border-color: rgba(24, 103, 174, 0.3);
}

.qs-header {
    background: #fdfdfd;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.qs-title {
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.qs-title::before {
    content: '';
    display: block;
    width: 10px;
    height: 10px;
    background: #27ae60; /* Green for active/ready */
    border-radius: 50%;
}

.qs-actions a {
    font-size: 0.85rem;
    color: var(--text-gpumd);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.qs-actions a:hover {
    color: var(--text-kit);
}

.qs-body {
    padding: 0;
    background: #f8f9fa; /* Very light grey for code area background */
}

.code-block {
    background: #f8f9fa; /* Light theme background */
    padding: 24px;
    font-family: 'Fira Code', monospace;
    font-size: 14px;
    color: #24292e; /* Dark grey text */
    line-height: 1.7;
    overflow-x: auto;
    border-radius: 0 0 16px 16px;
}

.code-line {
    display: block;
    margin-bottom: 4px;
}

/* Light Theme Syntax Highlighting */
.comment { color: #6a737d; font-style: italic; }
.cmd { color: #005cc5; font-weight: 500; } /* Blue for commands */
.arg { color: #22863a; } /* Green for args */
.path { color: #e36209; } /* Orange for paths */

/* Documentation Grid */
.doc-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 120px;
}

/* Doc Cards Centered */
.doc-card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 2rem;
    border: 1px solid rgba(24, 103, 174, 0.2);
    box-shadow: 
        0 4px 6px -1px rgba(0, 0, 0, 0.05),
        0 2px 4px -1px rgba(0, 0, 0, 0.03),
        inset 0 1px 0 0 rgba(255, 255, 255, 0.8);
    position: relative;
    overflow: hidden;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease, border-color 0.3s ease;
    padding: 32px;
    text-decoration: none;
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    height: 100%;
    will-change: transform;
    isolation: isolate;
}

/* Gradient Backgrounds (Unified Light Blue) - REMOVED */
/* .doc-card::after removed */



.doc-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 45%,
        rgba(255, 255, 255, 0.4) 50%,
        transparent 55%
    );
    transform: rotate(45deg);
    pointer-events: none;
    z-index: 2;
    opacity: 0.3;
}

.doc-card:hover {
    transform: translateY(-6px);
    box-shadow: 
        0 20px 30px -10px rgba(24, 103, 174, 0.15),
        0 10px 10px -5px rgba(0, 0, 0, 0.04),
        0 0 0 1px rgba(24, 103, 174, 0.2);
    border-color: rgba(24, 103, 174, 0.3);
}

.doc-card:hover::before {
    /* No opacity change needed as it's static decoration now, or keep it consistent */
}

/* Ensure content is above decorative elements */
.doc-card > *, 
.feature-item > *, 
.gallery-card > *, 
.pub-item > * {
    position: relative;
    z-index: 5;
}

.doc-icon {
    font-size: 28px;
    margin-bottom: 16px;
    background: #f0f7ff;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    transition: transform 0.3s ease;
    position: relative;
    z-index: 3;
}

.doc-card:hover .doc-icon {
    transform: scale(1.1) rotate(5deg);
    background: #e6f0fa;
}

.doc-card h3 {
    margin-bottom: 12px;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-color);
}

.doc-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    flex-grow: 1;
    line-height: 1.6;
    text-align: center; /* Changed from justify for better mobile view */
}

.doc-arrow {
    margin-top: 20px;
    color: var(--text-gpumd);
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-block;
    padding: 6px 16px;
    background: rgba(24, 103, 174, 0.05);
    border-radius: 20px;
    transition: all 0.2s ease;
}

.doc-card:hover .doc-arrow {
    background: var(--text-gpumd);
    color: white;
    transform: translateY(-2px);
}

/* Gallery Grid */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 80px;
}

.gallery-card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 2rem;
    border: 1px solid rgba(24, 103, 174, 0.2);
    box-shadow: 
        0 4px 6px -1px rgba(0, 0, 0, 0.05),
        0 2px 4px -1px rgba(0, 0, 0, 0.03),
        inset 0 1px 0 0 rgba(255, 255, 255, 0.8);
    position: relative;
    overflow: hidden;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease, border-color 0.3s ease;
    will-change: transform;
    isolation: isolate;
}

/* Gallery doesn't need gradient background as it contains images */

.gallery-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 45%,
        rgba(255, 255, 255, 0.4) 50%,
        transparent 55%
    );
    transform: rotate(45deg);
    pointer-events: none;
    z-index: 2;
    opacity: 0.3;
}

.gallery-card:hover {
    transform: translateY(-6px);
    box-shadow: 
        0 20px 30px -10px rgba(24, 103, 174, 0.15),
        0 10px 10px -5px rgba(0, 0, 0, 0.04),
        0 0 0 1px rgba(24, 103, 174, 0.2);
    border-color: rgba(24, 103, 174, 0.3);
}

.gallery-img {
    width: 100%;
    height: 240px; /* Updated */
    object-fit: contain; /* Updated */
    background: transparent; /* Updated to match glassmorphism */
    border-bottom: 1px solid rgba(24, 103, 174, 0.1); /* Updated border */
    padding: 10px; /* Updated */
}

.gallery-caption {
    padding: 16px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-color);
    text-align: center;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    padding: 80px 0 40px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.95rem;
    color: #f7fafc;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto 60px;
    padding: 0 20px;
}

.footer-column h4 {
    color: #fff;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.footer-column ul {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-column ul li a {
    text-decoration: none;
    color: #a0aec0;
    transition: color 0.2s ease;
    display: inline-block;
}

.footer-column ul li a:hover {
    color: #63b3ed;
}

.ecosystem-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px 24px;
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255,255,255,0.1);
    margin: 0 auto;
    max-width: 1200px;
}

.site-stats {
    text-align: center;
    margin-top: 16px;
    font-size: 0.85rem;
    color: #a0aec0;
    display: flex;
    justify-content: center;
    gap: 24px;
}

.site-stats span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .main-header {
        padding: 0 20px;
        height: 60px;
    }
    
    .nav-links {
        display: none;
    }
    
    .home-container {
        padding-top: 100px;
        width: 90%; /* Updated for mobile */
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .cta-group {
        flex-direction: column;
        width: 100%;
    }
    
    .cta-btn {
        width: 100%;
        text-align: center;
    }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- NEW SECTIONS --- */

/* View All Button */
.view-all-container {
    text-align: center;
    margin-top: 60px;
    margin-bottom: 60px;
}

.view-all-btn {
    display: inline-block;
    padding: 12px 32px;
    background: transparent;
    border: 2px solid var(--text-gpumd);
    color: var(--text-gpumd);
    font-weight: 600;
    border-radius: 30px;
    text-decoration: none;
    transition: all 0.2s ease;
}

.view-all-btn:hover {
    background: var(--text-gpumd);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(24, 103, 174, 0.2);
}

/* Publications Section */
.pub-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.pub-item {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 2rem;
    border: 1px solid rgba(24, 103, 174, 0.2);
    box-shadow: 
        0 4px 6px -1px rgba(0, 0, 0, 0.05),
        0 2px 4px -1px rgba(0, 0, 0, 0.03),
        inset 0 1px 0 0 rgba(255, 255, 255, 0.8);
    position: relative;
    overflow: hidden;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease, border-color 0.3s ease;
    padding: 24px;
    display: flex;
    flex-direction: column;
    height: 100%;
    will-change: transform;
    isolation: isolate;
}

/* Gradient Backgrounds (Unified Light Blue) - REMOVED */
/* .pub-item::after removed */



.pub-item::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 45%,
        rgba(255, 255, 255, 0.4) 50%,
        transparent 55%
    );
    transform: rotate(45deg);
    pointer-events: none;
    z-index: 2;
    opacity: 0.3;
}

.pub-item:hover {
    transform: translateY(-6px);
    box-shadow: 
        0 20px 30px -10px rgba(24, 103, 174, 0.15),
        0 10px 10px -5px rgba(0, 0, 0, 0.04),
        0 0 0 1px rgba(24, 103, 174, 0.2);
    border-color: rgba(24, 103, 174, 0.3);
}

.pub-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 12px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.pub-authors {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex-grow: 1;
}

.pub-journal {
    font-size: 0.85rem;
    color: var(--text-kit);
    font-weight: 500;
    margin-top: auto;
    padding-top: 12px;
    border-top: 1px solid rgba(0,0,0,0.05);
}

/* Community & Citation (Modern Layout) */
.community-citation-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr 2fr; /* 25% 25% 50% ratio */
    gap: 24px;
    margin-bottom: 80px;
}

@media (max-width: 1200px) {
    .community-citation-wrapper {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto auto;
    }
    
    .col-citation {
        grid-column: 1 / -1;
    }
}

@media (max-width: 768px) {
    .community-citation-wrapper {
        grid-template-columns: 1fr;
    }
}

/* Columns */
.col-actions {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.col-qq, .col-citation {
    height: 100%;
}

/* Base Card (Modern Glassmorphism) */
.cc-card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 2rem; /* 32px */
    border: 1px solid rgba(24, 103, 174, 0.2); /* More visible border */
    box-shadow: 
        0 4px 6px -1px rgba(0, 0, 0, 0.05),
        0 2px 4px -1px rgba(0, 0, 0, 0.03),
        inset 0 1px 0 0 rgba(255, 255, 255, 0.8);
    position: relative;
    overflow: hidden;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease, border-color 0.3s ease;
    height: 100%;
    will-change: transform;
    isolation: isolate;
}

.cc-card:hover {
    transform: translateY(-6px);
    box-shadow: 
        0 20px 30px -10px rgba(24, 103, 174, 0.15),
        0 10px 10px -5px rgba(0, 0, 0, 0.04),
        0 0 0 1px rgba(24, 103, 174, 0.2);
    border-color: rgba(24, 103, 174, 0.3);
}

/* Diagonal Divider (Decorative) */
.cc-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 45%,
        rgba(255, 255, 255, 0.4) 50%,
        transparent 55%
    );
    transform: rotate(45deg);
    pointer-events: none;
    z-index: 2;
    opacity: 0.3;
}

/* Gradient Backgrounds */
.cc-bg-decor-1 { /* Blue-Cyan */
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(135deg, rgba(224, 242, 254, 0.4) 0%, rgba(24, 103, 174, 0.05) 100%);
    z-index: -1;
}

.cc-bg-decor-2 { /* Gold-Orange */
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(135deg, rgba(254, 243, 199, 0.4) 0%, rgba(193, 136, 82, 0.05) 100%);
    z-index: -1;
}

.cc-bg-decor-3 { /* Purple-Blue */
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(135deg, rgba(237, 233, 254, 0.4) 0%, rgba(24, 103, 174, 0.08) 100%);
    z-index: -1;
}

.cc-bg-decor-4 { /* Mixed Subtle */
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(120deg, rgba(240, 249, 255, 0.5) 0%, rgba(255, 247, 237, 0.5) 100%);
    z-index: -1;
}

/* Card Content: Action Cards */
.action-card {
    min-height: 160px; /* Reduced from 180px */
}

.card-content {
    padding: 20px 24px;
    display: flex;
    flex-direction: column;
    height: 100%;
    justify-content: space-between;
    position: relative;
    z-index: 5;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.icon-box-modern {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.card-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-color);
    margin: 0;
}

.card-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 20px;
}

/* Buttons */
.modern-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
}

.modern-btn.outline {
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(24, 103, 174, 0.3);
    color: var(--text-gpumd);
}

.modern-btn.outline:hover {
    border-color: var(--text-gpumd);
    color: var(--text-gpumd);
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 4px 12px rgba(24, 103, 174, 0.1);
}

.modern-btn.solid {
    background: #1e293b;
    color: white;
    box-shadow: 0 4px 12px rgba(30, 41, 59, 0.1);
}

.modern-btn.solid:hover {
    background: #0f172a;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(30, 41, 59, 0.2);
}

/* QQ Card Center Layout */
.qq-card {
    min-height: 340px; /* Reduced from 380px */
}

.card-content-center {
    padding: 32px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    position: relative;
    z-index: 5;
}

.card-header-center {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.qr-container-modern {
    padding: 12px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.06);
    border: 1px solid rgba(0,0,0,0.03);
    transition: transform 0.3s ease;
}

.qr-container-modern:hover {
    transform: scale(1.05);
}

.qr-img-modern {
    width: 140px;
    height: 140px;
    border-radius: 8px;
    display: block;
}

.qr-caption-modern {
    display: block;
    margin-top: 10px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-gpumd);
}

/* Citation Card Modern */
.citation-card-modern {
    min-height: 340px; /* Reduced from 380px */
}

.citation-layout {
    padding: 32px;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.citation-header {
    display: flex;
    align-items: center;
    justify-content: space-between; /* Allow button on right */
    gap: 12px;
    margin-bottom: 24px;
}

.citation-body-modern {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.paper-title-modern {
    font-size: 1.3rem;
    font-weight: 800;
    color: #1e293b;
    margin-bottom: 16px;
    line-height: 1.3;
    background: linear-gradient(90deg, #1e293b, #334155);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.paper-meta-modern {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.meta-pill {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.meta-pill.journal {
    background: rgba(24, 103, 174, 0.1);
    color: var(--text-gpumd);
}

.meta-pill.year {
    background: rgba(193, 136, 82, 0.1);
    color: var(--text-kit);
}

.meta-text {
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    color: #64748b;
    background: rgba(0,0,0,0.03);
    padding: 4px 10px;
    border-radius: 6px;
}

.paper-authors-modern {
    font-size: 0.95rem;
    color: #475569;
    line-height: 1.7;
    margin-bottom: 0;
    font-style: normal; /* No italic */
    background: rgba(255,255,255,0.6);
    padding: 16px;
    border-radius: 16px;
    border: 1px solid rgba(0,0,0,0.05);
}

.modern-btn.primary {
    display: inline-flex;
    background: linear-gradient(135deg, var(--text-gpumd), #2a5298);
    color: white;
    padding: 8px 16px; /* Smaller padding */
    border: none;
    font-size: 0.9rem;
    box-shadow: 0 4px 12px rgba(24, 103, 174, 0.2);
}

.modern-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(24, 103, 174, 0.3);
    background: linear-gradient(135deg, #135d9e, #1e3c72);
}

/* Responsive adjustments */
@media (max-width: 900px) {
    .community-row {
        grid-template-columns: 1fr;
    }
    
    .home-container {
        width: 90%;
        padding: 100px 0 60px;
    }
}