/* Visual Sonar Project Styles */

.project-hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
}

.project-hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.project-hero h1 i {
    margin-right: 0.5rem;
    color: rgba(255, 255, 255, 0.9);
}

.project-hero p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 800px;
    margin: 0 auto;
}

.back-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.back-button:hover {
    text-decoration: underline;
}

.project-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.demo-video {
    width: 100%;
    max-width: 800px;
    margin: 2rem auto;
    display: block;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
}

.papers-list {
    display: grid;
    gap: 1rem;
    margin-top: 2rem;
}

.paper-item {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--accent-color);
    box-shadow: var(--card-shadow);
}

.paper-title {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    transition: var(--transition);
}

.paper-title:hover {
    color: var(--accent-color);
    text-decoration: underline !important;
}

.project-image {
    width: 100%;
    max-width: 600px;
    height: auto;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    margin: 1.5rem auto;
    display: block;
}

.project-image.small {
    max-width: 300px;
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.image-item {
    text-align: center;
}

.image-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.image-item img:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.image-caption {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* Responsive Design */
@media (max-width: 768px) {
    .project-hero {
        padding: 3rem 0;
    }
    
    .hero-content {
        padding: 0 1rem;
    }
    
    .project-hero h1 {
        font-size: 2.5rem;
    }
    
    .project-hero p {
        font-size: 1.1rem;
    }
    
    .project-content {
        padding: 2rem 1rem;
    }
    
    .image-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .project-hero {
        padding: 2rem 0;
    }
    
    .project-hero h1 {
        font-size: 2rem;
    }
    
    .project-hero p {
        font-size: 1rem;
    }
}

/* New Structured Component Styles */

/* Architecture Layers */
.architecture-layers {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.layer-item {
    background: var(--section-bg);
    padding: 1.5rem;
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.layer-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.layer-item h4 {
    margin: 0 0 1rem 0;
    color: var(--primary-color);
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.layer-item p {
    margin: 0;
    color: var(--text-color);
    line-height: 1.6;
}

/* Navigation Nodes */
.node-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.node-item {
    background: var(--section-bg);
    padding: 1.5rem;
    border-radius: 12px;
    border-top: 4px solid var(--secondary-color);
    transition: transform 0.2s ease;
}

.node-item:hover {
    transform: translateY(-2px);
}

.node-item h4 {
    margin: 0 0 1rem 0;
    color: var(--secondary-color);
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* SSV Features */
.ssv-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.ssv-item {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.2s ease;
}

.ssv-item:hover {
    transform: scale(1.05);
}

.ssv-item h4 {
    margin: 0 0 1rem 0;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.ssv-item p {
    margin: 0;
    opacity: 0.9;
}

/* Mirror Types */
.mirror-types {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.8rem;
    margin: 2rem 0;
}

.mirror-item {
    background: var(--section-bg);
    padding: 0.8rem;
    border-radius: 8px;
    border: 2px solid transparent;
    transition: border-color 0.2s ease;
}

.mirror-item:nth-child(2) {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(147, 51, 234, 0.1));
}

.mirror-item h4 {
    margin: 0 0 0.4rem 0;
    color: var(--primary-color);
    font-size: 0.9rem;
}

.mirror-item p {
    margin: 0;
    font-size: 0.8rem;
    color: var(--text-color);
}

/* Specifications Grid */
.specs-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.8rem;
    margin: 2rem 0;
}

.spec-item {
    background: var(--section-bg);
    padding: 0.8rem;
    border-radius: 8px;
    text-align: center;
    border-top: 3px solid var(--primary-color);
}

.spec-item h4 {
    margin: 0 0 0.5rem 0;
    color: var(--primary-color);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
}

.spec-item p {
    margin: 0;
    color: var(--text-color);
    font-size: 0.8rem;
    line-height: 1.4;
}

/* Responsive adjustments for new components */
@media (max-width: 768px) {
    .architecture-layers,
    .node-grid,
    .ssv-features {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .specs-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.6rem;
    }
    
    .mirror-types {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.6rem;
    }
    
    .layer-item,
    .node-item,
    .ssv-item {
        padding: 1rem;
    }
    
    .spec-item {
        padding: 0.6rem;
    }
    
    .spec-item h4 {
        font-size: 0.85rem;
    }
    
    .spec-item p {
        font-size: 0.75rem;
    }
    
    .mirror-item {
        padding: 0.6rem;
    }
    
    .mirror-item h4 {
        font-size: 0.85rem;
    }
    
    .mirror-item p {
        font-size: 0.75rem;
    }
}

@media (max-width: 480px) {
    .specs-grid,
    .mirror-types {
        grid-template-columns: 1fr;
        gap: 0.6rem;
    }
    
    .spec-item,
    .mirror-item {
        padding: 0.6rem;
    }
    
    .spec-item h4,
    .mirror-item h4 {
        font-size: 0.8rem;
    }
    
    .spec-item p,
    .mirror-item p {
        font-size: 0.7rem;
    }
}

/* Image Modal Styles */
.clickable-image {
    cursor: pointer;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.clickable-image:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

.image-modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.modal-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    text-align: center;
}

.modal-content img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.close-button {
    position: absolute;
    top: -40px;
    right: 0;
    color: white;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    background: none;
    border: none;
    z-index: 1001;
}

.close-button:hover {
    color: #ccc;
}

.modal-caption {
    color: white;
    text-align: center;
    margin-top: 1rem;
    font-size: 1rem;
    padding: 0.5rem;
    background: rgba(0, 0, 0, 0.7);
    border-radius: 4px;
}

@media (max-width: 768px) {
    .modal-content {
        max-width: 95%;
        max-height: 95%;
    }
    
    .modal-content img {
        max-height: 70vh;
    }
    
    .close-button {
        font-size: 1.5rem;
        top: -30px;
    }
    
    .modal-caption {
        font-size: 0.9rem;
    }
}

/* Hero Demo GIF Styling */
.hero-demo {
    text-align: center;
}

.hero-gif {
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    border: 3px solid rgba(255, 255, 255, 0.2);
}

@media (max-width: 768px) {
    .hero-gif {
        max-width: 100%;
        border-radius: 8px;
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    }
}

/* Hero Navigation Links */
.hero-dataset-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.hero-dataset-btn {
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    min-width: 140px;
    gap: 0.5rem;
}

.hero-dataset-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
    color: white;
    text-decoration: none;
}

.hero-dataset-btn i {
    font-size: 1.1rem;
}

.hero-dataset-btn span {
    font-size: 0.9rem;
    font-weight: 500;
}

/* Hero navigation buttons styling - all dark like GitHub */
.hero-github-btn,
.hero-papers-btn {
    background: #24292e;
    border: 2px solid #24292e;
}

.hero-github-btn:hover,
.hero-papers-btn:hover {
    background: transparent;
    color: #24292e;
    border-color: #24292e;
}

@media (max-width: 768px) {
    .hero-dataset-links {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero-dataset-btn {
        justify-content: center;
        padding: 1rem 1.5rem;
        font-size: 0.85rem;
    }
}

/* Button styling to match RHM style */
.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
    border: 2px solid var(--secondary-color);
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

.btn-secondary:hover {
    background-color: transparent;
    color: var(--secondary-color);
    text-decoration: none;
}