/* IPAP PhD Annual Report Styles */

:root {
    --color-bg: #0a0a0a;
    --color-text: #ffffff;
    --color-text-dim: #a0a0a0;
    --color-card-bg: #1a1a1a;
    --color-phase1: #667eea;
    --color-phase2: #029E73;
    --color-phase3: #0173B2;
    --color-phase3b: #DE8F05;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Breadcrumb Navigation */
.breadcrumb {
    padding: 1.5rem 0;
    background: rgba(26, 26, 26, 0.5);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.breadcrumb-link {
    color: var(--color-text-dim);
    text-decoration: none;
    transition: color 0.3s ease;
}

.breadcrumb-link:hover {
    color: var(--color-text);
}

.breadcrumb-separator {
    margin: 0 0.5rem;
    color: var(--color-text-dim);
}

.breadcrumb-current {
    color: var(--color-text);
    font-weight: 600;
}

/* Hero Section */
.hero {
    padding: 6rem 0;
    text-align: center;
    background: linear-gradient(180deg, rgba(102, 126, 234, 0.1) 0%, rgba(10, 10, 10, 0) 100%);
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    border-radius: 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #ffffff 0%, #a0a0a0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-subtitle {
    font-size: 2rem;
    color: var(--color-text-dim);
    margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--color-text-dim);
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.6s both;
}

/* Section Styles */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--color-text);
}

/* Narrative Section */
.narrative-section {
    padding: 6rem 0;
    background: rgba(26, 26, 26, 0.3);
}

.narrative-content {
    max-width: 900px;
    margin: 0 auto;
}

.theme-box {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2) 0%, rgba(118, 75, 162, 0.2) 100%);
    border: 2px solid rgba(102, 126, 234, 0.5);
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 3rem;
    text-align: center;
}

.theme-title {
    font-size: 1.2rem;
    color: var(--color-text-dim);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.theme-text {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.6;
}

.narrative-text p {
    font-size: 1.1rem;
    color: var(--color-text-dim);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

/* Flowchart Section */
.flowchart-section {
    padding: 6rem 0;
}

.flowchart-wrapper {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
    background: rgba(26, 26, 26, 0.5);
    border-radius: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

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

.node-box {
    fill: var(--color-card-bg);
    stroke-width: 2;
    transition: all 0.3s ease;
}

.node-box.phase1 {
    stroke: var(--color-phase1);
    fill: rgba(102, 126, 234, 0.1);
}

.node-box.phase2 {
    stroke: var(--color-phase2);
    fill: rgba(2, 158, 115, 0.1);
}

.node-box.phase3 {
    stroke: rgba(1, 115, 178, 0.5);
    fill: rgba(1, 115, 178, 0.05);
}

.node-box.phase3a {
    stroke: var(--color-phase3);
    fill: rgba(1, 115, 178, 0.1);
}

.node-box.phase3b {
    stroke: var(--color-phase3b);
    fill: rgba(222, 143, 5, 0.1);
}

.phase-node.clickable:hover .node-box {
    stroke-width: 3;
    filter: brightness(1.2);
}

.node-link {
    cursor: pointer;
}

.node-title {
    fill: var(--color-text);
    font-size: 16px;
    font-weight: 600;
    text-anchor: middle;
}

.node-subtitle {
    fill: var(--color-text);
    font-size: 20px;
    font-weight: 700;
    text-anchor: middle;
}

.node-venue {
    fill: var(--color-text-dim);
    font-size: 12px;
    text-anchor: middle;
}

.node-title-small {
    fill: var(--color-text);
    font-size: 18px;
    font-weight: 600;
    text-anchor: middle;
}

.node-subtitle-small {
    fill: var(--color-text-dim);
    font-size: 14px;
    text-anchor: middle;
}

.node-venue-small {
    fill: var(--color-text-dim);
    font-size: 11px;
    text-anchor: middle;
}

.arrow-label {
    fill: var(--color-text-dim);
    font-size: 12px;
    font-style: italic;
}

.flow-arrow line {
    animation: dashAnimation 2s linear infinite;
}

@keyframes dashAnimation {
    to {
        stroke-dashoffset: -20;
    }
}

/* Papers Section */
.papers-section {
    padding: 6rem 0;
    background: rgba(26, 26, 26, 0.3);
}

.papers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.paper-card {
    background: var(--color-card-bg);
    border-radius: 1rem;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.paper-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.phase1-card {
    border-color: rgba(102, 126, 234, 0.3);
}

.phase1-card:hover {
    border-color: var(--color-phase1);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.phase2-card {
    border-color: rgba(2, 158, 115, 0.3);
}

.phase2-card:hover {
    border-color: var(--color-phase2);
    box-shadow: 0 10px 30px rgba(2, 158, 115, 0.3);
}

.phase3a-card {
    border-color: rgba(1, 115, 178, 0.3);
}

.phase3a-card:hover {
    border-color: var(--color-phase3);
    box-shadow: 0 10px 30px rgba(1, 115, 178, 0.3);
}

.phase3b-card {
    border-color: rgba(222, 143, 5, 0.3);
}

.phase3b-card:hover {
    border-color: var(--color-phase3b);
    box-shadow: 0 10px 30px rgba(222, 143, 5, 0.3);
}

.paper-header {
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.paper-phase {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.paper-venue-badge {
    padding: 0.4rem 1rem;
    border-radius: 2rem;
    background: rgba(255, 255, 255, 0.1);
    font-size: 0.85rem;
    font-weight: 600;
}

.paper-body {
    padding: 2rem;
}

.paper-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    line-height: 1.4;
    color: var(--color-text);
}

.paper-description {
    font-size: 1rem;
    color: var(--color-text-dim);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.paper-contribution {
    padding: 1rem;
    background: rgba(102, 126, 234, 0.1);
    border-left: 3px solid var(--color-phase1);
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.95rem;
    color: var(--color-text-dim);
}

.paper-role {
    padding: 1rem;
    background: rgba(2, 158, 115, 0.1);
    border-left: 3px solid var(--color-phase2);
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    color: var(--color-text-dim);
}

.paper-contribution strong,
.paper-role strong {
    color: var(--color-text);
}

.btn-paper {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: var(--color-text);
}

.phase1-card .btn-paper:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-color: transparent;
}

.phase2-card .btn-paper:hover {
    background: var(--color-phase2);
    border-color: transparent;
}

.phase3a-card .btn-paper:hover {
    background: var(--color-phase3);
    border-color: transparent;
}

.phase3b-card .btn-paper:hover {
    background: var(--color-phase3b);
    border-color: transparent;
}

.btn-disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Connection Section */
.connection-section {
    padding: 6rem 0;
}

.connection-content {
    max-width: 1000px;
    margin: 0 auto;
}

.connection-diagram {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 4rem;
    gap: 2rem;
}

.connection-item {
    flex: 1;
    text-align: center;
    padding: 2rem;
    background: rgba(26, 26, 26, 0.5);
    border-radius: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.connection-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.connection-item h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.connection-item p {
    font-size: 0.95rem;
    color: var(--color-text-dim);
    line-height: 1.6;
}

.connection-arrow {
    font-size: 2rem;
    color: var(--color-phase1);
    flex-shrink: 0;
}

.connection-summary {
    background: rgba(26, 26, 26, 0.5);
    border: 2px solid rgba(102, 126, 234, 0.3);
    border-radius: 1rem;
    padding: 3rem;
}

.connection-summary h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--color-text);
}

.connection-summary p {
    font-size: 1.1rem;
    color: var(--color-text-dim);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.connection-summary ul {
    list-style: none;
    margin: 2rem 0;
}

.connection-summary li {
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 1rem;
    color: var(--color-text-dim);
}

.connection-summary li:last-child {
    border-bottom: none;
}

.connection-summary li strong {
    color: var(--color-text);
}

/* Footer */
.footer {
    padding: 3rem 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--color-text-dim);
}

.footer-affiliation {
    margin-top: 0.5rem;
    font-size: 0.9rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .papers-grid {
        grid-template-columns: 1fr;
    }
    
    .connection-diagram {
        flex-direction: column;
    }
    
    .connection-arrow {
        transform: rotate(90deg);
        margin: 1rem 0;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.5rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .flowchart-wrapper {
        padding: 1rem;
    }
    
    .connection-summary {
        padding: 2rem;
    }
    
    .connection-summary h3 {
        font-size: 1.5rem;
    }
    
    .connection-summary p {
        font-size: 1rem;
    }
}