/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fafafa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header and Navigation */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

.preview-banner {
    background: linear-gradient(45deg, #ff6b6b, #ee5a24);
    padding: 0.75rem 0;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.preview-notice {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    color: white;
    font-size: 0.9rem;
    font-weight: 500;
}

.preview-notice i {
    color: #ffd700;
    font-size: 1rem;
}

.preview-notice strong {
    color: #ffd700;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
}

.nav-brand i {
    font-size: 2rem;
    color: #ffd700;
}

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

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: #ffd700;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
    min-height: 80vh;
}

.hero-content {
    padding: 0 20px;
    position: relative;
}

.coming-soon-hero-badge {
    position: absolute;
    top: -1rem;
    left: 20px;
    background: linear-gradient(45deg, #ff6b6b, #ee5a24);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.4);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    margin-top: 2rem;
}

.gradient-text {
    background: linear-gradient(45deg, #ffd700, #ffed4e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.hero-upcoming {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.upcoming-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: #ffd700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.upcoming-features {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(45deg, #ffd700, #ffed4e);
    color: #333;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

/* Hero Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0 20px;
}

.p3m-diagram {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.diagram-node {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    min-width: 120px;
}

.diagram-node:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.diagram-node i {
    font-size: 2rem;
    color: #ffd700;
    margin-bottom: 0.5rem;
    display: block;
}

.diagram-node span {
    font-weight: 600;
    font-size: 0.9rem;
}

.diagram-arrow {
    width: 40px;
    height: 2px;
    background: rgba(255, 255, 255, 0.5);
    position: relative;
}

.diagram-arrow::after {
    content: '';
    position: absolute;
    right: 0;
    top: -3px;
    width: 0;
    height: 0;
    border-left: 8px solid rgba(255, 255, 255, 0.5);
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
}

/* Sections */
.section {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: #333;
}

/* Overview Section */
.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.overview-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.overview-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.card-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.card-icon i {
    font-size: 2rem;
    color: white;
}

.overview-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #333;
}

.overview-card p {
    color: #666;
    line-height: 1.6;
}

/* Demo Section */
.demo-container {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 2rem;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    overflow: hidden;
}

.demo-header {
    text-align: center;
    margin-bottom: 2rem;
}

.demo-subtitle {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 1rem 2rem;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1rem;
    margin-top: 1rem;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.demo-subtitle i {
    color: #ffd700;
    font-size: 1.2rem;
}

.demo-sidebar {
    background: #f8f9fa;
    padding: 2rem;
    border-right: 1px solid #e9ecef;
}

.demo-section {
    margin-bottom: 2rem;
}

.demo-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #333;
}

.p3m-textarea {
    width: 100%;
    height: 200px;
    padding: 1rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.4;
    resize: vertical;
    background: white;
}

.p3m-textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.demo-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.demo-actions .btn {
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
}

.expression-input {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.expression-field {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.9rem;
}

.expression-field:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.expression-result {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid #e9ecef;
    min-height: 60px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.9rem;
}

/* Demo Main */
.demo-main {
    padding: 2rem;
}

.demo-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid #e9ecef;
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    background: none;
    cursor: pointer;
    font-weight: 500;
    color: #666;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tab-btn:hover {
    color: #333;
}

.tab-btn.active {
    color: #667eea;
    border-bottom-color: #667eea;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Visualization */
.p3m-visualization {
    min-height: 400px;
    background: #f8f9fa;
    border-radius: 8px;
    border: 2px dashed #dee2e6;
    display: flex;
    align-items: center;
    justify-content: center;
}

.visualization-placeholder {
    text-align: center;
    color: #6c757d;
}

.visualization-placeholder i {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

/* Entities Display */
.entities-display {
    min-height: 400px;
}

.entities-placeholder {
    text-align: center;
    color: #6c757d;
    padding: 2rem;
}

.entities-placeholder i {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

/* Computed Display */
.computed-display {
    min-height: 400px;
}

.computed-placeholder {
    text-align: center;
    color: #6c757d;
    padding: 2rem;
}

.computed-placeholder i {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

/* Features Section */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.feature-card.coming-soon {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border: 2px dashed #dee2e6;
}

.feature-card.coming-soon:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(0,0,0,0.1);
}

.coming-soon-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: linear-gradient(45deg, #ff6b6b, #ee5a24);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 10px rgba(255, 107, 107, 0.3);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 2px 10px rgba(255, 107, 107, 0.3);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 4px 15px rgba(255, 107, 107, 0.4);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 2px 10px rgba(255, 107, 107, 0.3);
    }
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-card.coming-soon .feature-icon {
    background: linear-gradient(135deg, #95a5a6, #7f8c8d);
    opacity: 0.8;
}

.feature-icon i {
    font-size: 1.5rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #333;
}

.feature-card.coming-soon h3 {
    color: #6c757d;
}

.feature-card p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.feature-card.coming-soon p {
    color: #868e96;
}

.feature-list {
    list-style: none;
    padding-left: 0;
}

.feature-list li {
    padding: 0.5rem 0;
    color: #666;
    position: relative;
    padding-left: 1.5rem;
}

.feature-card.coming-soon .feature-list li {
    color: #868e96;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: bold;
}

.feature-card.coming-soon .feature-list li::before {
    content: '⏳';
    color: #ffc107;
}

/* Documentation Section */
.docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.doc-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.doc-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #333;
}

.entity-types {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.entity-type {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    background: #f8f9fa;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

.entity-code {
    background: #667eea;
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.9rem;
    min-width: 60px;
    text-align: center;
}

.entity-name {
    font-weight: 500;
    color: #333;
}

.expression-examples {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.expression-example {
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

.expression-example code {
    background: #e9ecef;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.9rem;
    color: #495057;
    display: block;
    margin-bottom: 0.5rem;
}

.expression-example span {
    color: #666;
    font-size: 0.9rem;
}

/* Footer */
.footer {
    background: #2c3e50;
    color: white;
    padding: 3rem 0;
    margin-top: 4rem;
}

.footer-content {
    text-align: center;
}

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-brand i {
    color: #ffd700;
}

.footer p {
    margin-bottom: 2rem;
    opacity: 0.8;
}

.footer-disclaimer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
    padding: 1rem 2rem;
    background: linear-gradient(45deg, #ffc107, #ff8f00);
    border-radius: 12px;
    color: #856404;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(255, 193, 7, 0.3);
}

.footer-disclaimer i {
    color: #856404;
    font-size: 1.2rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-links a:hover {
    opacity: 1;
}

/* P3M Visualization Styles */
.p3m-tree {
    padding: 1rem;
}

.p3m-tree-node {
    margin: 0.5rem 0;
    padding: 0.5rem;
    border-radius: 6px;
    background: white;
    border: 1px solid #e9ecef;
    transition: all 0.3s ease;
}

.p3m-tree-node:hover {
    border-color: #667eea;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.1);
}

.p3m-tree-node-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    user-select: none;
}

.p3m-tree-node-toggle {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    transition: all 0.3s ease;
}

.p3m-tree-node-toggle:hover {
    background: #e9ecef;
}

.p3m-tree-node-content {
    margin-left: 2rem;
    padding-top: 0.5rem;
    border-left: 2px solid #e9ecef;
    padding-left: 1rem;
}

.p3m-tree-node-content.collapsed {
    display: none;
}

.entity-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.entity-badge.portfolio { background: #e3f2fd; color: #1976d2; }
.entity-badge.program { background: #f3e5f5; color: #7b1fa2; }
.entity-badge.project { background: #e8f5e8; color: #388e3c; }
.entity-badge.wbs { background: #fff3e0; color: #f57c00; }
.entity-badge.risk { background: #ffebee; color: #d32f2f; }
.entity-badge.task { background: #f1f8e9; color: #689f38; }

/* Disclaimer Section */
.disclaimer-section {
    background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%);
    padding: 3rem 0;
    border-top: 1px solid #ffeaa7;
    border-bottom: 1px solid #ffeaa7;
}

.disclaimer-box {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    border: 2px solid #ffc107;
}

.disclaimer-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(45deg, #ffc107, #ff8f00);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.disclaimer-icon i {
    font-size: 1.8rem;
    color: white;
}

.disclaimer-content h3 {
    color: #856404;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.disclaimer-content p {
    color: #856404;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.disclaimer-content p:last-child {
    margin-bottom: 0;
}

.disclaimer-content strong {
    color: #856404;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 2rem 0;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .demo-container {
        grid-template-columns: 1fr;
    }
    
    .demo-sidebar {
        border-right: none;
        border-bottom: 1px solid #e9ecef;
    }
    
    .nav-menu {
        display: none;
    }
    
    .overview-grid,
    .features-grid,
    .docs-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .p3m-diagram {
        flex-direction: column;
        gap: 1rem;
    }
    
    .diagram-arrow {
        width: 2px;
        height: 20px;
    }
    
    .diagram-arrow::after {
        right: -3px;
        top: auto;
        bottom: 0;
        border-left: 4px solid transparent;
        border-right: 4px solid transparent;
        border-top: 8px solid rgba(255, 255, 255, 0.5);
        border-bottom: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    .demo-actions {
        flex-direction: column;
    }
    
    .demo-actions .btn {
        width: 100%;
        justify-content: center;
    }
}