/* Theme-aware CSS custom properties for MkDocs Material */
:root {
    --md-overlay-color: rgba(0, 0, 0, 0.8);
    --md-shadow-z1-color: rgba(0, 0, 0, 0.1);
    --md-shadow-z2-color: rgba(0, 0, 0, 0.2);
    --md-shadow-z3-color: rgba(0, 0, 0, 0.4);
}

/* Dark theme overrides */
[data-md-color-scheme="slate"] {
    --md-overlay-color: rgba(0, 0, 0, 0.9);
    --md-shadow-z1-color: rgba(0, 0, 0, 0.3);
    --md-shadow-z2-color: rgba(0, 0, 0, 0.5);
    --md-shadow-z3-color: rgba(0, 0, 0, 0.7);
}

/* Diagram Container Styling */
.diagram-container {
    position: relative;
    margin: 1em 0;
    border: 1px solid var(--md-default-fg-color--lightest);
    border-radius: 0.2rem;
    overflow: hidden;
}

.diagram-expand-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: var(--md-primary-fg-color);
    color: var(--md-primary-bg-color);
    border: none;
    border-radius: 0.2rem;
    padding: 0.5rem 0.8rem;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    z-index: 2; /* Lower than navbar (navbar uses 10) */
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px var(--md-shadow-z1-color, rgba(0,0,0,0.1));
}

.diagram-expand-btn:hover {
    background: var(--md-accent-fg-color);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px var(--md-shadow-z1-color, rgba(0,0,0,0.15));
}

.diagram-content {
    position: relative;
    max-height: 400px;
    overflow: hidden;
    padding: 1rem;
    padding-top: 3rem; /* Add space for the button */
}

/* Modal Styling */
.diagram-modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: var(--md-overlay-color, rgba(0, 0, 0, 0.8));
    backdrop-filter: blur(2px);
    animation: fadeIn 0.3s ease;
}

.diagram-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.diagram-modal-content {
    position: relative;
    background: var(--md-default-bg-color);
    border-radius: 12px;
    box-shadow: 0 20px 60px var(--md-shadow-z3-color, rgba(0,0,0,0.4));
    width: min(95vw, 1400px);
    height: min(90vh, 900px);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: slideIn 0.4s ease;
}

.diagram-modal-header {
    padding: 1.2rem 1.8rem;
    border-bottom: 1px solid var(--md-default-fg-color--lightest);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, var(--md-primary-fg-color--light), var(--md-primary-fg-color));
    color: white;
    position: relative;
}

.diagram-modal-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin: 0;
    text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.diagram-modal-close {
    background: var(--md-default-bg-color--light, rgba(255, 255, 255, 0.2));
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--md-typeset-color);
    width: 2.2rem;
    height: 2.2rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    backdrop-filter: blur(10px);
}

.diagram-modal-close:hover {
    background: var(--md-default-bg-color--lighter, rgba(255, 255, 255, 0.3));
    transform: scale(1.05);
}

.diagram-modal-body {
    flex: 1;
    overflow: hidden;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(45deg, 
        var(--md-default-bg-color--light, #f8f9fa) 0%, 
        var(--md-default-bg-color, #ffffff) 100%);
    min-height: 0; /* Important for flexbox */
}

.diagram-modal-viewport {
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: relative;
    cursor: grab;
    display: block; /* Changed from flex to block for absolute positioning */
    padding: 20px;
    box-sizing: border-box;
}

.diagram-modal-viewport:active {
    cursor: grabbing;
}

.diagram-modal-svg {
    display: block;
    margin: 0 auto;
    transition: transform 0.15s ease;
    transform-origin: center center;
    max-width: none;
    max-height: none;
    border-radius: 8px;
    box-shadow: 0 4px 20px var(--md-shadow-z2-color, rgba(0,0,0,0.1));
    background: var(--md-default-bg-color);
}

/* Zoom Controls */
.diagram-zoom-controls {
    position: absolute;
    bottom: 1.5rem;
    right: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
    z-index: 10;
}

.diagram-zoom-btn {
    background: linear-gradient(135deg, var(--md-primary-fg-color), var(--md-accent-fg-color));
    color: white;
    border: none;
    border-radius: 50%;
    width: 3rem;
    height: 3rem;
    font-size: 1.3rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px var(--md-shadow-z1-color, rgba(0,0,0,0.2));
    display: flex;
    align-items: center;
    justify-content: center;
}

.diagram-zoom-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px var(--md-shadow-z2-color, rgba(0,0,0,0.3));
}

.diagram-zoom-btn:active {
    transform: scale(0.95);
}

.diagram-zoom-btn:disabled {
    background: var(--md-default-fg-color--light);
    cursor: not-allowed;
    transform: none;
    opacity: 0.5;
}

/* Info Panel */
.diagram-info-panel {
    position: absolute;
    top: 1.5rem;
    left: 1.5rem;
    background: var(--md-overlay-color), rgba(0, 0, 0, 0.05);
    color: var(--md-typeset-color);
    padding: 0.8rem 1.2rem;
    border-radius: 8px;
    font-size: 0.85rem;
    z-index: 10;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 12px var(--md-shadow-z1-color, rgba(0,0,0,0.2));
    line-height: 1.4;
}

#zoom-level {
    font-weight: 600;
    color: var(--md-accent-fg-color--light);
}

/* Responsive Design */
@media (max-width: 768px) {
    .diagram-modal.active {
        padding: 10px;
    }
    
    .diagram-modal-content {
        width: 100vw;
        height: 100vh;
        border-radius: 0;
        max-width: none;
        max-height: none;
    }
    
    .diagram-modal-header {
        padding: 1rem;
    }
    
    .diagram-modal-title {
        font-size: 1.1rem;
    }
    
    .diagram-modal-viewport {
        padding: 15px;
    }
    
    .diagram-zoom-controls {
        bottom: 1rem;
        right: 1rem;
        gap: 0.5rem;
    }
    
    .diagram-zoom-btn {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1.1rem;
    }
    
    .diagram-info-panel {
        top: 1rem;
        left: 1rem;
        right: 1rem;
        font-size: 0.8rem;
        padding: 0.6rem 1rem;
    }
}

@media (max-width: 480px) {
    .diagram-modal-viewport {
        padding: 10px;
    }
    
    .diagram-zoom-controls {
        bottom: 0.5rem;
        right: 0.5rem;
    }
    
    .diagram-zoom-btn {
        width: 2.2rem;
        height: 2.2rem;
        font-size: 1rem;
    }
    
    .diagram-info-panel {
        position: relative;
        top: auto;
        left: auto;
        right: auto;
        margin: 0.5rem;
        font-size: 0.75rem;
    }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.diagram-modal.active .diagram-modal-content {
    animation: slideIn 0.4s ease;
}

/* Loading state */
.diagram-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 300px;
    font-size: 1.1rem;
    color: var(--md-default-fg-color--light);
    gap: 1rem;
}

.diagram-loading::before {
    content: '';
    width: 40px;
    height: 40px;
    border: 3px solid var(--md-default-fg-color--lightest);
    border-top: 3px solid var(--md-primary-fg-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Theme adaptation - handled by CSS custom properties above */
/* The following rules are now redundant as we use theme-aware variables */