/* Import Main Variables & Fonts (assuming style.css is loaded, or we redefine essential vars) */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@300;400;700&family=Montserrat:wght@300;400;600;800&family=Merriweather:ital,wght@0,300;0,700;1,300&display=swap');

:root {
  /* Re-declaring core variables for standalone usage if needed, 
     but typically this file is loaded AFTER style.css */
  --bg-color: #050505; 
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --accent: #38bdf8; /* Sky Blue */
  --accent-glow: rgba(56, 189, 248, 0.3);
  --glass-bg: rgba(15, 23, 42, 0.6);
  --glass-border: rgba(255, 255, 255, 0.1);
  --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
  --line-color: #334155;
  --node-bg: #1e293b;  /* Slate 800 */
  --node-border: #94a3b8; /* Slate 400 */
  --accent-color: #38bdf8; /* Sky 400 */
  --text-color: #f8fafc;
  --attn-color: #f59e0b; /* Amber */
  --gru-color: #8b5cf6; /* Violet */
  --mem-color: #d946ef; /* Fuchsia for Memory */
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Merriweather', serif;
  --font-mono: 'JetBrains Mono', monospace;
}
/* Light Theme overrides */
body.light-mode {
  --bg-color: #fdefcc; /* Warm white */
  --text-primary: #4a0404; /* Dark Red/Brown */
  --text-secondary: #7c2d12; /* Rust */
  --accent: #d97706; /* Amber */
  --accent-glow: rgba(217, 119, 6, 0.2);
  --text-color: #1a1b1c;
  --accent-color: #032838; /* Sky Dark */
  --attn-color: #493005; /* Amber */
  --gru-color: #291c47; /* Violet */
  --mem-color: #3d1543; /* Fuchsia for Memory */
  --glass-bg: rgba(183, 131, 102, 0.6);
  --glass-border: rgba(255, 165, 0, 0.2);
  --card-shadow: 0 8px 32px 0 rgba(255, 140, 0, 0.15);
  --line-color: #334155;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.8;
    margin: 0;
}

/* --- LAYOUT --- */
.project-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 120px 20px 60px; /* Top padding clears fixed header */
}

/* --- TYPOGRAPHY --- */
h1, h2, h3 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.2;
    background: linear-gradient(to right, var(--text-primary), var(--accent));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

h2 {
    font-size: 1.8rem;
    border-left: 4px solid var(--accent);
    padding-left: 15px;
}

h4 {
    font-weight: 300;
    font-size: 1.5rem;
    letter-spacing: 2px;
    margin-bottom: 40px;
    text-transform: uppercase;
    border-bottom: 1px solid var(--accent-color);
    padding-bottom: 10px;
    text-align: center;
}
p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.lead {
    font-size: 1.3rem;
    color: var(--text-primary);
    font-weight: 300;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 2rem;
    margin-bottom: 3rem;
}

/* --- MEDIA CONTAINERS --- */
.media-block {
    margin: 2rem 0;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.media-block img, 
.media-block video {
    width: 100%;
    height: auto;
    display: block;
}

.caption {
    padding: 10px 15px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent);
    background: var(--glass-bg);
    border-top: 1px solid var(--glass-border);
    text-align: center;
}
/* The collapse animation! */

.media-block inbody {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-sans);
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0;
    overflow: hidden;
    padding-top: 20px;
}

.media-block insideh1 {
    font-family: var(--font-serif);
    font-weight: normal;
    letter-spacing: 1px;
    margin: 0 0 10px 0;
    border-bottom: 1px solid var(--accent);
    padding-bottom: 5px;
    text-transform: uppercase;
    font-size: 1.2rem;
}
/* Controls positioned above figures */
.controls {
    margin-bottom: 20px;
    z-index: 100;
}
button {
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 8px 24px;
    cursor: pointer;
    font-family: var(--font-sans);
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
    transition: all 0.3s;
    border-radius: 4px;
}
button:hover {
    background: var(--accent);
    color: var(--bg-color);
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.4);
}

.infographic-container {
    display: flex;
    gap: 30px; /* More space for captions */
    position: relative;
    align-items: flex-start;
    margin-left: 30px;
    margin-right: 30px;
}

/* Wrapper to hold panel + caption */
.panel-wrapper {
    display: flex;
    flex-direction: column;
    width: 400px;
}

/* Connecting Arrow */
.arrow-connector {
    position: absolute;
    left: 50%;
    top: 200px; /* Center relative to 400px height panel */
    transform: translate(-50%, -50%);
    width: 50px;
    height: 2px;
    background: var(--text-secondary);
    z-index: 10;
    opacity: 0;
    transition: opacity 1s;
}
.arrow-connector::after {
    content: '';
    position: absolute;
    right: 0;
    top: -4px;
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
    border-left: 10px solid var(--text-secondary);
}

.panel {
    width: 400px;
    height: 400px;
    background: #1e293b;
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
    opacity: 0.3; /* Start dimmed */
    transition: opacity 0.5s, box-shadow 0.5s;
}

.panel.active {
    opacity: 1;
    box-shadow: 0 0 20px rgba(0,0,0,0.5);
    border-color: var(--text-secondary);
}

.panel-label {
    position: absolute;
    top: 10px;
    left: 10px;
    font-family: var(--font-body);
    background: --glass-bg;
    color: #e2e8f0;
    padding: 4px 8px;
    border: 1px solid var(--border);
    font-size: 0.9rem;
    pointer-events: none;
    z-index: 10;
}

.scale-bar {
    position: absolute;
    bottom: 10px;
    right: 10px;
    height: 5px;
    border-left: 1px solid white;
    border-right: 1px solid white;
    border-bottom: 1px solid white;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    font-family: var(--font-serif);
    font-size: 0.8rem;
    padding-bottom: 2px;
    pointer-events: none;
}

.annotation {
    position: absolute;
    font-family: var(--font-serif);
    font-size: 0.85rem;
    color: var(--accent);
    text-shadow: 0 1px 2px black;
    opacity: 0;
    transition: opacity 0.5s;
    pointer-events: none;
}

canvas {
    display: block;
}

/* Dynamic Caption Styles */
.caption-box {
    margin-top: 15px;
    min-height: 60px;
    border-top: 1px solid var(--border);
    padding-top: 10px;
    font-family: var(--font-mono); /* Monospace for data feel */
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
    opacity: 0;
    transition: opacity 0.5s;
}
.caption-box.visible {
    opacity: 1;
}
.highlight {
    color: var(--accent);
    font-weight: bold;
}


/* UNet Animation */
.diagram-container {
    position: relative;
    margin: 0;
    width: 1000;
    height: 550px;
}

/* --- SVG Layer for Lines --- */
svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: visible;
}

.conn-line {
    fill: none;
    stroke: var(--line-color);
    stroke-width: 2;
    vector-effect: non-scaling-stroke;
}

.flow-path {
    fill: none;
    stroke: var(--accent-color);
    stroke-width: 3;
    stroke-dasharray: 10 9999; /* Initial dot */
    stroke-linecap: round;
    opacity: 0;
}

/* --- Node Styling --- */
.node {
    position: absolute;
    background: var(--node-bg);
    border: 1px solid var(--node-border);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 2;
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
    transition: all 0.3s ease;
}

.node.active {
    border-color: var(--accent-color);
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.5);
    background: #0ea5e9;
    color: white;
}

.label {
    position: absolute;
    color: #64748b;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    pointer-events: none;
}

/* Specific Components */

/* Input Tensor */
.tensor {
    width: 40px;
    height: 60px;
    perspective: 100px;
}
.tensor-stack {
    position: absolute;
    width: 100%;
    height: 100%;
    background: rgba(56, 189, 248, 0.1);
    border: 1px dashed var(--accent-color);
    transform: rotateY(15deg);
}

/* ConvGRU */
.gru-block {
    width: 90px;
    height: 120px;
    border-color: var(--gru-color);
    background: rgba(139, 92, 246, 0.05);
    flex-direction: column;
    justify-content: flex-end;
    padding-bottom: 15px;
}
.gru-label {
    margin-top: 5px;
    color: var(--gru-color);
}

/* Memory State Node */
.memory-state {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px dashed var(--mem-color);
    background: rgba(217, 70, 239, 0.1);
    color: var(--mem-color);
    font-family: 'Times New Roman', serif;
    font-style: italic;
    font-size: 1rem;
    z-index: 3;
}
.memory-state::after {
    content: 'State';
    position: absolute;
    bottom: -15px;
    font-size: 0.6rem;
    font-family: sans-serif;
    font-style: normal;
    opacity: 0.7;
}
.memory-state.active {
    background: var(--mem-color);
    color: white;
    border-style: solid;
    box-shadow: 0 0 20px var(--mem-color);
}

/* UNet Layers */
.enc, .dec {
    width: 80px;
    height: 40px;
}
.bottleneck {
    width: 80px;
    height: 40px;
}

/* Attention Gate */
.att-gate {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border-color: var(--attn-color);
    background: rgba(245, 158, 11, 0.1);
    color: var(--attn-color);
    font-size: 0.65rem;
}
.att-gate.active {
    background: var(--attn-color);
    border-color: white;
    color: white;
    box-shadow: 0 0 15px rgba(245, 158, 11, 0.6);
}

/* 1x1 Conv */
.out-conv {
    width: 60px;
    height: 60px;
    border-radius: 50%;
}

/* Status Bar */
.status-bar {
    position: flex;
    bottom: 0px;
    font-family: monospace;
    color: var(--accent-color);
    font-size: 0.9rem;
    background: rgba(0,0,0,0.3);
    z-index: 5;
    text-align: center;
    border-radius: 4px;
    border: 1px solid rgba(56, 189, 248, 0.2);
}


/* --- CODE BLOCKS --- */
pre {
    background: #0f172a;
    padding: 20px;
    border-radius: 8px;
    overflow-x: auto;
    border: 1px solid var(--glass-border);
    margin: 2rem 0;
}

code {
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 0.9rem;
}

/* --- NAVIGATION --- */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent);
    text-decoration: none;
    font-family: var(--font-heading);
    font-weight: 600;
    margin-bottom: 20px;
    transition: transform 0.2s;
}

.back-link:hover {
    transform: translateX(-5px);
}

/* --- FOOTER --- */
.project-footer {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--glass-border);
    text-align: center;
    font-family: var(--font-heading);
    color: var(--text-secondary);
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    .project-container { padding-top: 100px; }
}