/* --- 1. Global Styles & Theming (From main project) --- */
:root {
   /* Color Palette */
   --color-primary: #3498db;
   --color-secondary: #2c3e50;
   --color-danger: #e74c3c;
   --color-success: #1abc9c;
   --color-warning: #f1c40f;
   --color-info: #9b59b6;
   --color-special: #e67e22;

   /* Light Theme */
   --bg-page: #ffffff;
   --bg-controls: #f8f9fa;
   --bg-visualizer: #ecf0f1;
   --bg-code: #f1f1f1;
   --bg-code-inline: rgba(0, 0, 0, 0.05);
   --bg-tooltip: var(--color-secondary);
   --bg-input: #ffffff;

   --text-body: #333333;
   --text-heading: var(--color-secondary);
   --text-code: #333333;
   --text-tooltip: #ffffff;
   --text-input: #000000;
   --text-label-selected: var(--color-danger);

   --border-main: #dee2e6;
   --border-visualizer: var(--color-primary);
   --border-input: #cccccc;

   --shadow-main: 0 4px 12px rgba(0, 0, 0, 0.05);

   --code-comment: #6a737d;
   --code-property: #005cc5;
   --code-value: #d73a49;
}

@media (prefers-color-scheme: dark) {
   :root {
      /* Dark Theme */
      --bg-page: #1a202c;
      --bg-controls: #2d3748;
      --bg-visualizer: #2a2a33;
      --bg-code: #1e1e1e;
      --bg-code-inline: rgba(255, 255, 255, 0.1);
      --bg-tooltip: #4a5568;
      --bg-input: #2d3748;

      --text-body: #e2e8f0;
      --text-heading: #f7fafc;
      --text-code: #d4d4d4;
      --text-tooltip: #f7fafc;
      --text-input: #e2e8f0;
      --text-label-selected: #ff7575;

      --border-main: #4a5568;
      --border-input: #4a5568;

      --shadow-main: 0 4px 12px rgba(0, 0, 0, 0.2);

      --code-comment: #888888;
      --code-property: #9cdcfe;
      --code-value: #ce9178;
   }
}

/* --- 2. Base Styles --- */
* {
   box-sizing: border-box;
   margin: 0;
   padding: 0;
}

body {
   font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
   line-height: 1.7;
   background-color: var(--bg-page);
   color: var(--text-body);
   transition: background-color 0.2s ease, color 0.2s ease;
   padding-bottom: 50px;
}

.container {
   max-width: 1400px;
   margin: 0 auto;
   padding: 20px;
}

h1,
h2,
h3 {
   color: var(--text-heading);
   margin-bottom: 15px;
   line-height: 1.3;
}

h1 {
   font-size: 2.5rem;
   text-align: center;
   margin: 30px 0;
}

h2 {
   font-size: 2rem;
   border-bottom: 2px solid var(--color-primary);
   padding-bottom: 10px;
   margin-top: 40px;
}

h3 {
   font-size: 1.5rem;
   margin-top: 25px;
}

p {
   margin-bottom: 15px;
}

code {
   font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
   background-color: var(--bg-code-inline);
   color: var(--text-code);
   padding: 2px 5px;
   border-radius: 4px;
}

pre {
   background: var(--bg-code);
   color: var(--text-code);
   padding: 20px;
   border-radius: 8px;
   overflow-x: auto;
   margin-bottom: 20px;
   font-size: 0.9rem;
}

pre .comment {
   color: var(--code-comment);
}
pre .property {
   color: var(--code-property);
}
pre .value {
   color: var(--code-value);
}

button {
   cursor: pointer;
   padding: 8px 15px;
   border: none;
   border-radius: 5px;
   background-color: var(--color-primary);
   color: white;
   font-size: 0.9rem;
   font-weight: bold;
   transition: background-color 0.2s ease;
}
button:hover {
   opacity: 0.85;
}
button.secondary {
   background-color: var(--color-secondary);
}

a {
   color: var(--color-primary);
   text-decoration: none;
}
a:hover {
   text-decoration: underline;
}

/* --- 3. Playground Layout --- */
.playground {
   display: grid;
   grid-template-columns: 350px 1fr;
   gap: 30px;
   margin-top: 30px;
}

.controls {
   background: var(--bg-controls);
   border: 1px solid var(--border-main);
   border-radius: 8px;
   padding: 25px;
   box-shadow: var(--shadow-main);
   height: fit-content;
}

.control-group {
   margin-bottom: 25px;
}

.control-group label {
   display: flex;
   align-items: center;
   font-weight: 600;
   margin-bottom: 8px;
   color: var(--text-heading);
}

.control-group select,
.control-group input[type="text"] {
   width: 100%;
   padding: 10px;
   border-radius: 5px;
   border: 1px solid var(--border-input);
   font-size: 0.95rem;
   background-color: var(--bg-input);
   color: var(--text-input);
}

/* Custom Toggle Switch for Parent Position */
.toggle-switch {
   display: flex;
   align-items: center;
   justify-content: space-between;
}
.switch {
   position: relative;
   display: inline-block;
   width: 60px;
   height: 34px;
}
.switch input {
   display: none;
}
.slider {
   position: absolute;
   cursor: pointer;
   top: 0;
   left: 0;
   right: 0;
   bottom: 0;
   background-color: #ccc;
   transition: 0.4s;
   border-radius: 34px;
}
.slider:before {
   position: absolute;
   content: "";
   height: 26px;
   width: 26px;
   left: 4px;
   bottom: 4px;
   background-color: white;
   transition: 0.4s;
   border-radius: 50%;
}
input:checked + .slider {
   background-color: var(--color-success);
}
input:checked + .slider:before {
   transform: translateX(26px);
}

.visualizer-wrapper {
   position: relative;
}

/* The Parent Container */
.visualizer-container {
   position: static; /* Default */
   height: 500px;
   width: 100%;
   background: var(--bg-visualizer);
   border: 3px dashed var(--border-visualizer);
   border-radius: 8px;
   padding: 20px;
   transition: all 0.3s ease;
   overflow: hidden; /* To contain sticky/absolute items */
}

.visualizer-container.relative {
   position: relative;
   border-style: solid;
   border-color: var(--color-success);
}

/* The Child Item */
.positioned-item {
   position: static; /* Default */
   width: 120px;
   height: 120px;
   background-color: var(--color-danger);
   color: white;
   display: flex;
   justify-content: center;
   align-items: center;
   font-weight: bold;
   font-size: 1.2rem;
   border-radius: 5px;
   padding: 10px;
   text-align: center;
   z-index: 10;
   transition: all 0.3s ease;
   /* Default "auto" values */
   top: auto;
   left: auto;
   right: auto;
   bottom: auto;
}

/* Placeholder for static/relative */
.static-placeholder {
   width: 120px;
   height: 120px;
   background: rgba(0, 0, 0, 0.1);
   border: 2px dashed #888;
   border-radius: 5px;
   display: none; /* Hidden by default */
   font-size: 0.8rem;
   padding: 5px;
   color: var(--text-body);
}
.positioned-item.static,
.positioned-item.relative {
   z-index: 1;
}
.positioned-item.static + .static-placeholder,
.positioned-item.relative + .static-placeholder {
   display: flex; /* Show placeholder */
   justify-content: center;
   align-items: center;
}
.positioned-item.fixed {
   position: fixed;
}
.positioned-item.absolute {
   position: absolute;
}
.positioned-item.sticky {
   position: sticky;
}

/* --- 4. Explanations & Other --- */
.explanation-grid {
   display: grid;
   grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
   gap: 20px;
}

.explanation-card {
   background: var(--bg-controls);
   border: 1px solid var(--border-main);
   border-radius: 8px;
   padding: 20px;
   box-shadow: var(--shadow-main);
}
.explanation-card h3 {
   color: var(--color-primary);
   margin-top: 0;
}

/* --- 5. Responsiveness --- */
@media (max-width: 992px) {
   .playground {
      grid-template-columns: 1fr;
   }
   .controls {
      order: 1;
   }
   .visualizer-wrapper {
      order: 2;
   }
}