/* --- THEME DEFINITIONS --- */
:root, body.theme-dark {
    --bg-dark: #1e1e1e;
    --bg-medium: #2d2d2d;
    --bg-light: #3c3c3c;
    --bg-tertiary: #1e1e1e; /* For editor placeholder */
    --text-primary: #d4d4d4;
    --text-secondary: #a0a0a0;
    --text-on-accent: #ffffff;
    --accent-primary: #007acc;
    --accent-hover: #005f9e;
    --selection-bg: #264f78;
    --danger-primary: #ef4444;
    --danger-hover: #b91c1c;
    --border-color: #555;
    --success-primary: #38a169;
    --success-hover: #2f855a;
}

body.theme-light {
    --bg-dark: #f3f4f6;
    --bg-medium: #ffffff;
    --bg-light: #e5e7eb;
    --bg-tertiary: #ffffff; /* For editor placeholder */
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --text-on-accent: #ffffff;
    --accent-primary: #2563eb;
    --accent-hover: #1d4ed8;
    --selection-bg: #bfdbfe;
    --danger-primary: #dc2626;
    --danger-hover: #b91c1c;
    --border-color: #d1d5db;
    --success-primary: #10b981;
    --success-hover: #059669;
}

body.theme-hc-black {
    --bg-dark: #000000;
    --bg-medium: #1a1a1a;
    --bg-light: #2c2c2c;
    --bg-tertiary: #000000; /* For editor placeholder */
    --text-primary: #ffffff;
    --text-secondary: #e0e0e0;
    --text-on-accent: #000000;
    --accent-primary: #ffff00;
    --accent-hover: #e6e600;
    --selection-bg: #003366;
    --danger-primary: #ff4d4d;
    --danger-hover: #ff1a1a;
    --border-color: #888888;
    --success-primary: #00ff00;
    --success-hover: #00cc00;
}


/* --- BASE STYLES --- */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    margin: 0;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    overflow: hidden;
    transition: background-color 0.2s, color 0.2s;
}

.container { display: flex; height: 100vh; }

button {
    padding: 5px 10px;
    border: none;
    background-color: var(--accent-primary);
    color: var(--text-on-accent);
    cursor: pointer;
    border-radius: 4px;
    font-size: 0.8rem;
    white-space: nowrap;
    transition: background-color 0.2s ease;
}
button:hover { background-color: var(--accent-hover); }

/* --- FILE MANAGER --- */
.file-manager-pane {
    flex: 0 0 250px;
    background-color: var(--bg-medium);
    color: var(--text-primary);
    display: flex;
    flex-direction: column;
    transition: flex-basis 0.3s ease-in-out;
    min-width: 0;
}
.container.fm-collapsed .file-manager-pane { flex-basis: 0; overflow: hidden; }

.fm-header { gap: 5px; background-color: var(--bg-medium); border-bottom: 1px solid var(--border-color); }
.fm-header h2 { margin-right: auto; }

.project-selector { padding: 8px; background-color: var(--bg-light); border-bottom: 1px solid var(--border-color); }
#project-dropdown { width: 100%; box-sizing: border-box; background-color: var(--bg-medium); color: var(--text-primary); border: 1px solid var(--border-color); border-radius: 4px; padding: 5px; font-size: 0.9rem; margin-bottom: 8px; }
.project-buttons { display: flex; justify-content: center; gap: 4px; }
.project-buttons button { flex-grow: 1; width: auto; height: 28px; padding: 0; font-size: 1rem; line-height: 0; }
#delete-project-btn { background-color: var(--danger-primary); }
#delete-project-btn:hover { background-color: var(--danger-hover); }

#file-list { list-style: none; padding: 0; margin: 0; overflow-y: auto; flex-grow: 1; user-select: none; }
#file-list li { padding: 8px 15px; border-bottom: 1px solid var(--border-color); cursor: pointer; color: var(--text-secondary); }
#file-list li.selected { background-color: var(--selection-bg); color: var(--text-primary); }
#file-list li.active { background-color: var(--accent-primary); color: var(--text-on-accent); }


.fm-footer { padding: 10px; border-top: 1px solid var(--border-color); background-color: var(--bg-light); }
.file-controls { display: flex; gap: 10px; justify-content: center; }
.file-controls button { width: auto; min-width: 30px; height: 30px; padding: 0 8px; font-size: 1rem; }
#clear-project-btn { background-color: var(--danger-primary); font-size: 0.8rem; font-weight: bold; }
#clear-project-btn:hover { background-color: var(--danger-hover); }
#restore-demo-btn { background-color: var(--success-primary); color: white; }
body.theme-hc-black #restore-demo-btn { color: #000; }
#restore-demo-btn:hover { background-color: var(--success-hover); }

/* --- RESIZE HANDLES --- */
.handle {
    flex-shrink: 0;
    width: 8px;
    background-color: var(--bg-dark);
    cursor: col-resize;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s ease;
}
.handle:hover { background-color: var(--accent-hover); }

.toggle-btn {
    background: transparent;
    border: none;
    color: #999;
    width: 100%;
    height: 100%;
    padding: 0;
    display: grid;
    place-items: center;
    font-size: 1rem;
    font-weight: bold;
    pointer-events: none;
}
.toggle-btn span { transition: transform 0.3s ease-in-out; }
.container.fm-collapsed #fm-handle .toggle-btn span { transform: rotate(180deg); }
.main-content.preview-collapsed #preview-handle .toggle-btn span { transform: rotate(180deg); }

/* --- MAIN CONTENT (Editor + Preview) --- */
.main-content {
    flex-grow: 1;
    display: flex;
    width: calc(100% - 250px - 8px);
    min-width: 0;
    transition: width 0.3s ease-in-out;
}
.container.fm-collapsed .main-content { width: calc(100% - 8px); }

.editor-pane, .preview-pane { display: flex; flex-direction: column; height: 100vh; }
.editor-pane { flex-grow: 1; background-color: var(--bg-dark); min-width: 0; position: relative; }
.preview-pane { flex-shrink: 0; width: 40%; background-color: white; transition: width 0.3s ease-in-out; min-width: 0; }
.main-content.preview-collapsed .preview-pane { width: 0; overflow: hidden; }

.pane-header { display: flex; align-items: center; padding: 10px; background-color: var(--bg-dark); color: var(--text-primary); flex-shrink: 0; border-bottom: 1px solid var(--border-color); }
.pane-header h2 { margin: 0; margin-right: auto; font-size: 1rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

#editor-container { 
    flex-grow: 1; 
    width: 100%; 
    height: 100%; 
    position: absolute; 
    display: none; 
}

#editor-placeholder {
    padding: 2rem;
    display: none;
    overflow-y: auto;
    height: 100%;
    box-sizing: border-box;
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
}
#editor-placeholder h1, #editor-placeholder h2 {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
    margin-top: 1.5rem;
    margin-bottom: 1rem;
    font-weight: bold;
}
#editor-placeholder h1 { font-size: 1.5em; }
#editor-placeholder h2 { font-size: 1.25em; }
#editor-placeholder ul { list-style-position: inside; margin-left: 1rem;}
#editor-placeholder code {
    background-color: var(--bg-light);
    padding: 0.2em 0.4em;
    border-radius: 3px;
    font-family: monospace;
}


/* --- PREVIEW PANE --- */
.preview-pane .pane-header { 
    background-color: var(--bg-medium); 
    color: var(--text-primary); 
    border-bottom: 1px solid var(--border-color); 
}
.preview-wrapper { position: relative; flex-grow: 1; }
#preview-output { width: 100%; height: 100%; border: none; background: white; }
body.theme-dark #preview-output, body.theme-hc-black #preview-output { background: #111; }


/* --- CONSOLE & MODALS --- */
.hidden {
    display: none !important;
}

.console-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 35%;
    background-color: rgba(30, 30, 30, 0.95);
    color: #d4d4d4;
    display: flex;
    flex-direction: column;
    border-top: 2px solid var(--accent-primary);
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
}
.console-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 10px;
    background-color: #252526;
    flex-shrink: 0;
}
#console-messages { flex-grow: 1; overflow-y: auto; padding: 10px; line-height: 1.4; }
#console-messages div { border-bottom: 1px solid #333; padding: 4px 0; white-space: pre-wrap; word-break: break-all; }
#console-messages .error { color: #ff8080; }
#console-messages .warn { color: #ffd700; }
#console-messages .info { color: #87ceeb; }


.context-menu {
    display: none;
    position: absolute;
    background-color: var(--bg-medium);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
    color: var(--text-primary);
    min-width: 200px;
    z-index: 1000;
}
.context-menu ul { list-style: none; padding: 5px 0; margin: 0; }
.context-menu li { padding: 8px 15px; cursor: pointer; }
.context-menu li:hover { background-color: var(--accent-hover); }
.context-menu li.disabled { color: #888; cursor: not-allowed; background-color: transparent; }
.context-menu li.separator { height: 1px; background-color: var(--border-color); margin: 5px 0; padding: 0; }
.context-menu li.danger:hover { background-color: var(--danger-hover); }


#settings-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0; top: 0;
    width: 100%; height: 100%;
    background-color: rgba(0,0,0,0.6);
    align-items: center;
    justify-content: center;
}
#settings-iframe {
    width: 90%;
    max-width: 600px;
    height: 80%;
    max-height: 700px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.5);
}

.editor-header-diff {
    display: flex;
    width: 100%;
    justify-content: space-around;
    align-items: center;
}
.diff-title {
    display: flex;
    align-items: center;
    gap: 10px;
}
.close-diff-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
}
.close-diff-btn:hover {
    color: var(--text-primary);
}