/* --- Dark Mode (Default) --- */
:root {
    --bg-color: #1e1e1e;
    --editor-bg: #252526;
    --text-color: #d4d4d4;
    --slider-color: #33373d;
    --header-color: #8c8c8c;
    --button-hover-bg: #3a3d41;
    --font-main: "SF Pro Display", "Inter", -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    --font-mono: 'Fira Code', 'Menlo', 'Consolas', 'Courier New', monospace;
}

/* --- Automatic Light Mode --- */
@media (prefers-color-scheme: light) {
    :root {
        --bg-color: #F6F7FA;
        --editor-bg: #ffffff;
        --text-color: #1E293B;
        --slider-color: #ced4da;
        --header-color: #6c757d;
        --button-hover-bg: #e9ecef;
    }

    ::-webkit-scrollbar-thumb { background: #adb5bd; }
    ::-webkit-scrollbar-thumb:hover { background: #868e96; }
}


html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow: hidden;
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-color);
}

body.resizing {
    cursor: col-resize;
    user-select: none;
}

#app-container {
    display: flex;
    height: 100vh;
}

#editor-container, #preview-container {
    flex: 1 1 50%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0; 
}

#editor-container {
    margin: 10px 5px 10px 10px;
}

#preview-container {
    margin: 10px 10px 10px 5px;
}

.pane-header {
    padding: 10px 15px;
    font-size: 1.4rem;
    height: 30px;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: var(--text-color);
    background-color:  var(--bg-color);
    flex-shrink: 0;
    border-radius: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#preview-container .pane-header > span {
    display: flex;
    align-items: center;
    gap: 8px;
}

.pane-header div {
    display: flex;
    gap: 12px;
    align-items: center;
    justify-content: center;
}

.mmw-logo-mobile {
    display: none;
}

#preview-container .pane-header {
     background-color: var(--bg-color);
}

#markdown-editor {
    flex-grow: 1;
    width: 100%;
    height: 100%;
    background-color: var(--editor-bg);
    border: none;
    color: var(--text-color);
    font-family: var(--font-mono);
    font-size: 16px;
    padding: 20px;
    resize: none;
    outline: none;
    box-sizing: border-box;
    line-height: 1.6;
    border-radius: 8px;
}

#slider {
    margin-top: 60px;
    border-radius: 20px;
    margin-bottom: 10px;
    flex: 0 0 5px;
    cursor: col-resize;
    transition: background-color 0.2s ease;
}

#slider:hover {
    background-color: #1F9EEC;
}

#svg-output {
    flex-grow: 1;
    width: 100%;
    height: 100%;
    box-sizing: border-box;
    overflow: hidden;
    background-color: var(--bg-color);
}

#svg-output svg {
    background-color: var(--editor-bg);
    width: 100%;
    height: 100%;
    cursor: grab;
    display: block;
    border-radius: 8px;
}

#svg-output.panning svg {
    cursor: grabbing;
}

#svg-output svg .mindmap-content {
    transition: transform 0.2s ease;
}

.pane-controls {
    display: flex;
    align-items: center;
    gap: 2px;
}

.pane-controls a {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    color: var(--header-color);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.pane-controls a svg {
    position: static;
    width: 1.3em;
    height: 1.3em;
    vertical-align: middle;
}

.pane-controls a:hover {
    color: var(--text-color);
}

.github-icon {
    display: none;
    height: 25px !important;
    width: 25px !important;
}

.control-btn {
    background: none;
    border: none;
    color: var(--header-color);
    border-radius: 8px;
    width: 32px;
    height: 32px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6px;
}
.control-btn:hover svg {
    stroke: var(--text-color);
}
.control-btn svg {
    transition: all 0.2s ease;
}


::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #4a4a4a; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #5a5a5a; }


@media (max-width: 900px) {
   .hide-on-mobile {
        display: none;
    }

    .github-icon {
        display: block;
    }
}

@media (max-width: 740px) {
    #app-container {
        flex-direction: column-reverse;
    }

    #slider {
        display: none;
    }

    #editor-container, #preview-container {
        flex: 1; 
        min-height: 0; 
        margin: 0; 
    }

    #preview-container { 
        margin: 10px 10px 5px 10px;
    }

    #editor-container { 
        margin: 5px 10px 10px 10px;
    }
    
    body.resizing {
        cursor: default;
        user-select: auto;
    }

    .pane-header {
        font-size: 1.2rem;
        padding: 8px 12px;
        height: auto;
    }

    .hide-on-mobile {
        display: none;
    }

    .control-btn {
        width: 40px;
        height: 40px;
    }
    
    .pane-controls a {
        margin-right: 4px;
    }

    .mmw-logo-mobile {
        display: flex;
    }

    .mmw-logo-desktop {
        display: none;
    }
}