/* Typography and Font Loading */
@font-face {
    font-family: 'Vazirmatn';
    src: url('Vazirmatn.woff2') format('woff2');
    font-weight: 100 900;
    font-style: normal;
    font-display: swap;
}

/* Soft Neobrutalism Variables */
:root {
    --bg-color: #f8fafc;
    --grid-color: #e2e8f0;
    --main-black: #1e293b;
    --main-white: #ffffff;
    
    /* Playful Colors */
    --accent-green: #34d399;
    --accent-yellow: #fbbf24;
    --accent-purple: #c084fc;
    --accent-blue: #60a5fa;
    --accent-red: #f87171;
    
    /* Code Editor Feel */
    --editor-bg: #0f172a;
    --editor-text: #cbd5e1;
    --code-bg: #1e293b;

    /* Borders & Geometry */
    --border-width: 3px;
    --border-radius-lg: 16px;
    --border-radius-md: 12px;
    --border-radius-sm: 8px;
    --shadow-offset: 5px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Vazirmatn', sans-serif;
    background-color: var(--bg-color);
    background-image: linear-gradient(var(--grid-color) 1px, transparent 1px),
                      linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 25px 25px;
    height: 100vh;
    overflow: hidden;
    color: var(--main-black);
}

/* Layout Containers */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 20px;
    max-width: 1600px;
    margin: 0 auto;
}

/* Header Design */
.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--main-white);
    padding: 12px 25px;
    border: var(--border-width) solid var(--main-black);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0px var(--main-black);
    margin-bottom: 20px;
    z-index: 100;
}

.brand h1 {
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: -1px;
}

.brand span { color: var(--accent-green); }
.brand a { text-decoration: none; }

.actions { display: flex; gap: 12px; }

.actions .btn span {
    display: inline-block;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border: var(--border-width) solid var(--main-black);
    border-radius: var(--border-radius-md);
    background: var(--main-white);
    font-weight: 800;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.1s;
    box-shadow: 3px 3px 0px var(--main-black);
    font-family: inherit;
}

.btn:active {
    transform: translate(2px, 2px);
    box-shadow: 1px 1px 0px var(--main-black);
}

.btn-accent { background: var(--accent-green); }
.btn-secondary { background: var(--accent-yellow); }
.btn-danger { background: var(--accent-red); color: white; }

.btn-danger svg {
    fill: var(--main-white);
    stroke: var(--main-black);
}

.btn-success {
    background: var(--accent-green) !important;
    color: var(--main-black) !important;
}

.btn svg { width: 18px; height: 18px; }

/* Toolbar */
.toolbar-container {
    margin-bottom: 20px;
}

.toolbar {
    display: flex;
    gap: 12px;
    padding: 12px;
    background: var(--main-white);
    border: var(--border-width) solid var(--main-black);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0px var(--main-black);
    overflow-x: auto;
    scrollbar-width: none;
}
.toolbar::-webkit-scrollbar { display: none; }

.toolbar button {
    min-width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--main-white);
    border: 2px solid var(--main-black);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: 0.1s;
    box-shadow: 2px 2px 0px var(--main-black);
    color: var(--main-black);
}

.toolbar button:hover {
    background: var(--accent-purple);
    transform: translate(-1px, -1px);
    box-shadow: 3px 3px 0px var(--main-black);
}

.toolbar button:active {
    transform: translate(1px, 1px);
    box-shadow: 1px 1px 0px var(--main-black);
}

.toolbar button svg { width: 20px; height: 20px; }

.divider {
    width: 2px;
    background: var(--main-black);
    margin: 5px 4px;
    border-radius: 2px;
}

/* Workspace Panels */
.workspace {
    display: flex;
    flex: 1;
    gap: 0;
    position: relative;
    overflow: hidden;
}

.pane {
    flex: 1;
    background: var(--main-white);
    border: var(--border-width) solid var(--main-black);
    border-radius: var(--border-radius-lg);
    box-shadow: 6px 6px 0px var(--main-black);
    display: flex;
    flex-direction: column;
    min-width: 0;
    overflow: hidden;
}

.editor-pane {
    background: var(--editor-bg);
}

.pane-header {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px 16px;
    background: #f1f5f9;
    border-bottom: var(--border-width) solid var(--main-black);
    position: relative;
}

.editor-header {
    background: #1e293b;
    border-bottom: var(--border-width) solid var(--main-black);
}
.editor-header .pane-title {
    color: #e2e8f0;
}

.dots {
    position: absolute;
    left: 16px;
    display: flex;
    gap: 6px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid var(--main-black);
}

.dot.red { background: var(--accent-red); }
.dot.yellow { background: var(--accent-yellow); }
.dot.green { background: var(--accent-green); }

.pane-title {
    font-size: 0.85rem;
    font-weight: 800;
    color: var(--main-black);
}

textarea#editor {
    flex: 1;
    padding: 25px;
    border: none;
    outline: none;
    font-family: 'Vazirmatn', 'Fira Code', monospace;
    font-size: 1.15rem;
    line-height: 1.8;
    background: transparent;
    color: var(--editor-text);
    caret-color: var(--accent-yellow);
    resize: none;
}
textarea#editor::placeholder {
    color: #475569;
}

#preview-container {
    overflow-y: auto;
}

#preview {
    padding: 25px;
}

/* Central Divider & Language Switcher */
.resizer {
    width: 60px;
    position: relative;
    display: flex;
    justify-content: center;
    z-index: 50;
}

.resizer::before {
    content: '';
    position: absolute;
    top: 20px; bottom: 20px; left: 50%;
    width: 4px;
    background: var(--main-black);
    border-radius: 4px;
    transform: translateX(-50%);
}

.lang-toggle-capsule {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 44px;
    height: 94px;
    background: var(--main-white);
    border: var(--border-width) solid var(--main-black);
    border-radius: 50px;
    box-shadow: 3px 3px 0px var(--main-black);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    /* Isolate coordinate system from page direction */
    direction: ltr !important;
}

.switch-knob {
    width: 26px;
    height: 26px;
    background: var(--accent-blue);
    border: 2px solid var(--main-black);
    border-radius: 50%;
    transition: 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: absolute;
    top: 8px;
}

.lang-toggle-capsule.fa-active .switch-knob {
    top: 54px;
    background: var(--accent-yellow);
}

.lang-label {
    font-size: 0.75rem;
    font-weight: 900;
    user-select: none;
    z-index: 2;
}

/* Markdown Rendered Styles */
.markdown-body {
    line-height: 1.9;
    font-size: 1.05rem;
}

.markdown-body h1, .markdown-body h2, .markdown-body h3 {
    font-weight: 900;
    margin-top: 1.5em;
    margin-bottom: 0.5em;
}

.markdown-body h1 {
    font-size: 2.2rem;
    border-bottom: var(--border-width) solid var(--main-black);
    padding-bottom: 10px;
    display: inline-block;
}

.markdown-body h2 {
    font-size: 1.6rem;
}

.markdown-body p {
    margin-bottom: 1.2em;
}

.markdown-body a {
    color: var(--main-black);
    text-decoration: none;
    font-weight: 800;
    box-shadow: inset 0 -4px 0 var(--accent-green);
    transition: 0.2s ease;
}

.markdown-body a:hover {
    background: var(--accent-green);
}

.markdown-body blockquote {
    padding: 15px 20px;
    margin: 1.5em 0;
    background: #fef08a; 
    border: var(--border-width) solid var(--main-black);
    border-radius: var(--border-radius-md);
    border-inline-start: 8px solid var(--main-black);
    font-weight: 600;
    box-shadow: 4px 4px 0px var(--main-black);
}

.markdown-body pre, 
.markdown-body code {
    direction: ltr !important;
    text-align: left !important;
}

.markdown-body code {
    font-family: 'Fira Code', monospace;
    background: #e2e8f0;
    padding: 2px 6px;
    border: 2px solid var(--main-black);
    border-radius: 6px;
    font-size: 0.9em;
    font-weight: bold;
    display: inline-block;
}

.markdown-body pre {
    background: var(--code-bg);
    color: #f8fafc;
    padding: 20px;
    border: var(--border-width) solid var(--main-black);
    border-radius: var(--border-radius-md);
    box-shadow: 5px 5px 0px var(--main-black);
    overflow-x: auto;
    margin: 1.5em 0;
}

.markdown-body pre code {
    background: transparent;
    border: none;
    padding: 0;
    color: inherit;
    font-weight: normal;
}

.markdown-body ul, .markdown-body ol {
    margin: 0 0 1.5em 2em;
    padding-inline-start: 1em;
}

.markdown-body li {
    margin-bottom: 0.5em;
}

.markdown-body table {
    width: 100%;
    display: table;
    border-collapse: separate;
    border-spacing: 0;
    margin: 1.5em 0;
    border: var(--border-width) solid var(--main-black);
    border-radius: var(--border-radius-sm);
    box-shadow: 4px 4px 0px var(--main-black);
    background-color: var(--main-white);
}

.markdown-body th, 
.markdown-body td {
    padding: 12px 15px;
    border-bottom: 2px solid var(--main-black);
    border-inline-end: 2px solid var(--main-black);
    text-align: inherit;
}

.markdown-body th:last-child, 
.markdown-body td:last-child {
    border-inline-end: none;
}

.markdown-body tr:last-child td {
    border-bottom: none;
}

.markdown-body th {
    background: var(--accent-purple);
    font-weight: 900;
}

.markdown-body img {
    max-width: 100%;
    border: var(--border-width) solid var(--main-black);
    border-radius: var(--border-radius-md);
    box-shadow: 4px 4px 0px var(--main-black);
}

.markdown-body hr {
    border: none;
    border-top: var(--border-width) dashed var(--main-black);
    margin: 2em 0;
}

.mobile-tabs {
    display: none;
    gap: 12px;
    margin-bottom: 15px;
}

.tab-btn {
    flex: 1;
    padding: 12px;
    border: var(--border-width) solid var(--main-black);
    border-radius: var(--border-radius-md);
    background: var(--main-white);
    font-weight: 900;
    font-family: inherit;
    box-shadow: 3px 3px 0px var(--main-black);
}

.tab-btn.active {
    background: var(--accent-green);
}

@media (max-width: 768px) {
    .app-container { padding: 10px; }
    .top-bar { padding: 10px; margin-bottom: 15px; }
    .top-bar h1 { font-size: 1.2rem; }
    .btn span { display: none; }
    
    .actions .btn span {
        display: none;
    }

    /* Adjust button padding to make them square-ish for icons */
    .actions .btn {
        padding: 10px;
        justify-content: center;
        width: 44px; /* Ensure a consistent touch target size */
        height: 44px;
    }

    /* Keep the icon size consistent */
    .actions .btn svg {
        margin: 0;
        width: 20px;
        height: 20px;
    }
    
    .workspace { flex-direction: column; }
    .resizer {
        width: 100%;
        height: 60px;
        flex-direction: row;
    }
    .resizer::before {
        width: 100%; height: 4px;
        top: 50%; left: 0;
        bottom: auto;
        transform: translateY(-50%);
    }
    .lang-toggle-capsule {
        width: 94px; height: 44px;
        flex-direction: row;
        padding: 0 8px;
        /* Maintain LTR for the horizontal knob movement */
        direction: ltr !important;
    }
    /* Fixed: Consistent left mapping regardless of RTL body */
    .switch-knob { top: 50%; left: 8px; transform: translateY(-50%); }
    .lang-toggle-capsule.fa-active .switch-knob { top: 50%; left: 56px; }

    .mobile-tabs { display: flex; }
    .pane { display: none; box-shadow: 4px 4px 0px var(--main-black); }
    .pane.active-pane { display: flex; }
    .pane-header { display: none; }
}