/* ========================================
   SIBER GUVENLIK BILGI BANKASI - HACKER TEMASI
   TurkHackTeam Esintili Koyu Tema
======================================== */

:root {
    /* Renk Paleti */
    --bg-dark: #0a0a0a;
    --bg-darker: #050505;
    --bg-card: #111111;
    --bg-card-hover: #1a1a1a;
    --bg-sidebar: #0d0d0d;
    
    --text-primary: #00ff00;
    --text-secondary: #00cc00;
    --text-muted: #666666;
    --text-body: #cccccc;
    --text-white: #ffffff;
    
    --accent-green: #00ff00;
    --accent-green-dim: #00aa00;
    --accent-red: #ff3333;
    --accent-yellow: #ffcc00;
    --accent-cyan: #00ffff;
    
    --border-color: #222222;
    --border-green: #003300;
    
    /* Tipografi */
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Olculer */
    --sidebar-width: 280px;
    --header-height: 60px;
    --radius: 4px;
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 15px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-dark);
    color: var(--text-body);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--text-white);
    text-shadow: 0 0 8px var(--accent-green);
}

/* ========================================
   LOGIN SAYFASI
======================================== */

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: 
        radial-gradient(ellipse at top, #001100 0%, transparent 50%),
        linear-gradient(180deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
    padding: 1rem;
}

.login-box {
    background: var(--bg-card);
    border: 1px solid var(--border-green);
    border-radius: var(--radius);
    padding: 2.5rem;
    width: 100%;
    max-width: 480px;
    box-shadow: 
        0 0 40px rgba(0, 255, 0, 0.1),
        inset 0 1px 0 rgba(0, 255, 0, 0.1);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.ascii-art {
    font-family: var(--font-mono);
    font-size: 0.5rem;
    color: var(--text-primary);
    white-space: pre;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    text-shadow: 0 0 10px var(--accent-green);
    overflow-x: auto;
}

.login-title {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.login-subtitle {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.login-form .input-group {
    margin-bottom: 1.5rem;
}

.login-form .prompt {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.login-form input[type="password"] {
    width: 100%;
    background: var(--bg-darker);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 1rem;
    padding: 0.875rem 1rem;
    border-radius: var(--radius);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.login-form input[type="password"]:focus {
    border-color: var(--accent-green);
    box-shadow: 0 0 0 3px rgba(0, 255, 0, 0.1);
}

.login-form input[type="password"]::placeholder {
    color: var(--text-muted);
}

.btn-login {
    width: 100%;
    font-family: var(--font-mono);
    font-size: 1rem;
    padding: 1rem;
    letter-spacing: 1px;
}

.login-footer {
    text-align: center;
    margin-top: 2rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.blink {
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

/* ========================================
   ANA LAYOUT
======================================== */

.layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.sidebar-header {
    padding: 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-weight: 700;
}

.logo-icon {
    color: var(--text-primary);
    font-size: 1rem;
}

.logo-text {
    color: var(--text-white);
    font-size: 1.1rem;
}

.logo:hover {
    text-shadow: 0 0 10px var(--accent-green);
}

/* Arama Kutusu */
.search-box {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

.search-box form {
    display: flex;
    gap: 0.5rem;
}

.search-box input {
    flex: 1;
    background: var(--bg-darker);
    border: 1px solid var(--border-color);
    color: var(--text-body);
    font-size: 0.875rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius);
    outline: none;
}

.search-box input:focus {
    border-color: var(--accent-green-dim);
}

.search-box input::placeholder {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.search-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem;
    border-radius: var(--radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-btn:hover {
    background: var(--border-color);
}

/* Kategori Agaci */
.category-tree {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0;
}

.category-header {
    padding: 0 1.25rem 0.75rem;
}

.category-title {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.category-list {
    list-style: none;
}

.category-item a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    color: var(--text-body);
    font-size: 0.9rem;
    border-left: 2px solid transparent;
    transition: all 0.2s;
}

.category-item a:hover {
    background: var(--bg-card);
    color: var(--text-primary);
    border-left-color: var(--accent-green-dim);
}

.category-item.active a {
    background: var(--bg-card);
    color: var(--text-primary);
    border-left-color: var(--accent-green);
}

.cat-icon {
    font-family: var(--font-mono);
    color: var(--text-muted);
    font-size: 0.8rem;
}

.cat-name {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cat-count {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 1.25rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.btn-new {
    text-align: center;
    font-family: var(--font-mono);
}

.btn-logout {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
    padding: 0.5rem;
}

.btn-logout:hover {
    color: var(--accent-red);
}

/* Ana Icerik */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 2rem 3rem;
    min-height: 100vh;
}

/* ========================================
   BUTONLAR
======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-body);
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-white);
    border-color: var(--text-muted);
}

.btn-primary {
    background: var(--accent-green-dim);
    border-color: var(--accent-green);
    color: var(--bg-dark);
    font-weight: 600;
}

.btn-primary:hover {
    background: var(--accent-green);
    color: var(--bg-darker);
    box-shadow: 0 0 15px rgba(0, 255, 0, 0.3);
}

.btn-secondary {
    background: transparent;
    border-color: var(--text-muted);
    color: var(--text-body);
}

.btn-secondary:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
}

.btn-danger {
    border-color: var(--accent-red);
    color: var(--accent-red);
}

.btn-danger:hover {
    background: var(--accent-red);
    color: var(--text-white);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8rem;
}

/* ========================================
   ALERT MESAJLARI
======================================== */

.alert {
    padding: 0.875rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.alert-success {
    background: rgba(0, 255, 0, 0.1);
    border: 1px solid var(--accent-green-dim);
    color: var(--text-primary);
}

.alert-error {
    background: rgba(255, 51, 51, 0.1);
    border: 1px solid var(--accent-red);
    color: var(--accent-red);
}

.alert-close {
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    font-family: var(--font-mono);
    opacity: 0.7;
}

.alert-close:hover {
    opacity: 1;
}

/* ========================================
   SAYFA BASLIKLARI
======================================== */

.page-header {
    margin-bottom: 2rem;
}

.breadcrumb {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.breadcrumb a {
    color: var(--text-muted);
}

.breadcrumb a:hover {
    color: var(--text-primary);
}

.breadcrumb .separator {
    margin: 0 0.5rem;
    color: var(--border-color);
}

.breadcrumb .current {
    color: var(--text-body);
}

.page-title {
    font-family: var(--font-mono);
    font-size: 1.75rem;
    color: var(--text-white);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.title-icon {
    color: var(--text-primary);
}

.page-subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* ========================================
   KONU LISTESI
======================================== */

.topic-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.topic-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.25rem;
    transition: all 0.2s;
}

.topic-card:hover {
    border-color: var(--border-green);
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.05);
}

.topic-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem;
    font-size: 0.8rem;
}

.topic-category a {
    font-family: var(--font-mono);
    color: var(--text-secondary);
    background: rgba(0, 255, 0, 0.1);
    padding: 0.2rem 0.5rem;
    border-radius: 2px;
}

.topic-date {
    font-family: var(--font-mono);
    color: var(--text-muted);
}

.topic-updated {
    font-family: var(--font-mono);
    color: var(--text-muted);
    font-size: 0.75rem;
}

.topic-title {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.topic-title a {
    color: var(--text-white);
}

.topic-title a:hover {
    color: var(--text-primary);
}

.topic-preview {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1rem;
    font-family: var(--font-mono);
}

.topic-actions {
    display: flex;
    gap: 0.5rem;
}

/* ========================================
   EMPTY STATE
======================================== */

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--bg-card);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius);
}

.empty-icon {
    font-family: var(--font-mono);
    font-size: 3rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.empty-state h3 {
    color: var(--text-white);
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.empty-state .hint {
    font-size: 0.85rem;
}

/* ========================================
   KONU DETAY SAYFASI
======================================== */

.topic-detail {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
}

.topic-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
}

.topic-detail-title {
    font-size: 1.5rem;
    color: var(--text-white);
    margin-bottom: 1rem;
}

.topic-meta-detail {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    font-size: 0.85rem;
}

.meta-item {
    font-family: var(--font-mono);
}

.meta-label {
    color: var(--text-muted);
    margin-right: 0.25rem;
}

.topic-content {
    padding: 2rem;
}

.topic-footer {
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--border-color);
    background: var(--bg-darker);
}

.topic-actions-detail {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* ========================================
   MARKDOWN ICERIK
======================================== */

.markdown-body {
    font-size: 0.95rem;
    line-height: 1.7;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
    color: var(--text-white);
    font-weight: 600;
    margin-top: 1.5em;
    margin-bottom: 0.75em;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.3em;
}

.markdown-body h1 { font-size: 1.75rem; }
.markdown-body h2 { font-size: 1.4rem; }
.markdown-body h3 { font-size: 1.2rem; }

.markdown-body p {
    margin-bottom: 1em;
}

.markdown-body ul,
.markdown-body ol {
    margin-bottom: 1em;
    padding-left: 1.5em;
}

.markdown-body li {
    margin-bottom: 0.25em;
}

.markdown-body blockquote {
    border-left: 3px solid var(--accent-green);
    padding: 0.5em 1em;
    margin: 1em 0;
    background: rgba(0, 255, 0, 0.05);
    color: var(--text-body);
}

.markdown-body code {
    font-family: var(--font-mono);
    background: var(--bg-darker);
    padding: 0.2em 0.4em;
    border-radius: 3px;
    font-size: 0.9em;
    color: var(--accent-cyan);
}

.markdown-body pre {
    margin: 1em 0;
}

.markdown-body pre code {
    display: block;
    padding: 0;
    background: none;
}

.markdown-body a {
    color: var(--text-primary);
    text-decoration: underline;
}

.markdown-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1em 0;
}

.markdown-body th,
.markdown-body td {
    border: 1px solid var(--border-color);
    padding: 0.5em 0.75em;
    text-align: left;
}

.markdown-body th {
    background: var(--bg-darker);
    color: var(--text-white);
}

.markdown-body img {
    max-width: 100%;
    border-radius: var(--radius);
}

.markdown-body hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 2em 0;
}

/* Kod Bloklari - Pygments */
.highlight {
    background: var(--bg-darker) !important;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    margin: 1em 0;
    overflow-x: auto;
    position: relative;
}

.highlight pre {
    padding: 1rem;
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.5;
    color: var(--text-body);
}

.copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.25rem 0.5rem;
    border-radius: 3px;
    cursor: pointer;
}

.copy-btn:hover {
    background: var(--accent-green-dim);
    color: var(--bg-dark);
    border-color: var(--accent-green);
}

/* Pygments Syntax Highlighting - Monokai Benzeri */
.highlight .hll { background-color: #49483e }
.highlight .c { color: #75715e } /* Comment */
.highlight .err { color: #960050; background-color: #1e0010 } /* Error */
.highlight .k { color: #66d9ef } /* Keyword */
.highlight .l { color: #ae81ff } /* Literal */
.highlight .n { color: #f8f8f2 } /* Name */
.highlight .o { color: #f92672 } /* Operator */
.highlight .p { color: #f8f8f2 } /* Punctuation */
.highlight .cm { color: #75715e } /* Comment.Multiline */
.highlight .cp { color: #75715e } /* Comment.Preproc */
.highlight .c1 { color: #75715e } /* Comment.Single */
.highlight .cs { color: #75715e } /* Comment.Special */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .kc { color: #66d9ef } /* Keyword.Constant */
.highlight .kd { color: #66d9ef } /* Keyword.Declaration */
.highlight .kn { color: #f92672 } /* Keyword.Namespace */
.highlight .kp { color: #66d9ef } /* Keyword.Pseudo */
.highlight .kr { color: #66d9ef } /* Keyword.Reserved */
.highlight .kt { color: #66d9ef } /* Keyword.Type */
.highlight .ld { color: #e6db74 } /* Literal.Date */
.highlight .m { color: #ae81ff } /* Literal.Number */
.highlight .s { color: #e6db74 } /* Literal.String */
.highlight .na { color: #a6e22e } /* Name.Attribute */
.highlight .nb { color: #f8f8f2 } /* Name.Builtin */
.highlight .nc { color: #a6e22e } /* Name.Class */
.highlight .no { color: #66d9ef } /* Name.Constant */
.highlight .nd { color: #a6e22e } /* Name.Decorator */
.highlight .ni { color: #f8f8f2 } /* Name.Entity */
.highlight .ne { color: #a6e22e } /* Name.Exception */
.highlight .nf { color: #a6e22e } /* Name.Function */
.highlight .nl { color: #f8f8f2 } /* Name.Label */
.highlight .nn { color: #f8f8f2 } /* Name.Namespace */
.highlight .nx { color: #a6e22e } /* Name.Other */
.highlight .py { color: #f8f8f2 } /* Name.Property */
.highlight .nt { color: #f92672 } /* Name.Tag */
.highlight .nv { color: #f8f8f2 } /* Name.Variable */
.highlight .ow { color: #f92672 } /* Operator.Word */
.highlight .w { color: #f8f8f2 } /* Text.Whitespace */
.highlight .mf { color: #ae81ff } /* Literal.Number.Float */
.highlight .mh { color: #ae81ff } /* Literal.Number.Hex */
.highlight .mi { color: #ae81ff } /* Literal.Number.Integer */
.highlight .mo { color: #ae81ff } /* Literal.Number.Oct */
.highlight .sb { color: #e6db74 } /* Literal.String.Backtick */
.highlight .sc { color: #e6db74 } /* Literal.String.Char */
.highlight .sd { color: #e6db74 } /* Literal.String.Doc */
.highlight .s2 { color: #e6db74 } /* Literal.String.Double */
.highlight .se { color: #ae81ff } /* Literal.String.Escape */
.highlight .sh { color: #e6db74 } /* Literal.String.Heredoc */
.highlight .si { color: #e6db74 } /* Literal.String.Interpol */
.highlight .sx { color: #e6db74 } /* Literal.String.Other */
.highlight .sr { color: #e6db74 } /* Literal.String.Regex */
.highlight .s1 { color: #e6db74 } /* Literal.String.Single */
.highlight .ss { color: #e6db74 } /* Literal.String.Symbol */
.highlight .bp { color: #f8f8f2 } /* Name.Builtin.Pseudo */
.highlight .vc { color: #f8f8f2 } /* Name.Variable.Class */
.highlight .vg { color: #f8f8f2 } /* Name.Variable.Global */
.highlight .vi { color: #f8f8f2 } /* Name.Variable.Instance */
.highlight .il { color: #ae81ff } /* Literal.Number.Integer.Long */

/* ========================================
   FORM ELEMANLARI
======================================== */

.topic-form {
    max-width: 900px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-white);
}

.label-hint {
    font-weight: 400;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.form-group input[type="text"],
.form-group select,
.form-group textarea {
    width: 100%;
    background: var(--bg-darker);
    border: 1px solid var(--border-color);
    color: var(--text-body);
    font-size: 0.95rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input[type="text"]:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent-green-dim);
    box-shadow: 0 0 0 3px rgba(0, 255, 0, 0.1);
}

.form-group textarea {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.6;
    resize: vertical;
    min-height: 300px;
}

.form-group select {
    cursor: pointer;
}

.form-group select option {
    background: var(--bg-dark);
    color: var(--text-body);
}

.editor-help {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.editor-help span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    background: var(--bg-darker);
    color: var(--text-muted);
    padding: 0.25rem 0.5rem;
    border-radius: 3px;
    border: 1px solid var(--border-color);
}

.form-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 2rem;
}

/* ========================================
   ARAMA SAYFASI
======================================== */

.search-page-box {
    margin-bottom: 2rem;
}

.search-form-large {
    display: flex;
    gap: 0.75rem;
}

.search-form-large input {
    flex: 1;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-body);
    font-size: 1rem;
    padding: 0.875rem 1rem;
    border-radius: var(--radius);
    outline: none;
}

.search-form-large input:focus {
    border-color: var(--accent-green-dim);
}

.search-result {
    border-left: 3px solid var(--accent-green-dim);
}

/* ========================================
   HIZLI KATEGORI EKLEME
======================================== */

.quick-add-section {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.section-title {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.quick-add-form {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.quick-add-form input {
    flex: 1;
    min-width: 200px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-body);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius);
    outline: none;
}

.quick-add-form input:focus {
    border-color: var(--accent-green-dim);
}

/* ========================================
   KATEGORI SAYFASI
======================================== */

.category-actions {
    margin-bottom: 1.5rem;
}

/* ========================================
   RESPONSIVE
======================================== */

@media (max-width: 1024px) {
    .main-content {
        padding: 1.5rem 2rem;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }
    
    .layout {
        flex-direction: column;
    }
    
    .main-content {
        margin-left: 0;
        padding: 1.5rem 1rem;
    }
    
    .sidebar-footer {
        flex-direction: row;
        justify-content: space-between;
    }
    
    .category-tree {
        max-height: 200px;
    }
    
    .topic-meta-detail {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .quick-add-form {
        flex-direction: column;
    }
    
    .ascii-art {
        font-size: 0.35rem;
    }
}