/* ── Design Tokens ──────────────────────────────────────── */
:root {
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'SFMono-Regular', Consolas, monospace;

    /* Content */
    --c-bg:              #ffffff;
    --c-bg-subtle:       #f9fafb;
    --c-border:          #e5e7eb;
    --c-border-subtle:   #f3f4f6;
    --c-text:            #111827;
    --c-text-2:          #4b5563;
    --c-text-3:          #9ca3af;

    /* Accent — Blue */
    --c-accent:          #3b82f6;
    --c-accent-hover:    #2563eb;
    --c-accent-subtle:   rgba(59, 130, 246, 0.12);
    --c-accent-border:   rgba(59, 130, 246, 0.3);

    /* Danger */
    --c-danger:          #dc2626;
    --c-danger-subtle:   #fef2f2;
    --c-danger-border:   #fecaca;

    /* Sidebar */
    --s-bg:              #0f0f0f;
    --s-border:          rgba(255, 255, 255, 0.07);
    --s-text:            #71717a;
    --s-text-hover:      #e4e4e7;
    --s-text-active:     #ffffff;
    --s-hover:           rgba(255, 255, 255, 0.05);
    --s-active:          rgba(255, 255, 255, 0.08);
    --s-accent:          #60a5fa;

    /* Code / Dark areas */
    --c-code-bg:         #0d1117;
    --c-code-text:       #e6edf3;
    --c-code-border:     #30363d;
    --c-inline-bg:       rgba(59, 130, 246, 0.12);
    --c-inline-text:     #93c5fd;

    /* Dark content area */
    --d-bg:              #0d1117;
    --d-bg-2:            #161b22;
    --d-border:          #30363d;
    --d-text:            #c9d1d9;
    --d-text-2:          #8b949e;
    --d-text-heading:    #f0f6fc;
}

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

/* ── Base ───────────────────────────────────────────────── */
body {
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.6;
    color: var(--c-text);
    background: var(--c-bg);
    height: 100vh;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ── Layout ─────────────────────────────────────────────── */
.layout {
    display: flex;
    height: 100vh;
}

/* ── Sidebar ────────────────────────────────────────────── */
.sidebar {
    width: 248px;
    min-width: 248px;
    background: var(--s-bg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-right: 1px solid var(--s-border);
    transition: width 0.2s ease, min-width 0.2s ease;
}

.layout.sidebar-collapsed .sidebar {
    width: 0;
    min-width: 0;
    border-right: none;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1rem;
    height: 52px;
    border-bottom: 1px solid var(--s-border);
    flex-shrink: 0;
}

.sidebar-header h2 {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--s-text-active);
    letter-spacing: -0.01em;
}

.logo-prefix {
    color: var(--s-accent);
    font-weight: 400;
}

.btn-new {
    background: none;
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--s-text);
    width: 26px;
    height: 26px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
    flex-shrink: 0;
}

.btn-new:hover {
    background: var(--s-hover);
    color: var(--s-text-active);
    border-color: var(--s-accent);
}

.menu {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem 0;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.1) transparent;
}

.menu::-webkit-scrollbar { width: 4px; }
.menu::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 2px; }

.menu-row {
    display: flex;
    align-items: center;
    border-left: 2px solid transparent;
    transition: background 0.12s, border-color 0.12s;
    position: relative;
}

.menu-row:hover   { background: var(--s-hover); }
.menu-row.active  { background: var(--s-active); border-left-color: var(--s-accent); }

.menu-item {
    flex: 1;
    padding: 0.45rem 0.875rem;
    background: none;
    border: none;
    text-align: left;
    color: var(--s-text);
    font-family: var(--font-mono);
    font-size: 0.775rem;
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
    transition: color 0.12s;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.menu-row:hover .menu-item  { color: var(--s-text-hover); }
.menu-row.active .menu-item { color: var(--s-text-active); font-weight: 500; }

.menu-delete {
    flex-shrink: 0;
    background: none;
    border: none;
    color: var(--s-text);
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    font-size: 0.7rem;
    opacity: 0;
    transition: color 0.12s, opacity 0.12s;
    border-radius: 3px;
    margin-right: 0.35rem;
}

.menu-row:hover .menu-delete { opacity: 1; }
.menu-delete:hover { color: #f87171; }

.loading {
    padding: 0.75rem 1rem;
    color: var(--s-text);
    font-family: var(--font-mono);
    font-size: 0.775rem;
}

/* 아이콘 */
.menu-pin-icon,
.menu-lock-icon {
    font-size: 0.65rem;
    opacity: 0.6;
    flex-shrink: 0;
}

/* 드래그 앤 드롭 */
.menu-row[draggable="true"]        { cursor: grab; }
.menu-row[draggable="true"]:active { cursor: grabbing; }
.menu-row.dragging                 { opacity: 0.3; }
.menu-row.drop-above               { border-top: 1px solid var(--s-accent); }
.menu-row.drop-below               { border-bottom: 1px solid var(--s-accent); }

/* ── Main Content ───────────────────────────────────────── */
.content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
    background: var(--d-bg);
}

/* ── Sidebar Toggle Button ──────────────────────────────── */
.btn-sidebar-toggle {
    background: none;
    border: 1px solid var(--d-border);
    color: var(--d-text-2);
    width: 28px;
    height: 28px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.15s;
}

.btn-sidebar-toggle:hover {
    background: rgba(255,255,255,0.06);
    color: var(--d-text);
    border-color: #444d56;
}

/* ── Toolbar ────────────────────────────────────────────── */
.toolbar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0 1.5rem;
    height: 52px;
    background: var(--d-bg-2);
    border-bottom: 1px solid var(--d-border);
    flex-shrink: 0;
}

.toolbar-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.05rem;
}

.toolbar-title {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--d-text-heading);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.toolbar-meta {
    font-size: 0.7rem;
    color: var(--d-text-2);
    white-space: nowrap;
    font-family: var(--font-mono);
}

.toolbar-create {
    flex: 1;
    min-width: 0;
}

.toolbar-create-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    max-width: 400px;
}

.toolbar-create-row .input-suffix {
    flex: 1;
    min-width: 0;
}

.lock-toggle {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.78rem;
    color: var(--d-text-2);
    cursor: pointer;
    white-space: nowrap;
    user-select: none;
    flex-shrink: 0;
}

.lock-toggle input[type="checkbox"] {
    accent-color: var(--c-accent);
    width: 13px;
    height: 13px;
    cursor: pointer;
}

.lock-toggle:hover { color: var(--d-text); }

.lock-password-input {
    background: var(--d-bg);
    border: 1px solid var(--d-border);
    border-radius: 4px;
    color: var(--d-text);
    font-size: 0.78rem;
    font-family: var(--font-sans);
    padding: 0.25rem 0.5rem;
    outline: none;
    width: 120px;
    flex-shrink: 0;
    transition: border-color 0.15s;
}
.lock-password-input:focus { border-color: var(--c-accent); }
.lock-password-input::placeholder { color: var(--d-text-2); opacity: 0.6; }

.toolbar-actions {
    display: flex;
    gap: 0.4rem;
    flex-shrink: 0;
}

/* ── Buttons ────────────────────────────────────────────── */
.btn {
    padding: 0.3rem 0.8rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    font-family: var(--font-sans);
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.15s;
    white-space: nowrap;
}

.btn-primary {
    background: var(--c-accent);
    color: #fff;
    border-color: var(--c-accent);
}
.btn-primary:hover { background: var(--c-accent-hover); border-color: var(--c-accent-hover); }

.btn-secondary {
    background: var(--d-bg);
    color: var(--d-text);
    border-color: var(--d-border);
}
.btn-secondary:hover { background: var(--d-bg-2); border-color: #444d56; }

.btn-ghost {
    background: none;
    color: var(--d-text-2);
    border-color: var(--d-border);
}
.btn-ghost:hover { background: rgba(255,255,255,0.05); color: var(--d-text); }

.btn-danger {
    background: transparent;
    color: #f87171;
    border-color: rgba(248, 113, 113, 0.3);
}
.btn-danger:hover { background: rgba(248, 113, 113, 0.08); }

/* ── Share Bar ──────────────────────────────────────────── */
.share-bar {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.45rem 1.5rem;
    background: var(--d-bg-2);
    border-bottom: 1px solid var(--d-border);
    flex-shrink: 0;
}

.share-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--d-text-2);
    flex-shrink: 0;
}

.share-url {
    flex: 1;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--s-accent);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
}

.btn-copy-link {
    flex-shrink: 0;
    background: none;
    border: 1px solid var(--d-border);
    color: var(--d-text-2);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s;
}

.btn-copy-link:hover {
    border-color: var(--s-accent);
    color: var(--s-accent);
}

/* ── View Area ──────────────────────────────────────────── */
#view-area {
    flex: 1;
    overflow-y: auto;
    padding: 2.5rem 3rem;
    background: var(--d-bg);
}

.placeholder {
    color: var(--d-text-2);
    font-size: 0.875rem;
    text-align: center;
    margin-top: 4rem;
    font-family: var(--font-mono);
}

/* ── Edit / Split Area ──────────────────────────────────── */
#edit-area {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.editor-pane {
    flex: 1;
    display: flex;
    overflow: hidden;
    padding: 1rem;
    min-width: 0;
    background: var(--d-bg);
}

.pane-divider {
    width: 1px;
    background: var(--d-border);
    flex-shrink: 0;
}

.preview-pane {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--d-bg);
    min-width: 0;
}

#preview-body {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem 2rem;
    min-height: 0;
}

.pane-h-divider {
    height: 1px;
    background: var(--d-border);
    flex-shrink: 0;
}

/* ── Editor ─────────────────────────────────────────────── */
.editor {
    width: 100%;
    height: 100%;
    resize: none;
    border: 1px solid var(--d-border);
    border-radius: 6px;
    padding: 1rem 1.125rem;
    font-family: var(--font-mono);
    font-size: 0.825rem;
    line-height: 1.75;
    color: var(--d-text);
    background: var(--d-bg-2);
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.editor::placeholder { color: #3d4450; }

.editor:focus {
    border-color: var(--c-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

/* ── Cheatsheet ─────────────────────────────────────────── */
.cheatsheet {
    flex-shrink: 0;
    overflow-y: auto;
    max-height: 240px;
    padding: 0.75rem 1.25rem 1rem;
    background: var(--c-code-bg);
}

.cheatsheet-title {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 500;
    color: #4d5566;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.cheatsheet-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.75rem;
}

.cheatsheet-table tr { border-bottom: 1px solid rgba(255,255,255,0.04); }
.cheatsheet-table tr:last-child { border-bottom: none; }

.cheatsheet-table td {
    padding: 0.25rem 0.5rem;
    vertical-align: middle;
    color: #6b7280;
}

.cs-code {
    font-family: var(--font-mono);
    color: #60a5fa !important;
    white-space: nowrap;
    width: 52%;
}

/* ── Markdown Body (Dark) ───────────────────────────────── */
.markdown-body {
    max-width: 780px;
    margin: 0;
}

.markdown-body h1 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--d-text-heading);
    border-bottom: 1px solid var(--d-border);
    padding-bottom: 0.5rem;
    margin-bottom: 1.25rem;
    margin-top: 0;
    letter-spacing: -0.025em;
    line-height: 1.3;
}

.markdown-body h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--d-text-heading);
    border-bottom: 1px solid rgba(48, 54, 61, 0.6);
    padding-bottom: 0.3rem;
    margin-top: 2.25rem;
    margin-bottom: 0.875rem;
    letter-spacing: -0.02em;
}

.markdown-body h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--d-text-heading);
    margin-top: 1.75rem;
    margin-bottom: 0.5rem;
}

.markdown-body h4 {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--d-text-2);
    margin-top: 1.5rem;
    margin-bottom: 0.4rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.markdown-body p {
    margin-bottom: 1rem;
    color: var(--d-text);
    line-height: 1.8;
}

.markdown-body ul,
.markdown-body ol {
    padding-left: 1.5rem;
    margin-bottom: 1rem;
    color: var(--d-text);
}

.markdown-body li {
    margin-bottom: 0.3rem;
    line-height: 1.75;
}

.markdown-body code {
    background: rgba(59, 130, 246, 0.1);
    color: #93c5fd;
    border-radius: 4px;
    padding: 0.125em 0.4em;
    font-family: var(--font-mono);
    font-size: 0.82em;
    font-weight: 500;
    border: 1px solid rgba(59, 130, 246, 0.15);
}

.markdown-body pre {
    background: #010409;
    border: 1px solid var(--d-border);
    border-radius: 8px;
    padding: 1.125rem 1.25rem;
    overflow-x: auto;
    margin-bottom: 1.25rem;
}

.markdown-body pre code {
    background: none;
    color: var(--c-code-text);
    padding: 0;
    font-size: 0.825rem;
    line-height: 1.7;
    font-weight: 400;
    border: none;
}

.markdown-body blockquote {
    border-left: 3px solid var(--c-accent);
    padding: 0.625rem 1.125rem;
    margin: 1.25rem 0;
    background: rgba(59, 130, 246, 0.07);
    border-radius: 0 6px 6px 0;
}

.markdown-body blockquote p {
    margin-bottom: 0;
    color: var(--d-text);
}

.markdown-body table {
    border-collapse: collapse;
    width: 100%;
    margin-bottom: 1.25rem;
    font-size: 0.875rem;
}

.markdown-body th {
    background: var(--d-bg-2);
    font-weight: 600;
    color: var(--d-text-heading);
    border: 1px solid var(--d-border);
    padding: 0.5rem 0.875rem;
    text-align: left;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.markdown-body td {
    border: 1px solid var(--d-border);
    padding: 0.5rem 0.875rem;
    color: var(--d-text);
}

.markdown-body tr:nth-child(even) td { background: rgba(255,255,255,0.02); }

.markdown-body a { color: #60a5fa; text-decoration: none; }
.markdown-body a:hover { text-decoration: underline; color: #93c5fd; }

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

.markdown-body del  { color: var(--d-text-2); }
.markdown-body strong { color: var(--d-text-heading); font-weight: 600; }
.markdown-body em     { color: var(--d-text); }

/* 미리보기 빈 상태 */
.preview-empty .placeholder { margin-top: 0; color: #3d4450; font-size: 0.75rem; }

/* ── Obsidian: 위키링크 ──────────────────────────────────── */
.wikilink {
    color: #a78bfa;
    text-decoration: none;
    border-bottom: 1px dashed rgba(167,139,250,0.4);
    transition: color 0.12s, border-color 0.12s;
}
.wikilink:hover { color: #c4b5fd; border-bottom-color: #c4b5fd; text-decoration: none; }

/* ── Obsidian: 하이라이트 ───────────────────────────────── */
.obs-highlight {
    background: rgba(250, 204, 21, 0.2);
    color: #fde68a;
    border-radius: 2px;
    padding: 0.05em 0.2em;
}

/* ── Obsidian: 임베드 ───────────────────────────────────── */
.obs-embed {
    border: 1px solid var(--d-border);
    border-left: 3px solid #a78bfa;
    border-radius: 0 6px 6px 0;
    padding: 0.6rem 1rem;
    margin: 0.75rem 0;
    font-size: 0.8rem;
    color: var(--d-text-2);
    font-family: var(--font-mono);
}
.obs-embed-icon { margin-right: 0.3rem; }
.obs-embed-content { padding: 0.5rem 0 0; }
.obs-embed-content.markdown-body { max-width: none; }

/* ── Obsidian: 콜아웃 ───────────────────────────────────── */
.callout {
    border-left: 3px solid;
    border-radius: 0 6px 6px 0;
    padding: 0.7rem 1rem;
    margin: 1rem 0;
}
.callout-title {
    font-weight: 600;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.35rem;
}
.callout-body { font-size: 0.88rem; color: var(--d-text); line-height: 1.7; }

.callout-note    { border-color: #60a5fa; background: rgba(96,165,250,0.07); }
.callout-note    .callout-title { color: #60a5fa; }
.callout-info    { border-color: #38bdf8; background: rgba(56,189,248,0.07); }
.callout-info    .callout-title { color: #38bdf8; }
.callout-tip     { border-color: #34d399; background: rgba(52,211,153,0.07); }
.callout-tip     .callout-title { color: #34d399; }
.callout-success { border-color: #4ade80; background: rgba(74,222,128,0.07); }
.callout-success .callout-title { color: #4ade80; }
.callout-warning { border-color: #fbbf24; background: rgba(251,191,36,0.07); }
.callout-warning .callout-title { color: #fbbf24; }
.callout-caution { border-color: #fb923c; background: rgba(251,146,60,0.07); }
.callout-caution .callout-title { color: #fb923c; }
.callout-danger  { border-color: #f87171; background: rgba(248,113,113,0.07); }
.callout-danger  .callout-title { color: #f87171; }
.callout-error   { border-color: #f87171; background: rgba(248,113,113,0.07); }
.callout-error   .callout-title { color: #f87171; }
.callout-abstract{ border-color: #818cf8; background: rgba(129,140,248,0.07); }
.callout-abstract .callout-title { color: #818cf8; }
.callout-question{ border-color: #e879f9; background: rgba(232,121,249,0.07); }
.callout-question .callout-title { color: #e879f9; }

/* ── Modal (Auth) ───────────────────────────────────────── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    backdrop-filter: blur(4px);
}

.modal {
    background: var(--d-bg-2);
    border: 1px solid var(--d-border);
    border-radius: 10px;
    padding: 1.75rem;
    width: 400px;
    max-width: calc(100vw - 2rem);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.modal h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--d-text-heading);
}

.modal label {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--d-text-2);
}

.modal .input-block {
    background: var(--d-bg);
    border-color: var(--d-border);
    color: var(--d-text);
}

.modal .input-block::placeholder { color: var(--d-text-2); opacity: 0.5; }

.modal .input-block:focus {
    border-color: var(--c-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.modal-sm {
    width: 340px;
    align-items: center;
    text-align: center;
}

.auth-icon { font-size: 1.75rem; }

.auth-desc {
    font-size: 0.8rem;
    color: var(--d-text-2);
    margin-top: -0.25rem;
}

.auth-error {
    font-size: 0.78rem;
    color: #f87171;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.4rem;
    margin-top: 0.25rem;
}

/* ── Form Inputs ────────────────────────────────────────── */
.input-suffix {
    display: flex;
    align-items: center;
    border: 1px solid var(--d-border);
    border-radius: 6px;
    overflow: hidden;
    background: var(--d-bg);
    transition: border-color 0.15s, box-shadow 0.15s;
}

.input-suffix:focus-within {
    border-color: var(--c-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.input {
    flex: 1;
    border: none;
    outline: none;
    padding: 0.45rem 0.75rem;
    font-size: 0.85rem;
    color: var(--d-text);
    background: transparent;
    font-family: var(--font-sans);
}

.suffix {
    padding: 0.45rem 0.75rem;
    background: var(--d-bg-2);
    color: var(--d-text-2);
    font-size: 0.8rem;
    font-family: var(--font-mono);
    border-left: 1px solid var(--d-border);
}

.input-block {
    width: 100%;
    border: 1px solid var(--c-border);
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    color: var(--c-text);
    background: var(--c-bg);
    outline: none;
    font-family: var(--font-sans);
    transition: border-color 0.15s, box-shadow 0.15s;
}

.input-block:focus {
    border-color: var(--c-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

/* ── Splash Screen ──────────────────────────────────────── */
.splash {
    position: fixed;
    inset: 0;
    background: #0a0a0a;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
}

.splash-card {
    width: 360px;
    max-width: calc(100vw - 2rem);
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    padding: 2.5rem 2rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    background: #111111;
}

.splash-logo {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 500;
    color: #ffffff;
    text-align: center;
    letter-spacing: -0.01em;
}

.splash-logo .logo-prefix { color: #60a5fa; }

.splash-desc {
    font-size: 0.8rem;
    color: #52525b;
    text-align: center;
    margin-top: -0.5rem;
    font-family: var(--font-mono);
}

.splash-input-wrap {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.splash-input-wrap .input-block {
    background: #0a0a0a;
    border-color: rgba(255,255,255,0.1);
    color: #e4e4e7;
    font-family: var(--font-mono);
    font-size: 0.825rem;
}

.splash-input-wrap .input-block::placeholder { color: #3f3f46; }

.splash-input-wrap .input-block:focus {
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

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

.splash-actions .btn { flex: 1; justify-content: center; font-family: var(--font-mono); font-size: 0.775rem; }

.splash-actions .btn-primary  { background: #3b82f6; border-color: #3b82f6; }
.splash-actions .btn-primary:hover  { background: #2563eb; border-color: #2563eb; }

.splash-actions .btn-ghost {
    background: none;
    color: #52525b;
    border-color: rgba(255,255,255,0.08);
}
.splash-actions .btn-ghost:hover { background: rgba(255,255,255,0.04); color: #a1a1aa; }

/* ── Animations ─────────────────────────────────────────── */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%       { transform: translateX(-6px); }
    40%       { transform: translateX(6px); }
    60%       { transform: translateX(-4px); }
    80%       { transform: translateX(4px); }
}

.shake { animation: shake 0.35s ease; }

/* ── Scrollbar ──────────────────────────────────────────── */
#view-area, #preview-body {
    scrollbar-width: thin;
    scrollbar-color: var(--c-border) transparent;
}

#view-area::-webkit-scrollbar,
#preview-body::-webkit-scrollbar { width: 5px; }

#view-area::-webkit-scrollbar-thumb,
#preview-body::-webkit-scrollbar-thumb { background: var(--c-border); border-radius: 3px; }

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 768px) {
    .sidebar { width: 210px; min-width: 210px; }
    #view-area { padding: 1.5rem 1.25rem; }
    .share-bar { padding: 0.4rem 1rem; }
    .share-url { font-size: 0.65rem; }
}