/* ── Variables ─────────────────────────────────────────────────── */
:root {
  --bg:          #0f1117;
  --surface:     #1a1d27;
  --surface-2:   #242736;
  --border:      #2e3244;
  --accent:      #6366f1;
  --accent-h:    #818cf8;
  --danger:      #ef4444;
  --success:     #22c55e;
  --text:        #e2e8f0;
  --text-muted:  #64748b;
  --text-dim:    #94a3b8;
  --sidebar-w:   240px;
  --radius:      8px;
  --radius-lg:   12px;
  font-size: 15px;
}

/* ── Reset ──────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body { background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; line-height: 1.6; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-h); }
input, textarea, button, select { font-family: inherit; font-size: inherit; }
code { font-family: 'Fira Code', 'Cascadia Code', monospace; }

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

/* ── Sidebar ────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow-y: auto;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 18px 16px;
  border-bottom: 1px solid var(--border);
}
.brand-icon { font-size: 22px; color: var(--accent); }
.brand-name { font-weight: 700; font-size: 1.1rem; letter-spacing: -0.5px; color: var(--text); }

.sidebar-nav { flex: 1; padding: 12px 8px; }
.nav-section { margin-bottom: 20px; }
.nav-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  padding: 0 10px 6px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius);
  color: var(--text-dim);
  font-size: 0.9rem;
  transition: background 0.15s, color 0.15s;
}
.nav-item svg { width: 16px; height: 16px; flex-shrink: 0; }
.nav-item:hover { background: var(--surface-2); color: var(--text); }
.nav-item.active { background: rgba(99,102,241,0.15); color: var(--accent); }

.sidebar-footer {
  padding: 12px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}
.user-info { display: flex; align-items: center; gap: 8px; flex: 1; min-width: 0; }
.user-avatar {
  width: 30px; height: 30px;
  background: var(--accent);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem; font-weight: 700; color: white;
  flex-shrink: 0;
}
.user-name { font-size: 0.85rem; color: var(--text-dim); truncate: ellipsis; overflow: hidden; white-space: nowrap; }

.btn-logout {
  background: none; border: 1px solid var(--border);
  border-radius: var(--radius); padding: 5px 7px;
  color: var(--text-muted); cursor: pointer;
  display: flex; align-items: center;
  transition: color 0.15s, border-color 0.15s;
}
.btn-logout svg { width: 15px; height: 15px; }
.btn-logout:hover { color: var(--danger); border-color: var(--danger); }

/* ── Main ───────────────────────────────────────────────────────── */
.main {
  flex: 1;
  overflow-y: auto;
  padding: 28px 32px;
  max-width: 1200px;
}

/* ── Page header ────────────────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  gap: 16px;
}
.page-header-left { display: flex; align-items: center; gap: 14px; }
.page-header-actions { display: flex; gap: 8px; }
.page-title { font-size: 1.4rem; font-weight: 700; color: var(--text); }

.btn-back {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 0.85rem; color: var(--text-muted);
  padding: 4px 8px; border-radius: var(--radius);
  transition: color 0.15s;
}
.btn-back svg { width: 15px; height: 15px; }
.btn-back:hover { color: var(--text); }

/* ── Buttons ────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: var(--radius);
  font-size: 0.875rem; font-weight: 500;
  cursor: pointer; border: none; transition: opacity 0.15s, background 0.15s;
  white-space: nowrap;
}
.btn svg { width: 15px; height: 15px; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover:not(:disabled) { background: var(--accent-h); color: white; }

.btn-secondary {
  background: var(--surface-2); color: var(--text-dim);
  border: 1px solid var(--border);
}
.btn-secondary:hover:not(:disabled) { color: var(--text); border-color: var(--text-muted); }

.btn-danger { background: rgba(239,68,68,0.12); color: var(--danger); border: 1px solid rgba(239,68,68,0.25); }
.btn-danger:hover:not(:disabled) { background: rgba(239,68,68,0.2); }

.btn-sm { padding: 5px 10px; font-size: 0.8rem; }
.btn-full { width: 100%; justify-content: center; }

.btn-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--surface-2);
  color: var(--text-muted); cursor: pointer; transition: color 0.15s, border-color 0.15s;
}
.btn-icon svg { width: 14px; height: 14px; }
.btn-icon:hover { color: var(--text); border-color: var(--text-muted); }
.btn-icon.btn-danger:hover { color: var(--danger); border-color: var(--danger); }
.btn-copy:hover { color: var(--accent); border-color: var(--accent); }

/* ── Forms ──────────────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block; font-size: 0.8rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--text-muted); margin-bottom: 6px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius);
  padding: 9px 12px;
  outline: none;
  transition: border-color 0.15s;
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--accent); }
.form-group textarea { resize: vertical; min-height: 80px; }
.string-list-items { display: flex; flex-direction: column; gap: 6px; margin-bottom: 6px; }
.string-list-row { display: flex; gap: 6px; }
.string-list-row input { flex: 1; }
.string-list-remove {
  flex-shrink: 0; background: none; border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text-muted); cursor: pointer;
  padding: 0 10px; font-size: 1rem; line-height: 1;
}
.string-list-remove:hover { color: var(--danger); border-color: var(--danger); }
.string-list-add {
  background: none; border: 1px dashed var(--border); border-radius: var(--radius);
  color: var(--text-muted); cursor: pointer; font-size: 0.8rem;
  padding: 5px 10px; width: 100%; text-align: center;
}
.string-list-add:hover { border-color: var(--accent); color: var(--accent); }

/* ── Login ──────────────────────────────────────────────────────── */
.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-container { width: 100%; max-width: 380px; padding: 16px; }
.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.login-logo { text-align: center; margin-bottom: 28px; }
.brand-icon-lg { font-size: 36px; color: var(--accent); }
.login-logo h1 { font-size: 1.6rem; font-weight: 800; margin: 6px 0 4px; }
.login-logo p { font-size: 0.85rem; color: var(--text-muted); }

.alert {
  padding: 10px 14px; border-radius: var(--radius);
  font-size: 0.875rem; margin-bottom: 16px;
}
.alert-error { background: rgba(239,68,68,0.12); border: 1px solid rgba(239,68,68,0.3); color: #fca5a5; }

/* ── Dashboard stats ────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  position: relative;
}
.stat-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.stat-icon svg { width: 20px; height: 20px; }
.media-icon { background: rgba(99,102,241,0.15); color: var(--accent); }
.content-icon { background: rgba(34,197,94,0.12); color: var(--success); }
.stat-info { flex: 1; }
.stat-value { display: block; font-size: 1.8rem; font-weight: 700; line-height: 1; }
.stat-label { font-size: 0.8rem; color: var(--text-muted); }
.stat-link {
  position: absolute; bottom: 12px; right: 14px;
  font-size: 0.75rem; color: var(--text-muted);
}

.quick-actions h2 { font-size: 1rem; font-weight: 600; margin-bottom: 14px; color: var(--text-dim); }
.actions-grid { display: flex; flex-wrap: wrap; gap: 10px; }
.action-card {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 10px 16px;
  font-size: 0.875rem; color: var(--text-dim);
  transition: border-color 0.15s, color 0.15s;
}
.action-card svg { width: 16px; height: 16px; }
.action-card:hover { border-color: var(--accent); color: var(--accent); }

/* ── Media grid ─────────────────────────────────────────────────── */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 24px;
  transition: border-color 0.2s, background 0.2s;
}
.upload-zone.drag-over {
  border-color: var(--accent);
  background: rgba(99,102,241,0.05);
}
.upload-placeholder {
  padding: 32px;
  text-align: center;
  color: var(--text-muted);
}
.upload-placeholder svg { width: 40px; height: 40px; margin-bottom: 10px; }
.upload-placeholder p { font-size: 0.9rem; }

.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 14px;
}
.media-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.15s;
}
.media-card:hover { border-color: var(--text-muted); }
.media-preview {
  height: 130px;
  background: var(--surface-2);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.media-preview img { width: 100%; height: 100%; object-fit: cover; }
.media-icon-placeholder svg { width: 40px; height: 40px; color: var(--text-muted); }
.media-info {
  padding: 8px 10px;
  display: flex; align-items: center; justify-content: space-between; gap: 6px;
}
.media-name {
  font-size: 0.75rem; color: var(--text-dim);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  flex: 1;
}
.media-actions { display: flex; gap: 4px; flex-shrink: 0; }

/* ── Posts list ─────────────────────────────────────────────────── */
.posts-list { display: flex; flex-direction: column; gap: 8px; }
.post-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: border-color 0.15s;
}
.post-item:hover { border-color: var(--text-muted); }
.post-meta { min-width: 90px; }
.post-date { font-size: 0.75rem; color: var(--text-muted); font-family: monospace; }
.post-content { flex: 1; min-width: 0; }
.post-title { font-size: 0.95rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.post-desc { font-size: 0.8rem; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.post-actions { display: flex; gap: 6px; flex-shrink: 0; }

/* ── Editor layout ──────────────────────────────────────────────── */
.editor-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 20px;
  align-items: start;
}
.editor-main { min-width: 0; }
.editor-sidebar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px;
  position: sticky;
  top: 0;
}
.form-group-editor { margin-bottom: 0; }

/* Editor mode switcher */
.editor-mode-switcher {
  display: flex;
  gap: 4px;
  margin-bottom: 8px;
}
.editor-mode-btn {
  padding: 4px 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.8rem;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
}
.editor-mode-btn:hover { color: var(--text); border-color: var(--accent); }
.editor-mode-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* Textarea mode */
#markdown-editor {
  width: 100%;
  min-height: 520px;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  resize: vertical;
  font-family: 'Fira Code', 'Cascadia Code', monospace;
  font-size: 0.9rem;
  line-height: 1.7;
}

/* Toast UI container */
#toastui-container { display: none; border-radius: var(--radius); overflow: hidden; }
.toastui-editor-dark .toastui-editor-defaultUI { background: var(--surface); border-color: var(--border); }
.toastui-editor-dark .toastui-editor-toolbar { background: var(--surface-2); border-color: var(--border); }


.filename-display {
  display: block;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px 10px;
  font-size: 0.8rem;
  color: var(--text-muted);
  word-break: break-all;
}

/* ── Settings ───────────────────────────────────────────────────── */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 20px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.card-header h2 {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.95rem; font-weight: 600;
}
.card-header h2 svg { width: 16px; height: 16px; color: var(--accent); }
.card-body { padding: 20px; }

.setting-desc { font-size: 0.875rem; color: var(--text-dim); margin-bottom: 12px; }
.setting-hint { font-size: 0.8rem; color: var(--text-muted); margin-top: 16px; }
.text-muted { color: var(--text-muted) !important; }
.code-block {
  display: block;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: 0.85rem;
  color: var(--accent-h);
  margin-bottom: 16px;
  word-break: break-all;
}

.btn-build { margin-top: 4px; }
.build-output {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: var(--radius);
  font-family: monospace;
  font-size: 0.82rem;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 240px;
  overflow-y: auto;
}
.build-output.success { background: rgba(34,197,94,0.1); border: 1px solid rgba(34,197,94,0.25); color: #86efac; }
.build-output.error { background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.25); color: #fca5a5; }
.hidden { display: none !important; }

.config-table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.config-table td { padding: 8px 0; vertical-align: top; }
.config-table td:first-child { color: var(--text-muted); width: 130px; padding-right: 12px; }
.config-table tr + tr td { border-top: 1px solid var(--border); }

.badge {
  display: inline-block;
  background: rgba(99,102,241,0.15);
  color: var(--accent-h);
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 0.75rem;
  margin: 2px;
}

/* ── Empty state ────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.empty-state svg { width: 56px; height: 56px; margin-bottom: 16px; }
.empty-state p { font-size: 0.9rem; line-height: 1.8; }

/* ── Toast ──────────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 24px; right: 24px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 18px;
  font-size: 0.875rem;
  color: var(--text);
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  animation: slideIn 0.2s ease, fadeOut 0.3s ease 2.2s forwards;
  z-index: 999;
}
@keyframes slideIn { from { transform: translateY(12px); opacity: 0; } to { transform: none; opacity: 1; } }
@keyframes fadeOut { to { opacity: 0; transform: translateY(8px); } }

/* ── Spinner ────────────────────────────────────────────────────── */
.spin { animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Mobile topbar & drawer ─────────────────────────────────────── */
.mobile-topbar { display: none; }
.sidebar-backdrop { display: none; }

.btn-menu {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  cursor: pointer;
  padding: 5px 7px;
  display: flex;
  align-items: center;
  transition: color 0.15s, border-color 0.15s;
  flex-shrink: 0;
}
.btn-menu svg { width: 18px; height: 18px; }
.btn-menu:hover { color: var(--text); border-color: var(--text-muted); }

/* ── Responsive ─────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: 0; top: 0;
    height: 100%;
    z-index: 200;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
  }
  body.sidebar-open .sidebar { transform: none; }

  .sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 199;
  }
  body.sidebar-open .sidebar-backdrop { display: block; }

  .mobile-topbar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    margin: -16px -16px 16px;
  }
  .mobile-topbar .brand-icon { font-size: 18px; color: var(--accent); }
  .mobile-topbar .brand-name { font-weight: 700; font-size: 1rem; color: var(--text); }

  .main { padding: 16px; }
  .editor-layout { grid-template-columns: 1fr; }
  .editor-sidebar { position: static; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}