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

:root {
  --sidebar-w: 280px;
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #22263a;
  --border: #2a2e42;
  --text: #e2e8f0;
  --text-muted: #7c8398;
  --accent: #4f8ef7;
  --accent-dim: rgba(79,142,247,0.12);
  --green: #22c55e;
  --yellow: #f59e0b;
  --red: #ef4444;
  --code-bg: #13151f;
  --code-text: #cdd6f4;
  --radius: 10px;
  --font-mono: 'JetBrains Mono', monospace;
}

[data-theme="light"] {
  --bg: #f4f6fb;
  --surface: #ffffff;
  --surface2: #edf0f7;
  --border: #d8dde8;
  --text: #1a1d2e;
  --text-muted: #5a6175;
  --accent: #2563eb;
  --accent-dim: rgba(37,99,235,0.09);
  --code-bg: #e8ecf5;
  --code-text: #1e2235;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  min-height: 100vh;
  font-size: 15px;
  line-height: 1.6;
  transition: background .2s, color .2s;
}

/* ── LOGO SVG ── */
.logo-svg ellipse,
.logo-svg path {
  stroke: var(--accent);
  stroke-width: 1.8px;
}

.logo-svg-lg ellipse,
.logo-svg-lg path {
  stroke: var(--accent);
  stroke-width: 1.6px;
}

/* ── SIDEBAR ── */
.sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: transform .25s ease, background .2s, border-color .2s;
  overflow: hidden;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 16px 14px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.3px;
}

.logo-text strong { color: var(--accent); }

.sidebar-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px; height: 32px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-muted);
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}

.theme-toggle:hover { background: var(--accent-dim); color: var(--accent); border-color: var(--accent); }

.theme-toggle svg { stroke: currentColor; }

[data-theme="dark"]  .icon-moon { display: none; }
[data-theme="light"] .icon-sun  { display: none; }

.sidebar-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 18px;
  padding: 4px 6px;
}

/* search */
.search-wrapper {
  position: relative;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.search-icon {
  position: absolute;
  left: 28px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 32px 8px 36px;
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: border-color .2s, background .2s;
}

.search-input:focus { border-color: var(--accent); }
.search-input::placeholder { color: var(--text-muted); }

.search-clear {
  position: absolute;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 12px;
  display: none;
  padding: 2px;
}

.search-clear.visible { display: block; }

/* ── SEARCH DROPDOWN ── */
.search-dropdown {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  max-height: 320px;
  overflow-y: auto;
  flex-shrink: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.search-dd-section {
  padding: 8px 16px 4px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  background: var(--surface2);
}

.search-dd-section:first-child { border-top: none; }

.search-dd-item {
  padding: 9px 16px;
  cursor: pointer;
  transition: background .15s;
  border-left: 3px solid transparent;
}

.search-dd-item:hover {
  background: var(--accent-dim);
  border-left-color: var(--accent);
}

.search-dd-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 2px;
  line-height: 1.4;
}

.search-dd-title mark {
  background: rgba(245,158,11,.3);
  color: #f59e0b;
  border-radius: 2px;
  padding: 0 2px;
  font-style: normal;
}

.search-dd-sub {
  font-size: 11px;
  color: var(--text-muted);
}

.search-dd-empty {
  padding: 16px;
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
}

/* nav */
.nav {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0 24px;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.nav-category { margin-bottom: 4px; }

.nav-category-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
  transition: color .15s;
}

.nav-category-header:hover { color: var(--text); }

.nav-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.nav-chevron {
  margin-left: auto;
  font-size: 10px;
  transition: transform .2s;
}

.nav-category.collapsed .nav-chevron { transform: rotate(-90deg); }
.nav-category.collapsed .nav-items { display: none; }

.nav-item {
  display: block;
  padding: 8px 16px 8px 36px;
  font-size: 13.5px;
  color: var(--text-muted);
  cursor: pointer;
  transition: background .15s, color .15s;
  border-left: 3px solid transparent;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-item:hover { background: var(--accent-dim); color: var(--text); }

.nav-item.active {
  background: var(--accent-dim);
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 500;
}

/* ── MAIN ── */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* topbar */
.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 56px 0;
  min-height: 56px;
}

.menu-btn {
  display: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 20px;
  width: 42px; height: 42px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: background .2s;
  flex-shrink: 0;
}

.back-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 13px;
  font-family: inherit;
  padding: 7px 14px;
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}

.back-btn:hover { background: var(--accent-dim); color: var(--accent); border-color: var(--accent); }

.content-area {
  padding: 28px 56px 48px;
  max-width: 860px;
  width: 100%;
  flex: 1;
}

/* ── WELCOME ── */
.welcome-logo {
  margin-bottom: 20px;
}

.welcome-inner h1 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.welcome-inner h1 strong { color: var(--accent); }

.welcome-sub {
  color: var(--text-muted);
  font-size: 16px;
  margin-bottom: 40px;
}

.welcome-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 16px;
}

.welcome-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  cursor: pointer;
  transition: border-color .2s, transform .15s, background .2s;
}

.welcome-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.welcome-card-dot {
  width: 12px; height: 12px;
  border-radius: 50%;
  margin-bottom: 12px;
}

.welcome-card h3 { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.welcome-card p  { font-size: 12px; color: var(--text-muted); }

/* ── CATEGORY VIEW ── */
.category-view { animation: fadeIn .2s ease; }

.category-view-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.category-view-header h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin: 0;
}

.category-view-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

.category-view-count {
  font-size: 13px;
  color: var(--text-muted);
  margin-left: auto;
}

.topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}

.topic-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
  cursor: pointer;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}

.topic-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0,0,0,.12);
}

.topic-card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
  line-height: 1.4;
}

.topic-card-desc {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 8px;
}

.topic-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 8px;
}

/* ── TOPIC VIEW ── */
.topic-view { animation: fadeIn .2s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.topic-breadcrumb {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.topic-title {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.4px;
  margin-bottom: 8px;
}

.topic-description {
  color: var(--text-muted);
  font-size: 14.5px;
  margin-bottom: 28px;
  line-height: 1.7;
}

.topic-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 28px;
}

.tag {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 3px 10px;
  font-size: 11px;
  color: var(--text-muted);
}

/* callouts */
.callout {
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 20px;
  font-size: 13.5px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  border: 1px solid transparent;
}

.callout-icon { font-size: 16px; flex-shrink: 0; margin-top: 1px; }

.callout.warning { background: rgba(245,158,11,.08); border-color: rgba(245,158,11,.25); color: #d97706; }
.callout.info    { background: rgba(59,130,246,.08); border-color: rgba(59,130,246,.25); color: #3b82f6; }
.callout.tip     { background: rgba(34,197,94,.08);  border-color: rgba(34,197,94,.25);  color: #16a34a; }
.callout.result  { background: rgba(79,142,247,.08); border-color: rgba(79,142,247,.25); color: var(--accent); }

[data-theme="light"] .callout.warning { color: #92400e; }
[data-theme="light"] .callout.info    { color: #1d4ed8; }
[data-theme="light"] .callout.tip     { color: #15803d; }

/* steps */
.steps-section { margin-bottom: 28px; }

.steps-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .8px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.step {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
  align-items: flex-start;
}

.step-num {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.step-body { flex: 1; min-width: 0; }

.step-label {
  font-size: 13.5px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

/* code block */
.code-block {
  position: relative;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: background .2s;
}

.code-block pre {
  padding: 14px 52px 14px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.65;
  color: var(--code-text);
  overflow-x: auto;
  white-space: pre;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
  transition: color .2s;
}

.copy-btn {
  position: absolute;
  top: 8px; right: 8px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 11px;
  padding: 4px 8px;
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
  font-family: inherit;
}

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

/* ── SEARCH RESULTS ── */
.search-results { animation: fadeIn .2s ease; }

.search-results-header {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.search-results-header strong { color: var(--text); }

.search-result-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 10px;
  cursor: pointer;
  transition: border-color .15s, transform .1s, background .2s;
}

.search-result-item:hover { border-color: var(--accent); transform: translateX(4px); }

.search-result-cat  { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .8px; margin-bottom: 4px; }
.search-result-title{ font-size: 15px; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.search-result-desc { font-size: 13px; color: var(--text-muted); }

.search-no-results {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.search-no-results .icon { font-size: 40px; display: block; margin-bottom: 12px; }

/* ── AUTHOR CARD ── */
.author-card {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-top: 48px;
  max-width: 600px;
  transition: background .2s, border-color .2s;
}

.author-avatar {
  width: 80px; height: 80px;
  border-radius: 50%;
  border: 2.5px solid var(--accent);
  overflow: hidden;
  flex-shrink: 0;
}
.author-avatar img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center 15%;
  display: block;
}

.author-info { flex: 1; }

.author-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 3px;
}

.author-role {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.author-bio {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
  line-height: 1.5;
}

.author-certs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.author-cert {
  background: var(--accent-dim);
  border: 1px solid rgba(79,142,247,0.2);
  border-radius: 20px;
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
}

.author-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.author-link {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color .15s;
}

.author-link:hover { color: var(--accent); }
.author-link svg { stroke: currentColor; flex-shrink: 0; }

.author-link-inline {
  color: var(--accent);
  text-decoration: none;
  transition: opacity .15s;
}

.author-link-inline:hover { opacity: 0.75; }

/* ── FOOTER ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 20px 56px;
  background: var(--surface);
  transition: background .2s, border-color .2s;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
  max-width: 860px;
}

.footer-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.footer-company {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

.footer-center {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-left: auto;
}

.footer-cert {
  display: flex;
  align-items: center;
  gap: 5px;
  background: var(--accent-dim);
  border: 1px solid rgba(79,142,247,0.2);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 500;
  color: var(--accent);
}

.footer-cert svg { stroke: var(--accent); flex-shrink: 0; }

.footer-right {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: flex-end;
}

.footer-link {
  font-size: 12px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color .15s;
}

.footer-link:hover { color: var(--accent); }

.footer-linkedin {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color .15s;
}

.footer-linkedin:hover { color: #0a66c2; }

/* ── SIDEBAR BOTTOM (lock button) ── */
.sidebar-bottom {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.admin-lock-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 12px;
  font-family: inherit;
  padding: 7px 12px;
  cursor: pointer;
  transition: all .15s;
  width: 100%;
}
.admin-lock-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }
.admin-lock-btn svg { stroke: currentColor; flex-shrink: 0; }

.admin-mode .admin-lock-btn {
  border-color: rgba(245,158,11,.4);
  color: #f59e0b;
  background: rgba(245,158,11,.08);
}
.admin-mode .admin-lock-btn:hover { background: rgba(245,158,11,.15); }

/* ── TOAST ── */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 500;
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 13.5px;
  font-weight: 500;
  max-width: 360px;
  box-shadow: 0 8px 24px rgba(0,0,0,.3);
  animation: slideUp .2s ease;
  transition: opacity .3s;
}
.toast.hidden { display: none; }
.toast-success { background: #166534; color: #bbf7d0; border: 1px solid #15803d; }
.toast-error   { background: #7f1d1d; color: #fecaca; border: 1px solid #991b1b; }

[data-theme="light"] .toast-success { background: #dcfce7; color: #14532d; border-color: #16a34a; }
[data-theme="light"] .toast-error   { background: #fee2e2; color: #7f1d1d; border-color: #dc2626; }

@keyframes slideUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── MODAL SM ── */
.modal-sm { max-width: 420px; }

/* ── FORM ERROR ── */
.form-error {
  font-size: 12px;
  color: var(--red);
  margin-top: 4px;
  min-height: 16px;
}

/* ── TOKEN INSTRUCTIONS ── */
.token-instructions {
  margin-top: 12px;
  padding: 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.7;
}
.token-instructions strong { color: var(--text); }
.token-instructions em { font-style: normal; color: var(--accent); }

/* ── ADMIN NAV ── */
.nav-add-btn {
  display: block;
  width: calc(100% - 32px);
  margin: 6px 16px 4px 36px;
  padding: 6px 10px;
  background: none;
  border: 1px dashed var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
  text-align: left;
  transition: border-color .15s, color .15s, background .15s;
}
.nav-add-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }

.nav-export-btn {
  display: block;
  width: calc(100% - 32px);
  margin: 16px 16px 8px;
  padding: 9px 14px;
  background: var(--accent-dim);
  border: 1px solid rgba(79,142,247,0.3);
  border-radius: 8px;
  color: var(--accent);
  font-size: 12.5px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
.nav-export-btn:hover { background: rgba(79,142,247,0.2); }

/* admin mode indicator in topbar */
.admin-mode .back-btn::before {
  content: 'ADMIN · ';
  color: #f59e0b;
  font-weight: 700;
  font-size: 10px;
  letter-spacing: .5px;
}

/* ── ADMIN TOPIC BAR ── */
.admin-topic-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}
.admin-topic-btn {
  padding: 6px 14px;
  border-radius: 7px;
  font-size: 12.5px;
  font-family: inherit;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  transition: all .15s;
}
.admin-topic-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }
.admin-topic-delete:hover { border-color: var(--red); color: var(--red); background: rgba(239,68,68,.08); }

/* ── MODAL ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  backdrop-filter: blur(3px);
}
.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  width: 100%;
  max-width: 580px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 24px 60px rgba(0,0,0,.4);
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.modal-title { font-size: 17px; font-weight: 700; }
.modal-close-btn {
  background: none; border: none; color: var(--text-muted);
  font-size: 18px; cursor: pointer; padding: 4px 8px;
  border-radius: 6px; transition: background .15s, color .15s;
}
.modal-close-btn:hover { background: var(--surface2); color: var(--text); }

.modal-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.modal-footer {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

/* ── FORM ELEMENTS ── */
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-label { font-size: 13px; font-weight: 600; color: var(--text); }
.form-hint  { font-size: 11px; font-weight: 400; color: var(--text-muted); margin-left: 4px; }

.form-input, .form-textarea, .form-select {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 12px;
  color: var(--text);
  font-size: 13.5px;
  font-family: inherit;
  outline: none;
  transition: border-color .2s;
  width: 100%;
}
.form-input:focus, .form-textarea:focus, .form-select:focus { border-color: var(--accent); }
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-muted); }
.form-textarea { resize: vertical; min-height: 60px; }
.form-select { cursor: pointer; }
.form-select-sm { max-width: 200px; }

/* ── STEPS BUILDER ── */
.step-form-row {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.step-form-header {
  display: flex;
  align-items: center;
  gap: 4px;
}
.step-form-num {
  flex-shrink: 0;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step-form-remove {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 12px;
  cursor: pointer;
  font-family: inherit;
  padding: 2px 6px;
  border-radius: 4px;
  transition: color .15s, background .15s;
}
.step-form-remove:hover { color: var(--red); background: rgba(239,68,68,.08); }
.step-form-remove { margin-left: auto; }

.step-move-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 13px;
  cursor: pointer;
  padding: 1px 6px;
  border-radius: 4px;
  line-height: 1.4;
  transition: color .15s, background .15s;
}
.step-move-btn:hover { color: var(--text); background: var(--hover); }

.step-insert-btn {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 11px;
  cursor: pointer;
  font-family: inherit;
  padding: 2px 6px;
  border-radius: 4px;
  transition: background .15s;
}
.step-insert-btn:hover { background: var(--accent-dim); }

.step-form-command { font-family: var(--font-mono); font-size: 12.5px; }

.add-step-btn {
  width: 100%;
  padding: 9px;
  background: none;
  border: 1px dashed var(--border);
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  margin-top: 4px;
  transition: border-color .15s, color .15s, background .15s;
}
.add-step-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }

/* ── BUTTONS ── */
.btn-primary {
  padding: 9px 20px;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  color: #fff;
  font-size: 13.5px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: opacity .15s;
}
.btn-primary:hover { opacity: .85; }

.btn-secondary {
  padding: 9px 20px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 13.5px;
  font-family: inherit;
  cursor: pointer;
  transition: background .15s, color .15s;
}
.btn-secondary:hover { background: var(--border); color: var(--text); }

/* ── OVERLAY (mobile) ── */
.overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  z-index: 99;
}

.overlay.open { display: block; }

/* ── UTILITIES ── */
.hidden { display: none !important; }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-toggle { display: block; }

  .main { margin-left: 0; }

  .menu-btn { display: flex; }

  .topbar { padding: 12px 16px 0; }

  .content-area { padding: 20px 16px 40px; }

  .footer { padding: 20px 16px; }

  .footer-inner { flex-direction: column; align-items: flex-start; gap: 16px; }

  .footer-center { margin-left: 0; }

  .footer-right { align-items: flex-start; }
}