/* ================================================================
   Text Tool — Main Stylesheet
   Design: Clean editorial monospace-meets-minimal
   ================================================================ */

:root {
  --bg:         #f5f4f0;
  --bg2:        #eeecea;
  --surface:    #ffffff;
  --border:     #dddad4;
  --border2:    #e8e5df;
  --text:       #1a1814;
  --text-2:     #4a4740;
  --text-3:     #8a8580;
  --accent:     #2563eb;
  --accent-2:   #1d4ed8;
  --accent-pale:#dbeafe;
  --green:      #16a34a;
  --green-pale: #dcfce7;
  --red:        #dc2626;
  --mono:       'Space Mono', monospace;
  --display:    'Syne', sans-serif;
  --body:       'Inter', sans-serif;
  --radius:     8px;
  --radius-lg:  14px;
  --shadow:     0 1px 3px rgba(0,0,0,.08), 0 4px 12px rgba(0,0,0,.06);
  --shadow-lg:  0 4px 6px rgba(0,0,0,.07), 0 10px 30px rgba(0,0,0,.1);
  --header-h:   56px;
  --sidebar-w:  240px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--body);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── HEADER ── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  box-shadow: 0 1px 0 var(--border);
}

.header-inner {
  max-width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-icon {
  font-size: 20px;
  color: var(--accent);
}

.logo-text {
  font-family: var(--display);
  font-weight: 800;
  font-size: 17px;
  color: var(--text);
  letter-spacing: -0.3px;
}

.header-right {
  flex: 1;
  display: flex;
  justify-content: flex-end;
}

/* ── SEARCH ── */
.search-wrap {
  position: relative;
  width: 300px;
}

.search-wrap input {
  width: 100%;
  height: 36px;
  padding: 0 12px 0 36px;
  border: 1.5px solid var(--border);
  border-radius: 999px;
  font-family: var(--body);
  font-size: 13px;
  background: var(--bg);
  color: var(--text);
  outline: none;
  transition: border-color .15s;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%238a8580' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='m21 21-4.35-4.35'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: 12px center;
}

.search-wrap input:focus { border-color: var(--accent); background-color: var(--surface); }

.search-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0; right: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-height: 320px;
  overflow-y: auto;
  z-index: 200;
}

.search-item {
  display: block;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border2);
  cursor: pointer;
  text-decoration: none;
  color: var(--text);
  transition: background .1s;
}
.search-item:last-child { border-bottom: none; }
.search-item:hover { background: var(--bg); }
.search-item-name { font-weight: 600; font-size: 13px; }
.search-item-cat { font-size: 11px; color: var(--text-3); font-family: var(--mono); margin-top: 1px; }

/* ── LAYOUT ── */
.layout {
  display: flex;
  min-height: 100vh;
  padding-top: var(--header-h);
}

/* ── SIDEBAR ── */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  position: fixed;
  top: var(--header-h);
  left: 0;
  bottom: 0;
  overflow-y: auto;
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 16px 0 40px;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.sidebar-all {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  font-family: var(--display);
  font-weight: 700;
  font-size: 13px;
  color: var(--text);
  text-decoration: none;
  margin-bottom: 8px;
  border-radius: 0;
  transition: background .15s;
}
.sidebar-all:hover, .sidebar-all.active {
  background: var(--accent-pale);
  color: var(--accent);
  text-decoration: none;
}
.nav-icon { font-size: 16px; }

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

.nav-group-label {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px 4px;
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text-3);
}

.nav-tool {
  display: block;
  padding: 5px 16px 5px 28px;
  font-size: 13px;
  color: var(--text-2);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: all .12s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.nav-tool:hover {
  color: var(--accent);
  background: var(--accent-pale);
  text-decoration: none;
  border-left-color: var(--accent);
}
.nav-tool.active {
  color: var(--accent);
  background: var(--accent-pale);
  border-left-color: var(--accent);
  font-weight: 600;
}

/* ── MAIN CONTENT ── */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-w);
  min-height: calc(100vh - var(--header-h));
  padding: 32px;
  max-width: 900px;
}

/* ── HOME PAGE ── */
.home-hero {
  margin-bottom: 40px;
}

.home-hero h1 {
  font-family: var(--display);
  font-weight: 800;
  font-size: 36px;
  letter-spacing: -0.8px;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 10px;
}

.home-hero h1 span { color: var(--accent); }

.home-hero p {
  font-size: 16px;
  color: var(--text-2);
  max-width: 560px;
  line-height: 1.7;
}

.stats-bar {
  display: flex;
  gap: 24px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-num {
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
}

.stat-lbl {
  font-size: 12px;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: .5px;
}

/* ── CATEGORY SECTION ── */
.cat-section { margin-bottom: 36px; }

.cat-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1.5px solid var(--border);
}

.cat-icon { font-size: 18px; }

.cat-title {
  font-family: var(--display);
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
}

.tool-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  text-decoration: none;
  color: var(--text);
  transition: all .15s;
  cursor: pointer;
}

.tool-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-pale), var(--shadow);
  transform: translateY(-1px);
  text-decoration: none;
}

.tool-card-name {
  font-family: var(--display);
  font-weight: 700;
  font-size: 13px;
  color: var(--text);
  margin-bottom: 4px;
}

.tool-card-desc {
  font-size: 12px;
  color: var(--text-3);
  line-height: 1.5;
}

/* ── TOOL PAGE ── */
.tool-header {
  margin-bottom: 24px;
}

.tool-breadcrumb {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-3);
  margin-bottom: 8px;
}

.tool-breadcrumb a { color: var(--text-3); }
.tool-breadcrumb a:hover { color: var(--accent); }

.tool-title {
  font-family: var(--display);
  font-weight: 800;
  font-size: 26px;
  letter-spacing: -0.4px;
  color: var(--text);
  margin-bottom: 6px;
}

.tool-desc {
  font-size: 14px;
  color: var(--text-2);
}

/* ── TOOL EDITOR ── */
.editor-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

.editor-toolbar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 12px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.toolbar-sep {
  width: 1px;
  height: 18px;
  background: var(--border);
  margin: 0 4px;
}

.tb-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--text-2);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  transition: all .12s;
  white-space: nowrap;
}
.tb-btn:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
.tb-btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.tb-btn.primary:hover { background: var(--accent-2); }
.tb-btn.danger { background: #fff; color: var(--red); border-color: var(--red); }
.tb-btn.danger:hover { background: var(--red); color: #fff; }

/* ── OPTIONS ROW ── */
.options-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.opt-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: .5px;
  flex-shrink: 0;
}

.opt-select {
  font-family: var(--mono);
  font-size: 12px;
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  outline: none;
}
.opt-select:focus { border-color: var(--accent); }

.opt-checkbox { display: flex; align-items: center; gap: 6px; cursor: pointer; }
.opt-checkbox input { accent-color: var(--accent); width: 14px; height: 14px; cursor: pointer; }
.opt-checkbox span { font-size: 12px; color: var(--text-2); }

.opt-input {
  font-family: var(--mono);
  font-size: 12px;
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  outline: none;
  width: 120px;
}
.opt-input:focus { border-color: var(--accent); }

/* ── TEXTAREA ── */
.editor-textarea {
  width: 100%;
  min-height: 220px;
  padding: 14px 16px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text);
  background: var(--surface);
  border: none;
  outline: none;
  resize: vertical;
}

.editor-textarea::placeholder { color: var(--text-3); }

.editor-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 12px;
  background: var(--bg2);
  border-top: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-3);
}

/* ── ABOUT SECTION ── */
.about-section {
  margin-top: 32px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

.about-section h2 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 16px;
  margin-bottom: 10px;
}

.about-section h3 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 14px;
  margin: 18px 0 8px;
}

.about-section p { font-size: 14px; color: var(--text-2); margin-bottom: 10px; line-height: 1.7; }
.about-section ul { padding-left: 20px; color: var(--text-2); font-size: 14px; line-height: 1.8; }

/* ── NOTIFICATION ── */
.notif {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--text);
  color: #fff;
  padding: 10px 16px;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 12px;
  box-shadow: var(--shadow-lg);
  z-index: 999;
  opacity: 0;
  transform: translateY(8px);
  transition: all .2s;
  pointer-events: none;
}
.notif.show { opacity: 1; transform: translateY(0); }

/* ── FOOTER ── */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  margin-left: var(--sidebar-w);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 32px;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-brand {
  font-family: var(--display);
  font-weight: 800;
  font-size: 14px;
  color: var(--text-3);
}

.footer-nav { display: flex; gap: 20px; }
.footer-nav a { font-size: 13px; color: var(--text-3); }
.footer-nav a:hover { color: var(--accent); }

.footer-copy { font-size: 12px; color: var(--text-3); font-family: var(--mono); }

/* ── ADMIN ── */
.admin-wrap { max-width: 960px; margin: 40px auto; padding: 0 20px; }
.admin-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; margin-bottom: 24px; }
.admin-title { font-family: var(--display); font-weight: 800; font-size: 22px; margin-bottom: 20px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 12px; font-weight: 600; color: var(--text-2); margin-bottom: 5px; font-family: var(--mono); text-transform: uppercase; letter-spacing:.5px; }
.form-control { width: 100%; padding: 9px 12px; border: 1.5px solid var(--border); border-radius: var(--radius); font-size: 14px; background: var(--bg); color: var(--text); outline: none; transition: border-color .15s; }
.form-control:focus { border-color: var(--accent); background: var(--surface); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 9px 18px; border-radius: var(--radius); font-size: 13px; font-weight: 600; cursor: pointer; border: none; transition: all .15s; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-2); }
.btn-danger { background: var(--red); color: #fff; }
.admin-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.admin-table th { text-align: left; padding: 10px 12px; background: var(--bg2); border-bottom: 2px solid var(--border); font-family: var(--mono); font-size: 10px; text-transform: uppercase; color: var(--text-3); }
.admin-table td { padding: 10px 12px; border-bottom: 1px solid var(--border2); color: var(--text-2); }
.admin-table tr:hover td { background: var(--bg); }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; font-family: var(--mono); }
.badge-green { background: var(--green-pale); color: var(--green); }
.badge-red { background: #fee2e2; color: var(--red); }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  :root { --sidebar-w: 0px; }
  .sidebar { display: none; }
  .main-content { margin-left: 0; padding: 16px; }
  .site-footer { margin-left: 0; }
  .tools-grid { grid-template-columns: 1fr; }
  .home-hero h1 { font-size: 26px; }
  .search-wrap { width: 200px; }
  .form-row { grid-template-columns: 1fr; }
}

/* Tool tips bar */
.tool-tips-bar{display:flex;align-items:center;gap:10px;padding:10px 16px;background:var(--greenp);border:1px solid var(--greenm);border-radius:var(--r);margin-top:16px;flex-wrap:wrap;}
.tip-item{font-size:12px;color:var(--green2);}
.tip-sep{color:var(--greenm);font-size:12px;}

/* ================================================================
   UPGRADE CSS — Better UX, Mobile, Engagement, SEO
   ================================================================ */

/* ── HAMBURGER BUTTON ── */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}
.hamburger span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all .2s;
}

/* ── MOBILE SIDEBAR OVERLAY ── */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 89;
}
.sidebar-overlay.active { display: block; }

/* ── TOOL HEADER UPGRADES ── */
.tool-title-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}
.tool-title-row .tool-title { margin-bottom: 0; flex: 1; min-width: 0; }

.tool-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 11px;
  color: var(--text-2);
  font-family: var(--mono);
}

/* ── FAVORITES BUTTON ── */
.fav-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  font-family: var(--mono);
  color: var(--text-2);
  cursor: pointer;
  transition: all .15s;
  flex-shrink: 0;
  white-space: nowrap;
}
.fav-btn:hover { border-color: var(--red); color: var(--red); }
.fav-btn.active { border-color: var(--red); color: var(--red); background: #fff0f0; }

/* ── KEYBOARD HINT ── */
.kbd-hint {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-3);
  opacity: .7;
}

/* ── AUTO PASTE TOGGLE ── */
.auto-paste-toggle {
  font-size: 11px !important;
  opacity: .75;
}
.auto-paste-toggle:hover { opacity: 1; }

/* ── DIFF UPGRADE STYLES ── */
.diff-wrap { padding: 0; }
.diff-header-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
}
.diff-col-label {
  padding: 8px 14px;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-3);
}
.diff-col-label:first-child { border-right: 1px solid var(--border); }
.diff-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.diff-cols .editor-textarea {
  min-height: 260px;
  border-right: 1px solid var(--border);
}
.diff-cols .editor-textarea:last-child { border-right: none; }
.diff-toolbar {
  padding: 10px 14px;
  background: var(--bg2);
  border-top: 1px solid var(--border);
  display: flex;
  gap: 8px;
}
.diff-output {
  margin-top: 16px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.8;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  overflow-x: auto;
}
.diff-summary {
  font-size: 11px;
  color: var(--text-3);
  margin-bottom: 10px;
  font-family: var(--mono);
}
.diff-line { padding: 1px 4px; border-radius: 3px; }
.diff-rem { background: #fee2e2; color: #dc2626; text-decoration: line-through; }
.diff-add { background: #dcfce7; color: #16a34a; }

/* ── TOOL SECTION BLOCKS ── */
.tool-section {
  margin-top: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  box-shadow: 0 1px 3px rgba(0,0,0,.06);
}

.section-title {
  font-family: var(--display);
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border2);
}

/* ── USE CASES ── */
.use-cases-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 10px;
}
.use-cases-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.5;
  padding: 10px 14px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border2);
}

/* ── FAQ ACCORDION ── */
.faq-list { display: flex; flex-direction: column; gap: 6px; }

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .15s;
}
.faq-item.open { border-color: var(--accent); }

.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 13px 16px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  font-family: var(--body);
  transition: background .12s;
}
.faq-q:hover { background: var(--bg); }
.faq-item.open .faq-q { background: var(--accent-pale); color: var(--accent); }

.faq-arrow {
  font-size: 10px;
  color: var(--text-3);
  transition: transform .2s;
  flex-shrink: 0;
}
.faq-item.open .faq-arrow { transform: rotate(180deg); color: var(--accent); }

.faq-a {
  display: none;
  padding: 0 16px 14px;
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.75;
  border-top: 1px solid var(--border2);
}
.faq-item.open .faq-a { display: block; }

/* ── RELATED TOOLS GRID ── */
.related-tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}
.related-tool-card {
  display: block;
  padding: 14px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all .15s;
  color: var(--text);
}
.related-tool-card:hover {
  border-color: var(--accent);
  background: var(--accent-pale);
  transform: translateY(-1px);
  text-decoration: none;
}
.related-tool-name {
  font-family: var(--display);
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 4px;
  color: var(--text);
}
.related-tool-card:hover .related-tool-name { color: var(--accent); }
.related-tool-desc {
  font-size: 12px;
  color: var(--text-3);
  line-height: 1.5;
}

/* ── RECENTLY USED (sidebar) ── */
#recent-nav-links a {
  display: block;
  padding: 5px 16px 5px 28px;
  font-size: 12px;
  color: var(--text-3);
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
#recent-nav-links a:hover { color: var(--accent); background: var(--accent-pale); }

/* ── BACK TO TOP ── */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 72px;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  font-size: 15px;
  cursor: pointer;
  opacity: 0;
  transform: translateY(8px);
  transition: all .2s;
  pointer-events: none;
  color: var(--text-2);
  z-index: 90;
}
.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.back-to-top:hover { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ── FOOTER UPGRADES ── */
.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.footer-tagline {
  font-size: 11px;
  color: var(--text-3);
  font-family: var(--mono);
}

/* ── MOBILE RESPONSIVE UPGRADES ── */
@media (max-width: 768px) {
  .hamburger { display: flex; }

  .sidebar {
    display: block !important;
    transform: translateX(-100%);
    transition: transform .25s ease;
    z-index: 90;
    width: 260px;
  }
  .sidebar.open { transform: translateX(0); }

  .tool-tips-bar { gap: 6px; }
  .tip-sep { display: none; }

  .diff-cols { grid-template-columns: 1fr; }
  .diff-header-row { grid-template-columns: 1fr; }
  .diff-col-label:first-child { border-right: none; border-bottom: 1px solid var(--border); }

  .use-cases-list { grid-template-columns: 1fr; }
  .related-tools-grid { grid-template-columns: 1fr 1fr; }

  .tool-section { padding: 18px; }
  .back-to-top { bottom: 16px; right: 16px; }

  .editor-toolbar { gap: 6px; }
  .auto-paste-toggle { display: none; }

  .tool-title { font-size: 22px; }
  .tool-badges { gap: 6px; }
  .badge-pill { font-size: 10px; padding: 3px 8px; }
}

@media (max-width: 480px) {
  .related-tools-grid { grid-template-columns: 1fr; }
  .faq-q { font-size: 13px; }
  .header-inner { gap: 10px; }
}

/* TOOL ARTICLE */
.tool-article{background:var(--white,#fff);border:1px solid var(--border,#e0e8e0);border-radius:16px;padding:28px 32px;margin-top:20px;box-shadow:0 1px 3px rgba(0,0,0,.06);line-height:1.8;}
.tool-article h2{font-family:var(--fd,'Fraunces',Georgia,serif);font-weight:600;font-size:20px;color:var(--text,#111);margin:0 0 14px;padding-bottom:12px;border-bottom:1px solid var(--border2,#edf4ed);}
.tool-article h3{font-family:var(--fd,'Fraunces',Georgia,serif);font-weight:600;font-size:16px;color:var(--text,#111);margin:22px 0 10px;}
.tool-article h4{font-size:13.5px;font-weight:600;color:var(--text2,#374d37);margin:14px 0 6px;text-transform:uppercase;letter-spacing:.5px;}
.tool-article p{font-size:14.5px;color:var(--text2,#374d37);line-height:1.85;margin-bottom:12px;}
.tool-article ul,.tool-article ol{padding-left:22px;margin-bottom:14px;}
.tool-article li{font-size:14.5px;color:var(--text2,#374d37);line-height:1.8;margin-bottom:5px;}
.tool-article strong{color:var(--text,#111);font-weight:600;}
.tool-article code{font-family:var(--fm,'JetBrains Mono',monospace);font-size:12.5px;background:var(--bg2,#eef3ee);padding:2px 7px;border-radius:4px;color:var(--green2,#155e30);}
.tool-article a{color:var(--green,#1a7a3c);text-decoration:underline;}
/* EXAMPLE BLOCKS */
.example-block{background:#0f172a;border-radius:10px;overflow:hidden;margin:14px 0;}
.example-block-label{padding:7px 14px;font-family:var(--fm,'JetBrains Mono',monospace);font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:1.2px;color:#64748b;border-bottom:1px solid #1e293b;}
.example-block pre{margin:0;padding:14px 16px;font-family:var(--fm,'JetBrains Mono',monospace);font-size:13px;line-height:1.7;color:#e2e8f0;white-space:pre-wrap;word-break:break-word;}
.example-block.output .example-block-label{color:#4ade80;}
.example-block.input  .example-block-label{color:#93c5fd;}
/* USE CASES GRID */
.use-cases-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:10px;list-style:none;padding:0;margin:0;}
.use-cases-list li{background:var(--bg,#f7f9f7);border:1px solid var(--border,#e0e8e0);border-radius:10px;padding:11px 14px;font-size:13.5px;color:var(--text2,#374d37);display:flex;align-items:flex-start;gap:8px;}
.use-cases-list li::before{content:"✓";color:var(--green,#1a7a3c);font-weight:700;flex-shrink:0;margin-top:1px;}
/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:8px;}
.faq-item{border:1px solid var(--border,#e0e8e0);border-radius:10px;overflow:hidden;}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;background:var(--bg,#f7f9f7);border:none;cursor:pointer;font-family:var(--fb,'DM Sans',sans-serif);font-size:14px;font-weight:600;color:var(--text,#111);text-align:left;transition:background .15s;}
.faq-q:hover{background:var(--greenp,#f0faf4);}
.faq-q.open{background:var(--greenp2,#dcfce7);color:var(--green2,#155e30);}
.faq-arrow{font-size:11px;flex-shrink:0;transition:transform .2s;}
.faq-q.open .faq-arrow{transform:rotate(180deg);}
.faq-a{display:none;padding:14px 16px;font-size:14px;color:var(--text2,#374d37);line-height:1.75;border-top:1px solid var(--border2,#edf4ed);background:white;}
.faq-a.show{display:block;}
/* RELATED TOOLS */
.related-tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px;}
.related-tool-card{display:block;background:var(--white,#fff);border:1px solid var(--border,#e0e8e0);border-radius:12px;padding:14px 16px;text-decoration:none;transition:all .15s;}
.related-tool-card:hover{border-color:var(--green,#1a7a3c);box-shadow:0 0 0 3px rgba(26,122,60,.1);transform:translateY(-1px);}
.related-tool-name{font-weight:600;font-size:13.5px;color:var(--text,#111);margin-bottom:4px;}
.related-tool-desc{font-size:12px;color:var(--text3,#6b846b);line-height:1.5;}
/* SECTION */
.section-title{font-family:var(--fd,'Fraunces',Georgia,serif);font-weight:600;font-size:18px;color:var(--text,#111);margin-bottom:16px;letter-spacing:-.2px;}
.tool-section{background:var(--white,#fff);border:1px solid var(--border,#e0e8e0);border-radius:16px;padding:24px 28px;margin-top:16px;}