/* DataDevKIT — v3.1 */
/* Clean, minimal, developer-focused. No gradients, no glassmorphism. */

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

:root {
  --bg: #ffffff;
  --surface: #F8FAFC;
  --text: #0F172A;
  --text-secondary: #334155;
  --muted: #64748B;
  --dim: #94A3B8;
  --border: #E2E8F0;
  --border-hover: #3B82F6;
  --accent: #3B82F6;
  --accent-bg: #EFF6FF;
  --accent-dark: #2563EB;
  --green: #16A34A;
  --green-bg: #F0FDF4;
  --red: #DC2626;
  --orange: #EA580C;
  --yellow: #CA8A04;
  --purple: #7C3AED;
  --radius: 8px;
  --radius-sm: 6px;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --mono: 'JetBrains Mono', 'Fira Code', monospace;
  --max-w: 1080px;
  --header-h: 56px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  font-size: 15px;
}

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

/* ── Header ─────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 50;
  height: var(--header-h);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex; align-items: center;
  justify-content: space-between; height: 100%;
}
.logo {
  display: flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: 1rem; color: var(--text);
  text-decoration: none;
}
.logo-icon {
  width: 26px; height: 26px; background: var(--accent);
  border-radius: 5px; display: grid; place-items: center;
  font-size: .65rem; color: #fff; font-weight: 800;
  font-family: var(--mono);
}
.logo span { color: var(--dim); font-weight: 400; font-size: .72rem; }
.nav-links {
  display: flex; gap: 24px; list-style: none; align-items: center;
}
.nav-links a {
  color: var(--muted); font-size: .85rem; font-weight: 500;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-toggle {
  display: none; background: none; border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 4px 8px;
  color: var(--text); font-size: 1rem; cursor: pointer;
}

/* ── Container ──────────────────────────── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 20px; }

/* ── Hero ────────────────────────────────── */
.hero {
  padding: 72px 0 56px; text-align: center; background: var(--bg);
}
.hero h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 800; line-height: 1.2; letter-spacing: -.025em;
  margin-bottom: 14px; color: var(--text);
}
.hero .highlight { color: var(--accent); }
.hero .subtitle {
  font-size: clamp(.88rem, 1.2vw, .98rem);
  color: var(--muted); max-width: 540px;
  margin: 0 auto 28px; line-height: 1.7;
}
.hero .cta-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 24px; background: var(--accent); color: #fff;
  border: none; border-radius: var(--radius-sm); font-size: .88rem;
  font-weight: 600; cursor: pointer; font-family: var(--font);
  transition: background .15s;
}
.hero .cta-btn:hover { background: var(--accent-dark); color: #fff; }
.hero .privacy-note {
  margin-top: 16px; font-size: .78rem; color: var(--dim);
}

/* ── Section ─────────────────────────────── */
.section-label {
  font-size: .72rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: .08em; color: var(--accent); margin-bottom: 6px;
}
.section-header { text-align: center; margin-bottom: 32px; }
.section-header h2 {
  font-size: 1.3rem; font-weight: 700; letter-spacing: -.01em;
  margin-bottom: 4px;
}
.section-header p { color: var(--muted); font-size: .88rem; }

/* ── Tool Cards ──────────────────────────── */
.tools-section { padding: 48px 0 56px; background: var(--surface); }
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
}
.tool-card {
  display: flex; flex-direction: column;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px 16px 14px;
  text-decoration: none; color: var(--text);
  transition: transform .15s, border-color .15s;
}
.tool-card:hover {
  transform: translateY(-2px); border-color: var(--border-hover);
}
.tool-card-header {
  display: flex; align-items: center;
  justify-content: space-between; margin-bottom: 8px;
}
.tool-card-icon {
  font-family: var(--mono); font-size: .65rem; font-weight: 600;
  color: var(--accent); background: var(--accent-bg);
  padding: 3px 8px; border-radius: 4px;
  white-space: nowrap; letter-spacing: .01em;
}
.tool-card-badge {
  font-size: .6rem; font-weight: 600; padding: 2px 7px;
  border-radius: 999px; color: #fff; text-transform: uppercase;
  letter-spacing: .03em;
}
.tool-card h3 { font-size: .88rem; font-weight: 650; margin-bottom: 4px; line-height: 1.3; }
.tool-card p {
  color: var(--muted); font-size: .78rem; line-height: 1.5; flex: 1;
}
.tool-card-tags {
  display: flex; flex-wrap: wrap; gap: 4px; margin-top: 10px;
}
.tool-card-tags span {
  font-size: .65rem; color: var(--dim); background: var(--surface);
  border: 1px solid var(--border); padding: 1px 7px;
  border-radius: 999px; font-family: var(--mono);
}
.tool-card-cta {
  display: inline-flex; align-items: center; gap: 4px;
  margin-top: 10px; font-size: .78rem; font-weight: 600; color: var(--accent);
}
.tool-card-cta svg { transition: transform .12s; }
.tool-card:hover .tool-card-cta svg { transform: translateX(3px); }

/* ── Code Section ────────────────────────── */
.code-section {
  padding: 56px 0; background: var(--bg);
}
.code-block {
  background: #0F172A; color: #E2E8F0; border-radius: var(--radius);
  padding: 28px 24px; font-family: var(--mono); font-size: .82rem;
  line-height: 1.65; overflow-x: auto; position: relative;
}
.code-block .code-label {
  position: absolute; top: 10px; right: 14px;
  font-size: .65rem; color: #475569; font-weight: 600;
  text-transform: uppercase; letter-spacing: .05em;
}
.code-block .kw { color: #93C5FD; }
.code-block .fn { color: #7DD3FC; }
.code-block .str { color: #86EFAC; }
.code-block .cm { color: #475569; font-style: italic; }
.code-block .num { color: #FDE68A; }
.code-block .op { color: #CBD5E1; }

/* ── Features ────────────────────────────── */
.features-section { padding: 48px 0 56px; background: var(--surface); border-top: 1px solid var(--border); }
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}
.feature-card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px; text-align: left;
}
.feature-card .icon {
  width: 36px; height: 36px; background: var(--accent-bg);
  border-radius: 8px; display: grid; place-items: center;
  font-size: 1rem; margin-bottom: 10px;
}
.feature-card h3 { font-size: .88rem; font-weight: 650; margin-bottom: 4px; }
.feature-card p { color: var(--muted); font-size: .78rem; line-height: 1.55; }

/* ── FAQ ──────────────────────────────────── */
.faq-section { padding: 48px 0; background: var(--bg); }
.faq-list { max-width: 640px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--border); overflow: hidden;
}
.faq-question {
  width: 100%; background: none; border: none; color: var(--text);
  padding: 14px 0; font-size: .88rem; font-weight: 600;
  text-align: left; cursor: pointer; font-family: var(--font);
  display: flex; justify-content: space-between; align-items: center;
}
.faq-question:hover { color: var(--accent); }
.faq-question .chevron {
  font-size: .65rem; color: var(--dim); transition: transform .2s;
}
.faq-item.open .faq-question .chevron { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .25s ease; }
.faq-item.open .faq-answer { max-height: 160px; padding-bottom: 14px; }
.faq-answer p { color: var(--muted); font-size: .85rem; line-height: 1.65; }

/* ── Blog ─────────────────────────────────── */
.blog-section { padding: 48px 0; }
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 18px;
}
.blog-card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  text-decoration: none; color: var(--text);
  transition: transform .15s, border-color .15s;
  display: flex; flex-direction: column;
}
.blog-card:hover { transform: translateY(-2px); border-color: var(--border-hover); }
.blog-card-img {
  height: 140px; background: var(--surface);
  display: grid; place-items: center; font-size: 2rem;
  border-bottom: 1px solid var(--border);
}
.blog-card-body { padding: 18px; flex: 1; display: flex; flex-direction: column; }
.blog-card-meta {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 8px; font-size: .72rem; color: var(--dim);
}
.blog-card-meta .tag {
  background: var(--accent-bg); color: var(--accent);
  padding: 1px 7px; border-radius: 999px; font-weight: 600;
}
.blog-card h3 { font-size: .9rem; font-weight: 650; margin-bottom: 6px; line-height: 1.35; }
.blog-card p { color: var(--muted); font-size: .8rem; line-height: 1.55; flex: 1; }
.blog-card .read-more {
  margin-top: 10px; font-size: .78rem; font-weight: 600; color: var(--accent);
}

/* ── Tool Page ────────────────────────────── */
.tool-page { background: var(--surface); }
.tool-page-header { margin-bottom: 20px; }
.breadcrumb {
  display: flex; align-items: center; gap: 6px;
  font-size: .78rem; color: var(--dim); margin: 16px 0 14px;
}
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--accent); }
.tool-page-header h1 {
  font-size: clamp(1.2rem, 2.5vw, 1.55rem);
  font-weight: 800; margin-bottom: 4px; letter-spacing: -.01em;
}
.tool-page-header p {
  color: var(--muted); font-size: .88rem; max-width: 520px; line-height: 1.6;
}
.tool-workspace {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px;
}

/* ── Workspace Components ─────────────────── */
.workspace-split { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.workspace-panel { display: flex; flex-direction: column; min-width: 0; }
.panel-label {
  font-size: .72rem; font-weight: 600; color: var(--muted);
  text-transform: uppercase; letter-spacing: .04em;
  margin-bottom: 6px; display: flex;
  align-items: center; justify-content: space-between;
}
.panel-actions { display: flex; gap: 5px; }

.btn {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 6px 12px; border-radius: var(--radius-sm);
  font-size: .78rem; font-weight: 500;
  border: 1px solid var(--border); background: var(--bg);
  color: var(--text-secondary); cursor: pointer;
  font-family: var(--font); white-space: nowrap;
  transition: border-color .12s;
}
.btn:hover { border-color: var(--dim); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); }
.btn-sm { padding: 4px 9px; font-size: .75rem; }

textarea.code-input, .code-output {
  width: 100%; min-height: 200px; max-height: 400px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px;
  color: var(--text); font-family: var(--mono);
  font-size: .8rem; line-height: 1.5; resize: vertical; outline: none;
}
textarea.code-input:focus { border-color: var(--accent); }
textarea.code-input::placeholder { color: var(--dim); }
.code-output { overflow: auto; white-space: pre-wrap; word-break: break-word; max-height: 400px; }

.toolbar {
  display: flex; flex-wrap: wrap; gap: 7px; align-items: center;
  margin-bottom: 14px; padding: 10px 12px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.toolbar label {
  font-size: .78rem; color: var(--muted);
  display: flex; align-items: center; gap: 4px;
}
.toolbar select, .toolbar input[type="text"] {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 4px; color: var(--text); padding: 4px 8px;
  font-size: .78rem; font-family: var(--font); outline: none;
}
.toolbar select:focus, .toolbar input[type="text"]:focus { border-color: var(--accent); }
.status-bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 7px 12px; margin-top: 10px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); font-size: .72rem; color: var(--dim);
}

/* ── Profiler ─────────────────────────────── */
.profiler-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 10px; margin-bottom: 20px;
}
.stat-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px 14px; text-align: center;
}
.stat-card .stat-value { font-size: 1.3rem; font-weight: 800; font-family: var(--mono); }
.stat-card .stat-label { font-size: .68rem; color: var(--dim); text-transform: uppercase; letter-spacing: .04em; font-weight: 600; }
.column-profile { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 12px; overflow: hidden; }
.column-profile-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px; background: var(--surface); border-bottom: 1px solid var(--border); cursor: pointer;
}
.column-profile-header h4 { font-size: .84rem; font-weight: 700; display: flex; align-items: center; gap: 6px; }
.column-profile-header .col-type { font-size: .65rem; font-weight: 600; color: var(--accent); background: var(--accent-bg); padding: 1px 7px; border-radius: 999px; font-family: var(--mono); }
.column-profile-body { padding: 14px; }
.col-stat { padding: 6px 8px; background: var(--surface); border-radius: var(--radius-sm); }
.col-stat .col-stat-val { font-size: .84rem; font-weight: 700; font-family: var(--mono); }
.col-stat .col-stat-lbl { font-size: .64rem; color: var(--dim); text-transform: uppercase; letter-spacing: .03em; }
.quality-bar { height: 5px; background: var(--border); border-radius: 3px; overflow: hidden; margin-top: 6px; }
.quality-bar-fill { height: 100%; border-radius: 3px; }
.bar-good { background: var(--green); }
.bar-warn { background: var(--yellow); }
.bar-bad { background: var(--red); }
.freq-bar { display: flex; align-items: center; gap: 6px; margin: 2px 0; font-size: .75rem; }
.freq-bar-track { flex: 1; height: 6px; background: var(--surface); border-radius: 3px; overflow: hidden; }
.freq-bar-fill { height: 100%; background: var(--accent); border-radius: 3px; }
.freq-bar-label { min-width: 70px; font-family: var(--mono); font-size: .72rem; color: var(--text-secondary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.freq-bar-pct { min-width: 36px; text-align: right; font-family: var(--mono); font-size: .68rem; color: var(--dim); }

/* ── Tables ───────────────────────────────── */
.data-table { width: 100%; border-collapse: collapse; font-size: .78rem; }
.data-table th {
  background: var(--surface); border: 1px solid var(--border);
  padding: 5px 8px; text-align: left; font-weight: 600;
  font-size: .72rem; color: var(--muted); text-transform: uppercase;
  letter-spacing: .03em; white-space: nowrap; position: sticky; top: 0; z-index: 1;
}
.data-table td { border: 1px solid var(--border); padding: 4px 8px; white-space: nowrap; color: var(--text-secondary); }
.data-table tr:hover td { background: var(--surface); }
.table-scroll { overflow: auto; max-height: 340px; border: 1px solid var(--border); border-radius: var(--radius-sm); }

/* ── Blog Post Page ───────────────────────── */
.blog-post { padding: 40px 0 60px; }
.blog-post-header { margin-bottom: 28px; }
.blog-post-header h1 { font-size: clamp(1.4rem, 3vw, 1.8rem); font-weight: 800; line-height: 1.25; letter-spacing: -.02em; margin-bottom: 10px; }
.blog-post-meta { display: flex; align-items: center; gap: 12px; font-size: .82rem; color: var(--muted); flex-wrap: wrap; }
.blog-post-meta .tag { background: var(--accent-bg); color: var(--accent); padding: 2px 10px; border-radius: 999px; font-weight: 600; font-size: .75rem; }
/*.blog-post-body { max-width: 680px; }*/
.blog-post-body h2 { font-size: 1.15rem; font-weight: 700; margin: 28px 0 10px; letter-spacing: -.01em; }
.blog-post-body h3 { font-size: 1rem; font-weight: 650; margin: 22px 0 8px; }
.blog-post-body p { color: var(--text-secondary); font-size: .9rem; line-height: 1.75; margin-bottom: 14px; }
.blog-post-body ul, .blog-post-body ol { color: var(--text-secondary); font-size: .9rem; line-height: 1.75; margin: 0 0 14px 20px; }
.blog-post-body pre { background: #0F172A; color: #E2E8F0; border-radius: var(--radius); padding: 18px; font-family: var(--mono); font-size: .8rem; line-height: 1.6; overflow-x: auto; margin: 16px 0; }
.blog-post-body code { font-family: var(--mono); font-size: .84rem; background: var(--surface); padding: 1px 5px; border-radius: 3px; }
.blog-post-body pre code { background: none; padding: 0; }
.blog-post-body blockquote { border-left: 3px solid var(--accent); padding: 10px 16px; margin: 16px 0; background: var(--accent-bg); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.blog-post-body blockquote p { color: var(--text); margin: 0; }

/* ── Footer ───────────────────────────────── */
.site-footer { border-top: 1px solid var(--border); padding: 28px 0; }
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 10px;
}
.footer-inner p { font-size: .78rem; color: var(--dim); }
.footer-links { display: flex; gap: 14px; list-style: none; }
.footer-links a { color: var(--dim); font-size: .78rem; }
.footer-links a:hover { color: var(--text); }
.footer-badge { font-size: .72rem; color: var(--green); font-weight: 600; display: flex; align-items: center; gap: 4px; }

/* ── Responsive ───────────────────────────── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: absolute; top: var(--header-h); left: 0; right: 0;
    background: var(--bg); border-bottom: 1px solid var(--border);
    padding: 14px 20px; gap: 10px;
  }
  .nav-toggle { display: block; }
  .tools-grid { grid-template-columns: 1fr 1fr; }
  .workspace-split { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: 1fr; }
  .hero { padding: 48px 0 36px; }
  .footer-inner { flex-direction: column; text-align: center; }
  .profiler-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .tools-grid { grid-template-columns: 1fr; }
  .container { padding: 0 14px; }
}

/* Rectangular container with hairline border */
.site-header .logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  /*border: 1px solid #e2e8f0;*/
  /*border-radius: 6px;*/
  background-color: #ffffff;
  text-decoration: none;
  transition: border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

/* Logo image sizing */
.site-header .logo-img {
  height: 36px;
  width: auto;
  display: block;
}

/* Title using your custom font styling */
.site-header .logo-title {
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 500;
  line-height: 1;
  transition: color 0.2s ease;
}

/* Hover effect: Title turns blue, container border updates */
.site-header .logo:hover {
  border-color: #2563eb;
  box-shadow: 0 1px 3px rgba(37, 99, 235, 0.1);
}

.site-header .logo:hover .logo-title {
  color: #2563eb; /* Changes to blue on hover */
}