/* Everyday Toolbox — shared stylesheet
   Pure static site: no frameworks, no CDNs, system font stack only. */

:root {
  --bg: #f6f8fc;
  --card: #ffffff;
  --ink: #0f172a;
  --muted: #64748b;
  --brand: #4f46e5;
  --brand-dark: #4338ca;
  --border: #e2e8f0;
  --radius: 12px;
}

* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  margin: 0;
  line-height: 1.6;
}

/* ---------- layout ---------- */
.container {
  max-width: 1080px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* ---------- header ---------- */
.site-header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--brand);
  text-decoration: none;
}

.logo:hover {
  color: var(--brand-dark);
}

.nav a {
  color: var(--muted);
  font-weight: 600;
  text-decoration: none;
  margin-left: 24px;
}

.nav a:hover {
  color: var(--brand);
}

/* ---------- hero ---------- */
.hero {
  text-align: center;
  padding: 64px 20px 48px;
}

.hero h1 {
  font-size: 2.5rem;
  margin: 0 0 12px;
  line-height: 1.2;
}

.hero p {
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 640px;
  margin: 0 auto 32px;
}

.search-wrap {
  max-width: 560px;
  margin: 0 auto;
}

.search-box {
  width: 100%;
  padding: 14px 22px;
  font-size: 1.05rem;
  border: 2px solid var(--border);
  border-radius: 999px;
  background: var(--card);
  color: var(--ink);
  outline: none;
}

.search-box:focus {
  border-color: var(--brand);
}

#no-results {
  display: none;
  color: var(--muted);
  text-align: center;
  padding: 24px 0;
}

/* ---------- tool listing ---------- */
.category {
  margin: 40px 0;
}

.category h2 {
  font-size: 1.5rem;
  margin: 0 0 16px;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.tool-card {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-decoration: none;
  color: var(--ink);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.tool-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.10);
}

.tool-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 8px;
}

.tool-card h3 {
  margin: 0 0 6px;
  font-size: 1.1rem;
}

.tool-card p {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0;
}

/* ---------- tool pages ---------- */
.tool-intro {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0 0 24px;
}

.tool-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin: 24px 0;
}

.form-row {
  margin: 0 0 16px;
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
}

textarea,
input[type="text"],
input[type="number"],
select {
  width: 100%;
  padding: 10px 12px;
  font-size: 1rem;
  font-family: inherit;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
}

textarea {
  min-height: 160px;
  resize: vertical;
}

textarea:focus,
input[type="text"]:focus,
input[type="number"]:focus,
select:focus {
  outline: none;
  border-color: var(--brand);
}

input[type="range"] {
  width: 100%;
}

.check-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.check-row label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 0;
  font-weight: 500;
  cursor: pointer;
}

.btn {
  display: inline-block;
  padding: 10px 18px;
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  cursor: pointer;
}

.btn:hover {
  border-color: var(--brand);
  color: var(--brand);
}

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

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

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0;
}

.result-box {
  background: #f8fafc;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 16px;
  word-break: break-word;
  margin-top: 16px;
}

pre.output {
  margin: 0;
  white-space: pre-wrap;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9rem;
}

/* ---------- stats / meters ---------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
  margin: 16px 0;
}

.stat {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 10px;
  text-align: center;
}

.stat .num {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--brand);
}

.stat .lbl {
  font-size: 0.8rem;
  color: var(--muted);
}

.meter {
  height: 10px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
  margin: 8px 0;
}

.meter > div {
  height: 100%;
  width: 0;
  background: var(--brand);
  border-radius: 999px;
  transition: width 0.3s ease;
}

.error-msg {
  color: #dc2626;
  font-weight: 600;
}

/* ---------- content extras ---------- */
.faq {
  margin: 32px 0;
}

.faq h3 {
  font-size: 1.1rem;
  margin: 20px 0 6px;
}

.faq p {
  color: var(--muted);
  margin: 0 0 12px;
}

.related {
  margin: 32px 0;
}

.related ul {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.related a {
  display: inline-block;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 16px;
  text-decoration: none;
  color: var(--ink);
  background: var(--card);
}

.related a:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.kw-list {
  margin: 16px 0;
  padding-left: 20px;
  color: var(--muted);
}

/* ---------- qr canvas / image compare ---------- */
canvas.qr-canvas {
  display: block;
  margin: 16px auto;
  border: 8px solid #fff;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.12);
}

.img-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 16px 0;
}

.img-compare img {
  max-width: 100%;
  border-radius: var(--radius);
  display: block;
}

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  text-align: center;
  padding: 32px 20px;
  margin-top: 48px;
  background: var(--card);
}

.site-footer a {
  color: var(--muted);
  text-decoration: none;
  margin: 0 6px;
}

.site-footer a:hover {
  color: var(--brand);
}

.tiny {
  font-size: 0.85rem;
}

/* ---------- responsive ---------- */
@media (max-width: 640px) {
  .hero {
    padding: 40px 20px 32px;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .nav a {
    margin-left: 12px;
    font-size: 0.9rem;
  }

  .img-compare {
    grid-template-columns: 1fr;
  }
}