/* ===============================
   Base & Reset
================================ */

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #f9f9f9;
  color: #333;
}

/* ===============================
   Theme (Woodworking Training)
================================ */

:root {
  --accent: #0f766e;        /* forest teal */
  --accent-soft: #ecfdf5;   /* subtle hover / table bg */
}

/* ===============================
   Layout
================================ */

.container {
  max-width: 520px;
  margin: 40px auto;
  padding: 0 20px;
}

/* Reduce space between header and main content */
main.container {
  margin-top: 20px;
}

/* ===============================
   Header (Ad-safe)
================================ */

.site-header {
  background: transparent;
  border-bottom: none;
  margin: 0;
  padding: 8px 0;
}

/* Reserved space for future ads */
.header-ad-slot {
  min-height: 0;         /* No ad yet */
  width: 100%;
}

/* Header inner */
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-nav a {
  font-weight: 500;
  text-decoration: none;
  color: var(--accent);
}

/* Logo */
.site-header img {
  height: 38px;
  width: auto;
}

.site-nav a {
  font-weight: 500;
  text-decoration: none;
  color: var(--accent);
}

.site-nav a:hover {
  text-decoration: underline;
}

/* ===============================
   Header spacing fix
================================ */

.site-header .container {
  margin: 0 auto;
  padding: 0;
}

/* ===============================
   Typography
================================ */

h1 {
  text-align: center;
  font-size: 2rem;
  color: var(--accent);
  margin-bottom: 10px;
}

h2 {
  color: var(--accent);
  margin-top: 40px;
  margin-bottom: 15px;
}

h3 {
  color: var(--accent);
  margin-top: 30px;
}

p {
  font-size: 1rem;
  line-height: 1.6;
  margin: 10px 0;
}

.hint {
  margin-top: 8px;
  font-size: 0.85rem;
  color: #777;
  text-align: center;
  font-style: italic;
}

.intro {
  text-align: center;
  margin-bottom: 30px;
  color: #555;
}

/* ===============================
   Forms & Inputs
================================ */

label {
  display: block;
  margin-bottom: 20px;
  font-weight: 600;
}

input[type="number"],
input[type="date"] {
  width: 100%;
  margin-top: 6px;
  padding: 12px;
  font-size: 1rem;
  border: 1px solid #ccc;
  border-radius: 8px;
  background: #fff;
}

input:focus {
  outline: none;
  border-color: var(--accent);
}

/* ===============================
   Select (Dropdowns)
================================ */

select {
  width: 100%;
  margin-top: 6px;
  padding: 12px 40px 12px 12px;
  font-size: 1rem;
  font-family: inherit;
  color: #333;
  background-color: #fff;
  border: 1px solid #ccc;
  border-radius: 8px;

  /* Remove default OS styling */
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;

  /* Custom dropdown arrow */
  background-image:
    linear-gradient(45deg, transparent 50%, #555 50%),
    linear-gradient(135deg, #555 50%, transparent 50%);
  background-position:
    calc(100% - 22px) calc(50% - 3px),
    calc(100% - 16px) calc(50% - 3px);
  background-size:
    6px 6px,
    6px 6px;
  background-repeat: no-repeat;
}

select:focus {
  outline: none;
  border-color: var(--accent);
}

/* Disabled state */
select:disabled {
  background-color: #f3f4f6;
  color: #9ca3af;
  cursor: not-allowed;
}

/* Ensure label spacing consistency */
label select {
  margin-top: 6px;
}

/* ===============================
   Hub & Cross-Navigation Links
================================ */

.hub-link {
  margin: 18px 0 28px;
  font-size: 0.95rem;
  color: #555;
  text-align: center;
}

.hub-link a {
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
}

.hub-link a:hover {
  text-decoration: underline;
}

/* ===============================
   Results Box
================================ */

.result {
  margin-top: 25px;
  padding: 20px;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.05);
  font-size: 1.05rem;
}

.result p {
  margin: 8px 0;
}

/* ===============================
   Tool List (Homepage)
================================ */

.tools {
  margin-top: 40px;
}

.tool-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.tool-list li {
  background: #fff;
  border-radius: 10px;
  margin-bottom: 15px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.05);
}

.tool-list a {
  display: block;
  padding: 16px;
  color: inherit;
  text-decoration: none;
}

.tool-list a:hover {
  background: var(--accent-soft);
}

/* ===============================
   Footer
================================ */

.site-footer {
  background: transparent;
  border-top: none;
  margin-top: 40px;
}

.site-footer .container {
  text-align: center;
  padding: 10px 0;
}

.footer-links {
  font-size: 0.8rem;
  color: #888;
  margin-bottom: 6px;
  line-height: 1.5;
}

.footer-links a {
  color: #777;
  text-decoration: none;
}

.footer-links a:hover {
  text-decoration: underline;
}

.footer-copy {
  font-size: 0.75rem;
  color: #999;
  margin: 0;
}

/* ===============================
   Mobile
================================ */

@media (max-width: 400px) {
  .container {
    margin: 25px auto;
    padding: 0 15px;
  }

  h1 {
    font-size: 1.6rem;
  }
}

/* ===============================
   Mobile Header
================================ */

@media (max-width: 480px) {

  .header-inner {
    padding: 6px 0;
  }

  .site-header img {
    height: 32px;
  }
}

/* =========================
   Tool list grouping labels
   ========================= */

.tool-group {
  list-style: none;
  margin-top: 1.5rem;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  opacity: 0.6;
}

.tool-group + li {
  margin-top: 0.25rem;
}

.related-calculators {
  margin-top: 2.5rem;
  font-size: 0.9rem;
  color: #666;
}

.related-calculators a {
  font-weight: 500;
}

/* ===============================
   Homepage Enhancements
   =============================== */

/* Hero section */
.hero {
  margin-bottom: 35px;
}

.hero h1 {
  margin-bottom: 12px;
}

.hero .intro {
  font-size: 1.05rem;
}

/* ===============================
   Category Hub
   =============================== */

.categories {
  margin-top: 40px;
}

.category-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.category-card {
  display: block;
  background: #fff;
  border-radius: 10px;
  padding: 16px;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 4px 8px rgba(0,0,0,0.05);
}

.category-card:hover {
  background: var(--accent-soft);
}

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

.category-card p {
  margin: 0;
  font-size: 0.95rem;
  color: #666;
}

/* ===============================
   Popular Tools
   =============================== */

.popular-tools {
  margin-top: 45px;
}

/* Reuse existing tool-list styles */
.popular-tools .tool-list li {
  margin-bottom: 10px;
}

/* ===============================
   Authority Content
   =============================== */

.authority {
  margin-top: 45px;
  font-size: 0.95rem;
  color: #555;
}

.authority p {
  margin-bottom: 12px;
}

.authority a {
  font-weight: 500;
}

/* ===============================
   Content Blocks (Cards)
================================ */

.content-block {
  margin-top: 45px;
  background: #fff;
  border-radius: 10px;
  padding: 16px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.05);
}

.content-block h2 {
  margin-top: 0;
}

/* ===============================
   FAQ Section
   =============================== */

.faq {
  margin-top: 45px;
}

.faq h3 {
  margin-top: 22px;
  margin-bottom: 6px;
  font-size: 1rem;
}

.faq p {
  margin-top: 0;
  font-size: 0.95rem;
  color: #555;
}

/* ===============================
   Comparison Tables (SEO)
================================ */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 25px 0;
  font-size: 0.95rem;
  background: #fff;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 8px rgba(0,0,0,0.05);
}

thead {
  background: var(--accent-soft);
}

th,
td {
  padding: 12px 14px;
  text-align: left;
}

th {
  font-weight: 600;
  color: var(--accent);
}

tbody tr:not(:last-child) {
  border-bottom: 1px solid #eee;
}

tbody tr strong {
  color: #111;
}

@media (max-width: 480px) {
  table {
    font-size: 0.9rem;
  }
}

/* ===============================
   Tooltip (calculator hints)
================================ */

.tooltip {
  position: relative;
  display: inline-block;
  margin-left: 4px;
  cursor: help;
  font-size: 0.9em;
  opacity: 0.7;
}

.tooltip:hover {
  opacity: 1;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  left: 50%;
  bottom: 125%;
  transform: translateX(-50%);
  min-width: 220px;
  max-width: 280px;
  padding: 8px 10px;
  background: #111;
  color: #fff;
  font-size: 0.85rem;
  line-height: 1.4;
  border-radius: 6px;
  white-space: normal;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
  z-index: 10;
}

.tooltip::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 115%;
  transform: translateX(-50%);
  border-width: 6px;
  border-style: solid;
  border-color: #111 transparent transparent transparent;
  opacity: 0;
  transition: opacity 0.15s ease;
}

.tooltip:hover::after,
.tooltip:hover::before {
  opacity: 1;
}

/* ===============================
   Primary Tool Highlight Box
   =============================== */

.primary-tool {
  margin: 1.75rem 0 2rem;
  padding: 1.25rem 1.5rem;
  border: 1px solid #e5e7eb;
  border-left: 4px solid var(--accent); /* subtle authority cue */
  background-color: #f9fafb;
  border-radius: 6px;
}

.primary-tool__label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #6b7280;
  margin-bottom: 0.35rem;
}

.primary-tool__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0 0 0.35rem;
  line-height: 1.35;
}

.primary-tool__title a {
  color: #111827;
  text-decoration: none;
}

.primary-tool__title a:hover {
  text-decoration: underline;
}

.primary-tool__description {
  font-size: 0.9rem;
  color: #374151;
  margin: 0;
}

.primary-tool + section {
  margin-top: 2.5rem;
}