/*
Theme Name:   Calculator Hub
Theme URI:    https://universalcalculatorhub.com
Description:  Child theme of Astra for Universal Calculator Hub
Author:       Universal Calculator Hub
Template:     astra
Version:      1.2.0
Tags:         responsive, custom, calculators
Text Domain:  calculator-hub
*/

/* ── ROOT VARIABLES ───────────────────────────────────────── */
:root {
  --primary:       #2563eb;
  --primary-dark:  #1d4ed8;
  --primary-light: #dbeafe;
  --accent:        #7c3aed;
  --success:       #059669;
  --warning:       #d97706;
  --text:          #1e293b;
  --text-muted:    #64748b;
  --bg:            #f8fafc;
  --bg-card:       #ffffff;
  --border:        #e2e8f0;
  --radius:        12px;
  --radius-lg:     20px;
  --shadow:        0 1px 3px rgba(0,0,0,.08), 0 4px 12px rgba(0,0,0,.06);
  --shadow-hover:  0 4px 12px rgba(0,0,0,.12), 0 12px 32px rgba(0,0,0,.08);
  --transition:    all .2s cubic-bezier(.4,0,.2,1);
}

/* ── RESET & BASE ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  margin: 0;
}

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

/* ── HEADER ───────────────────────────────────────────────── */
.site-header,
#masthead {
  background: #ffffff !important;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.site-branding .site-title a {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary) !important;
  letter-spacing: -0.5px;
}

.site-branding .site-title a span {
  color: var(--accent);
}

/* ── HERO / SEARCH SECTION ────────────────────────────────── */
.calc-hero {
  background: linear-gradient(135deg, #1e3a8a 0%, #3730a3 50%, #6d28d9 100%);
  padding: 14px 24px 16px;
  text-align: center;
  color: #fff;
}

.calc-hero h1 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  margin: 0 0 8px;
  letter-spacing: -0.5px;
}

.calc-hero p {
  font-size: 1rem;
  opacity: .85;
  margin: 0;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* Global search bar */
.calc-search-wrap {
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}

.calc-search-wrap input[type="text"],
.calc-search-wrap input[type="search"] {
  width: 100%;
  padding: 16px 60px 16px 20px;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  outline: none;
  box-shadow: 0 4px 24px rgba(0,0,0,.25);
  color: var(--text);
}

.calc-search-wrap button {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--primary);
  border: none;
  border-radius: 50px;
  width: 44px;
  height: 44px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.calc-search-wrap button:hover { background: var(--primary-dark); }
.calc-search-wrap button svg { stroke: #fff; width: 18px; height: 18px; fill: none; }

/* ── AD BANNER ────────────────────────────────────────────── */
.ad-banner {
  background: #f1f5f9;
  border: 1px dashed #cbd5e1;
  border-radius: var(--radius);
  text-align: center;
  padding: 12px;
  color: var(--text-muted);
  font-size: .8rem;
  letter-spacing: .05em;
  text-transform: uppercase;
  margin: 20px auto;
}

.ad-banner-top    { max-width: 960px; min-height: 90px; }
.ad-banner-bottom { max-width: 960px; min-height: 90px; }
.ad-banner-sidebar { min-height: 250px; width: 100%; }

/* ── CATEGORY CARDS ───────────────────────────────────────── */
.calc-categories {
  max-width: 1200px;
  margin: 0 auto;
  padding: 56px 24px 0;
}

.calc-categories h2 {
  text-align: center;
  font-size: 1.75rem;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--text);
}

.calc-categories .subtitle {
  text-align: center;
  color: var(--text-muted);
  margin: 0 0 40px;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.category-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
  cursor: pointer;
  text-decoration: none;
  display: block;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--card-color, var(--primary));
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.category-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: transparent;
}

.category-card.financial { --card-color: #2563eb; }
.category-card.fitness   { --card-color: #059669; }
.category-card.math      { --card-color: #7c3aed; }
.category-card.other     { --card-color: #d97706; }

.category-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  font-size: 1.8rem;
}

.category-card.financial .category-icon { background: #dbeafe; }
.category-card.fitness   .category-icon { background: #d1fae5; }
.category-card.math      .category-icon { background: #ede9fe; }
.category-card.other     .category-icon { background: #fef3c7; }

.category-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--text);
}

.category-card p {
  color: var(--text-muted);
  font-size: .9rem;
  margin: 0 0 16px;
  line-height: 1.5;
}

.category-card .calc-count {
  font-size: .8rem;
  font-weight: 600;
  color: var(--card-color, var(--primary));
  text-transform: uppercase;
  letter-spacing: .05em;
}

/* ── CALCULATOR GRID ──────────────────────────────────────── */
.calculator-grid {
  max-width: 1200px;
  margin: 48px auto;
  padding: 0 24px;
}

.calculator-grid h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.calculator-grid h2 .badge {
  font-size: .7rem;
  background: var(--primary-light);
  color: var(--primary);
  padding: 3px 10px;
  border-radius: 20px;
  font-weight: 600;
  text-transform: uppercase;
}

.calc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.calc-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
  transition: var(--transition);
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.calc-item:hover {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
  transform: translateY(-2px);
  color: var(--primary);
}

.calc-item .calc-icon { font-size: 2rem; }
.calc-item .calc-name { font-size: .9rem; font-weight: 600; }

/* ── SINGLE CALCULATOR PAGE ───────────────────────────────── */
.calculator-wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 24px;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
}

@media (max-width: 768px) {
  .calculator-wrap { grid-template-columns: 1fr; }
}

.calculator-main {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
}

.calculator-main h1 {
  font-size: 1.75rem;
  font-weight: 800;
  margin: 0 0 6px;
}

.calculator-main .calc-description {
  color: var(--text-muted);
  margin: 0 0 32px;
}

.calculator-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ── CALCULATOR UI COMPONENTS ─────────────────────────────── */
.calc-field {
  margin-bottom: 20px;
}

.calc-field label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  font-size: .9rem;
  color: var(--text);
}

.calc-field input[type="number"],
.calc-field input[type="text"],
.calc-field input[type="date"],
.calc-field select {
  width: 100%;
  padding: 12px 16px;
  height: 48px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  line-height: 1.5;
  color: var(--text) !important;
  -webkit-text-fill-color: #1e293b !important;
  transition: var(--transition);
  background: #fff !important;
  outline: none;
  appearance: auto;
  -webkit-appearance: auto;
}
.calc-field select option {
  color: #1e293b !important;
  background: #fff !important;
}

.calc-field input:focus,
.calc-field select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.calc-field .hint {
  font-size: .78rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.calc-btn {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  width: 100%;
  margin-top: 8px;
}

.calc-btn:hover { background: var(--primary-dark); transform: translateY(-1px); }
.calc-btn:active { transform: translateY(0); }

.calc-reset {
  background: transparent;
  color: var(--text-muted);
  border: 1.5px solid var(--border);
  padding: 12px 24px;
  border-radius: 8px;
  font-size: .9rem;
  cursor: pointer;
  transition: var(--transition);
  margin-top: 8px;
  width: 100%;
}

.calc-reset:hover { border-color: var(--text-muted); color: var(--text); }

/* Result box */
.calc-result {
  display: none;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  border-radius: var(--radius);
  padding: 24px;
  margin-top: 24px;
  text-align: center;
}

.calc-result.show { display: block; }

.calc-result .result-label {
  font-size: .85rem;
  opacity: .85;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 8px;
}

.calc-result .result-value {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1;
}

.calc-result .result-sub {
  font-size: .85rem;
  opacity: .8;
  margin-top: 8px;
}

/* Result grid for multi-value results */
.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.result-card {
  background: rgba(255,255,255,.15);
  border-radius: 8px;
  padding: 14px;
  text-align: center;
}

.result-card .rc-label { font-size: .75rem; opacity: .8; margin-bottom: 4px; }
.result-card .rc-value { font-size: 1.2rem; font-weight: 700; }

/* Error state */
.calc-error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #dc2626;
  border-radius: 8px;
  padding: 12px 16px;
  margin-top: 16px;
  font-size: .9rem;
  display: none;
}
.calc-error.show { display: block; }

/* Input groups with units */
.input-group {
  display: flex;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: var(--transition);
}

.input-group:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.input-group input {
  border: none !important;
  box-shadow: none !important;
  border-radius: 0 !important;
  flex: 1;
}

.input-group .unit {
  background: #f8fafc;
  border-left: 1.5px solid var(--border);
  padding: 12px 14px;
  font-size: .9rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  white-space: nowrap;
}

/* Tabs for calculator variants */
.calc-tabs {
  display: flex;
  gap: 4px;
  background: #f1f5f9;
  border-radius: 10px;
  padding: 4px;
  margin-bottom: 24px;
}

.calc-tab {
  flex: 1;
  padding: 8px 16px;
  border: none;
  border-radius: 7px;
  background: transparent;
  font-size: .9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-muted);
}

.calc-tab.active {
  background: #fff;
  color: var(--primary);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0,0,0,.1);
}

/* ── SIDEBAR WIDGETS ──────────────────────────────────────── */
.sidebar-widget {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.sidebar-widget h3 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.related-calc-list { list-style: none; padding: 0; margin: 0; }
.related-calc-list li { padding: 8px 0; border-bottom: 1px solid #f1f5f9; }
.related-calc-list li:last-child { border: none; }
.related-calc-list a {
  color: var(--text);
  font-size: .9rem;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}
.related-calc-list a:hover { color: var(--primary); padding-left: 4px; }

/* ── CONTENT TYPOGRAPHY (post content on calculator pages) ── */

/* Intro paragraph that sits above the calculator widget */
.calc-main-col > p:first-child {
  font-size: .975rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin: 0 0 24px;
  padding: 14px 18px;
  background: #f0f7ff;
  border-left: 3px solid var(--primary);
  border-radius: 0 8px 8px 0;
}

/* Section headings (How to Use, FAQ, etc.) */
.calc-main-col h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin: 36px 0 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
  letter-spacing: -.2px;
}

/* FAQ question headings */
.calc-main-col h3 {
  font-size: .975rem;
  font-weight: 700;
  color: var(--text);
  margin: 20px 0 6px;
  padding-left: 12px;
  border-left: 3px solid var(--primary);
}

/* Body paragraphs */
.calc-main-col p {
  font-size: .95rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin: 0 0 14px;
}

/* Ordered and unordered lists */
.calc-main-col ul,
.calc-main-col ol {
  font-size: .95rem;
  color: var(--text-muted);
  padding-left: 22px;
  margin: 0 0 18px;
  line-height: 1.75;
}

.calc-main-col li {
  margin-bottom: 8px;
}

.calc-main-col li strong {
  color: var(--text);
}

/* Bold text in paragraphs */
.calc-main-col p strong {
  color: var(--text);
  font-weight: 600;
}

/* Tables (used in GPA scale, body fat categories, etc.) */
.calc-main-col table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 20px;
  font-size: .9rem;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.calc-main-col th {
  background: #f1f5f9;
  color: var(--text);
  font-weight: 600;
  padding: 10px 14px;
  text-align: left;
  border: 1px solid var(--border);
}

.calc-main-col td {
  padding: 9px 14px;
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.calc-main-col tr:nth-child(even) td {
  background: #f8fafc;
}

/* Inline code (for formulas in body text) */
.calc-main-col code {
  background: #f1f5f9;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: .875rem;
  color: var(--primary-dark);
  font-family: 'SFMono-Regular', Consolas, monospace;
}

/* ── HOW-IT-WORKS SECTION ─────────────────────────────────── */
.how-it-works {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  margin-top: 24px;
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.how-it-works h4 {
  color: var(--text);
  font-size: 1rem;
  margin: 0 0 12px;
}

/* ── BREADCRUMBS ──────────────────────────────────────────── */
.calc-breadcrumb {
  max-width: 1100px;
  margin: 20px auto 0;
  padding: 0 24px;
  font-size: .85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.calc-breadcrumb a { color: var(--text-muted); }
.calc-breadcrumb a:hover { color: var(--primary); }
.calc-breadcrumb .sep { opacity: .4; }

/* ── FOOTER ───────────────────────────────────────────────── */
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  margin-top: 80px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 56px 24px 32px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}

@media (max-width: 768px) {
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 480px) {
  .footer-inner { grid-template-columns: 1fr; }
}

.footer-brand .brand-name {
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}

.footer-brand p { font-size: .9rem; line-height: 1.7; }

.footer-col h4 {
  color: #fff;
  font-size: .9rem;
  font-weight: 700;
  margin: 0 0 16px;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { color: #94a3b8; font-size: .9rem; transition: var(--transition); }
.footer-col ul a:hover { color: #fff; }

.footer-bottom {
  border-top: 1px solid #1e293b;
  padding: 20px 24px;
  text-align: center;
  font-size: .85rem;
  max-width: 1200px;
  margin: 0 auto;
}

/* ── RESPONSIVE ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .calc-hero { padding: 48px 20px 56px; }
  .calc-hero h1 { font-size: 1.8rem; }
  .category-grid { grid-template-columns: 1fr 1fr; }
  .calc-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
  .calculator-main { padding: 24px 20px; }
}

@media (max-width: 480px) {
  .category-grid { grid-template-columns: 1fr; }
  .calc-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ── STATIC PAGE TYPOGRAPHY (About, Privacy, Terms, etc.) ── */
.page-content-wrap {
  max-width: 820px;
  margin: 48px auto 80px;
  padding: 0 24px;
}

.page-article {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 56px;
  box-shadow: var(--shadow);
}

@media (max-width: 640px) {
  .page-article { padding: 28px 22px; }
}

.page-prose h1 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
  margin: 0 0 6px;
  letter-spacing: -.5px;
}

.page-prose > p:first-of-type {
  color: var(--text-muted);
  font-size: .9rem;
  margin: 0 0 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.page-prose h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin: 36px 0 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border);
}

.page-prose h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin: 20px 0 6px;
  padding-left: 12px;
  border-left: 3px solid var(--primary);
}

.page-prose p {
  font-size: .95rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin: 0 0 14px;
}

.page-prose p strong {
  color: var(--text);
  font-weight: 600;
}

.page-prose ul,
.page-prose ol {
  font-size: .95rem;
  color: var(--text-muted);
  padding-left: 22px;
  margin: 0 0 18px;
  line-height: 1.8;
}

.page-prose li {
  margin-bottom: 8px;
}

.page-prose li strong {
  color: var(--text);
}

.page-prose a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-prose a:hover {
  color: var(--primary-dark);
}

/* ── UTILITIES ────────────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* Loading spinner */
.calc-loading {
  display: none;
  justify-content: center;
  margin-top: 16px;
}
.calc-loading.show { display: flex; }
.spinner {
  width: 28px; height: 28px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Password strength meter */
.strength-bar {
  height: 4px;
  border-radius: 2px;
  background: var(--border);
  margin-top: 8px;
  overflow: hidden;
}
.strength-fill {
  height: 100%;
  border-radius: 2px;
  transition: width .3s, background .3s;
}

/* Dice face */
.dice-face {
  width: 80px; height: 80px;
  border: 3px solid var(--text);
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 900;
  background: #fff;
  box-shadow: var(--shadow);
  transition: transform .3s;
  margin: 8px;
}
.dice-face.rolling { animation: roll .5s ease; }
@keyframes roll {
  0%   { transform: rotateY(0); }
  50%  { transform: rotateY(90deg); }
  100% { transform: rotateY(0); }
}