/* =========================================================
   Prorated Rent Calculator - style.css
   Version auto-change: PHP (config.php)
   ========================================================= */

/* ---------- 1. Design tokens ---------- */
:root {
  --bg-primary: #050f0a;
  --bg-secondary: #0a1a10;
  --bg-card: #0d2018;
  --bg-card-hover: #123023;

  --green-primary: #00e676;
  --green-secondary: #00c853;
  --green-dim: #1a4d35;
  --green-glow: rgba(0, 230, 118, 0.12);

  --text-primary: #e8f5e9;
  --text-secondary: #81c784;
  --text-muted: #4caf50;

  --btn-text: #04140b;
  --header-bg: rgba(5, 15, 10, 0.88);

  --border: rgba(0, 230, 118, 0.18);
  --shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
  --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.35);

  --white: #ffffff;
  --danger: #ff5252;
  --star: #ffc107;

  --radius: 20px;
  --radius-sm: 12px;
  --radius-lg: 28px;
  --radius-pill: 999px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;

  --container-w: 1200px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.15s ease;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color-scheme: dark;
}

[data-theme="light"] {
  --bg-primary: #f5faf7;
  --bg-secondary: #eaf4ee;
  --bg-card: #ffffff;
  --bg-card-hover: #f2f9f4;

  --green-primary: #00a152;
  --green-secondary: #008f47;
  --green-dim: #d7ecdf;
  --green-glow: rgba(0, 200, 83, 0.10);

  --text-primary: #0d2018;
  --text-secondary: #1a4d35;
  --text-muted: #2e7d52;

  --btn-text: #ffffff;
  --header-bg: rgba(245, 250, 247, 0.9);

  --border: rgba(0, 180, 90, 0.2);
  --shadow: 0 4px 30px rgba(13, 32, 24, 0.08);
  --shadow-sm: 0 2px 8px rgba(13, 32, 24, 0.06);
  color-scheme: light;
}

/* ---------- 2. Reset + base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-primary);
  background-image:
    radial-gradient(900px 500px at 85% -10%, var(--green-glow), transparent 60%),
    radial-gradient(700px 400px at -10% 30%, var(--green-glow), transparent 60%);
  background-attachment: fixed;
  transition: background-color var(--transition), color var(--transition);
}
img, svg, canvas { max-width: 100%; display: block; }
a { color: var(--green-primary); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--green-secondary); text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 var(--space-3); color: var(--text-primary); }
p { margin: 0 0 var(--space-4); }
ul, ol { margin: 0 0 var(--space-4); padding-left: 22px; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--green-primary); outline-offset: 2px; }
::selection { background: var(--green-primary); color: var(--btn-text); }

.wrap { width: 100%; max-width: var(--container-w); margin: 0 auto; padding: 0 var(--space-4); }
.hidden { display: none !important; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: -9999px; top: 8px; z-index: 999;
  background: var(--green-primary); color: var(--btn-text);
  padding: 8px 16px; border-radius: var(--radius-sm); font-weight: 700;
}
.skip-link:focus { left: 8px; }

/* ---------- 3. Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--header-bg);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.hd-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); min-height: 68px; }

.logo {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 20px; font-weight: 800; color: var(--text-primary); letter-spacing: -0.3px;
}
.logo:hover { text-decoration: none; color: var(--text-primary); }
.logo em { font-style: normal; color: var(--green-primary); }

.main-nav ul { display: flex; align-items: center; gap: var(--space-1); list-style: none; margin: 0; padding: 0; }
.main-nav a {
  display: block; padding: 8px 14px; border-radius: var(--radius-pill);
  color: var(--text-secondary); font-weight: 600; font-size: 15px;
}
.main-nav a:hover { background: var(--green-glow); color: var(--green-primary); text-decoration: none; }
.main-nav a.active { background: var(--green-glow); color: var(--green-primary); box-shadow: inset 0 0 0 1px var(--border); }

.hd-actions { display: flex; align-items: center; gap: var(--space-2); }

.theme-toggle {
  width: 42px; height: 42px; display: grid; place-items: center;
  border-radius: 50%; border: 1px solid var(--border);
  background: var(--bg-card); font-size: 18px; line-height: 1;
  transition: transform var(--transition), background var(--transition);
}
.theme-toggle:hover { background: var(--bg-card-hover); transform: rotate(15deg); }
.theme-toggle .ico-sun { display: none; }
[data-theme="light"] .theme-toggle .ico-sun { display: inline; }
[data-theme="light"] .theme-toggle .ico-moon { display: none; }

.menu-toggle {
  display: none; width: 42px; height: 42px; padding: 0;
  border-radius: 50%; border: 1px solid var(--border); background: var(--bg-card);
  flex-direction: column; align-items: center; justify-content: center; gap: 4px;
}
.menu-toggle span { display: block; width: 18px; height: 2px; background: var(--green-primary); border-radius: 2px; transition: var(--transition); }
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 4. Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border-radius: var(--radius-pill); border: 1px solid transparent;
  font-weight: 700; font-size: 16px; line-height: 1.2;
  transition: transform var(--transition-fast), box-shadow var(--transition), background var(--transition);
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-primary {
  background: linear-gradient(135deg, var(--green-primary), var(--green-secondary));
  color: var(--btn-text); box-shadow: 0 6px 22px var(--green-glow);
}
.btn-primary:hover { color: var(--btn-text); box-shadow: 0 8px 28px rgba(0, 230, 118, 0.3); }
.btn-ghost { background: transparent; color: var(--green-primary); border-color: var(--border); }
.btn-ghost:hover { background: var(--green-glow); color: var(--green-primary); }
.btn-sm { padding: 9px 18px; font-size: 14px; }
.btn[disabled] { opacity: .55; pointer-events: none; }

/* ---------- 5. Hero ---------- */
.hero { padding: var(--space-8) 0 var(--space-6); text-align: center; }
.hero-badge {
  display: inline-block; padding: 6px 16px; margin-bottom: var(--space-4);
  border-radius: var(--radius-pill); border: 1px solid var(--border);
  background: var(--green-glow); color: var(--green-primary);
  font-size: 13px; font-weight: 700; letter-spacing: .6px; text-transform: uppercase;
}
.hero h1 {
  font-size: clamp(30px, 5vw, 52px); font-weight: 800; letter-spacing: -1px;
  max-width: 900px; margin: 0 auto var(--space-4);
}
.hero h1 span { color: var(--green-primary); }
.hero p { max-width: 820px; margin: 0 auto var(--space-4); font-size: 18px; color: var(--text-secondary); }
.hero-points { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-2); list-style: none; padding: 0; margin: var(--space-5) 0 0; }
.hero-points li {
  padding: 8px 16px; border-radius: var(--radius-pill);
  background: var(--bg-card); border: 1px solid var(--border);
  font-size: 14px; font-weight: 600; color: var(--text-secondary);
}

/* ---------- 6. Sections ---------- */
.section { padding: var(--space-7) 0; }
.sec-head { text-align: center; max-width: 760px; margin: 0 auto var(--space-6); }
.sec-head h2 { font-size: clamp(26px, 3.5vw, 36px); font-weight: 800; letter-spacing: -.5px; }
.sec-head h2 span { color: var(--green-primary); }
.sec-head p { color: var(--text-secondary); }

/* ---------- 7. Calculator ---------- */
.calc-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); box-shadow: var(--shadow);
  padding: var(--space-6);
}
.calc-top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-5); }
.calc-title { font-size: 22px; font-weight: 800; margin: 0; }

.mode-tabs {
  display: inline-flex; flex-wrap: wrap; gap: 4px; padding: 4px;
  background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-pill);
}
.mode-tabs button {
  padding: 9px 18px; border: 0; border-radius: var(--radius-pill);
  background: transparent; color: var(--text-secondary); font-weight: 700; font-size: 14px;
  transition: var(--transition);
}
.mode-tabs button:hover { color: var(--green-primary); }
.mode-tabs button.active { background: var(--green-primary); color: var(--btn-text); box-shadow: 0 2px 12px var(--green-glow); }

.calc-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-4) var(--space-5); }
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 14px; font-weight: 700; color: var(--text-secondary); }
.field input, .field select {
  width: 100%; min-height: 50px; padding: 12px 16px;
  background: var(--bg-secondary); color: var(--text-primary);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.field input:hover, .field select:hover { border-color: var(--green-dim); }
.field input:focus, .field select:focus { outline: none; border-color: var(--green-primary); box-shadow: 0 0 0 3px var(--green-glow); }
.field input.error { border-color: var(--danger); box-shadow: 0 0 0 3px rgba(255, 82, 82, .15); }
.field-hint { font-size: 12.5px; color: var(--text-muted); }
.field-error { font-size: 13px; color: var(--danger); min-height: 0; }

.input-prefix { position: relative; }
.input-prefix > span {
  position: absolute; left: 16px; top: 50%; transform: translateY(-50%);
  color: var(--green-primary); font-weight: 800; pointer-events: none;
}
.input-prefix input { padding-left: 34px; }

.seg { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.seg label {
  flex: 1 1 140px; position: relative; cursor: pointer;
  padding: 11px 14px; text-align: center; font-size: 14px; font-weight: 700;
  background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text-secondary); transition: var(--transition);
}
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg label:hover { border-color: var(--green-primary); }
.seg label:has(input:checked) { background: var(--green-glow); border-color: var(--green-primary); color: var(--green-primary); }

.check-row { display: flex; align-items: center; gap: 10px; font-size: 14px; font-weight: 600; color: var(--text-secondary); }
.check-row input { width: 20px; height: 20px; min-height: 0; accent-color: var(--green-primary); }

.calc-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-5); }

/* ---------- 8. Results ---------- */
.results { margin-top: var(--space-6); scroll-margin-top: 90px; }
.results.show { animation: fadeUp .45s ease both; }

.result-card {
  background: var(--bg-card);
  background-image: radial-gradient(500px 220px at 100% 0%, var(--green-glow), transparent 70%);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: var(--space-6); box-shadow: var(--shadow);
}
.res-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-3); margin-bottom: var(--space-4); }
.res-brand { font-weight: 800; font-size: 16px; color: var(--text-primary); }
.res-brand em { font-style: normal; color: var(--green-primary); }
.res-date { font-size: 13px; color: var(--text-muted); }

.res-main {
  text-align: center; padding: var(--space-5) var(--space-4); margin-bottom: var(--space-5);
  background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius);
}
.res-label { font-size: 13px; font-weight: 700; letter-spacing: .8px; text-transform: uppercase; color: var(--text-secondary); }
.res-amount { font-size: clamp(38px, 7vw, 64px); font-weight: 800; line-height: 1.1; color: var(--green-primary); margin: 6px 0; letter-spacing: -1px; }
.res-sub { font-size: 15px; color: var(--text-secondary); margin: 0; }

.res-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-3); margin-bottom: var(--space-5); }
.stat {
  padding: var(--space-4); text-align: center;
  background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-sm);
  transition: var(--transition);
}
.stat:hover { background: var(--bg-card-hover); transform: translateY(-2px); }
.stat b { display: block; font-size: 20px; color: var(--text-primary); }
.stat small { display: block; font-size: 12.5px; color: var(--text-muted); font-weight: 600; }

.chart-box { margin-bottom: var(--space-5); padding: var(--space-4); background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius); }
.chart-box h3 { font-size: 16px; margin-bottom: var(--space-3); }
.chart-wrap { position: relative; width: 100%; }
.chart-wrap canvas { width: 100%; height: auto; }
.chart-legend { display: flex; flex-wrap: wrap; gap: var(--space-4); margin-top: var(--space-3); font-size: 13px; font-weight: 600; color: var(--text-secondary); }
.chart-legend i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; }

.res-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.res-table th, .res-table td { padding: 11px 12px; text-align: left; border-bottom: 1px solid var(--border); }
.res-table th { color: var(--text-secondary); font-weight: 700; font-size: 13px; text-transform: uppercase; letter-spacing: .5px; }
.res-table td:last-child, .res-table th:last-child { text-align: right; }
.res-table tr:last-child td { border-bottom: 0; }
.res-table .total td { font-weight: 800; color: var(--green-primary); }

.res-note { margin: var(--space-4) 0 0; font-size: 13px; color: var(--text-muted); }
.res-foot {
  margin-top: var(--space-5); padding-top: var(--space-4);
  border-top: 1px dashed var(--border); text-align: center;
  font-size: 13px; color: var(--text-secondary);
}
.res-foot a { font-weight: 700; }

/* Download + share */
.share-bar {
  margin-top: var(--space-5); padding: var(--space-5); text-align: center;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
}
.share-bar h3 { font-size: 18px; margin-bottom: var(--space-1); }
.share-bar p { font-size: 14px; color: var(--text-secondary); margin-bottom: var(--space-4); }
.share-btns { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-3); }

/* Result card export mode (JS image/pdf banate waqt class lagayega) */
.result-card.exporting { box-shadow: none; width: 760px; max-width: none; }

/* ---------- 9. How to use ---------- */
.howto-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
.how-card {
  position: relative; padding: var(--space-5);
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  transition: var(--transition);
}
.how-card:hover { background: var(--bg-card-hover); transform: translateY(-3px); box-shadow: var(--shadow-sm); }
.how-card h3 { font-size: 18px; margin-bottom: var(--space-2); }
.how-card p { font-size: 15px; color: var(--text-secondary); margin: 0 0 var(--space-2); }
.how-card p:last-child { margin-bottom: 0; }
.how-card .tip { font-size: 13.5px; color: var(--text-muted); }
.step-num {
  display: inline-grid; place-items: center; width: 38px; height: 38px; margin-bottom: var(--space-3);
  border-radius: 50%; background: var(--green-primary); color: var(--btn-text); font-weight: 800;
}

/* ---------- 10. Article ---------- */
.article {
  max-width: 880px; margin: 0 auto; padding: var(--space-6);
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg);
}
.article h2 { font-size: clamp(24px, 3vw, 30px); margin-top: var(--space-6); padding-bottom: var(--space-2); border-bottom: 1px solid var(--border); }
.article h2:first-child { margin-top: 0; }
.article h3 { font-size: 20px; margin-top: var(--space-5); color: var(--green-primary); }
.article p, .article li { color: var(--text-primary); opacity: .92; }
.article li { margin-bottom: 6px; }
.article strong { color: var(--green-primary); }
.article table { width: 100%; border-collapse: collapse; margin: var(--space-4) 0; font-size: 15px; display: block; overflow-x: auto; }
.article th, .article td { padding: 10px 14px; border: 1px solid var(--border); text-align: left; white-space: nowrap; }
.article th { background: var(--bg-secondary); color: var(--green-primary); }
.callout {
  margin: var(--space-4) 0; padding: var(--space-4) var(--space-5);
  background: var(--green-glow); border-left: 4px solid var(--green-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.callout p:last-child { margin-bottom: 0; }
.formula {
  margin: var(--space-4) 0; padding: var(--space-4); text-align: center;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 15px; font-weight: 700;
  background: var(--bg-secondary); border: 1px dashed var(--green-primary); border-radius: var(--radius-sm);
  color: var(--green-primary); overflow-x: auto;
}

/* ---------- 11. FAQ (+ / -) ---------- */
.faq-list { max-width: 880px; margin: 0 auto; display: grid; gap: var(--space-3); }
.faq-item { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; transition: var(--transition); }
.faq-item.open { border-color: var(--green-primary); box-shadow: 0 0 0 3px var(--green-glow); }
.faq-q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: var(--space-4);
  padding: var(--space-4) var(--space-5); text-align: left;
  background: transparent; border: 0; font-size: 17px; font-weight: 700; color: var(--text-primary);
}
.faq-q:hover { color: var(--green-primary); }
.faq-q::after {
  content: "+"; flex: 0 0 auto; display: grid; place-items: center;
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--green-glow); color: var(--green-primary);
  font-size: 22px; font-weight: 700; line-height: 1;
}
.faq-item.open .faq-q::after { content: "\2212"; background: var(--green-primary); color: var(--btn-text); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-a-inner { padding: 0 var(--space-5) var(--space-4); color: var(--text-secondary); }
.faq-a-inner p:last-child { margin-bottom: 0; }

/* ---------- 12. Footer ---------- */
.site-footer { margin-top: var(--space-7); padding: var(--space-7) 0 var(--space-5); background: var(--bg-secondary); border-top: 1px solid var(--border); }
.f-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: var(--space-6); }
.f-grid p { color: var(--text-secondary); font-size: 15px; margin-top: var(--space-3); }
.f-col h4 { font-size: 16px; margin-bottom: var(--space-3); color: var(--green-primary); }
.f-col ul { list-style: none; padding: 0; margin: 0; }
.f-col li { margin-bottom: 8px; }
.f-col a { color: var(--text-secondary); font-size: 15px; }
.f-col a:hover { color: var(--green-primary); }
.f-bottom {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-3);
  margin-top: var(--space-6); padding-top: var(--space-4); border-top: 1px solid var(--border);
  font-size: 14px; color: var(--text-muted);
}
.f-bottom p { margin: 0; }
.f-links { display: flex; flex-wrap: wrap; gap: var(--space-4); }
.f-links a { color: var(--text-secondary); }
.f-links a:hover { color: var(--green-primary); }
.f-note { margin: var(--space-4) 0 0; font-size: 13px; color: var(--text-muted); }

/* ---------- 13. Page content (about / contact / policy) ---------- */
.page-head { padding: var(--space-7) 0 var(--space-4); text-align: center; }
.page-head h1 { font-size: clamp(28px, 4.5vw, 44px); font-weight: 800; }
.page-head p { color: var(--text-secondary); max-width: 700px; margin: 0 auto; }

/* ---------- 14. Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 24px; z-index: 200;
  transform: translate(-50%, 20px); opacity: 0; pointer-events: none;
  padding: 12px 22px; border-radius: var(--radius-pill);
  background: var(--green-primary); color: var(--btn-text); font-weight: 700; font-size: 14px;
  box-shadow: var(--shadow); transition: var(--transition);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- 15. Animations ---------- */
@keyframes fadeUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* ---------- 16. Responsive ---------- */
@media (max-width: 992px) {
  .howto-grid { grid-template-columns: repeat(2, 1fr); }
  .res-grid { grid-template-columns: repeat(2, 1fr); }
  .f-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 820px) {
  .menu-toggle { display: flex; }
  .main-nav {
    position: absolute; left: 0; right: 0; top: 100%;
    background: var(--bg-secondary); border-bottom: 1px solid var(--border);
    max-height: 0; overflow: hidden; transition: max-height .3s ease;
  }
  .main-nav.open { max-height: 380px; }
  .main-nav ul { flex-direction: column; align-items: stretch; padding: var(--space-3) var(--space-4); }
  .main-nav a { padding: 12px 16px; border-radius: var(--radius-sm); }
}

@media (max-width: 640px) {
  .hero { padding: var(--space-6) 0 var(--space-5); }
  .hero p { font-size: 16px; }
  .section { padding: var(--space-6) 0; }
  .calc-card, .result-card, .article { padding: var(--space-4); border-radius: var(--radius); }
  .calc-grid { grid-template-columns: 1fr; }
  .calc-top { flex-direction: column; align-items: stretch; }
  .mode-tabs { width: 100%; }
  .mode-tabs button { flex: 1 1 auto; padding: 9px 10px; }
  .howto-grid { grid-template-columns: 1fr; }
  .res-grid { gap: var(--space-2); }
  .stat { padding: var(--space-3); }
  .stat b { font-size: 17px; }
  .res-table { font-size: 14px; }
  .faq-q { padding: var(--space-3) var(--space-4); font-size: 16px; }
  .faq-a-inner { padding: 0 var(--space-4) var(--space-3); }
  .f-grid { grid-template-columns: 1fr; gap: var(--space-5); }
  .f-bottom { flex-direction: column; align-items: flex-start; }
  .btn { width: 100%; }
  .btn-sm { width: auto; }
  .share-btns .btn { width: 100%; }
}

/* ---------- 17. Tool tabs (slider menu) + roommate rows ---------- */
.tool-tabs {
  position: relative; display: flex; gap: var(--space-2);
  overflow-x: auto; scroll-snap-type: x proximity; -webkit-overflow-scrolling: touch;
  padding: var(--space-2) 2px var(--space-3); margin-bottom: var(--space-3); scrollbar-width: none;
}
.tool-tabs::-webkit-scrollbar { display: none; }
.tool-tabs button {
  flex: 0 0 auto; scroll-snap-align: center; display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px; border-radius: var(--radius-pill);
  border: 1px solid var(--border); background: var(--bg-card);
  color: var(--text-secondary); font-weight: 700; font-size: 15px; white-space: nowrap;
  transition: var(--transition);
}
.tool-tabs button:hover { background: var(--bg-card-hover); color: var(--green-primary); }
.tool-tabs button.active {
  background: linear-gradient(135deg, var(--green-primary), var(--green-secondary));
  color: var(--btn-text); border-color: transparent; box-shadow: 0 6px 22px var(--green-glow);
}
@media (min-width: 900px) { .tool-tabs { justify-content: center; } }

.person-row {
  grid-column: 1 / -1; display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-3);
  padding: var(--space-4); background: var(--bg-secondary);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
}
@media (max-width: 640px) { .person-row { grid-template-columns: 1fr; } }