/* stokd Tools — Shared Design System
   Plus Jakarta Sans + Bebas Neue
   Target: Linear/Vercel cleanliness on dark bg
*/
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700&family=Bebas+Neue&display=swap');

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

:root {
  --bg:      #0b0b0a;
  --bg-2:    #131311;
  --bg-3:    #1c1c1a;
  --border:  rgba(255,255,255,.09);
  --text:    #f0ead8;
  --text-2:  rgba(240,234,216,.55);
  --text-3:  rgba(240,234,216,.3);
  --accent:  #d7ff36;
  --accent-bg: rgba(215,255,54,.08);
  --font-display: 'Bebas Neue', Impact, sans-serif;
  --font-body: 'Plus Jakarta Sans', system-ui, sans-serif;
  --radius: 8px;
}

html { font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }

/* ── Nav ── */
.t-nav {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(20px, 4vw, 64px);
  height: 60px;
  background: rgba(11,11,10,.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.t-logo {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: -.01em;
  color: var(--text);
}
.t-nav-links {
  display: flex; align-items: center; gap: 6px;
}
.t-nav-links a {
  font-size: 13px; font-weight: 500;
  color: var(--text-2);
  padding: 6px 12px; border-radius: 6px;
  transition: color .15s, background .15s;
}
.t-nav-links a:hover { color: var(--text); background: rgba(255,255,255,.06); }
.t-nav-cta {
  font-size: 13px; font-weight: 600;
  padding: 7px 16px; border-radius: 6px;
  background: var(--accent); color: #0b0b0a;
  transition: opacity .15s;
}
.t-nav-cta:hover { opacity: .88; }

/* ── Page hero ── */
.t-hero {
  padding: 56px clamp(20px,4vw,64px) 48px;
  border-bottom: 1px solid var(--border);
  max-width: 1400px; margin: 0 auto;
}
.t-breadcrumb {
  font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .1em;
  color: var(--text-3); margin-bottom: 18px;
  display: flex; align-items: center; gap: 8px;
}
.t-breadcrumb a { color: var(--text-3); transition: color .15s; }
.t-breadcrumb a:hover { color: var(--text-2); }
.t-breadcrumb span { color: var(--text-3); }
.t-h1 {
  font-family: var(--font-display);
  font-size: clamp(48px, 7vw, 80px);
  line-height: .95; letter-spacing: .01em;
  color: var(--text); margin-bottom: 14px;
}
.t-h1 em { color: var(--accent); font-style: normal; }
.t-subtitle {
  font-size: 16px; font-weight: 400;
  color: var(--text-2); max-width: 540px; line-height: 1.55;
}

/* ── Calculator layout ── */
.t-calc-wrap {
  max-width: 1400px; margin: 0 auto;
  padding: 40px clamp(20px,4vw,64px) 80px;
  display: grid; grid-template-columns: 1fr 380px;
  gap: 24px; align-items: start;
}
.t-inputs-panel {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.t-inputs-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  font-size: 13px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .08em;
  color: var(--text-3);
}
.t-inputs-body { padding: 24px; display: grid; gap: 20px; }
.t-field { display: flex; flex-direction: column; gap: 6px; }
.t-label {
  font-size: 12px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .07em;
  color: var(--text-2);
}
.t-input, .t-select {
  width: 100%;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
  font-family: var(--font-body);
  font-size: 15px; font-weight: 500;
  color: var(--text);
  outline: none;
  transition: border-color .15s;
  -webkit-appearance: none;
}
.t-input:focus, .t-select:focus { border-color: var(--accent); }
.t-input::placeholder { color: var(--text-3); }
.t-hint { font-size: 12px; color: var(--text-3); line-height: 1.4; }
.t-select option { background: var(--bg-3); }
.t-input-prefix {
  position: relative;
}
.t-input-prefix::before {
  content: '$';
  position: absolute; left: 12px; top: 50%; transform: translateY(-50%);
  font-size: 14px; font-weight: 500; color: var(--text-3);
  pointer-events: none; z-index: 1;
}
.t-input-prefix .t-input { padding-left: 26px; }

/* ── Results panel ── */
.t-results-panel {
  position: sticky; top: 80px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.t-results-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  font-size: 13px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .08em;
  color: var(--text-3);
}
.t-result-main {
  padding: 28px 24px 20px;
  border-bottom: 1px solid var(--border);
}
.t-result-value {
  font-family: var(--font-body);
  font-size: 52px; font-weight: 700; line-height: 1;
  color: var(--accent); letter-spacing: -.02em;
  margin-bottom: 6px;
  transition: color .2s;
}
.t-result-value.negative { color: #ff6b6b; }
.t-result-label {
  font-size: 12px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .08em;
  color: var(--text-3);
}
.t-result-rows { padding: 8px 0; }
.t-result-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 11px 24px;
  border-bottom: 1px solid rgba(255,255,255,.05);
  font-size: 13px;
}
.t-result-row:last-child { border-bottom: none; }
.t-result-row-label { color: var(--text-2); font-weight: 400; }
.t-result-row-value { color: var(--text); font-weight: 600; }
.t-result-row-value.accent { color: var(--accent); }
.t-cta-block {
  padding: 20px 24px;
  border-top: 1px solid var(--border);
}
.t-cta-btn {
  display: flex; align-items: center; justify-content: center;
  width: 100%; padding: 11px 20px;
  background: var(--accent); color: #0b0b0a;
  border-radius: var(--radius);
  font-size: 13px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .05em;
  transition: opacity .15s;
}
.t-cta-btn:hover { opacity: .88; }
.t-cta-sub {
  margin-top: 10px; text-align: center;
  font-size: 11px; color: var(--text-3);
}

/* ── Divider section ── */
.t-section {
  max-width: 1400px; margin: 0 auto;
  padding: 48px clamp(20px,4vw,64px);
  border-top: 1px solid var(--border);
}
.t-section-label {
  font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .12em;
  color: var(--accent); margin-bottom: 12px;
}
.t-section-title {
  font-size: clamp(22px, 3vw, 30px); font-weight: 700;
  color: var(--text); margin-bottom: 8px; line-height: 1.2;
}
.t-section-lead { font-size: 15px; color: var(--text-2); max-width: 520px; }

/* ── 3-col how it works ── */
.t-how-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 16px; margin-top: 32px;
}
.t-how-card {
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
}
.t-how-num {
  font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .1em;
  color: var(--accent); margin-bottom: 10px;
}
.t-how-title { font-size: 14px; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.t-how-body { font-size: 13px; color: var(--text-2); line-height: 1.55; }

/* ── FAQ accordion ── */
.t-faq { display: grid; gap: 2px; margin-top: 28px; }
.t-faq details {
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
}
.t-faq details[open] { border-color: rgba(215,255,54,.2); }
.t-faq summary {
  padding: 16px 20px;
  font-size: 14px; font-weight: 600; color: var(--text);
  cursor: pointer; list-style: none;
  display: flex; justify-content: space-between; align-items: center;
  user-select: none;
}
.t-faq summary::after {
  content: '+'; font-size: 18px; font-weight: 300;
  color: var(--text-3); flex-shrink: 0; margin-left: 12px;
}
.t-faq details[open] summary::after { content: '−'; color: var(--accent); }
.t-faq details p {
  padding: 0 20px 16px;
  font-size: 13px; color: var(--text-2); line-height: 1.65;
}

/* ── Footer ── */
.t-footer {
  border-top: 1px solid var(--border);
  padding: 40px clamp(20px,4vw,64px);
}
.t-footer-inner {
  max-width: 1400px; margin: 0 auto;
  display: flex; flex-wrap: wrap;
  justify-content: space-between; gap: 32px;
}
.t-footer-brand .t-logo { font-size: 20px; display: block; margin-bottom: 8px; }
.t-footer-brand p { font-size: 12px; color: var(--text-3); max-width: 220px; }
.t-footer-col h4 {
  font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .1em;
  color: var(--text-3); margin-bottom: 12px;
}
.t-footer-col a {
  display: block; font-size: 13px; color: var(--text-2);
  margin-bottom: 8px; transition: color .15s;
}
.t-footer-col a:hover { color: var(--text); }
.t-footer-bottom {
  max-width: 1400px; margin: 24px auto 0;
  padding-top: 20px; border-top: 1px solid var(--border);
  font-size: 12px; color: var(--text-3);
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .t-calc-wrap { grid-template-columns: 1fr; }
  .t-results-panel { position: static; }
  .t-how-grid { grid-template-columns: 1fr; }
  .t-nav-links a:not(.t-nav-cta) { display: none; }
}