/* ============================================================
   TheStartupsHub — Home feature sections
   1. .terms-deck   — flip-card flashcards of key startup terms
   2. .calc-preview — two live mini calculators + link to full page
============================================================ */

.ix-head{text-align:center;max-width:660px;margin:0 auto 14px}
.ix-head .eyebrow{display:block;margin-bottom:12px}
.ix-head h2{font-size:clamp(1.7rem,3.4vw,2.5rem);line-height:1.12;margin-bottom:14px}
.ix-head p{color:var(--ink-soft);font-size:1.04rem}

/* ---------- 1. TERMINOLOGY FLASHCARDS ---------- */
.terms-deck{padding:90px 0;background:var(--paper)}
.fc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;max-width:1040px;margin:46px auto 0}
.fc{perspective:1200px;height:172px;cursor:pointer;background:none;border:none;padding:0;font-family:inherit;text-align:left}
.fc-inner{position:relative;width:100%;height:100%;transition:transform .5s cubic-bezier(.4,.2,.2,1);transform-style:preserve-3d}
.fc.flipped .fc-inner{transform:rotateY(180deg)}
.fc-face{position:absolute;inset:0;-webkit-backface-visibility:hidden;backface-visibility:hidden;border-radius:16px;padding:20px;display:flex;flex-direction:column;border:1px solid var(--line)}
.fc-front{background:var(--white)}
.fc-front .cat{font-family:'Sora',sans-serif;font-size:.68rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;margin-bottom:auto}
.fc-front h3{font-size:1.18rem;font-weight:700;margin:0}
.fc-front .flip-hint{font-size:.76rem;color:var(--ink-faint);margin-top:10px;display:flex;align-items:center;gap:6px}
.fc-back{background:var(--ink);color:#fff;transform:rotateY(180deg);justify-content:center}
.fc-back p{font-size:.92rem;line-height:1.55;color:rgba(247,246,242,.92);margin:0}
.fc-back .term{font-family:'Sora',sans-serif;font-size:.74rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--saffron-soft);margin-bottom:8px}
.fc-cat-fin{color:#0a6b49}.fc-cat-acc{color:#2f3aa3}.fc-cat-mkt{color:#c79200}.fc-cat-gen{color:#e85d04}
.terms-cta{text-align:center;margin-top:40px}

@media (max-width:900px){.fc-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:480px){.fc-grid{grid-template-columns:1fr}.fc{height:150px}}

/* ---------- 2. CALCULATOR PREVIEW ---------- */
.calc-preview{padding:90px 0;background:var(--ink);color:#fff;position:relative;overflow:hidden}
.calc-preview::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 10%,rgba(255,122,24,.12),transparent 45%),radial-gradient(circle at 10% 90%,rgba(47,58,163,.2),transparent 45%)}
.calc-preview>*{position:relative;z-index:1}
.calc-preview .ix-head h2{color:#fff}
.calc-preview .ix-head p{color:rgba(247,246,242,.66)}
.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;max-width:940px;margin:46px auto 0}
.calc-card{background:rgba(247,246,242,.04);border:1px solid rgba(247,246,242,.12);border-radius:18px;padding:26px}
.calc-card h3{font-size:1.2rem;color:#fff;margin-bottom:4px}
.calc-card .sub{font-size:.88rem;color:rgba(247,246,242,.6);margin-bottom:20px}
.calc-field{margin-bottom:16px}
.calc-field label{display:block;font-size:.82rem;font-weight:600;color:rgba(247,246,242,.85);margin-bottom:7px}
.calc-input-wrap{position:relative;display:flex;align-items:center}
.calc-input-wrap .pre{position:absolute;left:13px;color:rgba(247,246,242,.5);font-size:.95rem;pointer-events:none}
.calc-field input{width:100%;padding:12px 14px;border:1.5px solid rgba(247,246,242,.18);border-radius:11px;background:rgba(11,16,32,.5);color:#fff;font-family:inherit;font-size:.96rem}
.calc-field input.has-pre{padding-left:30px}
.calc-field input:focus{outline:none;border-color:var(--saffron);box-shadow:0 0 0 3px rgba(255,122,24,.16)}
.calc-field input::-webkit-outer-spin-button,.calc-field input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.calc-field input[type=number]{-moz-appearance:textfield}
.calc-out{margin-top:6px;background:linear-gradient(135deg,rgba(255,122,24,.16),rgba(15,138,95,.14));border:1px solid rgba(255,154,77,.3);border-radius:13px;padding:18px 20px;display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap}
.calc-out .lbl{font-size:.86rem;color:rgba(247,246,242,.8)}
.calc-out .val{font-family:'Sora',sans-serif;font-weight:800;font-size:1.7rem;color:#fff;line-height:1}
.calc-out .val small{font-size:.9rem;font-weight:600;color:rgba(247,246,242,.7);margin-left:3px}
.calc-note{font-size:.78rem;color:rgba(247,246,242,.5);margin-top:12px}
.calc-cta{text-align:center;margin-top:40px}

@media (max-width:820px){.calc-grid{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){.fc-inner{transition:none}}