/* ==========================================================
   NVS Technologies - main stylesheet
   Sections: variables, base, layout, header, hero, products,
   principles, about, contact, footer, responsive
   ========================================================== */

:root {
  --navy: #0d1540;
  --navy-light: #162060;
  --indigo: #4f46e5;
  --indigo-dark: #4338ca;
  --accent: #6b7bff;
  --text: #1c2033;
  --muted: #5d6479;
  --line: #e4e7f0;
  --soft: #f6f7fb;
  --white: #fff;
  --radius: 10px;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 72px; }

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--text);
  line-height: 1.65;
  background: var(--white);
}

h1, h2, h3, h4 { line-height: 1.2; margin: 0; }
p { margin: 0 0 1rem; }
a { color: var(--indigo); }
ul { margin: 0; padding: 0; list-style: none; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }

.container { width: min(1120px, 100% - 40px); margin-inline: auto; }

.skip-link {
  position: absolute; left: 12px; top: -60px;
  background: var(--white); color: var(--navy);
  padding: 8px 14px; border-radius: 6px; z-index: 200;
}
.skip-link:focus { top: 12px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 13px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1.5px solid transparent;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.2s, transform 0.15s, border-color 0.2s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--indigo); color: var(--white); }
.btn-primary:hover { background: var(--indigo-dark); }
.btn-outline { border-color: rgba(255,255,255,0.35); color: var(--white); }
.btn-outline:hover { border-color: var(--white); }
.btn-small { padding: 9px 18px; font-size: 0.875rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--navy);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: box-shadow 0.25s;
}
.site-header.scrolled { box-shadow: 0 4px 18px rgba(0,0,0,0.25); }

.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}

.logo {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--white); text-decoration: none; font-size: 1.15rem;
}
.logo strong { font-weight: 800; }

.main-nav { display: flex; align-items: center; gap: 32px; }
.main-nav a:not(.btn) {
  color: #b8c0e0; text-decoration: none; font-size: 0.92rem; font-weight: 500;
  padding: 4px 0; border-bottom: 2px solid transparent;
}
.main-nav a:not(.btn):hover,
.main-nav a.active { color: var(--white); border-bottom-color: var(--accent); }

.nav-toggle {
  display: none;
  background: none; border: 0; padding: 8px; cursor: pointer;
}
.nav-toggle span {
  display: block; width: 24px; height: 2px; margin: 5px 0;
  background: var(--white); transition: transform 0.25s, opacity 0.25s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(ellipse 60% 70% at 70% 40%, rgba(79,70,229,0.35), transparent 70%),
    var(--navy);
  color: var(--white);
  padding: 110px 0 120px;
}

.pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 14px; margin-bottom: 26px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 999px;
  font-size: 0.8rem; color: #c9d0ee;
}
.dot { width: 6px; height: 6px; border-radius: 50%; background: #34d399; }

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  max-width: 13em;
  margin-bottom: 22px;
}
.hero-text { max-width: 34em; font-size: 1.15rem; color: #b8c0e0; margin-bottom: 34px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* ---------- Sections ---------- */
.section { padding: 96px 0; }
.section-soft { background: var(--soft); }

.kicker {
  color: var(--indigo); font-weight: 600; font-size: 0.85rem; margin-bottom: 8px;
}
.section h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  letter-spacing: -0.02em; margin-bottom: 40px;
}

/* ---------- Product card ---------- */
.product-card {
  display: grid; grid-template-columns: 1.3fr 1fr; gap: 40px;
  padding: 40px;
  border: 1.5px solid var(--indigo);
  border-radius: 14px;
  background: var(--white);
  box-shadow: 0 10px 40px -18px rgba(79,70,229,0.35);
}
.product-info p { color: var(--muted); max-width: 32em; }

.tag {
  display: inline-block; padding: 3px 12px; margin-bottom: 18px;
  background: #eceefe; color: var(--indigo);
  border-radius: 6px; font-size: 0.78rem; font-weight: 600;
}
.product-icon {
  width: 52px; height: 52px; margin-bottom: 18px;
  display: grid; place-items: center;
  background: var(--indigo); color: var(--white); border-radius: 12px;
}
.product-info h3 { font-size: 1.9rem; letter-spacing: -0.02em; }
.product-tagline { color: var(--indigo) !important; font-weight: 600; font-size: 0.9rem; margin: 4px 0 14px; }


.product-features h4 { font-size: 0.85rem; color: var(--muted); margin-bottom: 14px; font-weight: 600; }
.product-features ul { display: flex; flex-wrap: wrap; gap: 8px; }
.product-features li {
  padding: 5px 13px; font-size: 0.82rem;
  border: 1px solid var(--line); border-radius: 999px; background: var(--soft);
}

.coming-soon {
  display: flex; flex-direction: column; gap: 2px;
  margin-top: 20px; padding: 22px 26px;
  border: 1.5px dashed #cdd2e3; border-radius: var(--radius);
  background: var(--soft);
}
.coming-soon span { color: var(--muted); font-size: 0.9rem; }

/* ---------- Principles ---------- */
.principles {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px;
}
.principle {
  background: var(--white);
  padding: 28px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
}
.principle h3 { font-size: 1.05rem; margin-bottom: 8px; }
.principle p { font-size: 0.93rem; color: var(--muted); margin: 0; }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-grid p { color: var(--muted); max-width: 32em; }
.mv { display: grid; gap: 18px; }
.mv-card { padding: 26px 28px; background: var(--soft); border-radius: var(--radius); }
.mv-card h3 { font-size: 0.95rem; color: var(--indigo); margin-bottom: 6px; }
.mv-card p { margin: 0; font-size: 0.95rem; }

/* ---------- Contact ---------- */
.contact {
  background:
    radial-gradient(ellipse 50% 80% at 85% 20%, rgba(79,70,229,0.3), transparent 70%),
    var(--navy);
  color: var(--white);
}
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.contact h2 { margin-bottom: 16px; }
.contact p { color: #b8c0e0; max-width: 30em; }
.contact a { color: #c7ceff; }

.contact-form {
  background: var(--navy-light);
  padding: 30px; border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.08);
}
.contact-form label { display: block; font-size: 0.85rem; font-weight: 500; margin: 0 0 6px; }
.contact-form input,
.contact-form textarea {
  width: 100%; margin-bottom: 18px; padding: 11px 14px;
  font: inherit; color: var(--white);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 8px;
}
.contact-form input:focus,
.contact-form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(107,123,255,0.3); }
.contact-form .invalid { border-color: #f87171; }
.contact-form .btn { width: 100%; }
.form-status { margin: 14px 0 0; min-height: 1.4em; font-size: 0.9rem; text-align: center; }
.form-status.error { color: #fca5a5 !important; }
.form-status.ok { color: #86efac !important; }

/* ---------- Footer ---------- */
.site-footer { background: #080e2c; color: #aab2d3; padding-top: 60px; font-size: 0.9rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 44px; }
.footer-blurb { margin-top: 14px; max-width: 24em; }
.footer-grid h4 { color: var(--white); font-size: 0.9rem; margin-bottom: 14px; }
.footer-grid a:not(.logo) { display: block; color: #aab2d3; text-decoration: none; margin-bottom: 8px; }
.footer-grid a:not(.logo):hover { color: var(--white); }
.footer-bottom {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  padding: 22px 0; border-top: 1px solid rgba(255,255,255,0.08); font-size: 0.82rem;
}

/* ---------- Back to top ---------- */
.to-top {
  position: fixed; right: 20px; bottom: 20px;
  width: 44px; height: 44px; border-radius: 50%;
  border: 0; background: var(--indigo); color: var(--white);
  font-size: 1.2rem; cursor: pointer;
  box-shadow: 0 6px 18px rgba(0,0,0,0.25);
}
.to-top[hidden] { display: none; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .nav-toggle { display: block; }

  .main-nav {
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--navy); padding: 8px 20px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    display: none;
  }
  .main-nav.open { display: flex; }
  .main-nav a:not(.btn) { padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,0.08); }
  .main-nav .btn { margin-top: 16px; text-align: center; }

  .hero { padding: 80px 0 90px; }
  .section { padding: 70px 0; }
  .product-card, .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .product-card { padding: 26px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}

/* ---------- Logo images ---------- */
.logo img { display: block; height: 38px; width: auto; }
.site-footer .logo img { height: 34px; }

/* Money Ledgr app icon in the product card */
.product-logo {
  display: block;
  width: 84px; height: 84px;
  margin-bottom: 18px;
  border-radius: 20px;
  box-shadow: 0 6px 20px -6px rgba(79,70,229,0.4);
}

/* ---------- Product buttons ---------- */
.product-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 12px; }
.btn-secondary { background: transparent; color: var(--indigo); border-color: var(--indigo); }
.btn-secondary:hover { background: #eceefe; }

/* ---------- Screenshot viewer ---------- */
.showcase {
  width: min(960px, 94vw);
  max-height: 92vh;
  padding: 0;
  border: 0;
  border-radius: 18px;
  background: var(--white);
  color: var(--text);
  box-shadow: 0 30px 80px rgba(5, 10, 40, 0.5);
}
.showcase::backdrop { background: rgba(8, 13, 40, 0.75); backdrop-filter: blur(4px); }
.sc-inner { display: grid; grid-template-columns: 0.8fr 1fr; position: relative; max-height: 92vh; }
.sc-close {
  position: absolute; top: 12px; right: 14px; z-index: 2;
  width: 38px; height: 38px; border: 0; border-radius: 50%;
  background: var(--soft); color: var(--text); font-size: 1.5rem; line-height: 1; cursor: pointer;
}
.sc-close:hover { background: var(--line); }

.sc-stage { background: linear-gradient(160deg, #e9edff, #eaf7f4); display: grid; place-items: center; padding: 22px; }
.sc-stage img { display: block; width: auto; max-width: 100%; max-height: calc(92vh - 44px); border-radius: 14px; box-shadow: 0 18px 40px -16px rgba(20, 30, 90, 0.45); transition: opacity 0.2s; }
.sc-stage img.fading { opacity: 0; }

.sc-side { padding: 40px 36px 32px; overflow-y: auto; display: flex; flex-direction: column; }
.sc-side h3 { font-size: 1.6rem; margin-bottom: 10px; letter-spacing: -0.01em; }
.sc-side p#sc-text { color: var(--muted); min-height: 5.2em; }

.sc-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin: 6px 0 22px; }
.sc-tabs button {
  padding: 7px 14px; font: 500 0.85rem inherit; font-family: inherit; cursor: pointer;
  background: var(--soft); border: 1px solid var(--line); border-radius: 999px; color: var(--text);
}
.sc-tabs button:hover { border-color: var(--indigo); }
.sc-tabs button.active { background: var(--indigo); border-color: var(--indigo); color: var(--white); }

.sc-nav { display: flex; align-items: center; gap: 14px; margin-bottom: 24px; font-size: 0.9rem; color: var(--muted); }
.sc-arrow { width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--line); background: var(--white); font-size: 1.1rem; cursor: pointer; }
.sc-arrow:hover { border-color: var(--indigo); color: var(--indigo); }
.sc-side .btn { align-self: flex-start; margin-top: auto; }

html.modal-open { overflow: hidden; }

@media (max-width: 760px) {
  .sc-inner { grid-template-columns: 1fr; overflow-y: auto; }
  .sc-stage { padding: 18px 18px 8px; }
  .sc-stage img { max-height: 46vh; }
  .sc-side { padding: 22px 22px 26px; overflow: visible; }
  .sc-side p#sc-text { min-height: 0; }
  .sc-side .btn { width: 100%; text-align: center; margin-top: 4px; }
}

.more-link { margin: 18px 0 0 !important; font-size: 0.92rem; font-weight: 600; }
.more-link a { text-decoration: none; }
.more-link a:hover { text-decoration: underline; }

.contact-form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.contact-form button:disabled { opacity: 0.7; cursor: wait; }

/* ---------- Hero with phone visual (home + product page) ---------- */
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: center; }
.hero-visual { position: relative; justify-self: center; width: min(360px, 100%); aspect-ratio: 1 / 1.12; }
.hero-visual img {
  position: absolute; width: 56%; height: auto;
  border: 6px solid #10162f; border-radius: 28px; background: #10162f;
  box-shadow: 0 30px 60px -20px rgba(0,0,0,0.55);
}
.hv-back { right: 0; top: 0; transform: rotate(7deg); opacity: 0.92; }
.hv-front { left: 0; bottom: 0; transform: rotate(-5deg); }

/* ---------- Footer extras ---------- */
.footer-mail { margin: 14px 0 0; font-size: 0.88rem; }
.footer-grid .footer-mail a { display: inline; margin: 0; color: #c7ceff; }

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { width: min(280px, 80%); }
}