/* ==========================================================================
   Nodify - storefront
   Ultra-minimalist light mode: white surfaces, hairline borders, generous
   whitespace, no decorative graphics.
   ========================================================================== */

/* ---- Navbar ------------------------------------------------------------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--hairline);
}
.nav-inner { display: flex; align-items: center; gap: 26px; height: var(--nav-h); }

.brand { display: inline-flex; align-items: baseline; gap: 0; }
.brand:hover { text-decoration: none; }
.brand-word { font-family: var(--display); font-weight: 700; font-size: 1.22rem; color: var(--heading); letter-spacing: -0.04em; }
.brand-word .dot { color: var(--accent); }

.nav-links { display: flex; gap: 22px; margin-left: 10px; }
.nav-links a { color: var(--body); font-size: 0.88rem; font-weight: 500; }
.nav-links a:hover { color: var(--heading); text-decoration: none; }
.nav-actions { margin-left: auto; display: flex; align-items: center; gap: 16px; }
.nav-signin { color: var(--body); font-size: 0.88rem; font-weight: 500; }
.nav-signin:hover { color: var(--heading); text-decoration: none; }
.nav-toggle { display: none; background: none; border: 1px solid var(--hairline); color: var(--heading); border-radius: var(--radius-sm); padding: 5px 9px; cursor: pointer; }

@media (max-width: 1040px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column; gap: 4px;
    position: absolute; top: var(--nav-h); left: 0; right: 0;
    background: var(--bg-elev); border-bottom: 1px solid var(--hairline); padding: 14px 24px;
  }
  .nav-toggle { display: inline-block; }
  .nav-signin { display: none; }
}

/* ---- Hero --------------------------------------------------------------- */
.hero { padding: 88px 0 64px; }
.hero-inner { max-width: 780px; }
.hero-title { margin-bottom: 16px; }
.hero-sub { max-width: 620px; margin: 0 0 28px; font-size: 1.05rem; color: var(--body); }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---- Sections ----------------------------------------------------------- */
.section { padding: 72px 0; border-top: 1px solid var(--hairline); }
.section-head { max-width: 560px; margin: 0 0 36px; }
.section-head.center { margin-left: auto; margin-right: auto; }
.narrow { max-width: 820px; margin: 0 auto; }

/* ---- Tabs / pricing ----------------------------------------------------- */
.tabs { display: inline-flex; gap: 4px; margin-bottom: 32px; background: var(--panel-2); border: 1px solid var(--hairline); border-radius: var(--radius-sm); padding: 4px; }
.tab { border: none; background: none; color: var(--body); font: inherit; font-weight: 500; font-size: 0.85rem; padding: 7px 16px; border-radius: var(--radius-sm); cursor: pointer; }
.tab.active { background: var(--bg-elev); color: var(--heading); border: 1px solid var(--hairline); }

.plan-pane { display: none; }
.plan-pane.active { display: block; }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
.plan-pane.active { animation: fade 0.2s ease; }

.plan-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 1080px) { .plan-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .plan-grid { grid-template-columns: 1fr; } }

.plan { display: flex; flex-direction: column; }
.plan.popular { border-color: var(--accent); }
.plan h3 { margin-bottom: 2px; }
.plan .price { font-family: var(--display); font-size: 1.9rem; font-weight: 700; color: var(--heading); letter-spacing: -0.03em; margin: 12px 0 4px; }
.plan .price span { font-family: var(--font); font-size: 0.82rem; font-weight: 500; color: var(--muted); }
.plan .plan-blurb { font-size: 0.86rem; min-height: 42px; margin-bottom: 14px; }
.plan ul.spec { list-style: none; padding: 0; margin: 0 0 20px; border-top: 1px solid var(--hairline); }
.plan ul.spec li { padding: 8px 0; font-size: 0.85rem; border-bottom: 1px solid var(--hairline); display: flex; gap: 8px; color: var(--body); }
.plan ul.spec li::before { content: '—'; color: var(--muted); }
.plan .plan-cta { margin-top: auto; }

.addon-strip, .callout {
  margin-top: 16px; display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 18px 22px; border-radius: var(--radius); border: 1px solid var(--hairline);
}
.addon-strip strong, .callout h3 { color: var(--heading); }
.addon-strip span.muted { display: block; font-size: 0.86rem; }
.addon-price { font-size: 1.1rem; color: var(--heading); font-weight: 600; font-family: var(--mono); }
.callout h3 { margin: 0 0 4px; }
.callout p { margin: 0; }

/* ---- Feature list ------------------------------------------------------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--hairline); border: 1px solid var(--hairline); border-radius: var(--radius); overflow: hidden; }
@media (max-width: 900px) { .feature-grid { grid-template-columns: 1fr; } }
.feature { background: var(--bg-elev); padding: 22px 24px; }
.feature h3 { font-size: 0.98rem; margin-bottom: 4px; }
.feature p { margin: 0; font-size: 0.86rem; color: var(--muted); }

/* ---- Infra grid --------------------------------------------------------- */
.infra-card h3 { font-size: 0.98rem; }
.infra-card p { font-size: 0.86rem; margin: 0; color: var(--muted); }

/* ---- FAQ ---------------------------------------------------------------- */
.faq { display: grid; gap: 10px; }
.faq-item { border: 1px solid var(--hairline); border-radius: var(--radius); background: var(--bg-elev); overflow: hidden; }
.faq-q { width: 100%; text-align: left; background: none; border: none; color: var(--heading); font: inherit; font-weight: 500; padding: 16px 20px; cursor: pointer; display: flex; justify-content: space-between; gap: 16px; align-items: center; }
.faq-q .chev { color: var(--muted); transition: transform 0.2s ease; font-family: var(--mono); }
.faq-item.open .chev { transform: rotate(45deg); color: var(--accent); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.28s ease; }
.faq-item.open .faq-a { max-height: 640px; }
.faq-a-inner { padding: 0 20px 18px; font-size: 0.88rem; color: var(--body); }
.faq-a code { display: block; background: var(--panel-2); border: 1px solid var(--hairline); border-radius: var(--radius-sm); padding: 10px 12px; margin: 8px 0; color: var(--heading); overflow-x: auto; }

/* ---- Footer ------------------------------------------------------------- */
.footer { border-top: 1px solid var(--hairline); background: var(--bg-elev); padding: 56px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-brand p { max-width: 300px; margin: 14px 0 0; }
.footer h4 { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); margin-bottom: 14px; }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { margin-bottom: 9px; }
.footer li a { color: var(--body); font-size: 0.86rem; }
.footer li a:hover { color: var(--heading); text-decoration: none; }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--hairline); }

/* ---- Auth --------------------------------------------------------------- */
.auth { min-height: calc(100vh - var(--nav-h)); display: flex; align-items: center; justify-content: center; padding: 56px 20px; }
.auth-card { width: 100%; max-width: 400px; padding: 32px; border-radius: var(--radius-lg); }
.auth-brand { margin-bottom: 20px; }
.auth-card h2 { margin-bottom: 4px; }
.auth-card .hint { font-size: 0.78rem; color: var(--muted); margin-top: 6px; }
.auth-switch { margin-top: 18px; }