/* ─── THEME TOKENS ─────────────────────────────── */
[data-theme="light"] {
  --bg:          #FFFFFF;
  --bg2:         #F8FAFC;
  --bg3:         #F1F5F9;
  --surface:     #FFFFFF;
  --border:      #E2E8F0;
  --border2:     #CBD5E1;
  --text:        #0D1F3C;
  --text2:       #4B5563;
  --text3:       #64748B;
  --text4:       #94A3B8;
  --accent:      #2563EB;
  --accent-h:    #1D4ED8;
  --accent-lt:   #EFF6FF;
  --accent-tx:   #2563EB;
  --nav-bg:      rgba(255,255,255,.93);
  --hero-bg:     linear-gradient(180deg,#F6F9FF 0%,#FFFFFF 100%);
  --section-alt: #F8FAFC;
  --dark-cta:    #0D1F3C;
  --dark-cta2:   #1A3258;
  --card-shadow: 0 1px 3px rgba(0,0,0,.05);
  --card-shadow-h: 0 6px 22px rgba(0,0,0,.09);
  --green:       #16A34A;
  --green-bg:    #F0FDF4;
  --amber:       #D97706;
  --amber-bg:    #FFF7ED;
  --red:         #DC2626;
  --red-bg:      #FEF2F2;
  --chip-bg:     #EFF6FF;
  --chip-tx:     #2563EB;
}
[data-theme="dark"] {
  --bg:          #0F172A;
  --bg2:         #1E293B;
  --bg3:         #263347;
  --surface:     #1E293B;
  --border:      #334155;
  --border2:     #475569;
  --text:        #F1F5F9;
  --text2:       #94A3B8;
  --text3:       #64748B;
  --text4:       #475569;
  --accent:      #3B82F6;
  --accent-h:    #2563EB;
  --accent-lt:   #1D3461;
  --accent-tx:   #93C5FD;
  --nav-bg:      rgba(15,23,42,.92);
  --hero-bg:     linear-gradient(180deg,#0B1120 0%,#0F172A 100%);
  --section-alt: #1E293B;
  --dark-cta:    #0F2150;
  --dark-cta2:   #0D1F3C;
  --card-shadow: 0 1px 3px rgba(0,0,0,.3);
  --card-shadow-h: 0 6px 22px rgba(0,0,0,.45);
  --green:       #4ADE80;
  --green-bg:    #052E16;
  --amber:       #FCD34D;
  --amber-bg:    #1C1506;
  --red:         #F87171;
  --red-bg:      #1C0505;
  --chip-bg:     #1D3461;
  --chip-tx:     #93C5FD;
}

/* ─── BASE ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Plus Jakarta Sans', -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  transition: background .25s, color .25s;
}
button { font-family: inherit; cursor: pointer; }
a { text-decoration: none; }

/* ─── NAV ──────────────────────────────────────── */
.qf-nav {
  position: sticky; top: 0; z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: background .25s, border-color .25s;
}
.qf-nav-inner {
  max-width: 1160px; margin: 0 auto;
  padding: 0 28px; height: 62px;
  display: flex; align-items: center; gap: 4px;
}
.qf-logo {
  background: none; border: none; padding: 0;
  display: flex; align-items: center; gap: 9px;
  margin-right: 28px; cursor: pointer; text-decoration: none;
}
.qf-logo-icon {
  width: 32px; height: 32px; border-radius: 8px;
  background: linear-gradient(135deg, #1D4ED8, #0D9488);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.qf-logo-text {
  font-weight: 800; font-size: 17px;
  color: var(--text); letter-spacing: -.3px;
  transition: color .25s;
}
.qf-logo-text span { color: var(--accent); transition: color .25s; }
.qf-logo-roiq {
  font-size: 11px; font-weight: 700; letter-spacing: .06em;
  color: var(--text3); margin-left: 2px; transition: color .25s;
}
.qf-nav-links { display: flex; gap: 2px; flex: 1; }
.qf-nav-link {
  font-size: 13px; font-weight: 500;
  color: var(--text2); padding: 6px 11px;
  border-radius: 7px; border: none; background: none;
  transition: color .18s, background .18s;
  text-decoration: none; display: flex; align-items: center;
}
.qf-nav-link:hover { color: var(--text); background: var(--bg3); }
.qf-nav-link.active { color: var(--accent); background: var(--accent-lt); }
.qf-nav-right { display: flex; align-items: center; gap: 8px; margin-left: auto; }

/* Theme toggle */
.qf-toggle-wrap {
  display: flex; align-items: center;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 100px; padding: 3px; gap: 2px;
  transition: background .25s, border-color .25s;
}
.qf-toggle-opt {
  border: none; background: none;
  width: 28px; height: 28px; border-radius: 100px;
  font-size: 14px; display: flex; align-items: center; justify-content: center;
  transition: background .18s; color: var(--text2);
}
.qf-toggle-opt.on {
  background: var(--surface);
  box-shadow: 0 1px 4px rgba(0,0,0,.12);
}

/* ─── BUTTONS ──────────────────────────────────── */
.btn-p {
  background: var(--accent); color: #fff;
  border: none; padding: 10px 20px;
  border-radius: 8px; font-size: 13px; font-weight: 600;
  transition: background .18s, box-shadow .18s, transform .12s;
  cursor: pointer; font-family: inherit;
}
.btn-p:hover { background: var(--accent-h); box-shadow: 0 4px 14px rgba(37,99,235,.35); transform: translateY(-1px); }
.btn-s {
  background: var(--surface); color: var(--text);
  border: 1.5px solid var(--border);
  padding: 10px 20px; border-radius: 8px;
  font-size: 13px; font-weight: 600;
  transition: border-color .18s, background .18s;
  cursor: pointer; font-family: inherit;
}
.btn-s:hover { border-color: var(--border2); background: var(--bg2); }
.btn-lg { padding: 13px 26px !important; font-size: 15px !important; border-radius: 10px !important; }

/* ─── LAYOUT ────────────────────────────────────── */
.container    { max-width: 1160px; margin: 0 auto; padding: 0 28px; }
.container-md { max-width: 860px;  margin: 0 auto; padding: 0 28px; }
.container-sm { max-width: 760px;  margin: 0 auto; padding: 0 28px; }

/* ─── TYPOGRAPHY ────────────────────────────────── */
.serif { font-family: 'Instrument Serif', Georgia, serif; font-weight: 400; line-height: 1.15; letter-spacing: -.4px; }
.serif em { font-style: italic; }
.section-label { font-size: 11px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); transition: color .25s; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--chip-bg); color: var(--chip-tx);
  font-size: 12px; font-weight: 700;
  padding: 4px 12px; border-radius: 100px;
  transition: background .25s, color .25s;
}
.remix-pill { background: #F5F3FF; color: #7C3AED; }
[data-theme="dark"] .remix-pill { background: #1E1433; color: #A78BFA; }
.teal-pill { background: #F0FDFA; color: #0F766E; }
[data-theme="dark"] .teal-pill { background: #042F2E; color: #2DD4BF; }

/* ─── GRID BG ───────────────────────────────────── */
.grid-bg {
  background-image:
    linear-gradient(rgba(37,99,235,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37,99,235,.04) 1px, transparent 1px);
  background-size: 52px 52px;
}

/* ─── CARDS ─────────────────────────────────────── */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; padding: 24px;
  box-shadow: var(--card-shadow);
  transition: box-shadow .2s, transform .2s, background .25s, border-color .25s;
}
.card:hover { box-shadow: var(--card-shadow-h); transform: translateY(-2px); }

/* ─── ANIMATIONS ────────────────────────────────── */
@keyframes fadeUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
@keyframes spin   { to { transform: rotate(360deg); } }
@keyframes cookieSlide { from { opacity:0; transform:translateX(-50%) translateY(16px); } to { opacity:1; transform:translateX(-50%) translateY(0); } }
@keyframes cookieFade  { from { opacity:1; transform:translateX(-50%) translateY(0); } to { opacity:0; transform:translateX(-50%) translateY(12px); } }
.fu  { animation: fadeUp .5s ease both; }
.fu1 { animation-delay: .05s; } .fu2 { animation-delay: .13s; }
.fu3 { animation-delay: .21s; } .fu4 { animation-delay: .29s; }
.fu5 { animation-delay: .38s; }

/* ─── DASHBOARD MOCKUP ──────────────────────────── */
.dash {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; overflow: hidden;
  box-shadow: 0 16px 56px rgba(0,0,0,.14);
  max-width: 520px; width: 100%;
  transition: background .25s, border-color .25s;
}
.dash-topbar { background: var(--bg); border-bottom: 1px solid var(--border); padding: 10px 16px; display: flex; align-items: center; gap: 6px; transition: background .25s; }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.kpi-row { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; margin-bottom: 16px; }
.kpi { background: var(--bg2); border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; transition: background .25s, border-color .25s; }

/* ─── LEGAL PAGES ───────────────────────────────── */
.legal-section { padding: 56px 0 80px; }
.legal-section h2 {
  font-size: 17px; font-weight: 700; color: var(--text);
  margin-bottom: 12px; padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  transition: color .25s, border-color .25s;
}
.legal-section h3 { font-size: 14px; font-weight: 700; color: var(--text); margin-bottom: 10px; transition: color .25s; }
.legal-section p  { font-size: 15px; line-height: 1.85; color: var(--text2); transition: color .25s; }
.legal-list { list-style: none; display: flex; flex-direction: column; gap: 9px; padding-left: 4px; }
.legal-list li { display: flex; gap: 10px; font-size: 14px; color: var(--text2); line-height: 1.7; transition: color .25s; }
.legal-list li span.arrow { color: var(--accent); font-weight: 700; flex-shrink: 0; margin-top: 2px; transition: color .25s; }
.legal-list li span.cross { color: var(--red);    font-weight: 700; flex-shrink: 0; margin-top: 2px; transition: color .25s; }
.legal-block { display: flex; flex-direction: column; gap: 40px; }
.legal-contact-card {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 10px; padding: 24px 26px;
  transition: background .25s, border-color .25s;
}

/* ─── FAQ ───────────────────────────────────────── */
details { border-bottom: 1px solid var(--border); padding: 18px 0; transition: border-color .25s; }
details summary { cursor: pointer; font-weight: 600; font-size: 15px; color: var(--text); list-style: none; display: flex; justify-content: space-between; align-items: center; user-select: none; }
details summary::-webkit-details-marker { display: none; }
details summary::after { content: '+'; font-size: 20px; font-weight: 300; color: var(--text3); }
details[open] summary::after { content: '−'; }
details p { margin-top: 12px; font-size: 14px; color: var(--text2); line-height: 1.8; }

/* ─── PLAYGROUND ────────────────────────────────── */
.drop-zone {
  border: 2px dashed var(--border2); border-radius: 16px;
  padding: 44px 28px; text-align: center;
  background: var(--bg2); transition: all .2s; cursor: pointer;
}
.drop-zone.drag-over, .drop-zone:hover { border-color: var(--accent); background: var(--accent-lt); }
.spinner { width: 44px; height: 44px; border: 3px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin .75s linear infinite; margin: 0 auto 24px; }
.rtable { width: 100%; border-collapse: collapse; }
.rtable th { padding: 10px 16px; text-align: left; font-size: 11px; font-weight: 700; color: var(--text3); text-transform: uppercase; letter-spacing: .06em; background: var(--bg2); border-bottom: 1px solid var(--border); }
.rtable td { padding: 13px 16px; border-bottom: 1px solid var(--border); font-size: 13px; color: var(--text); }
.rtable tr:last-child td { border-bottom: none; }

/* ─── FEATURE MAP TABLE ──────────────────────────── */
.fmap { width: 100%; border-collapse: collapse; }
.fmap th { padding: 9px 14px; text-align: left; font-size: 11px; font-weight: 700; color: var(--text3); text-transform: uppercase; letter-spacing: .06em; background: var(--bg2); border-bottom: 2px solid var(--border2); }
.fmap td { padding: 11px 14px; border-bottom: 1px solid var(--border); font-size: 13px; color: var(--text); vertical-align: top; transition: background .15s; }
.fmap tr:hover td { background: var(--bg2); }
.fmap tr:last-child td { border-bottom: none; }
.tag-sm { display: inline-block; font-size: 10px; font-weight: 600; padding: 2px 7px; border-radius: 4px; margin: 2px 2px 2px 0; font-family: monospace; background: var(--bg3); color: var(--text2); border: 1px solid var(--border); transition: background .25s, border-color .25s; }

/* ─── FOOTER ─────────────────────────────────────── */
.qf-footer { background: var(--bg); border-top: 1px solid var(--border); padding: 52px 0 36px; transition: background .25s, border-color .25s; }
.qf-footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 44px; margin-bottom: 40px; }
.qf-footer-col-title { font-size: 11px; font-weight: 700; color: var(--text3); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 14px; transition: color .25s; }
.qf-footer-link { display: block; font-size: 13px; color: var(--text2); cursor: pointer; margin-bottom: 10px; transition: color .18s; text-decoration: none; }
.qf-footer-link:hover { color: var(--text); }
.qf-footer-bottom { border-top: 1px solid var(--border); padding-top: 22px; display: flex; justify-content: space-between; align-items: center; transition: border-color .25s; }

/* ─── COOKIE BANNER ──────────────────────────────── */
.qf-cookie {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  z-index: 9999; width: calc(100% - 48px); max-width: 760px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 20px 24px;
  box-shadow: 0 8px 40px rgba(0,0,0,.18);
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
  transition: background .25s, border-color .25s;
  animation: cookieSlide .4s cubic-bezier(.16,1,.3,1) both;
}

/* ─── RESPONSIVE GRID UTILITIES ──────────────────── */
.r-grid-2  { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.r-grid-3  { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.r-grid-4  { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; }
.r-grid-hero { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.r-grid-split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.r-grid-split-center { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.r-grid-footer { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 44px; margin-bottom: 40px; }
.r-grid-pricing { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.r-grid-about { display: grid; grid-template-columns: 1fr 2fr; gap: 80px; }
.r-flex-cta { display: flex; gap: 12px; }
.r-flex-stats { display: flex; gap: 32px; margin-top: 36px; }
.r-flex-compat { display: flex; align-items: center; gap: 44px; flex-wrap: wrap; }
.r-section { padding: 80px 28px; }
.r-section-sm { padding: 64px 28px; }
.r-hero { padding: 84px 28px 96px; }

/* ─── HAMBURGER MENU ─────────────────────────────── */
.qf-hamburger {
  display: none;
  flex-direction: column; justify-content: center;
  gap: 5px; width: 36px; height: 36px;
  border: none; background: none; cursor: pointer;
  padding: 6px; border-radius: 8px;
  transition: background .18s;
}
.qf-hamburger:hover { background: var(--bg3); }
.qf-hamburger span {
  display: block; height: 2px; width: 100%;
  background: var(--text); border-radius: 2px;
  transition: all .25s;
}
.qf-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.qf-hamburger.open span:nth-child(2) { opacity: 0; }
.qf-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav drawer */
.qf-nav-drawer {
  display: none;
  position: fixed; top: 62px; left: 0; right: 0; bottom: 0;
  background: var(--nav-bg); backdrop-filter: blur(18px);
  border-top: 1px solid var(--border);
  z-index: 99; padding: 20px 24px;
  flex-direction: column; gap: 4px;
  overflow-y: auto;
}
.qf-nav-drawer.open { display: flex; }
.qf-nav-drawer .qf-nav-link {
  font-size: 16px; padding: 13px 16px;
  border-radius: 10px; width: 100%;
}
.qf-nav-drawer-divider {
  height: 1px; background: var(--border);
  margin: 12px 0;
}
.qf-nav-drawer-ctas { display: flex; flex-direction: column; gap: 10px; margin-top: 4px; }
.qf-nav-drawer-ctas .btn-p,
.qf-nav-drawer-ctas .btn-s { width: 100%; padding: 13px 20px; font-size: 15px; text-align: center; border-radius: 10px; }

/* ─── TABLET — 1024px ────────────────────────────── */
@media (max-width: 1024px) {
  .r-grid-hero    { gap: 40px; }
  .r-grid-split   { gap: 44px; }
  .r-grid-split-center { gap: 44px; }
  .r-grid-footer  { grid-template-columns: 1fr 1fr; gap: 32px; }
  .r-grid-about   { gap: 48px; }
  .dash { max-width: 100%; }
}

/* ─── SMALL TABLET — 768px ───────────────────────── */
@media (max-width: 768px) {
  /* Nav: hide links + right controls, show hamburger */
  .qf-nav-links  { display: none; }
  .qf-nav-right  { display: none; }
  .qf-hamburger  { display: flex; margin-left: auto; }
  .qf-nav-inner  { padding: 0 20px; }

  /* Grids → single column */
  .r-grid-2,
  .r-grid-3,
  .r-grid-4,
  .r-grid-hero,
  .r-grid-split,
  .r-grid-split-center,
  .r-grid-pricing,
  .r-grid-about   { grid-template-columns: 1fr; gap: 20px; }

  .r-grid-footer  { grid-template-columns: 1fr 1fr; gap: 28px; }
  .r-flex-cta     { flex-direction: column; }
  .r-flex-stats   { gap: 20px; flex-wrap: wrap; }
  .r-section      { padding: 56px 20px; }
  .r-section-sm   { padding: 44px 20px; }
  .r-hero         { padding: 52px 20px 64px; }

  /* Hero: hide dashboard mockup on mobile */
  .hero-dash      { display: none; }

  /* Containers */
  .container, .container-md, .container-sm { padding: 0 20px; }

  /* Features section intro grid */
  .features-intro { grid-template-columns: 1fr !important; gap: 16px !important; }

  /* Pricing: most popular badge shift */
  .r-grid-pricing > div:nth-child(2) { margin-top: 14px; }

  /* Compatible strip */
  .r-flex-compat  { gap: 16px; }

  /* Stats row */
  .stats-row { flex-direction: column; gap: 0; }
  .stats-row > div { border-left: none !important; border-top: 1px solid var(--border); padding: 20px 0 !important; }
  .stats-row > div:first-child { border-top: 1px solid var(--border); }

  /* Footer bottom */
  .qf-footer-bottom { flex-direction: column; gap: 14px; text-align: center; }

  /* Cookie */
  .qf-cookie { flex-direction: column; bottom: 16px; gap: 14px; }

  /* Legal pages */
  .legal-section { padding: 36px 0 56px; }
}

/* ─── MOBILE — 480px ─────────────────────────────── */
@media (max-width: 480px) {
  .r-grid-footer { grid-template-columns: 1fr; gap: 24px; }
  .r-flex-stats  { gap: 16px; }
  .btn-lg        { padding: 12px 20px !important; font-size: 14px !important; }

  details summary { font-size: 14px; }
  .qf-footer-bottom { font-size: 11px; }

  /* Pricing: show all 3 plans stacked cleanly */
  .r-grid-pricing > div:nth-child(2) { margin-top: 20px; }
}