/*
  CXFUN – Global Styles
  Modern, clean, corporate yet friendly.
*/

/* CSS Reset (trimmed) */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html:focus-within { scroll-behavior: smooth; }
html, body { height: 100%; }
body { line-height: 1.6; -webkit-font-smoothing: antialiased; }
img, picture, video, canvas, svg { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; }

:root {
  --color-bg: #0b1020;
  --color-panel: #10172a;
  --color-elev: #0f172a;
  --color-text: #e5e7eb;
  --color-muted: #9aa4b2;
  --color-primary: #6366f1; /* indigo-500 */
  --color-primary-600: #4f46e5;
  --color-primary-700: #4338ca;
  --color-accent: #22d3ee; /* cyan-400 */
  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 60px rgba(0, 0, 0, 0.45);
  --container: 1200px;
  --ease: cubic-bezier(.2,.8,.2,1);
}

/* Light theme overrides */
[data-theme="light"] {
  --color-bg: #f8fafc;
  --color-panel: #ffffff;
  --color-elev: #ffffff;
  --color-text: #0f172a;
  --color-muted: #475569;
  --shadow-sm: 0 4px 14px rgba(2, 6, 23, 0.06);
  --shadow-md: 0 10px 30px rgba(2, 6, 23, 0.08);
  --shadow-lg: 0 24px 60px rgba(2, 6, 23, 0.12);
}

body {
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(1200px 600px at 80% -10%, rgba(79,70,229,.25), transparent 70%),
              radial-gradient(1000px 600px at -10% 0%, rgba(34,211,238,.18), transparent 60%),
              var(--color-bg);
  color: var(--color-text);
}
[data-theme="light"] body {
  background: radial-gradient(1200px 600px at 80% -10%, rgba(79,70,229,.12), transparent 70%),
              radial-gradient(1000px 600px at -10% 0%, rgba(34,211,238,.10), transparent 60%),
              var(--color-bg);
}

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding: 0 24px;
}

.container.narrow { max-width: 860px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(180%) blur(10px);
  background: color-mix(in oklab, var(--color-elev) 90%, transparent);
  border-bottom: 1px solid rgba(148, 163, 184, 0.08);
}
[data-theme="light"] .site-header { background: color-mix(in oklab, var(--color-elev) 70%, transparent); border-color: rgba(2,6,23,0.06); }
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: inherit; text-decoration: none; font-weight: 700; letter-spacing: .2px; }
.brand img { filter: drop-shadow(0 4px 10px rgba(79,70,229,.4)); }

.nav { display: flex; align-items: center; gap: 20px; }
.nav-menu { display: flex; list-style: none; gap: 12px; }
.nav-menu a { color: var(--color-muted); text-decoration: none; padding: 10px 12px; border-radius: 8px; transition: color .2s var(--ease), background .2s var(--ease); }
.nav-menu a:hover { color: var(--color-text); background: rgba(148,163,184,0.08); }
.nav-menu a.active { color: white; background: rgba(99,102,241,.18); }

.nav-cta .btn { padding: 10px 14px; }
.nav-toggle { display: none; background: transparent; border: 0; cursor: pointer; }
.nav-toggle .bar { display: block; width: 22px; height: 2px; background: var(--color-text); margin: 5px 0; transition: transform .2s var(--ease); }

/* Theme toggle */
.theme-toggle { border: 1px solid rgba(148,163,184,0.14); background: rgba(148,163,184,0.08); color: var(--color-text); border-radius: 999px; padding: 8px 12px; cursor: pointer; }
.theme-toggle:hover { background: rgba(148,163,184,0.14); }

/* Hero */
.hero { padding: 72px 0 40px; }
.hero-inner { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; }
.hero h1 { font-size: clamp(36px, 4vw, 56px); line-height: 1.05; letter-spacing: -0.02em; }
.hero p { margin-top: 14px; color: var(--color-muted); font-size: 18px; }
.actions { margin-top: 22px; display: flex; gap: 12px; flex-wrap: wrap; }
.hero-highlights { margin-top: 18px; display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 10px; list-style: none; color: var(--color-muted); font-size: 14px; }
.hero-media { position: relative; }
.hero-media img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); background: linear-gradient(180deg, rgba(99,102,241,.12), rgba(34,211,238,.10)); }

/* Sections */
.section-header { text-align: center; margin-bottom: 28px; }
.eyebrow { color: var(--color-accent); font-weight: 600; letter-spacing: .12em; text-transform: uppercase; font-size: 12px; }
.section-header h2 { margin-top: 10px; font-size: clamp(26px, 3vw, 36px); }
.section-header .subhead { color: var(--color-muted); margin-top: 8px; }

.logos { padding: 26px 0 14px; }
.logo-row { margin-top: 12px; list-style: none; display: grid; grid-template-columns: repeat(5, minmax(0,1fr)); gap: 16px; color: var(--color-muted); }
.logo-row li { background: rgba(148,163,184,0.06); padding: 10px 14px; border-radius: var(--radius-sm); text-align: center; }

.feature-grid { padding: 36px 0 10px; }
.grid { display: grid; gap: 16px; }
.grid.two { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(0,1fr)); }

.card { background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01)); border: 1px solid rgba(148,163,184,0.12); border-radius: var(--radius-md); padding: 18px; box-shadow: var(--shadow-sm); }
[data-theme="light"] .card { background: #ffffff; border-color: rgba(2,6,23,0.06); }
.card.feature .icon { font-size: 22px; }
.card h3 { margin-top: 6px; margin-bottom: 8px; font-size: 18px; }
.card p { color: var(--color-muted); }

.card.mini { padding: 14px; }
.card.person { text-align: center; }
.avatar { width: 56px; height: 56px; display: grid; place-items: center; border-radius: 50%; background: rgba(99,102,241,.2); margin: 0 auto 10px; font-weight: 700; }

.cta { padding: 44px 0 64px; }
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 16px; background: radial-gradient(600px 200px at 10% 0%, rgba(79,70,229,.25), transparent 60%), var(--color-panel); border: 1px solid rgba(148,163,184,0.12); border-radius: var(--radius-lg); padding: 24px; box-shadow: var(--shadow-md); }
[data-theme="light"] .cta-inner { background: radial-gradient(600px 200px at 10% 0%, rgba(79,70,229,.12), transparent 60%), var(--color-panel); border-color: rgba(2,6,23,0.08); }
.cta .subhead, .cta p { color: var(--color-muted); }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* Page hero */
.page-hero { padding: 56px 0 24px; border-bottom: 1px solid rgba(148,163,184,0.08); background: linear-gradient(180deg, rgba(79,70,229,.08), transparent); }
[data-theme="light"] .page-hero { background: linear-gradient(180deg, rgba(79,70,229,.05), transparent); border-color: rgba(2,6,23,0.06); }
.page-hero h1 { font-size: clamp(28px, 3.2vw, 40px); }
.page-hero .subhead { color: var(--color-muted); margin-top: 6px; }

/* Feature sections */
.feature-sections { padding: 30px 0; }
.section-block { display: grid; grid-template-columns: 1.1fr .9fr; gap: 22px; align-items: center; padding: 16px 0; }
.section-block.reverse { grid-template-columns: .9fr 1.1fr; }
.section-copy h2 { font-size: 26px; }
.check-list { margin-top: 10px; color: var(--color-muted); }
.check-list li { margin-left: 18px; }

/* Pricing */
.pricing { padding: 30px 0; }
.pricing-grid { margin-top: 6px; }
.pricing-card { position: relative; overflow: hidden; }
.pricing-card .plan-badge { font-weight: 700; color: white; background: rgba(99,102,241,.25); padding: 6px 10px; border-radius: 999px; display: inline-flex; }
.pricing-card .price { margin: 10px 0 6px; }
.pricing-card .amount { font-size: 34px; font-weight: 800; letter-spacing: -0.02em; }
.pricing-card .period { color: var(--color-muted); }
.pricing-card .plan-features { margin: 12px 0 16px; color: var(--color-muted); }
.pricing-card .plan-features li { margin-left: 16px; }
.pricing-card.highlight { border-color: rgba(79,70,229,.4); box-shadow: 0 10px 40px rgba(79,70,229,.25); }

.faq { margin-top: 30px; }
.accordion details { background: rgba(148,163,184,0.06); border: 1px solid rgba(148,163,184,0.12); border-radius: var(--radius-md); padding: 12px 16px; margin-bottom: 10px; }
[data-theme="light"] .accordion details { background: #ffffff; border-color: rgba(2,6,23,0.08); }
.accordion summary { cursor: pointer; font-weight: 600; }
.accordion p { color: var(--color-muted); margin-top: 6px; }

/* Contact */
.contact { padding: 26px 0; }
.contact-card.alt { background: linear-gradient(180deg, rgba(99,102,241,.06), rgba(34,211,238,.06)); }
.contact-list { color: var(--color-muted); }
.contact-list li { margin-bottom: 8px; }
.tip { margin-top: 10px; display: flex; gap: 10px; align-items: center; color: var(--color-muted); }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 10px; }
.form-grid label { display: grid; gap: 6px; }
.form-grid label.full { grid-column: 1 / -1; }
input[type="text"], input[type="email"], input[type="tel"], textarea {
  background: rgba(148,163,184,0.06);
  border: 1px solid rgba(148,163,184,0.14);
  color: var(--color-text);
  border-radius: 10px;
  padding: 12px 12px;
}
input:focus, textarea:focus { outline: 2px solid rgba(99,102,241,.4); border-color: rgba(99,102,241,.5); }
.form-actions { margin-top: 12px; display: flex; gap: 12px; align-items: center; }

/* Footer */
.site-footer { padding: 32px 0 40px; border-top: 1px solid rgba(148,163,184,0.08); margin-top: 30px; }
[data-theme="light"] .site-footer { border-color: rgba(2,6,23,0.06); }
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr .8fr; gap: 20px; }
.footer-nav h4 { margin-bottom: 8px; font-size: 14px; color: #c7d2fe; }
.footer-nav ul { list-style: none; color: var(--color-muted); }
.footer-nav li { margin-bottom: 6px; }
.footer-nav a { color: var(--color-muted); text-decoration: none; }
.footer-nav a:hover { color: var(--color-text); }
.footer-bottom { margin-top: 18px; display: flex; align-items: center; justify-content: space-between; border-top: 1px solid rgba(148,163,184,0.08); padding-top: 14px; }
.legal { display: flex; gap: 10px; list-style: none; }
.muted { color: var(--color-muted); }

/* Buttons */
.btn { --b: var(--color-primary); display: inline-flex; align-items: center; justify-content: center; gap: 8px; text-decoration: none; border-radius: 12px; padding: 12px 16px; font-weight: 600; border: 1px solid transparent; cursor: pointer; transition: all .2s var(--ease); }
.btn-primary { background: linear-gradient(180deg, var(--color-primary), var(--color-primary-700)); color: white; box-shadow: 0 8px 30px rgba(79,70,229,.45), inset 0 0 0 1px rgba(255,255,255,.08); }
.btn-primary:hover { filter: brightness(1.05); transform: translateY(-1px); }
.btn-ghost { color: var(--color-text); background: rgba(148,163,184,0.08); border-color: rgba(148,163,184,0.14); }
.btn-ghost:hover { background: rgba(148,163,184,0.14); }
.btn-outline { color: white; border-color: rgba(148,163,184,0.24); background: transparent; }
.btn-outline:hover { border-color: rgba(255,255,255,0.5); background: rgba(148,163,184,0.06); }
[data-theme="light"] .btn-outline { color: var(--color-text); border-color: rgba(2,6,23,0.14); }
[data-theme="light"] .btn-outline:hover { border-color: rgba(2,6,23,0.35); background: rgba(2,6,23,0.04); }

/* Utilities */
.prose { line-height: 1.85; color: var(--color-text); }
.prose p { color: var(--color-muted); margin: 10px 0; }
.prose h2 { margin-top: 12px; }

/* Responsive */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-media { order: -1; }
}

@media (max-width: 860px) {
  .grid.three { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cta-inner { grid-template-columns: 1fr; }
  .section-block, .section-block.reverse { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .nav-menu { position: absolute; right: 16px; top: 68px; background: var(--color-elev); border: 1px solid rgba(148,163,184,0.12); border-radius: 12px; padding: 10px; box-shadow: var(--shadow-md); display: none; flex-direction: column; min-width: 200px; }
  .nav-menu.open { display: flex; }
  .nav-cta { display: none; }
  .grid.two { grid-template-columns: 1fr; }
  .grid.three { grid-template-columns: 1fr; }
  .logo-row { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .form-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 10px; }
}

/* Testimonials */
.testimonials { padding: 26px 0; }
.quotes { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px; }
.quote { display: grid; gap: 10px; }
.quote .stars { color: #fbbf24; }
.quote .author { display: flex; align-items: center; gap: 10px; }
.author .avatar { width: 36px; height: 36px; }

/* Use cases */
.use-cases { padding: 30px 0; }
.badge { display: inline-flex; padding: 6px 10px; border: 1px solid rgba(148,163,184,0.14); border-radius: 999px; font-size: 12px; color: var(--color-muted); }
[data-theme="light"] .badge { border-color: rgba(2,6,23,0.12); }

/* Comparison table */
.comparison { margin-top: 20px; overflow-x: auto; }
.comparison table { width: 100%; border-collapse: collapse; }
.comparison th, .comparison td { padding: 12px 10px; text-align: left; border-bottom: 1px solid rgba(148,163,184,0.12); }
.comparison th { color: var(--color-muted); font-weight: 600; }
.comparison td { color: var(--color-text); }
.check { color: var(--color-success); font-weight: 700; }

/* How it works */
.steps { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px; margin-top: 10px; }
.step { position: relative; padding-left: 16px; }
.step::before { content: attr(data-step); position: absolute; left: 0; top: 0; width: 22px; height: 22px; display: grid; place-items: center; border-radius: 999px; background: rgba(99,102,241,.25); font-weight: 700; }

/* Back to top */
#backToTop { position: fixed; right: 18px; bottom: 18px; opacity: 0; pointer-events: none; transform: translateY(10px); transition: all .2s var(--ease); }
#backToTop.show { opacity: 1; transform: translateY(0); pointer-events: auto; }