/* ========================================
   data2.solutions — Apple-inspired Design
   ======================================== */

:root {
  --black: #000000;
  --bg: #000000;
  --bg-1: #0a0a0a;
  --bg-2: #111111;
  --bg-3: #1a1a1a;
  --border: rgba(255,255,255,0.08);
  --border-hover: rgba(255,255,255,0.18);
  --accent: #0071e3;
  --accent-light: #2997ff;
  --accent-glow: rgba(0,113,227,0.2);
  --white: #f5f5f7;
  --gray-1: #a1a1a6;
  --gray-2: #6e6e73;
  --gray-3: #3a3a3c;
  --success: #30d158;
  --font: -apple-system, 'SF Pro Display', 'Inter', system-ui, sans-serif;
  --font-text: -apple-system, 'SF Pro Text', 'Inter', system-ui, sans-serif;
  --font-mono: 'SF Mono', 'JetBrains Mono', monospace;
  --radius: 18px;
  --radius-sm: 12px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font-text);
  background: var(--bg);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── Typography ── */
h1, h2, h3, h4 {
  font-family: var(--font);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--white);
}
h1 { font-size: clamp(2.8rem, 7vw, 5.5rem); }
h2 { font-size: clamp(2rem, 4.5vw, 3.5rem); }
h3 { font-size: 1.25rem; font-weight: 600; }
p { color: var(--gray-1); font-size: 1.05rem; line-height: 1.65; }

.gradient-text {
  background: linear-gradient(135deg, #2997ff 0%, #a78bfa 50%, #ec4899 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Layout ── */
.container { max-width: 1080px; margin: 0 auto; padding: 0 2rem; }
section { padding: 7rem 0; }

/* ── Nav ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 52px;
  display: flex;
  align-items: center;
  transition: background 0.4s, backdrop-filter 0.4s;
}
nav.scrolled {
  background: rgba(0,0,0,0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 0.5px solid var(--border);
}
.nav-inner {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
}
.nav-logo {
  font-family: var(--font);
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--white);
  letter-spacing: -0.03em;
}
.nav-logo span { color: var(--accent-light); }
.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}
.nav-links a {
  text-decoration: none;
  color: var(--gray-1);
  font-size: 0.8rem;
  font-weight: 400;
  transition: color 0.2s;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--white); }
.nav-cta { display: flex; align-items: center; gap: 0.75rem; }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.hamburger span { display: block; width: 20px; height: 1.5px; background: var(--gray-1); border-radius: 2px; transition: 0.3s; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1.25rem;
  border-radius: 980px;
  font-size: 0.88rem;
  font-weight: 400;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.25s;
  white-space: nowrap;
  font-family: var(--font-text);
}
.btn-primary {
  background: var(--accent-light);
  color: #fff;
}
.btn-primary:hover { background: #0077ed; transform: scale(1.02); }
.btn-ghost {
  background: transparent;
  color: var(--accent-light);
  padding-left: 0; padding-right: 0;
}
.btn-ghost:hover { color: #fff; }
.btn-ghost::after { content: ' →'; }
.btn-outline {
  background: rgba(255,255,255,0.06);
  color: var(--white);
  border: 0.5px solid var(--border-hover);
  backdrop-filter: blur(10px);
}
.btn-outline:hover { background: rgba(255,255,255,0.1); }
.btn-lg { padding: 0.75rem 1.75rem; font-size: 1rem; }
.btn-nav { font-size: 0.78rem; padding: 0.4rem 1rem; }

/* ── Hero ── */
#hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 2rem 4rem;
  position: relative;
  overflow: hidden;
}
.hero-bg-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 40% at 50% 20%, rgba(0,113,227,0.12) 0%, transparent 60%),
    radial-gradient(ellipse 40% 30% at 80% 70%, rgba(167,139,250,0.06) 0%, transparent 50%);
  pointer-events: none;
}
.hero-eyebrow {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--accent-light);
  letter-spacing: 0.01em;
  margin-bottom: 1.25rem;
}
#hero h1 {
  font-size: clamp(3rem, 8vw, 6.5rem);
  font-weight: 700;
  margin-bottom: 1.25rem;
  max-width: 900px;
}
#hero > p {
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: var(--gray-1);
  max-width: 540px;
  margin: 0 auto 2.5rem;
}
.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}
.hero-divider {
  width: 100%;
  max-width: 900px;
  height: 0.5px;
  background: var(--border);
  margin: 5rem auto 0;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  max-width: 680px;
  margin: 0 auto;
  width: 100%;
}
.stat-item {
  padding: 2rem 1rem;
  text-align: center;
  border-right: 0.5px solid var(--border);
}
.stat-item:last-child { border-right: none; }
.stat-value {
  font-family: var(--font);
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--white);
}
.stat-label { font-size: 0.78rem; color: var(--gray-2); margin-top: 0.3rem; }

/* ── Demo ── */
.demo-section {
  padding: 0 0 7rem;
  overflow: hidden;
}
.demo-wrapper {
  max-width: 860px;
  margin: 0 auto;
  border-radius: var(--radius);
  border: 0.5px solid var(--border);
  overflow: hidden;
  background: var(--bg-1);
  box-shadow: 0 40px 80px rgba(0,0,0,0.6), 0 0 0 0.5px rgba(255,255,255,0.05);
}
.demo-titlebar {
  background: var(--bg-2);
  padding: 0.9rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  border-bottom: 0.5px solid var(--border);
}
.demo-dot { width: 12px; height: 12px; border-radius: 50%; }
.demo-dot.red { background: #ff5f57; }
.demo-dot.yellow { background: #ffbd2e; }
.demo-dot.green { background: #28c840; }
.demo-url {
  flex: 1;
  text-align: center;
  font-size: 0.75rem;
  color: var(--gray-2);
  background: var(--bg-3);
  border-radius: 6px;
  padding: 0.25rem 1rem;
  margin: 0 1rem;
  font-family: var(--font-mono);
}
.demo-tabs {
  display: flex;
  background: var(--bg-1);
  border-bottom: 0.5px solid var(--border);
  padding: 0 1.5rem;
  gap: 0.5rem;
}
.demo-tab {
  padding: 0.75rem 1rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--gray-2);
  cursor: pointer;
  border-bottom: 1.5px solid transparent;
  transition: all 0.2s;
}
.demo-tab.active { color: var(--accent-light); border-bottom-color: var(--accent-light); }
.demo-body { display: none; }
.demo-body.active { display: block; }
.demo-screen {
  background: #050505;
  padding: 2rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  min-height: 280px;
}
.demo-line { display: flex; gap: 1rem; margin-bottom: 0.75rem; line-height: 1.7; align-items: flex-start; }
.demo-prompt { color: var(--gray-2); flex-shrink: 0; font-size: 0.75rem; margin-top: 0.15rem; }
.demo-user { color: var(--white); }
.demo-response { color: #30d158; }
.demo-table { margin: 0.5rem 0 0.5rem 0; border-collapse: collapse; font-size: 0.8rem; width: 100%; }
.demo-table th { color: var(--accent-light); border-bottom: 0.5px solid var(--border); padding: 0.3rem 1.5rem 0.3rem 0; text-align: left; font-weight: 500; }
.demo-table td { color: var(--gray-1); padding: 0.25rem 1.5rem 0.25rem 0; }
.demo-cursor { display: inline-block; width: 2px; height: 14px; background: var(--accent-light); animation: blink 1s step-end infinite; vertical-align: middle; margin-left: 1px; border-radius: 1px; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

/* ── Section Label ── */
.section-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-bottom: 0.75rem;
}
.section-header { text-align: center; margin-bottom: 4rem; }
.section-header h2 { margin-bottom: 1rem; }
.section-header p { max-width: 480px; margin: 0 auto; font-size: 1.05rem; }

/* ── Problem ── */
#problem {
  background: var(--bg-1);
  border-top: 0.5px solid var(--border);
  border-bottom: 0.5px solid var(--border);
}
.problem-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--border); border-radius: var(--radius); overflow: hidden; }
.problem-card {
  background: var(--bg-1);
  padding: 2.5rem 2rem;
  transition: background 0.3s;
}
.problem-card:hover { background: var(--bg-2); }
.problem-icon { font-size: 2rem; margin-bottom: 1.25rem; display: block; }
.problem-card h3 { font-size: 1rem; margin-bottom: 0.6rem; color: var(--white); font-weight: 600; }
.problem-card p { font-size: 0.9rem; color: var(--gray-1); line-height: 1.6; }

/* ── Services ── */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.service-card {
  background: var(--bg-1);
  border: 0.5px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  transition: all 0.35s;
  position: relative;
  overflow: hidden;
}
.service-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  background: radial-gradient(ellipse at top left, rgba(41,151,255,0.06) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.35s;
}
.service-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.service-card:hover::after { opacity: 1; }
.service-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: var(--bg-3);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.5rem;
}
.service-card h3 { margin-bottom: 0.75rem; font-size: 1.15rem; }
.service-card > p { font-size: 0.9rem; margin-bottom: 1.5rem; color: var(--gray-1); }
.service-features { list-style: none; }
.service-features li {
  font-size: 0.85rem;
  color: var(--gray-2);
  padding: 0.35rem 0;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  border-bottom: 0.5px solid var(--border);
}
.service-features li:last-child { border-bottom: none; }
.service-features li::before { content: ''; width: 4px; height: 4px; border-radius: 50%; background: var(--accent-light); flex-shrink: 0; }

/* ── How It Works ── */
#how-it-works {
  background: var(--bg-1);
  border-top: 0.5px solid var(--border);
  border-bottom: 0.5px solid var(--border);
}
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.step {
  padding: 2.5rem 1.5rem;
  border-right: 0.5px solid var(--border);
  position: relative;
}
.step:last-child { border-right: none; }
.step-number {
  font-family: var(--font);
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--bg-3);
  line-height: 1;
  margin-bottom: 1.25rem;
  -webkit-text-stroke: 1px var(--gray-3);
}
.step h3 { font-size: 0.95rem; margin-bottom: 0.6rem; color: var(--white); }
.step p { font-size: 0.85rem; color: var(--gray-2); line-height: 1.6; }

/* ── Results ── */
.results-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.result-card {
  background: var(--bg-1);
  border: 0.5px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  transition: border-color 0.3s;
}
.result-card:hover { border-color: var(--border-hover); }
.result-value {
  font-family: var(--font);
  font-size: 3.5rem;
  font-weight: 700;
  letter-spacing: -0.05em;
  background: linear-gradient(135deg, #2997ff, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 0.25rem;
}
.result-unit { font-size: 0.78rem; color: var(--gray-2); margin-bottom: 1.25rem; }
.result-content h3 { font-size: 1rem; margin-bottom: 0.5rem; color: var(--white); }
.result-content p { font-size: 0.88rem; color: var(--gray-1); }
.result-industry {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.72rem;
  font-weight: 500;
  padding: 0.2rem 0.7rem;
  border-radius: 980px;
  background: rgba(41,151,255,0.08);
  border: 0.5px solid rgba(41,151,255,0.2);
  color: var(--accent-light);
}

/* ── Pricing ── */
#pricing {
  background: var(--bg-1);
  border-top: 0.5px solid var(--border);
  border-bottom: 0.5px solid var(--border);
}
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; align-items: start; }
.pricing-card {
  background: var(--bg-2);
  border: 0.5px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  position: relative;
}
.pricing-card.featured {
  background: #001d3d;
  border-color: rgba(41,151,255,0.3);
  box-shadow: 0 0 0 0.5px rgba(41,151,255,0.15), 0 30px 60px rgba(0,113,227,0.1);
}
.featured-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-light);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.25rem 1rem;
  border-radius: 980px;
  white-space: nowrap;
  letter-spacing: 0.02em;
}
.pricing-name {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gray-2);
  margin-bottom: 0.75rem;
}
.pricing-price {
  font-family: var(--font);
  font-size: 2.8rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--white);
  line-height: 1;
  margin-bottom: 0.3rem;
}
.pricing-price span { font-size: 1rem; font-weight: 400; color: var(--gray-2); }
.pricing-desc { font-size: 0.88rem; color: var(--gray-1); margin: 0.75rem 0 1.5rem; min-height: 2.4rem; }
.pricing-divider { height: 0.5px; background: var(--border); margin-bottom: 1.5rem; }
.pricing-features { list-style: none; margin-bottom: 2rem; }
.pricing-features li {
  font-size: 0.85rem;
  color: var(--gray-1);
  padding: 0.5rem 0;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  border-bottom: 0.5px solid var(--border);
}
.pricing-features li:last-child { border-bottom: none; }
.pricing-features li .check { color: var(--success); font-weight: 600; font-size: 0.9rem; }
.pricing-features li .minus { color: var(--gray-3); }
.pricing-card .btn { width: 100%; justify-content: center; }

/* ── Book ── */
#book { text-align: center; position: relative; overflow: hidden; }
#book::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 50% at 50% 50%, rgba(0,113,227,0.07) 0%, transparent 70%);
  pointer-events: none;
}
.book-inner { max-width: 580px; margin: 0 auto; position: relative; }
.book-inner h2 { margin-bottom: 1rem; }
.book-inner > p { font-size: 1.05rem; margin-bottom: 3rem; }
.cal-card {
  background: var(--bg-1);
  border: 0.5px solid var(--border);
  border-radius: var(--radius);
  padding: 3rem 2.5rem;
  margin-bottom: 2rem;
}
.cal-card-icon { font-size: 2.5rem; margin-bottom: 1rem; }
.cal-card h3 { font-size: 1.15rem; margin-bottom: 0.5rem; color: var(--white); }
.cal-card p { font-size: 0.9rem; margin-bottom: 0.5rem; }
.cal-card a.email-link {
  color: var(--accent-light);
  font-weight: 500;
  text-decoration: none;
  font-size: 1.05rem;
}
.cal-card a.email-link:hover { text-decoration: underline; }
.cal-card .btn { margin-top: 1.5rem; }
.trust-items {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}
.trust-item {
  font-size: 0.82rem;
  color: var(--gray-2);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.trust-item .icon { color: var(--success); }

/* ── Footer ── */
footer {
  background: var(--bg-1);
  border-top: 0.5px solid var(--border);
  padding: 2.5rem 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-logo { font-family: var(--font); font-size: 1rem; font-weight: 700; color: var(--white); text-decoration: none; letter-spacing: -0.03em; }
.footer-logo span { color: var(--accent-light); }
.footer-links { display: flex; gap: 2rem; list-style: none; flex-wrap: wrap; }
.footer-links a { font-size: 0.8rem; color: var(--gray-2); text-decoration: none; transition: color 0.2s; }
.footer-links a:hover { color: var(--white); }
.footer-copy { font-size: 0.78rem; color: var(--gray-2); }

/* ── Mobile Nav ── */
.mobile-nav {
  display: none;
  position: fixed;
  top: 52px; left: 0; right: 0;
  background: rgba(0,0,0,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 0.5px solid var(--border);
  padding: 1.25rem 2rem;
  z-index: 99;
  flex-direction: column;
  gap: 0.25rem;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  color: var(--gray-1);
  text-decoration: none;
  font-size: 1rem;
  padding: 0.65rem 0;
  border-bottom: 0.5px solid var(--border);
  transition: color 0.2s;
}
.mobile-nav a:last-child { border-bottom: none; }
.mobile-nav a:hover { color: var(--white); }

/* ── Scroll animations ── */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1), transform 0.7s cubic-bezier(0.16,1,0.3,1);
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ── Responsive ── */
@media (max-width: 900px) {
  .services-grid, .pricing-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .step { border-right: none; border-bottom: 0.5px solid var(--border); }
  .step:nth-child(odd) { border-right: 0.5px solid var(--border); }
  .step:nth-last-child(-n+2) { border-bottom: none; }
  .results-grid { grid-template-columns: 1fr; }
  .problem-grid { grid-template-columns: 1fr; gap: 1px; }
}

@media (max-width: 680px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .nav-book-btn { font-size: 0.76rem; padding: 0.38rem 0.85rem; }

  section { padding: 4rem 0; }
  .container { padding: 0 1.25rem; }

  #hero { padding: 5rem 1.25rem 3rem; }
  #hero h1 { font-size: 2.6rem; letter-spacing: -0.03em; }
  #hero > p { font-size: 0.95rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
  .hero-divider { margin-top: 3rem; }
  .stat-value { font-size: 1.6rem; }
  .stat-item { padding: 1.5rem 0.5rem; }
  .stat-label { font-size: 0.7rem; }

  .section-header { margin-bottom: 2.5rem; }
  h2 { font-size: 1.8rem; }

  .demo-wrapper { border-radius: var(--radius-sm); }
  .demo-screen { font-size: 0.72rem; padding: 1.25rem; min-height: 220px; }
  .demo-url { display: none; }

  .steps { grid-template-columns: 1fr; }
  .step { border-right: none; border-bottom: 0.5px solid var(--border); padding: 2rem 1.25rem; }
  .step:last-child { border-bottom: none; }
  .step-number { font-size: 2rem; }

  .result-card { padding: 1.75rem; }
  .result-value { font-size: 2.5rem; }

  .pricing-card.featured { margin-top: 0.5rem; }

  .cal-card { padding: 2rem 1.5rem; }
  .trust-items { flex-direction: column; align-items: center; gap: 0.75rem; }

  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-links { gap: 1.25rem; }
}