:root {
  --background: 220 42% 97%;
  --foreground: 224 44% 9%;
  --primary: 190 100% 45%;
  --primary-foreground: 220 45% 6%;
  --secondary: 265 95% 66%;
  --secondary-foreground: 0 0% 100%;
  --muted: 220 18% 46%;
  --destructive: 354 90% 60%;
  --border: 220 24% 82%;
  --card: 0 0% 100%;
  --teal: 166 100% 55%;
  --purple: 265 100% 70%;
  --glass: 0 0% 100% / 0.56;
  --glass-strong: 0 0% 100% / 0.74;
  --shadow-sm: 0 8px 24px hsl(220 55% 8% / 0.08);
  --shadow-md: 0 18px 52px hsl(220 55% 8% / 0.14);
  --shadow-lg: 0 32px 100px hsl(220 55% 8% / 0.22);
  --transition-fast: 160ms cubic-bezier(.2,.8,.2,1);
  --transition-smooth: 520ms cubic-bezier(.16,1,.3,1);
  --radius-sm: 14px;
  --radius-md: 24px;
  --radius-lg: 36px;
}

.dark {
  --background: 226 48% 6%;
  --foreground: 210 35% 96%;
  --primary: 190 100% 58%;
  --primary-foreground: 225 50% 7%;
  --secondary: 270 100% 72%;
  --secondary-foreground: 225 50% 7%;
  --muted: 220 16% 70%;
  --destructive: 354 90% 66%;
  --border: 220 40% 24%;
  --card: 225 45% 10%;
  --glass: 225 44% 12% / 0.54;
  --glass-strong: 225 44% 14% / 0.76;
  --shadow-sm: 0 8px 24px hsl(190 100% 50% / 0.08);
  --shadow-md: 0 18px 52px hsl(220 90% 2% / 0.36);
  --shadow-lg: 0 32px 100px hsl(220 90% 2% / 0.58);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: hsl(var(--foreground));
  background: hsl(var(--background));
  overflow-x: hidden;
  transition: background var(--transition-smooth), color var(--transition-smooth);
}
body::selection { background: hsl(var(--primary) / 0.3); }
a { color: inherit; text-decoration: none; }
button { font: inherit; }

.ambient-bg {
  position: fixed;
  inset: 0;
  z-index: -3;
  overflow: hidden;
  background:
    radial-gradient(circle at 20% 15%, hsl(var(--primary) / 0.22), transparent 30%),
    radial-gradient(circle at 82% 22%, hsl(var(--secondary) / 0.24), transparent 32%),
    linear-gradient(135deg, hsl(var(--background)), hsl(var(--background)), hsl(var(--primary) / 0.08));
  animation: bgShift 14s ease-in-out infinite alternate;
}
.orb {
  position: absolute;
  width: 34rem;
  height: 34rem;
  border-radius: 999px;
  filter: blur(28px);
  opacity: 0.34;
  transform: translate3d(0,0,0);
}
.orb-one { background: hsl(var(--primary)); left: -12rem; top: 8rem; animation: floatOrb 16s ease-in-out infinite; }
.orb-two { background: hsl(var(--secondary)); right: -14rem; top: 18rem; animation: floatOrb 19s ease-in-out infinite reverse; }
.orb-three { background: hsl(var(--teal)); left: 45%; bottom: -18rem; animation: floatOrb 22s ease-in-out infinite; }
.grid-glow {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(hsl(var(--border) / 0.18) 1px, transparent 1px), linear-gradient(90deg, hsl(var(--border) / 0.18) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: radial-gradient(circle at center, black, transparent 78%);
}

.site-header {
  position: fixed;
  top: 16px;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  justify-content: center;
  pointer-events: none;
}
.nav-island {
  pointer-events: auto;
  width: min(92vw, 760px);
  min-height: 62px;
  padding: 9px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border: 1px solid hsl(var(--border) / 0.54);
  border-radius: 999px;
  background: hsl(var(--glass));
  backdrop-filter: blur(24px) saturate(160%);
  box-shadow: var(--shadow-md), inset 0 1px 0 hsl(0 0% 100% / 0.24);
  transition: width var(--transition-smooth), transform var(--transition-smooth), background var(--transition-smooth);
}
.site-header.scrolled .nav-island, .nav-island:hover { width: min(94vw, 900px); transform: translateY(2px); background: hsl(var(--glass-strong)); }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 900; letter-spacing: -0.04em; }
.brand-mark {
  width: 42px; height: 42px; border-radius: 50%; display: grid; place-items: center;
  color: hsl(var(--primary-foreground));
  background: linear-gradient(135deg, hsl(var(--primary)), hsl(var(--teal)), hsl(var(--secondary)));
  box-shadow: 0 0 28px hsl(var(--primary) / 0.42);
}
.nav-links { display: flex; gap: 4px; align-items: center; }
.nav-link {
  padding: 12px 15px;
  border-radius: 999px;
  color: hsl(var(--muted));
  font-size: 0.9rem;
  font-weight: 700;
  transition: var(--transition-fast);
}
.nav-link:hover, .nav-link.active { color: hsl(var(--foreground)); background: hsl(var(--primary) / 0.13); box-shadow: inset 0 0 0 1px hsl(var(--primary) / 0.2); }
.theme-toggle { border: 0; background: transparent; padding: 0; cursor: pointer; }
.toggle-track { display: block; width: 58px; height: 36px; padding: 4px; border-radius: 999px; background: hsl(var(--foreground) / 0.1); border: 1px solid hsl(var(--border) / 0.7); }
.toggle-thumb { width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; background: hsl(var(--card)); box-shadow: var(--shadow-sm); transition: transform var(--transition-smooth); position: relative; overflow: hidden; }
.dark .toggle-thumb { transform: translateX(22px); }
.sun-icon, .moon-icon { position: absolute; font-size: 14px; transition: opacity var(--transition-fast), transform var(--transition-fast); }
.moon-icon { opacity: 0; transform: translateY(16px); }
.dark .sun-icon { opacity: 0; transform: translateY(-16px); }
.dark .moon-icon { opacity: 1; transform: translateY(0); }

.section { width: min(1180px, calc(100% - 32px)); margin: 0 auto; padding: 112px 0; }
.hero { min-height: 100vh; display: grid; grid-template-columns: 1fr; gap: 64px; align-items: center; padding-top: 150px; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; color: hsl(var(--primary)); font-weight: 800; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.12em; }
.pulse-dot { width: 9px; height: 9px; background: hsl(var(--teal)); border-radius: 50%; box-shadow: 0 0 0 8px hsl(var(--teal) / 0.12); animation: pulse 1.8s infinite; }
h1, h2, h3, h4, p { margin-top: 0; }
h1 { font-size: clamp(3rem, 12vw, 7.5rem); line-height: 0.88; letter-spacing: -0.09em; margin-bottom: 24px; max-width: 920px; }
h2 { font-size: clamp(2.1rem, 7vw, 4.6rem); line-height: 0.95; letter-spacing: -0.075em; margin-bottom: 16px; }
.hero-text, .section-heading p, .security-card p { color: hsl(var(--muted)); font-size: clamp(1rem, 2vw, 1.18rem); line-height: 1.75; max-width: 680px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 34px 0; }
.btn { position: relative; display: inline-flex; align-items: center; justify-content: center; min-height: 54px; padding: 0 24px; border-radius: 999px; font-weight: 900; overflow: hidden; transition: transform var(--transition-fast), box-shadow var(--transition-fast); }
.btn:hover { transform: translateY(-3px) scale(1.015); }
.btn-primary { color: hsl(var(--primary-foreground)); background: linear-gradient(135deg, hsl(var(--primary)), hsl(var(--teal))); box-shadow: 0 0 36px hsl(var(--primary) / 0.35); }
.btn-secondary { color: hsl(var(--foreground)); background: hsl(var(--glass)); border: 1px solid hsl(var(--border) / 0.7); backdrop-filter: blur(18px); }
.trust-row { display: flex; flex-wrap: wrap; gap: 18px; }
.trust-row div { padding: 14px 18px; min-width: 132px; border: 1px solid hsl(var(--border) / 0.5); border-radius: var(--radius-sm); background: hsl(var(--glass)); backdrop-filter: blur(16px); }
.trust-row strong { font-size: 1.45rem; }
.trust-row small { display: block; color: hsl(var(--muted)); margin-top: 4px; }

.hero-visual { perspective: 1200px; }
.phone-stage { position: relative; min-height: 640px; display: grid; place-items: center; transform-style: preserve-3d; }
.phone-shell { width: min(330px, 78vw); height: 640px; border-radius: 52px; padding: 14px; background: linear-gradient(145deg, hsl(var(--foreground) / 0.16), hsl(var(--card) / 0.36)); border: 1px solid hsl(var(--border) / 0.7); box-shadow: var(--shadow-lg); transform: rotateX(8deg) rotateY(-12deg); position: relative; transform-style: preserve-3d; }
.phone-glow { position: absolute; inset: -22px; border-radius: 64px; background: linear-gradient(135deg, hsl(var(--primary) / 0.22), hsl(var(--secondary) / 0.2)); filter: blur(26px); z-index: -1; }
.phone-screen { height: 100%; border-radius: 40px; padding: 22px; background: linear-gradient(180deg, hsl(var(--card) / 0.82), hsl(var(--background) / 0.72)); backdrop-filter: blur(20px); border: 1px solid hsl(var(--border) / 0.4); overflow: hidden; }
.status-bar { display: flex; justify-content: space-between; font-size: 0.78rem; font-weight: 800; margin-bottom: 24px; }
.app-card, .floating-chip, .feature-card, .dashboard-panel, .security-card { border: 1px solid hsl(var(--border) / 0.58); background: hsl(var(--glass)); backdrop-filter: blur(24px) saturate(150%); box-shadow: var(--shadow-md), inset 0 1px 0 hsl(0 0% 100% / 0.18); }
.main-balance-card { border-radius: 30px; padding: 24px; background: linear-gradient(135deg, hsl(var(--primary) / 0.9), hsl(var(--secondary) / 0.78)); color: white; }
.main-balance-card strong { display: block; font-size: 2.3rem; letter-spacing: -0.06em; margin-top: 16px; }
.card-lines { display: flex; gap: 8px; margin-top: 28px; }
.card-lines i { height: 7px; border-radius: 99px; background: white; opacity: 0.42; flex: 1; }
.quick-actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 18px 0; }
.quick-actions button { border: 0; border-radius: 16px; padding: 13px 0; color: hsl(var(--foreground)); background: hsl(var(--foreground) / 0.08); font-weight: 800; }
.mini-chart { height: 158px; display: flex; align-items: end; gap: 12px; padding: 18px 8px; }
.mini-chart span { flex: 1; border-radius: 999px 999px 8px 8px; background: linear-gradient(180deg, hsl(var(--teal)), hsl(var(--primary) / 0.28)); animation: barFloat 3s ease-in-out infinite alternate; }
.floating-chip { position: absolute; width: 210px; border-radius: 24px; padding: 18px; transform-style: preserve-3d; animation: floatUi 5s ease-in-out infinite; }
.floating-chip span, .floating-chip small { display: block; color: hsl(var(--muted)); font-size: 0.82rem; }
.floating-chip strong { display: block; font-size: 1.55rem; margin: 8px 0 4px; letter-spacing: -0.04em; }
.chip-balance { top: 44px; left: 0; transform: translateZ(80px); }
.chip-savings { right: 0; bottom: 92px; transform: translateZ(110px); animation-delay: -1s; }
.chip-invest { left: 20px; bottom: 28px; transform: translateZ(60px); animation-delay: -2s; }

.section-heading { text-align: center; max-width: 760px; margin: 0 auto 42px; }
.section-heading p { margin-left: auto; margin-right: auto; }
.feature-grid { display: grid; grid-template-columns: 1fr; gap: 18px; perspective: 1200px; }
.feature-card { position: relative; border-radius: var(--radius-md); padding: 30px; min-height: 260px; transition: transform var(--transition-smooth), border-color var(--transition-fast), box-shadow var(--transition-fast); overflow: hidden; transform-style: preserve-3d; }
.feature-card::before { content: ""; position: absolute; inset: -1px; border-radius: inherit; background: linear-gradient(135deg, hsl(var(--primary) / 0.32), transparent, hsl(var(--secondary) / 0.32)); opacity: 0; transition: opacity var(--transition-fast); pointer-events: none; }
.feature-card:hover::before { opacity: 1; }
.feature-icon { width: 58px; height: 58px; border-radius: 20px; display: grid; place-items: center; margin-bottom: 26px; color: hsl(var(--primary)); background: hsl(var(--primary) / 0.12); border: 1px solid hsl(var(--primary) / 0.22); font-size: 1.6rem; box-shadow: 0 0 30px hsl(var(--primary) / 0.18); }
.feature-card h3 { font-size: 1.4rem; letter-spacing: -0.04em; }
.feature-card p { color: hsl(var(--muted)); line-height: 1.7; }

.dashboard-panel { border-radius: var(--radius-lg); padding: 18px; transform-style: preserve-3d; }
.dashboard-topbar, .chart-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.panel-label { color: hsl(var(--primary)); font-weight: 900; font-size: 0.76rem; letter-spacing: 0.12em; text-transform: uppercase; }
.dashboard-topbar h3, .chart-header h4 { margin: 4px 0 0; letter-spacing: -0.04em; }
.sync-pill { display: none; align-items: center; gap: 8px; color: hsl(var(--muted)); background: hsl(var(--foreground) / 0.06); border-radius: 999px; padding: 10px 14px; font-weight: 700; font-size: 0.84rem; }
.sync-pill span { width: 8px; height: 8px; border-radius: 50%; background: hsl(var(--teal)); box-shadow: 0 0 12px hsl(var(--teal)); }
.overview-grid { display: grid; grid-template-columns: 1fr; gap: 14px; }
.overview-card, .chart-card, .transactions-card { border-radius: 24px; padding: 20px; background: hsl(var(--foreground) / 0.055); border: 1px solid hsl(var(--border) / 0.45); }
.overview-card strong { display: block; font-size: 1.7rem; margin: 8px 0; letter-spacing: -0.05em; }
.overview-card small, .overview-card span { color: hsl(var(--muted)); }
.accent-teal { background: linear-gradient(135deg, hsl(var(--teal) / 0.13), hsl(var(--foreground) / 0.04)); }
.accent-purple { background: linear-gradient(135deg, hsl(var(--secondary) / 0.14), hsl(var(--foreground) / 0.04)); }
.dashboard-content { display: grid; grid-template-columns: 1fr; gap: 14px; margin-top: 14px; }
.chart-header strong { color: hsl(var(--teal)); }
.line-chart svg { width: 100%; height: auto; display: block; }
.ghost-btn { border: 1px solid hsl(var(--border) / 0.55); color: hsl(var(--foreground)); background: hsl(var(--glass)); border-radius: 999px; padding: 9px 12px; cursor: pointer; }
.transaction-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.transaction-list li { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 12px; }
.tx-icon { width: 42px; height: 42px; border-radius: 15px; display: grid; place-items: center; background: hsl(var(--primary) / 0.12); }
.transaction-list strong { display: block; font-size: 0.94rem; }
.transaction-list small { color: hsl(var(--muted)); }
.transaction-list b { font-size: 0.9rem; }
.positive { color: hsl(var(--teal)); }

.security-card { border-radius: var(--radius-lg); padding: 34px; display: grid; gap: 24px; align-items: center; }

.reveal { opacity: 0; transform: translateY(26px); transition: opacity 700ms ease, transform 700ms cubic-bezier(.16,1,.3,1); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.tilt-card { will-change: transform; transition: transform var(--transition-smooth); }

@keyframes bgShift { from { filter: hue-rotate(0deg); } to { filter: hue-rotate(18deg); } }
@keyframes floatOrb { 0%,100% { transform: translate3d(0,0,0) scale(1); } 50% { transform: translate3d(54px,-38px,0) scale(1.08); } }
@keyframes floatUi { 0%,100% { margin-top: 0; } 50% { margin-top: -18px; } }
@keyframes pulse { 50% { box-shadow: 0 0 0 14px hsl(var(--teal) / 0); } }
@keyframes barFloat { to { transform: scaleY(0.88); opacity: 0.78; } }

@media (min-width: 720px) {
  .hero { grid-template-columns: 0.95fr 1.05fr; padding-top: 120px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .overview-grid { grid-template-columns: repeat(3, 1fr); }
  .dashboard-content { grid-template-columns: 1.1fr 0.9fr; }
  .sync-pill { display: inline-flex; }
  .security-card { grid-template-columns: 1fr auto; padding: 48px; }
}

@media (min-width: 1040px) {
  .feature-grid { grid-template-columns: repeat(4, 1fr); }
  .dashboard-panel { padding: 26px; }
}

@media (max-width: 719px) {
  .site-header { top: 10px; bottom: auto; }
  .nav-island { width: min(94vw, 430px); min-height: 66px; }
  .site-header.scrolled .nav-island, .nav-island:hover { width: min(94vw, 430px); }
  .brand-text { display: none; }
  .brand-mark { width: 40px; height: 40px; }
  .nav-link { font-size: 0; padding: 12px; width: 42px; height: 42px; display: grid; place-items: center; }
  .nav-link::first-letter { font-size: 0; }
  .nav-link[data-section="hero"]::after { content: "⌂"; font-size: 1rem; }
  .nav-link[data-section="features"]::after { content: "✦"; font-size: 1rem; }
  .nav-link[data-section="dashboard"]::after { content: "▣"; font-size: 1rem; }
  .nav-link[data-section="security"]::after { content: "◉"; font-size: 1rem; }
  .toggle-track { width: 50px; height: 34px; }
  .toggle-thumb { width: 26px; height: 26px; }
  .dark .toggle-thumb { transform: translateX(16px); }
  .section { padding: 78px 0; }
  .hero { padding-top: 118px; padding-bottom: 78px; }
  .phone-stage { min-height: 620px; }
  .chip-balance { left: -4px; top: 14px; }
  .chip-savings { right: -6px; bottom: 92px; }
  .chip-invest { left: 4px; bottom: 22px; }
  .floating-chip { width: 184px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 1ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: 1ms !important; }
}