:root {
  color-scheme: dark;

  --color-bg: #070a13;
  --color-surface: #101624;
  --color-surface-2: #151d2e;
  --color-surface-3: #1c263a;
  --color-text: #f8fafc;
  --color-text-muted: #a9b4c7;
  --color-border: rgba(255, 255, 255, 0.12);

  --color-primary: #5ee7ff;
  --color-primary-strong: #22b8e5;
  --color-secondary: #8f7cff;
  --color-accent: #ffd166;
  --color-success: #45e08f;
  --color-warning: #ffb84d;
  --color-danger: #ff5d73;

  --gradient-primary: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  --gradient-accent: linear-gradient(135deg, var(--color-accent), #fff0a6);
  --gradient-surface: linear-gradient(145deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.04));

  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: var(--font-sans);
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-md: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.35rem;
  --text-2xl: clamp(1.75rem, 7vw, 3rem);
  --text-3xl: clamp(2.25rem, 10vw, 4.5rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --radius-2xl: 1.75rem;
  --radius-full: 999px;

  --shadow-sm: 0 8px 24px rgba(0, 0, 0, 0.18);
  --shadow-md: 0 18px 50px rgba(0, 0, 0, 0.28);
  --shadow-lg: 0 30px 90px rgba(0, 0, 0, 0.38);
  --shadow-glow: 0 0 44px rgba(94, 231, 255, 0.22);

  --breakpoint-sm: 480px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;

  --transition-fast: 160ms ease;
  --transition-base: 260ms ease;
  --transition-slow: 600ms cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-md);
  line-height: 1.5;
  color: var(--color-text);
  background:
    radial-gradient(circle at 20% 10%, rgba(94, 231, 255, 0.12), transparent 28rem),
    radial-gradient(circle at 80% 0%, rgba(143, 124, 255, 0.13), transparent 26rem),
    var(--color-bg);
}

img,
picture,
svg,
video {
  display: block;
  max-width: 100%;
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

#app {
  width: min(1120px, 100%);
  min-height: 100vh;
  margin: 0 auto;
  padding: var(--space-6) var(--space-4);
}

.splash-screen,
.onboarding-placeholder {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: var(--space-6);
  transition: opacity var(--transition-slow), visibility var(--transition-slow), transform var(--transition-slow);
}

.splash-screen {
  z-index: 20;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 35%, rgba(94, 231, 255, 0.22), transparent 28rem),
    radial-gradient(circle at 20% 80%, rgba(143, 124, 255, 0.18), transparent 24rem),
    var(--color-bg);
}

.splash-screen.is-hidden {
  opacity: 0;
  visibility: hidden;
  transform: scale(1.02);
}

.particle-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.splash-content {
  position: relative;
  z-index: 1;
  display: grid;
  justify-items: center;
  gap: var(--space-4);
  text-align: center;
  animation: splashEnter 900ms var(--transition-slow) both;
}

.splash-logo {
  position: relative;
  width: clamp(8.5rem, 34vw, 15rem);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: 32%;
  background:
    var(--gradient-surface),
    linear-gradient(145deg, rgba(94, 231, 255, 0.22), rgba(143, 124, 255, 0.26));
  box-shadow: var(--shadow-glow), inset 0 0 48px rgba(255, 255, 255, 0.08);
  animation: logoFloat 2.8s ease-in-out infinite;
}

.splash-logo::before,
.splash-logo::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.splash-logo::before {
  inset: 11%;
  border: 2px solid rgba(94, 231, 255, 0.28);
  border-top-color: var(--color-accent);
  animation: rotateGlow 4s linear infinite;
}

.splash-logo::after {
  inset: -18%;
  background: radial-gradient(circle, rgba(94, 231, 255, 0.24), transparent 62%);
  filter: blur(16px);
  z-index: -1;
}

.splash-logo span {
  font-size: clamp(3.2rem, 12vw, 6.5rem);
  font-weight: 950;
  line-height: 1;
  text-shadow: 0 0 34px rgba(94, 231, 255, 0.56);
}

.splash-content h1 {
  margin: 0;
  font-size: var(--text-3xl);
  line-height: 0.98;
}

.splash-content p {
  margin: 0;
  color: var(--color-accent);
  font-size: clamp(1rem, 4vw, 1.35rem);
  font-weight: 900;
}

.splash-loader {
  position: absolute;
  z-index: 1;
  left: 50%;
  bottom: clamp(2rem, 8vh, 5rem);
  width: min(28rem, calc(100vw - 3rem));
  height: 0.65rem;
  overflow: hidden;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.12);
  box-shadow: inset 0 0 0 1px var(--color-border);
  transform: translateX(-50%);
}

.splash-loader span {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), var(--color-accent));
  transform-origin: left center;
  animation: loadingFill 3s ease forwards;
}

.onboarding-placeholder {
  z-index: 10;
  opacity: 0;
  visibility: hidden;
  transform: translateY(1rem);
  background:
    radial-gradient(circle at 70% 20%, rgba(94, 231, 255, 0.14), transparent 24rem),
    rgba(7, 10, 19, 0.94);
}

.onboarding-placeholder.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.section {
  display: grid;
  gap: var(--space-5);
  margin-block: var(--space-8);
}

.section-header {
  display: grid;
  gap: var(--space-2);
}

.eyebrow {
  margin: 0;
  color: var(--color-accent);
  font-size: var(--text-sm);
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  line-height: 0.98;
}

.subtitle {
  max-width: 46rem;
  margin: 0;
  color: var(--color-text-muted);
  font-size: var(--text-lg);
}

.grid {
  display: grid;
  gap: var(--space-4);
}

.grid-2,
.grid-3,
.grid-4 {
  grid-template-columns: 1fr;
}

.card {
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.card-elevated {
  background: var(--gradient-surface), var(--color-surface);
  box-shadow: var(--shadow-md);
}

.card-title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xl);
}

.card-text {
  margin: 0;
  color: var(--color-text-muted);
}

.glass {
  border: 1px solid var(--color-border);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.06)),
    rgba(10, 16, 30, 0.68);
  box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(18px);
}

.glass-soft {
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
}

.btn {
  min-height: 3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  border: 0;
  border-radius: var(--radius-md);
  padding: 0 var(--space-5);
  color: #06111f;
  background: var(--gradient-accent);
  font-weight: 900;
  text-decoration: none;
  box-shadow: 0 16px 34px rgba(255, 209, 102, 0.18);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 42px rgba(255, 209, 102, 0.24);
}

.btn:active {
  transform: translateY(0);
}

.btn-secondary {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: inset 0 0 0 1px var(--color-border);
}

.btn-primary {
  color: #041018;
  background: var(--gradient-primary);
}

.btn-ghost {
  color: var(--color-text);
  background: transparent;
  box-shadow: inset 0 0 0 1px var(--color-border);
}

.btn-sm {
  min-height: 2.35rem;
  padding-inline: var(--space-4);
  font-size: var(--text-sm);
}

.btn-lg {
  min-height: 3.5rem;
  padding-inline: var(--space-6);
  font-size: var(--text-lg);
}

.color-swatch {
  min-height: 7rem;
  display: grid;
  align-content: end;
  gap: var(--space-1);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  color: #06111f;
  font-weight: 900;
}

.swatch-primary {
  background: var(--color-primary);
}

.swatch-secondary {
  background: var(--color-secondary);
}

.swatch-accent {
  background: var(--color-accent);
}

.swatch-success {
  background: var(--color-success);
}

.token-list {
  display: grid;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.token-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text-muted);
}

.token-list code {
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.animate-fade-in {
  animation: fadeIn var(--transition-slow) both;
}

.animate-slide-up {
  animation: slideUp var(--transition-slow) both;
}

.animate-pop {
  animation: popIn 420ms ease both;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(1rem);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes popIn {
  from {
    opacity: 0;
    transform: scale(0.94);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes splashEnter {
  from {
    opacity: 0;
    transform: translateY(1rem) scale(0.96);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes logoFloat {
  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-0.6rem);
  }
}

@keyframes rotateGlow {
  to {
    transform: rotate(360deg);
  }
}

@keyframes loadingFill {
  from {
    transform: scaleX(0);
  }

  to {
    transform: scaleX(1);
  }
}

@media (min-width: 480px) {
  #app {
    padding-inline: var(--space-6);
  }

  .splash-screen,
  .onboarding-placeholder {
    padding: var(--space-8);
  }
}

@media (min-width: 768px) {
  #app {
    padding-block: var(--space-10);
  }

  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}