/* Neuroflow — design tokens & utilities (parity with React app) */

:root {
  --radius: 1.25rem;
  --background: oklch(0.983 0.011 300);
  --foreground: oklch(0.21 0.045 285);
  --card: oklch(1 0 0);
  --card-foreground: oklch(0.21 0.045 285);
  --popover: oklch(1 0 0);
  --popover-foreground: oklch(0.21 0.045 285);
  --primary: oklch(0.58 0.21 285);
  --primary-foreground: oklch(0.99 0.005 300);
  --secondary: oklch(0.955 0.018 300);
  --secondary-foreground: oklch(0.28 0.05 285);
  --muted: oklch(0.958 0.016 300);
  --muted-foreground: oklch(0.52 0.04 288);
  --accent: oklch(0.62 0.22 300);
  --accent-foreground: oklch(0.99 0.005 300);
  --cyan: oklch(0.78 0.13 45);
  --destructive: oklch(0.6 0.23 27);
  --destructive-foreground: oklch(0.99 0.005 300);
  --border: oklch(0.905 0.018 300);
  --input: oklch(0.925 0.018 300);
  --ring: oklch(0.58 0.21 285);
  --glass: oklch(1 0 0 / 55%);
  --glass-border: oklch(1 0 0 / 70%);

  --gradient-brand: linear-gradient(
    115deg,
    oklch(0.55 0.21 275),
    oklch(0.6 0.23 300) 52%,
    oklch(0.8 0.13 45)
  );
  --gradient-soft: radial-gradient(
      ellipse 80% 60% at 12% -5%,
      color-mix(in oklab, var(--accent) 20%, transparent),
      transparent 70%
    ),
    radial-gradient(
      ellipse 65% 55% at 92% 5%,
      color-mix(in oklab, var(--primary) 18%, transparent),
      transparent 70%
    ),
    radial-gradient(
      ellipse 80% 60% at 55% 105%,
      color-mix(in oklab, var(--cyan) 16%, transparent),
      transparent 72%
    );
  --shadow-glass: 0 1px 0 0 oklch(1 0 0 / 70%) inset,
    0 26px 60px -28px color-mix(in oklab, var(--primary) 26%, transparent);
  --shadow-float: 0 50px 100px -45px color-mix(in oklab, var(--accent) 38%, transparent);
  --shadow-glow: 0 0 0 1px color-mix(in oklab, var(--primary) 16%, transparent),
    0 20px 55px -20px color-mix(in oklab, var(--primary) 42%, transparent);

  --font-sans: "Plus Jakarta Sans", ui-sans-serif, system-ui, sans-serif;
  --font-display: "Sora", "Plus Jakarta Sans", ui-sans-serif, system-ui, sans-serif;
}

.dark {
  --background: oklch(0.17 0.038 288);
  --foreground: oklch(0.97 0.008 300);
  --card: oklch(0.225 0.042 288);
  --card-foreground: oklch(0.97 0.008 300);
  --popover: oklch(0.225 0.042 288);
  --popover-foreground: oklch(0.97 0.008 300);
  --primary: oklch(0.68 0.19 288);
  --primary-foreground: oklch(0.15 0.04 288);
  --secondary: oklch(0.28 0.05 288);
  --secondary-foreground: oklch(0.97 0.008 300);
  --muted: oklch(0.27 0.045 288);
  --muted-foreground: oklch(0.74 0.035 292);
  --accent: oklch(0.7 0.2 302);
  --accent-foreground: oklch(0.15 0.04 288);
  --cyan: oklch(0.82 0.13 48);
  --border: oklch(1 0 0 / 12%);
  --input: oklch(1 0 0 / 16%);
  --glass: oklch(0.26 0.045 288 / 55%);
  --glass-border: oklch(1 0 0 / 12%);
  --shadow-glass: 0 1px 0 0 oklch(1 0 0 / 8%) inset, 0 30px 70px -30px oklch(0 0 0 / 70%);
}

*,
*::before,
*::after {
  border-color: var(--border);
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--background);
  background-image: radial-gradient(
      ellipse 60% 40% at 10% 0%,
      color-mix(in oklab, var(--accent) 10%, transparent),
      transparent 70%
    ),
    radial-gradient(
      ellipse 50% 35% at 95% 8%,
      color-mix(in oklab, var(--primary) 9%, transparent),
      transparent 70%
    );
  background-attachment: fixed;
  color: var(--foreground);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
}

::selection {
  background: color-mix(in oklab, var(--primary) 30%, transparent);
}

/* Semantic color helpers for Tailwind CDN arbitrary usage */
.bg-background { background-color: var(--background); }
.bg-foreground { background-color: var(--foreground); }
.bg-card { background-color: var(--card); }
.bg-primary { background-color: var(--primary); }
.bg-secondary { background-color: var(--secondary); }
.bg-muted { background-color: var(--muted); }
.bg-accent { background-color: var(--accent); }
.bg-popover { background-color: var(--popover); }
.text-foreground { color: var(--foreground); }
.text-primary { color: var(--primary); }
.text-primary-foreground { color: var(--primary-foreground); }
.text-muted-foreground { color: var(--muted-foreground); }
.text-muted-foreground\/60 {
  color: color-mix(in oklab, var(--muted-foreground) 60%, transparent);
}
.text-foreground\/80 {
  color: color-mix(in oklab, var(--foreground) 80%, transparent);
}
.text-accent { color: var(--accent); }
.text-cyan { color: var(--cyan); }
.text-popover-foreground { color: var(--popover-foreground); }
.border-border { border-color: var(--border); }
.border-input { border-color: var(--input); }
.ring-primary\/60 { --tw-ring-color: color-mix(in oklab, var(--primary) 60%, transparent); }
.bg-primary\/40 { background-color: color-mix(in oklab, var(--primary) 40%, transparent); }
.bg-background\/40 { background-color: color-mix(in oklab, var(--background) 40%, transparent); }
.bg-secondary\/60 { background-color: color-mix(in oklab, var(--secondary) 60%, transparent); }
.hover\:bg-secondary\/60:hover { background-color: color-mix(in oklab, var(--secondary) 60%, transparent); }
.hover\:text-foreground:hover { color: var(--foreground); }
.hover\:text-primary:hover { color: var(--primary); }
.border-border\/60 { border-color: color-mix(in oklab, var(--border) 60%, transparent); }

.glass {
  background: var(--glass);
  backdrop-filter: blur(28px) saturate(150%);
  -webkit-backdrop-filter: blur(28px) saturate(150%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-glass);
}

.glass-soft {
  background: color-mix(in oklab, var(--card) 78%, transparent);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid var(--glass-border);
}

.text-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.bg-brand {
  background: var(--gradient-brand);
}

.bg-aura {
  background: var(--gradient-soft);
}

.shadow-float {
  box-shadow: var(--shadow-float);
}

.shadow-glow {
  box-shadow: var(--shadow-glow);
}

.gradient-ring {
  position: relative;
}

.gradient-ring::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--gradient-brand);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.35;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.gradient-ring:hover::before {
  opacity: 1;
}

@keyframes float-slow {
  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-14px) rotate(0.6deg);
  }
}

@keyframes pulse-glow {
  0%,
  100% {
    opacity: 0.45;
    transform: scale(1);
  }
  50% {
    opacity: 0.85;
    transform: scale(1.06);
  }
}

@keyframes marquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

@keyframes particle-float {
  0%,
  100% {
    transform: translateY(0);
    opacity: 0;
  }
  50% {
    opacity: 0.9;
  }
  100% {
    transform: translateY(-40px);
    opacity: 0;
  }
}

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

@keyframes check-pop {
  from {
    opacity: 0;
    transform: scale(0) rotate(-45deg);
  }
  to {
    opacity: 1;
    transform: scale(1) rotate(0);
  }
}

.animate-float {
  animation: float-slow 7s ease-in-out infinite;
}

.animate-pulse-glow {
  animation: pulse-glow 6s ease-in-out infinite;
}

.animate-marquee {
  animation: marquee 28s linear infinite;
}

.animate-spin {
  animation: spin 1s linear infinite;
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  filter: blur(6px);
  transition:
    opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.7s cubic-bezier(0.16, 1, 0.3, 1),
    filter 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: var(--reveal-delay, 0s);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition:
    opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: var(--reveal-delay, 0s);
}

.reveal-scale.is-visible {
  opacity: 1;
  transform: scale(1);
}

.nav-enter {
  animation: nav-in 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes nav-in {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-enter {
  opacity: 0;
  transform: translateY(24px);
  animation: hero-in 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.05s forwards;
}

.hero-stats-enter {
  opacity: 0;
  transform: translateY(20px);
  animation: hero-in 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.5s forwards;
}

@keyframes hero-in {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.check-pop.is-visible {
  animation: check-pop 0.55s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
  animation-delay: var(--reveal-delay, 0.1s);
}

/* Hero feature chips animate on load */
.hero-chip {
  opacity: 0;
  transform: scale(0.9);
  animation: chip-in 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: var(--reveal-delay, 0.3s);
}

@keyframes chip-in {
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.fill-current {
  fill: currentColor;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  white-space: nowrap;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  text-decoration: none;
  font-family: inherit;
}

.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 1px var(--ring);
}

.btn-sm {
  height: 2.25rem;
  padding: 0 1rem;
  font-size: 0.75rem;
}

.btn-md {
  height: 2.75rem;
  padding: 0 1.5rem;
}

.btn-lg {
  height: 3.25rem;
  padding: 0 2rem;
  font-size: 1rem;
}

.btn-hero {
  background: var(--gradient-brand);
  color: var(--primary-foreground);
  box-shadow: var(--shadow-glow);
}

.btn-hero:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

.btn-glass {
  background: var(--glass);
  backdrop-filter: blur(28px) saturate(150%);
  -webkit-backdrop-filter: blur(28px) saturate(150%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-glass);
  color: var(--foreground);
}

.btn-glass:hover {
  transform: translateY(-2px);
  filter: brightness(1.05);
}

.btn-ghost {
  background: transparent;
  color: var(--foreground);
}

.btn-ghost:hover {
  background: color-mix(in oklab, var(--secondary) 60%, transparent);
}

.btn svg,
.icon {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

/* Form controls */
.input,
.textarea {
  display: flex;
  width: 100%;
  border-radius: 0.75rem;
  border: 1px solid var(--input);
  background: var(--background);
  padding: 0.625rem 0.875rem;
  font-size: 0.875rem;
  color: var(--foreground);
  font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.input:focus,
.textarea:focus {
  outline: none;
  border-color: var(--ring);
  box-shadow: 0 0 0 2px color-mix(in oklab, var(--primary) 25%, transparent);
}

.textarea {
  resize: vertical;
  min-height: 6rem;
}

.label {
  font-size: 0.875rem;
  font-weight: 500;
}

/* Range slider */
.range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 0.5rem;
  border-radius: 9999px;
  background: var(--secondary);
  outline: none;
  margin-top: 1rem;
}

.range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 50%;
  background: var(--gradient-brand);
  cursor: pointer;
  box-shadow: var(--shadow-glow);
  border: 2px solid var(--primary-foreground);
}

.range::-moz-range-thumb {
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  border: 2px solid var(--primary-foreground);
}

/* Card hover lift */
.lift {
  transition: transform 0.35s cubic-bezier(0.34, 1.4, 0.64, 1);
}

.lift:hover {
  transform: translateY(-8px);
}

.lift-sm:hover {
  transform: translateY(-6px);
}

.service-tint {
  opacity: 0;
  transition: opacity 0.5s ease;
}

.group:hover .service-tint {
  opacity: 1;
}

.group:hover .service-icon {
  transform: scale(1.1) rotate(6deg);
}

.service-icon {
  transition: transform 0.5s ease;
}

.group:hover .case-arrow {
  transform: translate(4px, -4px);
  color: var(--primary);
}

.case-arrow {
  transition: transform 0.3s ease, color 0.3s ease;
}

.workflow-icon:hover {
  transform: rotate(6deg) scale(1.06);
}

.workflow-icon {
  transition: transform 0.3s cubic-bezier(0.34, 1.4, 0.64, 1);
}

/* Particles */
.particle {
  position: absolute;
  border-radius: 9999px;
  background: color-mix(in oklab, var(--primary) 40%, transparent);
  pointer-events: none;
  animation: particle-rise var(--dur, 10s) ease-in-out infinite;
  animation-delay: var(--delay, 0s);
}

@keyframes particle-rise {
  0% {
    transform: translateY(0);
    opacity: 0;
  }
  40% {
    opacity: 0.9;
  }
  100% {
    transform: translateY(-40px);
    opacity: 0;
  }
}

/* Marquee mask */
.marquee-mask {
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}

/* Mobile menu */
.mobile-menu {
  display: none;
}

.mobile-menu.is-open {
  display: grid;
  animation: menu-in 0.25s ease forwards;
}

@keyframes menu-in {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Demo messages */
 .msg-enter {
  animation: msg-in 0.35s ease forwards;
}

@keyframes msg-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.estimate-pop {
  animation: estimate-in 0.35s ease;
}

@keyframes estimate-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.chart-wrap {
  position: relative;
  width: 100%;
}

.hidden {
  display: none;
}

/* Theme icon swap */
.theme-icon-sun {
  display: none;
}

.dark .theme-icon-sun {
  display: block;
}

.dark .theme-icon-moon {
  display: none;
}