/* ─── eZHealth Pitch Site – Design System ─── */

/* ─── Fonts ─── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ─── CSS Custom Properties ─── */
:root {
  /* Primary palette — medical teal/cyan */
  --c-primary-50:  #e0faf5;
  --c-primary-100: #b3f1e2;
  --c-primary-200: #80e7ce;
  --c-primary-300: #4dddba;
  --c-primary-400: #26d4ab;
  --c-primary-500: #00c9a7;
  --c-primary-600: #00b89a;
  --c-primary-700: #00a48a;
  --c-primary-800: #00907a;
  --c-primary-900: #006e5e;

  /* Accent — electric blue */
  --c-accent-400: #60a5fa;
  --c-accent-500: #3b82f6;
  --c-accent-600: #2563eb;

  /* Warning / highlight */
  --c-warn-400:  #fbbf24;
  --c-warn-500:  #f59e0b;

  /* Surface colors — deep dark */
  --c-bg:        #03070e;
  --c-bg-card:   rgba(8, 18, 35, 0.65);
  --c-bg-glass:  rgba(12, 28, 50, 0.45);
  --c-surface-1: #0b1628;
  --c-surface-2: #111f3a;
  --c-surface-3: #172a4d;

  /* Text */
  --c-text:        #e8edf5;
  --c-text-dim:    #8b9ec2;
  --c-text-muted:  #5a6f94;

  /* Borders */
  --c-border:      rgba(100, 160, 220, 0.12);
  --c-border-glow: rgba(0, 201, 167, 0.25);

  /* Gradients */
  --g-hero: linear-gradient(135deg, #00c9a7 0%, #3b82f6 50%, #8b5cf6 100%);
  --g-hero-subtle: linear-gradient(135deg, rgba(0,201,167,0.15) 0%, rgba(59,130,246,0.10) 50%, rgba(139,92,246,0.08) 100%);
  --g-card: linear-gradient(145deg, rgba(0,201,167,0.06), rgba(59,130,246,0.04));
  --g-glow: radial-gradient(600px circle at var(--mx, 50%) var(--my, 50%), rgba(0,201,167,0.08), transparent 40%);
  --g-mesh:
    radial-gradient(at 20% 30%, rgba(0,201,167,0.12) 0, transparent 50%),
    radial-gradient(at 80% 20%, rgba(59,130,246,0.10) 0, transparent 50%),
    radial-gradient(at 60% 80%, rgba(139,92,246,0.08) 0, transparent 50%);

  /* Typography */
  --f-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Sizing scale */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.25rem;
  --sp-6: 1.5rem;
  --sp-8: 2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;
  --sp-24: 6rem;
  --sp-32: 8rem;

  /* Radius */
  --r-sm: 0.5rem;
  --r-md: 0.75rem;
  --r-lg: 1rem;
  --r-xl: 1.5rem;
  --r-2xl: 2rem;
  --r-full: 9999px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --t-fast: 200ms;
  --t-base: 350ms;
  --t-slow: 600ms;

  /* Shadows */
  --sh-sm: 0 1px 2px rgba(0,0,0,0.3);
  --sh-md: 0 4px 16px rgba(0,0,0,0.3);
  --sh-lg: 0 8px 32px rgba(0,0,0,0.4);
  --sh-glow: 0 0 40px rgba(0,201,167,0.15);
  --sh-glow-accent: 0 0 40px rgba(59,130,246,0.15);
}

/* ─── Reset ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 16px;
}

body {
  font-family: var(--f-sans);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--c-bg); }
::-webkit-scrollbar-thumb { background: var(--c-surface-3); border-radius: var(--r-full); }
::-webkit-scrollbar-thumb:hover { background: var(--c-primary-700); }

::selection { background: rgba(0,201,167,0.3); color: #fff; }

/* ─── Utility ─── */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--sp-6);
}

/* ─── Background mesh ─── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: var(--g-mesh);
  z-index: -2;
  pointer-events: none;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 0h60v60H0z' fill='none'/%3E%3Cpath d='M60 0v60M0 0h60' stroke='rgba(100,160,220,0.03)' stroke-width='0.5'/%3E%3C/svg%3E");
  z-index: -1;
  pointer-events: none;
  opacity: 0.5;
}

/* ═══════════════════════════════════════════════
   NAV
═══════════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: var(--sp-4) 0;
  transition: background var(--t-base) var(--ease-out),
              box-shadow var(--t-base) var(--ease-out),
              backdrop-filter var(--t-base) var(--ease-out);
}

.nav.scrolled {
  background: rgba(3, 7, 14, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  box-shadow: 0 1px 0 var(--c-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  text-decoration: none;
  color: var(--c-text);
}

.nav__logo-icon {
  width: 36px; height: 36px;
  background: var(--g-hero);
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.nav__logo-icon::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 50%, rgba(255,255,255,0.15) 50%);
}

.nav__logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav__logo-text span {
  background: var(--g-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--sp-8);
  list-style: none;
}

.nav__link {
  color: var(--c-text-dim);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--t-fast) var(--ease-out);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--g-hero);
  border-radius: var(--r-full);
  transition: width var(--t-base) var(--ease-out);
}

.nav__link:hover { color: var(--c-text); }
.nav__link:hover::after { width: 100%; }

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-5);
  background: var(--g-hero);
  color: #fff;
  font-weight: 600;
  font-size: 0.85rem;
  border-radius: var(--r-full);
  text-decoration: none;
  transition: transform var(--t-fast) var(--ease-spring), box-shadow var(--t-fast) var(--ease-out);
  box-shadow: var(--sh-glow);
}

.nav__cta:hover {
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 0 60px rgba(0,201,167,0.25);
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--sp-2);
}

.nav__hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--c-text);
  border-radius: var(--r-full);
  transition: all var(--t-base) var(--ease-out);
}

/* ═══════════════════════════════════════════════
   HERO
═══════════════════════════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: var(--sp-32) 0 var(--sp-16);
  overflow: hidden;
}

.hero__bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.4;
  animation: orbFloat 20s ease-in-out infinite;
  pointer-events: none;
}

.hero__bg-orb--1 { width: 600px; height: 600px; background: rgba(0,201,167,0.2); top: -200px; left: -100px; }
.hero__bg-orb--2 { width: 500px; height: 500px; background: rgba(59,130,246,0.15); bottom: -150px; right: -100px; animation-delay: -7s; }
.hero__bg-orb--3 { width: 350px; height: 350px; background: rgba(139,92,246,0.12); top: 50%; left: 50%; transform: translate(-50%, -50%); animation-delay: -14s; }

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -20px) scale(1.05); }
  66% { transform: translate(-20px, 15px) scale(0.95); }
}

.hero__content {
  text-align: center;
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  background: var(--c-bg-glass);
  border: 1px solid var(--c-border-glow);
  border-radius: var(--r-full);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--c-primary-400);
  margin-bottom: var(--sp-8);
  backdrop-filter: blur(12px);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s var(--ease-out) 0.2s forwards;
}

.hero__badge-dot {
  width: 8px; height: 8px;
  background: var(--c-primary-500);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero__title {
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.035em;
  margin-bottom: var(--sp-6);
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s var(--ease-out) 0.4s forwards;
}

.hero__title-gradient {
  background: var(--g-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  color: var(--c-text-dim);
  max-width: 650px;
  margin: 0 auto var(--sp-10);
  line-height: 1.7;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s var(--ease-out) 0.6s forwards;
}

.hero__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-4);
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s var(--ease-out) 0.8s forwards;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-6);
  font-family: var(--f-sans);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--r-xl);
  text-decoration: none;
  transition: all var(--t-base) var(--ease-spring);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--g-hero);
  color: #fff;
  box-shadow: var(--sh-glow);
}

.btn--primary:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 0 60px rgba(0,201,167,0.3), 0 8px 25px rgba(0,0,0,0.3);
}

.btn--primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
  opacity: 0;
  transition: opacity var(--t-fast);
}

.btn--primary:hover::before { opacity: 1; }

.btn--ghost {
  background: var(--c-bg-glass);
  color: var(--c-text);
  border: 1px solid var(--c-border);
  backdrop-filter: blur(12px);
}

.btn--ghost:hover {
  border-color: var(--c-primary-500);
  background: rgba(0,201,167,0.08);
  transform: translateY(-2px);
}

/* ─── Hero Demo Flow Visual ─── */
.hero__visual {
  margin-top: var(--sp-16);
  opacity: 0;
  transform: translateY(40px);
  animation: fadeInUp 1s var(--ease-out) 1.1s forwards;
}

.hero__demo {
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-radius: var(--r-2xl);
  padding: var(--sp-8) var(--sp-6);
  backdrop-filter: blur(20px);
  box-shadow: var(--sh-lg), var(--sh-glow);
}

.demo-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: var(--sp-8);
}

.demo-flow__step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--sp-4);
  min-width: 140px;
  opacity: 0;
  transform: scale(0.8);
  animation: stepAppear 0.6s var(--ease-spring) forwards;
}

.demo-flow__step--1 { animation-delay: 1.4s; }
.demo-flow__step--2 { animation-delay: 1.8s; }
.demo-flow__step--3 { animation-delay: 2.2s; }

@keyframes stepAppear {
  to { opacity: 1; transform: scale(1); }
}

.demo-flow__icon {
  font-size: 2rem;
  margin-bottom: var(--sp-2);
  width: 60px; height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--g-hero-subtle);
  border: 1px solid var(--c-border-glow);
  border-radius: var(--r-xl);
}

.demo-flow__label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--c-text-dim);
}

.demo-flow__connector {
  width: 60px;
  height: 2px;
  background: var(--c-border);
  position: relative;
  margin: 0 var(--sp-2);
  margin-bottom: var(--sp-10);
}

.demo-flow__pulse {
  position: absolute;
  width: 10px; height: 10px;
  background: var(--c-primary-500);
  border-radius: 50%;
  top: 50%;
  transform: translateY(-50%);
  box-shadow: 0 0 15px var(--c-primary-500);
  animation: connectorPulse 2s ease-in-out infinite;
}

@keyframes connectorPulse {
  0% { left: 0%; opacity: 0; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  100% { left: 100%; opacity: 0; }
}

.demo-flow__result {
  opacity: 0;
  transform: translateY(15px);
  animation: fadeInUp 0.8s var(--ease-out) 3s forwards;
}

.demo-flow__result-inner {
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--c-border-glow);
  border-radius: var(--r-lg);
  padding: var(--sp-5);
  max-width: 380px;
  margin: 0 auto;
}

.demo-flow__result-badge {
  display: inline-block;
  background: rgba(0,201,167,0.15);
  color: var(--c-primary-400);
  font-size: 0.8rem;
  font-weight: 600;
  padding: var(--sp-1) var(--sp-3);
  border-radius: var(--r-full);
  margin-bottom: var(--sp-3);
}

.demo-flow__result-data {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.demo-flow__result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

.demo-flow__result-label {
  color: var(--c-text-muted);
}

.demo-flow__result-value {
  color: var(--c-text);
  font-weight: 600;
}

.demo-flow__result-value--highlight {
  color: var(--c-primary-400);
}

.demo-flow__result-value--success {
  color: #28c840;
}

/* ═══════════════════════════════════════════════
   SECTION COMMON
═══════════════════════════════════════════════ */
.section {
  padding: var(--sp-24) 0;
  position: relative;
}

.section__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-primary-500);
  margin-bottom: var(--sp-4);
}

.section__eyebrow-line {
  width: 24px; height: 2px;
  background: var(--c-primary-500);
  border-radius: var(--r-full);
}

.section__heading {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: var(--sp-4);
}

.section__desc {
  font-size: 1.1rem;
  color: var(--c-text-dim);
  max-width: 600px;
  line-height: 1.7;
}

.section__header { margin-bottom: var(--sp-16); }
.section__header--center { text-align: center; }
.section__header--center .section__desc { margin-left: auto; margin-right: auto; }

/* ═══════════════════════════════════════════════
   PROBLEM CARDS
═══════════════════════════════════════════════ */
.problem__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
}

.problem__card {
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-radius: var(--r-xl);
  padding: var(--sp-8);
  backdrop-filter: blur(16px);
  transition: all var(--t-base) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.problem__card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--g-glow);
  opacity: 0;
  transition: opacity var(--t-base);
  pointer-events: none;
}

.problem__card:hover::before { opacity: 1; }

.problem__card:hover {
  border-color: var(--c-border-glow);
  transform: translateY(-4px);
  box-shadow: var(--sh-glow);
}

.problem__icon {
  width: 48px; height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--g-hero-subtle);
  border: 1px solid var(--c-border-glow);
  border-radius: var(--r-lg);
  margin-bottom: var(--sp-5);
  font-size: 1.4rem;
}

.problem__card-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: var(--sp-3);
  letter-spacing: -0.01em;
}

.problem__card-text {
  color: var(--c-text-dim);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ═══════════════════════════════════════════════
   SOLUTION FLOW
═══════════════════════════════════════════════ */
.solution__flow {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  padding: var(--sp-4) 0;
}

.solution__step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--sp-6) var(--sp-5);
  max-width: 260px;
  position: relative;
}

.solution__step-icon {
  width: 80px; height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-2xl);
  font-size: 2rem;
  margin-bottom: var(--sp-4);
  transition: all var(--t-base) var(--ease-spring);
}

.solution__step:hover .solution__step-icon {
  transform: scale(1.1);
  box-shadow: var(--sh-glow);
}

.solution__step-icon--1 {
  background: linear-gradient(135deg, rgba(251,191,36,0.15), rgba(251,191,36,0.05));
  border: 1px solid rgba(251,191,36,0.25);
}

.solution__step-icon--2 {
  background: linear-gradient(135deg, rgba(0,201,167,0.2), rgba(0,201,167,0.05));
  border: 1px solid rgba(0,201,167,0.3);
  box-shadow: var(--sh-glow);
}

.solution__step-icon--3 {
  background: linear-gradient(135deg, rgba(139,92,246,0.15), rgba(139,92,246,0.05));
  border: 1px solid rgba(139,92,246,0.25);
}

.solution__step-num {
  position: absolute;
  top: var(--sp-4);
  right: var(--sp-4);
  width: 28px; height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-bg-glass);
  border: 1px solid var(--c-border);
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--c-primary-400);
}

.solution__step-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--sp-2);
}

.solution__step-text {
  font-size: 0.9rem;
  color: var(--c-text-dim);
  line-height: 1.6;
}

.solution__connector {
  display: flex;
  align-items: center;
  padding-top: var(--sp-10);
  position: relative;
}

.solution__connector-line {
  width: 50px;
  height: 2px;
  background: linear-gradient(90deg, var(--c-primary-500), var(--c-accent-500));
  opacity: 0.4;
}

.solution__connector-dot {
  width: 8px; height: 8px;
  background: var(--c-primary-500);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--c-primary-500);
  animation: pulse 2s ease-in-out infinite;
}

/* Animated data packet track */
.arch__packet-track {
  position: relative;
  height: 48px;
  margin: var(--sp-6) 0;
  overflow: hidden;
}

.arch__packet {
  position: absolute;
  width: 12px; height: 12px;
  background: var(--c-primary-500);
  border-radius: 50%;
  box-shadow: 0 0 20px var(--c-primary-500), 0 0 40px rgba(0,201,167,0.3);
  top: 50%;
  transform: translateY(-50%);
  animation: packetMove 4s ease-in-out infinite;
}

.arch__packet:nth-child(2) { animation-delay: -1.3s; opacity: 0.7; }
.arch__packet:nth-child(3) { animation-delay: -2.6s; opacity: 0.5; }

@keyframes packetMove {
  0% { left: 0%; opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { left: 100%; opacity: 0; }
}

.arch__packet-line {
  position: absolute;
  top: 50%; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-primary-500), transparent);
  opacity: 0.2;
}

/* ═══════════════════════════════════════════════
   STATS
═══════════════════════════════════════════════ */
.stats {
  padding: var(--sp-16) 0;
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-6);
}

.stat-card {
  text-align: center;
  padding: var(--sp-8);
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-radius: var(--r-xl);
  backdrop-filter: blur(16px);
  transition: all var(--t-base) var(--ease-out);
}

.stat-card:hover {
  border-color: var(--c-border-glow);
  box-shadow: var(--sh-glow);
}

.stat-card__value {
  font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight: 900;
  background: var(--g-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  margin-bottom: var(--sp-2);
}

.stat-card__label {
  font-size: 0.85rem;
  color: var(--c-text-muted);
  font-weight: 500;
}

/* ═══════════════════════════════════════════════
   FEATURES / BENEFITS
═══════════════════════════════════════════════ */
.features__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-6);
}

.feature-card {
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-radius: var(--r-xl);
  padding: var(--sp-8);
  backdrop-filter: blur(16px);
  transition: all var(--t-base) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--g-glow);
  opacity: 0;
  transition: opacity var(--t-base);
  pointer-events: none;
}

.feature-card:hover::before { opacity: 1; }

.feature-card:hover {
  border-color: var(--c-border-glow);
  transform: translateY(-4px);
  box-shadow: var(--sh-glow);
}

.feature-card__header {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-4);
  margin-bottom: var(--sp-4);
}

.feature-card__icon {
  width: 44px; height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--g-hero-subtle);
  border: 1px solid var(--c-border-glow);
  border-radius: var(--r-md);
  font-size: 1.2rem;
  flex-shrink: 0;
}

.feature-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.feature-card__subtitle {
  font-size: 0.8rem;
  color: var(--c-primary-500);
  font-weight: 500;
  margin-top: var(--sp-1);
}

.feature-card__text {
  color: var(--c-text-dim);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ═══════════════════════════════════════════════
   USE CASES
═══════════════════════════════════════════════ */
.usecases__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-6);
}

.usecase-card {
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-radius: var(--r-xl);
  padding: var(--sp-8) var(--sp-6);
  text-align: center;
  backdrop-filter: blur(16px);
  transition: all var(--t-base) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.usecase-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--g-glow);
  opacity: 0;
  transition: opacity var(--t-base);
  pointer-events: none;
}

.usecase-card:hover::before { opacity: 1; }

.usecase-card:hover {
  border-color: var(--c-border-glow);
  transform: translateY(-4px);
  box-shadow: var(--sh-glow);
}

.usecase-card__icon {
  font-size: 2rem;
  margin-bottom: var(--sp-4);
  display: block;
}

.usecase-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: var(--sp-3);
}

.usecase-card__text {
  font-size: 0.9rem;
  color: var(--c-text-dim);
  line-height: 1.6;
}

/* ═══════════════════════════════════════════════
   COMPARISON (Before / After)
═══════════════════════════════════════════════ */
.comparison {
  display: flex;
  align-items: stretch;
  gap: var(--sp-6);
  max-width: 900px;
  margin: 0 auto;
}

.comparison__col {
  flex: 1;
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-radius: var(--r-xl);
  padding: var(--sp-8);
  backdrop-filter: blur(16px);
  transition: all var(--t-base) var(--ease-out);
}

.comparison__col--before:hover {
  border-color: rgba(239, 68, 68, 0.3);
}

.comparison__col--after:hover {
  border-color: var(--c-border-glow);
  box-shadow: var(--sh-glow);
}

.comparison__label {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--sp-6);
  padding-bottom: var(--sp-3);
  border-bottom: 2px solid var(--c-border);
}

.comparison__label--before { color: #ef4444; border-color: rgba(239,68,68,0.3); }
.comparison__label--after { color: var(--c-primary-400); border-color: var(--c-border-glow); }

.comparison__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.comparison__item {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  font-size: 0.92rem;
  line-height: 1.5;
}

.comparison__item--bad { color: var(--c-text-dim); }
.comparison__item--good { color: var(--c-text); }

.comparison__icon {
  flex-shrink: 0;
  width: 22px; height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 0.7rem;
  font-weight: 700;
  margin-top: 1px;
}

.comparison__item--bad .comparison__icon {
  background: rgba(239,68,68,0.15);
  color: #ef4444;
}

.comparison__item--good .comparison__icon {
  background: rgba(0,201,167,0.15);
  color: var(--c-primary-400);
}

.comparison__divider {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-3);
  padding: var(--sp-4) 0;
}

.comparison__divider-line {
  width: 1px;
  flex: 1;
  background: var(--c-border);
}

.comparison__divider-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--c-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ═══════════════════════════════════════════════
   CTA
═══════════════════════════════════════════════ */
.cta-section {
  text-align: center;
  padding: var(--sp-24) 0;
  position: relative;
}

.cta-section__bg {
  position: absolute;
  inset: 0;
  background: var(--g-hero-subtle);
  border-radius: var(--r-2xl);
  margin: 0 var(--sp-6);
  border: 1px solid var(--c-border);
  backdrop-filter: blur(12px);
}

.cta-section__content {
  position: relative;
  z-index: 2;
}

.cta-section__heading {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: var(--sp-4);
}

.cta-section__text {
  font-size: 1.1rem;
  color: var(--c-text-dim);
  margin-bottom: var(--sp-8);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ═══════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════ */
.footer {
  padding: var(--sp-12) 0;
  border-top: 1px solid var(--c-border);
  text-align: center;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-4);
}

.footer__text {
  font-size: 0.85rem;
  color: var(--c-text-muted);
}

.footer__links {
  display: flex;
  gap: var(--sp-6);
  list-style: none;
}

.footer__link {
  color: var(--c-text-dim);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color var(--t-fast);
}

.footer__link:hover { color: var(--c-primary-500); }

/* ═══════════════════════════════════════════════
   SCROLL ANIMATIONS
═══════════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

.stagger-children .reveal:nth-child(1) { transition-delay: 0.05s; }
.stagger-children .reveal:nth-child(2) { transition-delay: 0.1s; }
.stagger-children .reveal:nth-child(3) { transition-delay: 0.15s; }
.stagger-children .reveal:nth-child(4) { transition-delay: 0.2s; }
.stagger-children .reveal:nth-child(5) { transition-delay: 0.25s; }
.stagger-children .reveal:nth-child(6) { transition-delay: 0.3s; }

/* ═══════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .problem__grid { grid-template-columns: 1fr 1fr; }
  .stats__grid { grid-template-columns: repeat(2, 1fr); }
  .features__grid { grid-template-columns: 1fr; }
  .usecases__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__hamburger { display: flex; }

  .nav__links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: rgba(3,7,14,0.95);
    backdrop-filter: blur(20px);
    padding: var(--sp-6);
    border-bottom: 1px solid var(--c-border);
    gap: var(--sp-4);
  }

  .problem__grid { grid-template-columns: 1fr; }

  .solution__flow { flex-direction: column; align-items: center; }
  .solution__connector { transform: rotate(90deg); padding-top: 0; padding: var(--sp-2) 0; }

  .demo-flow { flex-direction: column; }
  .demo-flow__connector { width: 2px; height: 30px; margin: var(--sp-2) 0; }
  .demo-flow__pulse { animation-name: connectorPulseV; top: 0; left: 50%; transform: translateX(-50%); }

  @keyframes connectorPulseV {
    0% { top: 0%; opacity: 0; }
    20% { opacity: 1; }
    80% { opacity: 1; }
    100% { top: 100%; opacity: 0; }
  }

  .comparison { flex-direction: column; }
  .comparison__divider { flex-direction: row; padding: 0; }
  .comparison__divider-line { width: auto; height: 1px; flex: 1; }

  .hero__title { font-size: clamp(2rem, 8vw, 3.5rem); }
  .hero__actions { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
}

@media (max-width: 480px) {
  .stats__grid { grid-template-columns: 1fr; }
  .usecases__grid { grid-template-columns: 1fr; }
}

/* ═══════════════════════════════════════════════
   PARTICLE CANVAS
═══════════════════════════════════════════════ */
#particles-canvas {
  position: fixed;
  inset: 0;
  z-index: -3;
  pointer-events: none;
}

/* ═══════════════════════════════════════════════
   DIVIDER
═══════════════════════════════════════════════ */
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-border), transparent);
  margin: 0;
  border: none;
}