/* ===========================
   NEST — Liquid Glass Theme
   Primary #0072C6  Accent #29F49A
   =========================== */

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

:root {
  --blue:        #0072C6;
  --blue-dim:    rgba(0, 114, 198, 0.12);
  --blue-glow:   rgba(0, 114, 198, 0.06);
  --green:       #29F49A;
  --green-dim:   rgba(41, 244, 154, 0.12);
  --glass-bg:    rgba(255, 255, 255, 0.06);
  --glass-bg-2:  rgba(255, 255, 255, 0.09);
  --glass-border:rgba(255, 255, 255, 0.14);
  --text:        #f0f4f8;
  --text-muted:  rgba(240, 244, 248, 0.55);
  --text-dim:   rgba(240, 244, 248, 0.30);
  --radius:      20px;
  --radius-sm:   12px;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: #060d18;
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Animated gradient background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(0, 114, 198, 0.18) 0%, transparent 55%),
    radial-gradient(ellipse 60% 50% at 80% 80%, rgba(41, 244, 154, 0.10) 0%, transparent 50%),
    radial-gradient(ellipse 100% 80% at 50% 100%, rgba(0, 114, 198, 0.12) 0%, transparent 60%);
  animation: gradientShift 12s ease-in-out infinite alternate;
  pointer-events: none;
  z-index: 0;
}

@keyframes gradientShift {
  0%   { opacity: 1; transform: scale(1) translateY(0); }
  50%  { opacity: 0.85; transform: scale(1.04) translateY(-8px); }
  100% { opacity: 1; transform: scale(1) translateY(4px); }
}

/* ---- Typography ---- */
h1, h2, h3, h4 { font-family: 'Inter', system-ui, sans-serif; line-height: 1.15; font-weight: 700; }

.section-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 0.75rem;
  padding: 0.3rem 0.9rem;
  border: 1px solid rgba(41, 244, 154, 0.30);
  border-radius: 100px;
  background: rgba(41, 244, 154, 0.06);
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.025em;
}
.section-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 540px;
  margin: 0.75rem auto 0;
  font-weight: 400;
  line-height: 1.7;
}

/* ---- Glass Utility ---- */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid var(--glass-border);
}
.glass-2 {
  background: var(--glass-bg-2);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border: 1px solid rgba(255,255,255,0.10);
}

/* ===========================
   NAVBAR
   =========================== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1rem 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(6, 13, 24, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}
.nav-brand-icon {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  display: flex; align-items: center; justify-content: center;
}
.nav-brand-name {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.nav-link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.4rem 0.8rem;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}
.nav-link:hover { color: var(--text); background: var(--glass-bg); }
.nav-cta {
  font-size: 0.85rem;
  font-weight: 600;
  color: #060d18;
  background: var(--green);
  text-decoration: none;
  padding: 0.45rem 1.1rem;
  border-radius: 10px;
  transition: opacity 0.2s, transform 0.15s;
}
.nav-cta:hover { opacity: 0.88; transform: translateY(-1px); }

/* ===========================
   HERO
   =========================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8rem 2rem 5rem;
  text-align: center;
  z-index: 1;
}
.hero-inner { max-width: 820px; width: 100%; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
  padding: 0.4rem 0.8rem 0.4rem 0.6rem;
  border-radius: 100px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  font-size: 0.8rem;
  color: var(--text-muted);
}
.hero-badge-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

.hero-headline {
  font-size: clamp(2.8rem, 7vw, 5.2rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.04;
  color: var(--text);
  margin-bottom: 1.5rem;
}
.hero-headline em {
  font-style: normal;
  background: linear-gradient(135deg, var(--green) 0%, #6ef5c2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.22rem);
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 2.75rem;
  max-width: 580px;
  margin-left: auto;
  margin-right: auto;
  font-weight: 400;
}

/* Glass CTA panel */
.hero-cta-panel {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.5rem 0.5rem 0.75rem;
  border-radius: 16px;
  background: rgba(41, 244, 154, 0.08);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(41, 244, 154, 0.25);
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.6rem;
  background: var(--green);
  color: #060d18;
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: 12px;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.15s, box-shadow 0.2s;
  box-shadow: 0 0 24px rgba(41, 244, 154, 0.35);
}
.btn-primary:hover { opacity: 0.9; transform: translateY(-2px); box-shadow: 0 4px 32px rgba(41, 244, 154, 0.5); }
.btn-secondary {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.75rem 1rem;
  border-radius: 12px;
  transition: color 0.2s, background 0.2s;
}
.btn-secondary:hover { color: var(--text); background: var(--glass-bg); }

/* Pill tags */
.hero-pills {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}
.pill {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--blue);
  background: rgba(0, 114, 198, 0.12);
  border: 1px solid rgba(0, 114, 198, 0.25);
  padding: 0.3rem 0.8rem;
  border-radius: 100px;
}
.pill-sep { color: var(--text-dim); }

/* Stats bar */
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-top: 3.5rem;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(24px);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.stat {
  flex: 1;
  padding: 1.5rem 1rem;
  text-align: center;
  border-right: 1px solid rgba(255,255,255,0.06);
}
.stat:last-child { border-right: none; }
.stat-val {
  display: block;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.03em;
}
.stat-label {
  display: block;
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

/* ===========================
   FEATURES
   =========================== */
.features {
  position: relative;
  z-index: 1;
  padding: 7rem 2rem;
}
.features .section-header { text-align: center; margin-bottom: 3.5rem; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  max-width: 1100px;
  margin: 0 auto;
}
.feature-card {
  padding: 2rem;
  border-radius: var(--radius);
  background: var(--glass-bg);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid var(--glass-border);
  transition: background 0.25s, border-color 0.25s, transform 0.25s;
}
.feature-card:hover {
  background: var(--glass-bg-2);
  border-color: rgba(255,255,255,0.20);
  transform: translateY(-4px);
}
.feature-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-sm);
  background: rgba(0, 114, 198, 0.15);
  border: 1px solid rgba(0, 114, 198, 0.25);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.5rem;
}
.feature-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.65rem;
}
.feature-body {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===========================
   HOW IT WORKS (Architecture)
   =========================== */
.how {
  position: relative;
  z-index: 1;
  padding: 7rem 2rem;
  background: rgba(0, 114, 198, 0.03);
}
.how .section-header { text-align: center; margin-bottom: 4rem; }

.arch-flow {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  max-width: 1000px;
  margin: 0 auto 3.5rem;
  flex-wrap: wrap;
}
.arch-step {
  flex: 0 0 200px;
  text-align: center;
  padding: 0 0.75rem;
}
.arch-num {
  font-size: 3rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--blue), var(--green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 1rem;
  opacity: 0.7;
}
.arch-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.5rem;
}
.arch-body {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.65;
  font-weight: 400;
}
.arch-connector {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  padding-top: 2.2rem;
}

.tech-stack {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding-top: 2.5rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.tech-label { font-size: 0.72rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.1em; }
.tech-items { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.tech-item {
  font-size: 0.78rem;
  color: var(--text-muted);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 0.3rem 0.75rem;
  border-radius: 8px;
}

/* ===========================
   PRICING
   =========================== */
.pricing {
  position: relative;
  z-index: 1;
  padding: 7rem 2rem;
}
.pricing .section-header { text-align: center; margin-bottom: 3.5rem; }

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  max-width: 1000px;
  margin: 0 auto;
  align-items: start;
}
.pricing-card {
  border-radius: var(--radius);
  background: var(--glass-bg);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid var(--glass-border);
  padding: 2.25rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 0;
  transition: border-color 0.25s;
}
.pricing-card--featured {
  border-color: rgba(41, 244, 154, 0.35);
  background: rgba(41, 244, 154, 0.05);
  position: relative;
}
.pricing-card--featured::before {
  content: 'Most Popular';
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green);
  background: rgba(41, 244, 154, 0.12);
  border: 1px solid rgba(41, 244, 154, 0.3);
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
}
.pricing-tier {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 0.75rem;
}
.pricing-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}
.pricing-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.75rem;
}
.pricing-price {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  margin-bottom: 1.75rem;
}
.pricing-amount {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.04em;
}
.pricing-period {
  font-size: 0.85rem;
  color: var(--text-dim);
}
.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-bottom: 2rem;
  flex: 1;
}
.pricing-features li {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
}
.pricing-features li::before {
  content: '';
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  background: var(--green-dim);
  border-radius: 50%;
  margin-top: 0.15em;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10'%3E%3Cpath d='M1.5 5l2.5 2.5 4.5-5' stroke='%2329F49A' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
}
.pricing-cta {
  display: block;
  text-align: center;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.75rem;
  border-radius: 12px;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.15s;
}
.pricing-cta:hover { opacity: 0.9; transform: translateY(-1px); }
.pricing-cta--green {
  background: var(--green);
  color: #060d18;
}
.pricing-cta--glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
}
.pricing-cta--glass:hover { color: var(--text); }

/* ===========================
   WHY (Comparison)
   =========================== */
.why {
  position: relative;
  z-index: 1;
  padding: 7rem 2rem;
}
.why .section-header { text-align: center; margin-bottom: 3.5rem; }

.comparison-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 900px;
  margin: 0 auto;
  border: 1px solid var(--glass-border);
}
.comparison-col {
  padding: 2.5rem;
}
.comparison-col--bad { background: rgba(255,255,255,0.02); }
.comparison-col--good { background: rgba(41, 244, 154, 0.03); }
.comparison-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
}
.comparison-label--bad { color: var(--text-dim); }
.comparison-label--good { color: var(--green); }
.comparison-list { list-style: none; display: flex; flex-direction: column; gap: 0.85rem; }
.comparison-list li {
  font-size: 0.88rem;
  color: var(--text-muted);
  padding-left: 1.25rem;
  position: relative;
  line-height: 1.55;
}
.comparison-col--bad .comparison-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 0.5em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
}
.comparison-col--good .comparison-list li {
  color: var(--text);
}
.comparison-col--good .comparison-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 0.5em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green);
}

/* ===========================
   CLOSING CTA
   =========================== */
.closing {
  position: relative;
  z-index: 1;
  padding: 8rem 2rem;
  text-align: center;
}
.closing-inner {
  max-width: 640px;
  margin: 0 auto;
  padding: 3rem 2.5rem;
  border-radius: 28px;
  background: var(--glass-bg);
  backdrop-filter: blur(28px) saturate(200%);
  -webkit-backdrop-filter: blur(28px) saturate(200%);
  border: 1px solid var(--glass-border);
}
.closing-headline {
  font-size: clamp(1.8rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 1rem;
}
.closing-body {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 2.25rem;
  line-height: 1.7;
}

/* ===========================
   FOOTER
   =========================== */
.footer {
  position: relative;
  z-index: 1;
  padding: 2.5rem 2rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-brand { display: flex; flex-direction: column; gap: 0.25rem; }
.footer-name { font-size: 1.1rem; font-weight: 800; color: var(--text); letter-spacing: -0.02em; }
.footer-tagline { font-size: 0.78rem; color: var(--text-dim); }
.footer-meta { font-size: 0.8rem; color: var(--text-dim); }

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 900px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: 1fr; max-width: 420px; }
}
@media (max-width: 768px) {
  .navbar { padding: 1rem 1.5rem; }
  .nav-links { display: none; }
  .feature-grid { grid-template-columns: 1fr; }
  .comparison-block { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; }
  .stat { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.06); }
  .stat:last-child { border-bottom: none; }
  .arch-flow { flex-direction: column; align-items: center; }
  .arch-connector { display: none; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 480px) {
  .hero { padding: 6rem 1.5rem 4rem; }
  .features, .how, .why, .pricing, .closing { padding: 5rem 1.5rem; }
  .closing-inner { padding: 2.5rem 1.5rem; }
}