/* Landing — Expoflow V4 — premium tier (Linear/WHOOP-class polish) */
@import url('tokens.css');
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Instrument+Serif:ital@0;1&display=swap');

/* === Container === */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.container-narrow { max-width: var(--container-narrow); margin: 0 auto; padding: 0 var(--space-6); }

/* === Header === */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(250, 250, 251, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-default), background var(--transition-default);
}
.site-header.scrolled {
  border-bottom-color: var(--border-subtle);
  background: rgba(250, 250, 251, 0.85);
}
.site-header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  max-width: var(--container-max); margin: 0 auto;
}
.logo {
  font-size: var(--text-xl); font-weight: var(--font-extrabold);
  color: var(--text-primary); display: inline-flex; align-items: center; gap: var(--space-2);
  letter-spacing: -0.03em;
}
.logo .dot { color: var(--brand-primary); }
.nav-links { display: flex; gap: var(--space-6); align-items: center; }
.nav-links a {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  position: relative;
  transition: color var(--transition-fast);
}
.nav-links a:not(.btn)::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -4px;
  height: 1px; background: currentColor;
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--transition-default);
}
.nav-links a:not(.btn):hover { color: var(--text-primary); }
.nav-links a:not(.btn):hover::after { transform: scaleX(1); }

@media (max-width: 720px) {
  .nav-links a:not(.btn) { display: none; }
}

/* === Buttons === */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base); font-weight: var(--font-semibold);
  font-family: inherit;
  border: 0; border-radius: var(--radius-pill); cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
  text-decoration: none; white-space: nowrap;
  letter-spacing: -0.005em;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--text-primary); color: var(--text-inverse);
  box-shadow: 0 1px 0 rgba(255,255,255,0.10) inset, var(--shadow-md);
}
.btn-primary:hover { background: #000; color: var(--text-inverse); transform: translateY(-1px); box-shadow: 0 1px 0 rgba(255,255,255,0.10) inset, var(--shadow-lg); }
.btn-accent {
  background: var(--brand-accent); color: white;
  box-shadow: 0 4px 24px rgba(255, 107, 107, 0.35);
}
.btn-accent:hover { background: var(--brand-accent-dark); color: white; transform: translateY(-1px); }
.btn-ghost {
  background: rgba(255,255,255,0.6);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.btn-ghost:hover { background: var(--bg-card); border-color: var(--text-primary); }
.btn-lg { padding: var(--space-4) var(--space-8); font-size: var(--text-lg); }
.btn-sm { padding: var(--space-2) var(--space-4); font-size: var(--text-sm); }

/* === Hero — premium === */
.hero {
  position: relative;
  padding: clamp(6rem, 12vw, 10rem) 0 clamp(5rem, 10vw, 8rem);
  overflow: hidden;
  isolation: isolate;
}
/* Aurora mesh background */
.hero::before {
  content: ''; position: absolute; inset: -10%;
  background:
    radial-gradient(ellipse 60% 50% at 18% 20%, rgba(124, 107, 196, 0.32), transparent 60%),
    radial-gradient(ellipse 50% 40% at 85% 25%, rgba(255, 107, 107, 0.18), transparent 60%),
    radial-gradient(ellipse 70% 50% at 50% 90%, rgba(168, 154, 217, 0.18), transparent 60%);
  filter: blur(40px);
  z-index: -2;
  animation: auroraFloat 24s ease-in-out infinite;
}
.hero::after {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(124, 107, 196, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 107, 196, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, black, transparent);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, black, transparent);
  z-index: -1;
}
@keyframes auroraFloat {
  0%,100% { transform: translate(0,0) rotate(0deg); }
  33%     { transform: translate(2%, -3%) rotate(2deg); }
  66%     { transform: translate(-2%, 2%) rotate(-1deg); }
}

.hero-inner { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--space-6); position: relative; }

.hero-badge {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-size: var(--text-sm); font-weight: var(--font-medium);
  border-radius: var(--radius-pill); margin-bottom: var(--space-8);
  box-shadow: var(--shadow-xs);
}
.hero-badge .pulse {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.6); }
  70%  { box-shadow: 0 0 0 12px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero h1 {
  font-family: var(--font-sans);
  font-size: clamp(2.75rem, 7.5vw, 6.5rem);
  font-weight: 800;
  line-height: 0.98; letter-spacing: -0.045em;
  color: var(--text-primary);
  margin: 0 0 var(--space-8);
  max-width: 16ch;
}
.hero h1 .serif {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-accent) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead {
  font-size: clamp(1.125rem, 1.6vw, 1.375rem);
  color: var(--text-secondary);
  margin: 0 0 var(--space-10); max-width: 52ch;
  line-height: 1.45;
  font-weight: var(--font-regular);
}
.hero p.lead strong { color: var(--text-primary); font-weight: var(--font-semibold); }
.hero-cta { display: flex; gap: var(--space-4); flex-wrap: wrap; align-items: center; }

.hero-stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8); margin-top: var(--space-20);
  padding-top: var(--space-10);
  border-top: 1px solid var(--border-subtle);
}
.hero-stat .num {
  font-family: var(--font-sans);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.04em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.hero-stat .num .small { font-size: 0.5em; vertical-align: top; color: var(--text-muted); margin-left: 2px; font-weight: 600; }
.hero-stat .label {
  font-size: var(--text-sm); color: var(--text-muted);
  margin-top: var(--space-2);
  letter-spacing: -0.005em;
}

@media (max-width: 720px) {
  .hero-stats { grid-template-columns: 1fr; gap: var(--space-6); padding-top: var(--space-8); margin-top: var(--space-12); }
}

/* === Sections === */
section.section { padding: clamp(5rem, 10vw, 8rem) 0; position: relative; }
section.section-tight { padding: clamp(3rem, 6vw, 5rem) 0; }

.section-eyebrow {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--brand-primary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: var(--space-4);
  display: inline-flex; align-items: center; gap: var(--space-2);
}
.section-eyebrow::before {
  content: ''; width: 24px; height: 1px; background: var(--brand-primary); opacity: 0.5;
}
.section-title {
  font-family: var(--font-sans);
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.035em;
  color: var(--text-primary);
  margin: 0 0 var(--space-4);
  max-width: 22ch;
}
.section-title .serif {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.015em;
  color: var(--brand-primary);
}
.section-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 56ch;
  line-height: 1.55;
  margin: 0 0 var(--space-12);
}

/* === Features (Bento-style) === */
.features {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-5);
}
.feature {
  grid-column: span 4;
  padding: var(--space-8);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  position: relative; overflow: hidden;
  transition: transform var(--transition-default), box-shadow var(--transition-default), border-color var(--transition-default);
}
.feature:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-primary-light);
}
.feature::before {
  content: ''; position: absolute; left: 0; right: 0; top: 0; height: 2px;
  background: linear-gradient(90deg, var(--brand-primary), var(--brand-accent));
  transform: scaleX(0); transform-origin: left;
  transition: transform 600ms var(--ease-out);
}
.feature:hover::before { transform: scaleX(1); }
.feature-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-primary-dark));
  display: inline-flex; align-items: center; justify-content: center;
  color: white; font-size: var(--text-xl); margin-bottom: var(--space-5);
  box-shadow: 0 8px 24px rgba(124, 107, 196, 0.30);
}
.feature h3 {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-2);
  color: var(--text-primary);
}
.feature p {
  color: var(--text-secondary);
  line-height: 1.55;
  margin: 0;
  font-size: var(--text-base);
}
/* First two cards span wider for asymmetric grid */
.feature.feature-wide { grid-column: span 6; }
.feature.feature-tall { grid-column: span 4; }
@media (max-width: 960px) {
  .feature, .feature.feature-wide, .feature.feature-tall { grid-column: span 6; }
}
@media (max-width: 600px) {
  .feature, .feature.feature-wide, .feature.feature-tall { grid-column: span 12; }
}

/* === How it works === */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  counter-reset: step;
  position: relative;
}
.steps::before {
  content: ''; position: absolute;
  top: 32px; left: 8%; right: 8%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-default), transparent);
  z-index: 0;
}
.step {
  position: relative; padding: var(--space-6) var(--space-5);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  z-index: 1;
}
.step::before {
  counter-increment: step; content: counter(step);
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  font-family: var(--font-display); font-style: italic;
  font-size: var(--text-3xl); font-weight: 400;
  color: var(--brand-primary);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: var(--space-5);
  box-shadow: var(--shadow-sm);
}
.step h4 {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  letter-spacing: -0.015em;
  margin: 0 0 var(--space-2);
  color: var(--text-primary);
}
.step p { color: var(--text-secondary); line-height: 1.55; margin: 0; }

@media (max-width: 760px) { .steps { grid-template-columns: 1fr; } .steps::before { display: none; } }

/* === Pricing === */
.pricing { background: var(--bg-elevated); }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 380px));
  gap: var(--space-6); justify-content: center;
}
.pricing-grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 320px));
  max-width: 1100px; margin: 0 auto;
}
.plan {
  background: var(--bg-card);
  padding: var(--space-10) var(--space-8);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  position: relative; display: flex; flex-direction: column;
  transition: transform var(--transition-default), box-shadow var(--transition-default);
}
.plan:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.plan.featured {
  border-color: var(--text-primary);
  background: linear-gradient(180deg, #1A1727 0%, var(--bg-darker) 100%);
  color: white;
  box-shadow: var(--shadow-xl);
  transform: scale(1.04);
}
.plan.featured:hover { transform: scale(1.04) translateY(-4px); }
.plan.featured::before {
  content: 'Most popular';
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--brand-accent); color: white;
  padding: 4px var(--space-4);
  border-radius: var(--radius-pill);
  font-size: var(--text-xs); font-weight: var(--font-bold);
  letter-spacing: 0.08em; text-transform: uppercase;
  box-shadow: 0 8px 24px rgba(255,107,107,0.4);
}
.plan-name { font-size: var(--text-sm); color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; font-weight: var(--font-semibold); }
.plan.featured .plan-name { color: rgba(255,255,255,0.6); }
.plan-price {
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  margin: var(--space-3) 0;
  line-height: 1;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}
.plan.featured .plan-price { color: white; }
.plan-price .period {
  font-size: var(--text-base); color: var(--text-muted); font-weight: var(--font-regular);
  letter-spacing: -0.01em;
}
.plan.featured .plan-price .period { color: rgba(255,255,255,0.6); }
.plan-desc { color: var(--text-secondary); margin-bottom: var(--space-6); line-height: 1.5; }
.plan.featured .plan-desc { color: rgba(255,255,255,0.7); }
.plan-features { list-style: none; padding: 0; margin: 0 0 var(--space-8); flex: 1; }
.plan-features li {
  padding: var(--space-2) 0; color: var(--text-secondary);
  display: flex; align-items: center; gap: var(--space-3);
  border-bottom: 1px solid var(--border-subtle);
  font-size: var(--text-sm);
}
.plan-features li:last-child { border-bottom: 0; }
.plan-features li::before {
  content: '✓'; color: var(--brand-primary); font-weight: var(--font-bold);
  width: 16px; height: 16px;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.plan.featured .plan-features li { color: rgba(255,255,255,0.85); border-bottom-color: rgba(255,255,255,0.10); }
.plan.featured .plan-features li::before { color: var(--brand-accent); }
.plan .btn { width: 100%; }
.plan.featured .btn-primary { background: white; color: var(--text-primary); }
.plan.featured .btn-primary:hover { background: rgba(255,255,255,0.9); color: var(--text-primary); }

@media (max-width: 720px) { .plan.featured { transform: none; } .plan.featured:hover { transform: translateY(-2px); } }

/* === Social proof === */
.proof {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5);
}
.proof-card {
  background: var(--bg-card);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
  position: relative;
  transition: transform var(--transition-default), box-shadow var(--transition-default);
}
.proof-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.proof-card::before {
  content: '"';
  position: absolute; top: var(--space-3); right: var(--space-5);
  font-family: var(--font-display);
  font-size: 5rem; line-height: 1;
  color: var(--brand-primary);
  opacity: 0.18;
}
.proof-card p {
  font-size: var(--text-lg);
  color: var(--text-primary);
  line-height: 1.5;
  margin: 0 0 var(--space-5);
  letter-spacing: -0.01em;
}
.proof-author { display: flex; align-items: center; gap: var(--space-3); }
.proof-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-accent));
  flex-shrink: 0;
}
.proof-name { font-weight: var(--font-semibold); color: var(--text-primary); font-size: var(--text-sm); }
.proof-title { color: var(--text-muted); font-size: var(--text-xs); margin-top: 2px; }

/* === CTA === */
.cta-section {
  background: linear-gradient(135deg, var(--bg-darker) 0%, #1A1626 100%);
  color: var(--text-inverse);
  text-align: center;
  position: relative; overflow: hidden;
}
.cta-section::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 30% 100%, rgba(124, 107, 196, 0.5), transparent 70%),
    radial-gradient(ellipse 50% 50% at 70% 0%, rgba(255, 107, 107, 0.30), transparent 60%);
  pointer-events: none;
}
.cta-section::after {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black, transparent);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black, transparent);
  pointer-events: none;
}
.cta-section .container { position: relative; z-index: 1; }
.cta-section h2 {
  font-family: var(--font-sans);
  color: var(--text-inverse);
  font-size: clamp(2rem, 5vw, 4rem);
  margin-bottom: var(--space-4);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
}
.cta-section h2 .serif { font-family: var(--font-display); font-style: italic; font-weight: 400; color: var(--brand-primary-light); }
.cta-section p {
  color: rgba(255,255,255,0.70);
  font-size: var(--text-xl);
  margin-bottom: var(--space-10);
  max-width: 50ch; margin-left: auto; margin-right: auto;
}
.cta-section .btn-accent { box-shadow: 0 12px 48px rgba(255, 107, 107, 0.40); }

/* === Footer === */
.site-footer { padding: var(--space-16) 0 var(--space-10); background: var(--bg-page); border-top: 1px solid var(--border-subtle); }
.footer-grid {
  display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: var(--space-12);
  margin-bottom: var(--space-10);
}
.footer-grid h5 { font-size: var(--text-sm); font-weight: var(--font-semibold); color: var(--text-muted); margin: 0 0 var(--space-4); text-transform: uppercase; letter-spacing: 0.08em; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid ul li { padding: var(--space-1) 0; }
.footer-grid ul li a { color: var(--text-secondary); font-size: var(--text-sm); transition: color var(--transition-fast); }
.footer-grid ul li a:hover { color: var(--text-primary); }
.footer-bottom {
  padding-top: var(--space-8); border-top: 1px solid var(--border-subtle);
  display: flex; justify-content: space-between; align-items: center;
  font-size: var(--text-sm); color: var(--text-muted);
}
@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
  .footer-bottom { flex-direction: column; gap: var(--space-4); }
}

/* === Reveal animations (Intersection Observer driven) === */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 800ms var(--ease-out), transform 800ms var(--ease-out);
  will-change: transform, opacity;
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}
.reveal.delay-1 { transition-delay: 80ms; }
.reveal.delay-2 { transition-delay: 160ms; }
.reveal.delay-3 { transition-delay: 240ms; }
.reveal.delay-4 { transition-delay: 320ms; }
.reveal.delay-5 { transition-delay: 400ms; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-up { animation: fadeUp 900ms var(--ease-out) both; }
.fade-up.delay-1 { animation-delay: 100ms; }
.fade-up.delay-2 { animation-delay: 220ms; }
.fade-up.delay-3 { animation-delay: 340ms; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}