/* ===== RESET & VARIABLES ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black: #0a0a0a;
  --white: #ffffff;
  --lime: #C6F135;
  --lime-dim: #a8d020;
  --gray-900: #111111;
  --gray-800: #1a1a1a;
  --gray-700: #2a2a2a;
  --gray-500: #555555;
  --gray-300: #aaaaaa;
  --gray-100: #f0f0f0;
  --font-display: 'Bebas Neue', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'DM Mono', monospace;

  /* Emil: The one easing curve — strong ease-out everywhere */
  --ease: cubic-bezier(0.23, 1, 0.32, 1);

  /* Emil: Standardized durations */
  --dur-snap: 120ms;
  --dur-fast: 200ms;
  --dur-base: 340ms;
  --dur-slow: 600ms;

  /* 8pt spacing system */
  --sp-1: 4px;   --sp-2: 8px;   --sp-3: 12px;  --sp-4: 16px;
  --sp-5: 20px;  --sp-6: 24px;  --sp-8: 32px;  --sp-10: 40px;
  --sp-12: 48px; --sp-16: 64px; --sp-20: 80px; --sp-24: 96px;
  --sp-32: 128px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--black);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { text-decoration: none; color: inherit; }

/* ===== UTILITY ===== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--sp-6);
}

.accent { color: var(--lime); }

.section-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gray-500);
  text-transform: uppercase;
  margin-bottom: var(--sp-4);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(48px, 6vw, 80px);
  line-height: 0.93;
  letter-spacing: 0.02em;
  margin-bottom: var(--sp-16);
}

/* ===== EMIL: COMPOUND ENTRANCE KEYFRAME ===== */
/* Elements fill in from scale(0.95) — never from scale(0) */
@keyframes fillIn {
  from { opacity: 0; transform: translateY(20px) scale(0.95); }
  to   { opacity: 1; transform: translateY(0)    scale(1);    }
}

/* Scroll-reveal utility classes set by JS */
.reveal-hidden {
  opacity: 0;
  transform: translateY(24px) scale(0.95);
  will-change: transform, opacity;
}
.reveal-visible {
  transition:
    opacity var(--dur-slow) var(--ease),
    transform var(--dur-slow) var(--ease);
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--lime);
  color: var(--black);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 15px;
  padding: 14px 28px;
  border-radius: 100px;
  /* Emil: Explicit properties, not "all" */
  transition:
    background    var(--dur-base) var(--ease),
    transform     var(--dur-base) var(--ease),
    box-shadow    var(--dur-base) var(--ease);
  cursor: pointer;
  white-space: nowrap;
  /* GPU layer */
  transform: translateZ(0);
}

.btn-primary:hover {
  background: var(--white);
  transform: translateZ(0) translateY(-2px);
  box-shadow: 0 16px 48px rgba(198, 241, 53, 0.25);
}

/* Emil: Tactile active — 0.97 scale for physical press feel */
.btn-primary:active {
  transform: translateZ(0) scale(0.97);
  box-shadow: none;
  transition-duration: var(--dur-snap);
}

.btn-primary.large {
  font-size: 17px;
  padding: 18px 36px;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--gray-300);
  font-size: 15px;
  font-weight: 400;
  padding: 14px 0;
  border-bottom: 1px solid var(--gray-700);
  transition:
    color        var(--dur-base) var(--ease),
    border-color var(--dur-base) var(--ease),
    transform    var(--dur-base) var(--ease);
  transform: translateZ(0);
}

.btn-ghost:hover {
  color: var(--white);
  border-bottom-color: var(--white);
}

/* Emil: Tactile active */
.btn-ghost:active {
  transform: translateZ(0) scale(0.97);
  transition-duration: var(--dur-snap);
}

/* ===== NAV ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: var(--sp-5) 0;
  background: rgba(10,10,10,0.82);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  /* Emil: only transition padding — not "all" */
  transition: padding var(--dur-base) var(--ease);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--sp-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-display);
  font-size: 26px;
  letter-spacing: 0.08em;
  color: var(--white);
}

.nav-cta {
  background: var(--lime);
  color: var(--black);
  font-size: 13px;
  font-weight: 500;
  padding: 10px 20px;
  border-radius: 100px;
  transition:
    background var(--dur-base) var(--ease),
    transform  var(--dur-base) var(--ease);
  transform: translateZ(0);
}

.nav-cta:hover { background: var(--white); }

/* Emil: Tactile active */
.nav-cta:active {
  transform: translateZ(0) scale(0.97);
  transition-duration: var(--dur-snap);
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: var(--sp-16);
  max-width: 1100px;
  margin: 0 auto;
  padding: 120px var(--sp-6) var(--sp-20);
  position: relative;
}

.hero-bg-text {
  position: absolute;
  font-family: var(--font-display);
  font-size: clamp(200px, 25vw, 380px);
  color: rgba(255,255,255,0.018);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  white-space: nowrap;
  pointer-events: none;
  z-index: 0;
  letter-spacing: 0.05em;
}

.hero-content { position: relative; z-index: 1; }

/* Emil: Compound entrance — scale(0.95) → scale(1) */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  background: rgba(198,241,53,0.08);
  border: 1px solid rgba(198,241,53,0.22);
  color: var(--lime);
  font-size: 12px;
  font-family: var(--font-mono);
  padding: 7px 14px;
  border-radius: 100px;
  margin-bottom: var(--sp-6);
  opacity: 0;
  animation: fillIn var(--dur-slow) var(--ease) 0.05s forwards;
}

.badge-dot {
  width: 6px;
  height: 6px;
  background: var(--lime);
  border-radius: 50%;
  animation: pulse 2.4s var(--ease) infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.35; transform: scale(0.75); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(72px, 9vw, 120px);
  line-height: 0.88;
  letter-spacing: 0.02em;
  margin-bottom: var(--sp-6);
  opacity: 0;
  animation: fillIn var(--dur-slow) var(--ease) 0.12s forwards;
}

.hero-sub {
  font-size: 17px;
  color: var(--gray-300);
  line-height: 1.72;
  margin-bottom: var(--sp-10);
  max-width: 420px;
  opacity: 0;
  animation: fillIn var(--dur-slow) var(--ease) 0.20s forwards;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  flex-wrap: wrap;
  margin-bottom: var(--sp-16);
  opacity: 0;
  animation: fillIn var(--dur-slow) var(--ease) 0.28s forwards;
}

.hero-stats {
  display: flex;
  align-items: center;
  padding-top: var(--sp-6);
  border-top: 1px solid var(--gray-800);
  opacity: 0;
  animation: fillIn var(--dur-slow) var(--ease) 0.36s forwards;
}

.stat {
  display: flex;
  flex-direction: column;
  padding-right: var(--sp-8);
}

.stat-num {
  font-family: var(--font-display);
  font-size: 40px;
  line-height: 1;
  color: var(--lime);
  letter-spacing: 0.02em;
}

.stat-label {
  font-size: 10px;
  color: var(--gray-500);
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  margin-top: var(--sp-1);
  text-transform: uppercase;
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--gray-800);
  margin-right: var(--sp-8);
  flex-shrink: 0;
}

/* ===== PHONE MOCKUP ===== */
.hero-phone {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1;
  opacity: 0;
  animation: fillIn var(--dur-slow) var(--ease) 0.22s forwards;
}

/* Emil: Spring-like ambient glow pulse */
.phone-glow {
  position: absolute;
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(198,241,53,0.11) 0%, transparent 68%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  animation: glowBreath 4s var(--ease) infinite alternate;
  will-change: transform, opacity;
}

@keyframes glowBreath {
  from { opacity: 0.55; transform: translate(-50%, -50%) scale(0.90); }
  to   { opacity: 1;    transform: translate(-50%, -50%) scale(1.10); }
}

/* Emil: Spring float — idle alive feeling */
.phone-frame {
  width: 280px;
  background: var(--gray-900);
  border-radius: 44px;
  border: 1.5px solid rgba(255,255,255,0.1);
  padding: 20px 0 32px;
  position: relative;
  box-shadow:
    0 48px 96px rgba(0,0,0,0.65),
    0 0 0 1px rgba(255,255,255,0.04) inset,
    0 1px 0 rgba(255,255,255,0.08) inset;
  animation: phoneFloat 6s var(--ease) infinite alternate;
  will-change: transform;
}

@keyframes phoneFloat {
  from { transform: translateY(0px)   rotate(-0.4deg); }
  to   { transform: translateY(-10px) rotate(0.4deg);  }
}

.phone-notch {
  width: 96px;
  height: 26px;
  background: var(--black);
  border-radius: 0 0 20px 20px;
  margin: 0 auto 20px;
}

.phone-screen { padding: 0 20px; }

.app-header { margin-bottom: var(--sp-5); }

.app-date {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--gray-500);
  margin-bottom: 3px;
  letter-spacing: 0.05em;
}

.app-title {
  display: block;
  font-family: var(--font-display);
  font-size: 28px;
  letter-spacing: 0.05em;
  color: var(--white);
}

.exercise-block {
  background: rgba(255,255,255,0.035);
  border-radius: 14px;
  padding: 14px;
  margin-bottom: 8px;
  border: 1px solid rgba(255,255,255,0.07);
}

.exercise-name {
  font-size: 10px;
  font-family: var(--font-mono);
  color: var(--lime);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--sp-2);
}

.set-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  font-size: 12px;
  border-radius: 6px;
  /* Emil: transform+opacity only */
  transition:
    background var(--dur-base) var(--ease),
    transform  var(--dur-snap) var(--ease);
}

.set-row:last-child { border-bottom: none; }

.set-row.active {
  background: rgba(198,241,53,0.07);
  padding: 7px 6px;
}

/* Emil: Tactile active on set rows */
.set-row:active {
  transform: scale(0.97);
  transition-duration: var(--dur-snap);
}

.set-num {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--gray-500);
  letter-spacing: 0.06em;
  width: 34px;
}

.set-weight {
  font-weight: 500;
  font-size: 13px;
  color: var(--white);
  flex: 1;
}

.set-reps { font-size: 12px; color: var(--gray-300); }

.set-check {
  width: 20px;
  height: 20px;
  background: var(--lime);
  color: var(--black);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  font-weight: 700;
  /* Emil: pop spring on check completion */
  transition:
    transform  var(--dur-base) var(--ease),
    background var(--dur-base) var(--ease);
  transform: scale(1) translateZ(0);
  will-change: transform;
}

.set-check.completing { transform: scale(1.35) translateZ(0); }

.set-check.pending {
  background: var(--gray-700);
  color: var(--gray-500);
}

.add-exercise {
  text-align: center;
  padding: 11px;
  font-size: 11px;
  color: var(--lime);
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  border: 1px dashed rgba(198,241,53,0.22);
  border-radius: 10px;
  margin-top: 4px;
}

/* ===== PROBLEM STRIP ===== */
.problem-strip {
  background: var(--lime);
  padding: 15px 0;
  overflow: hidden;
  white-space: nowrap;
}

.strip-inner {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-6);
  animation: scrollLeft 24s linear infinite;
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: 0.12em;
  color: var(--black);
  will-change: transform;
}

.strip-dot { font-size: 7px; opacity: 0.4; }

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

/* ===== FEATURES ===== */
.features { padding: var(--sp-32) 0; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.feature-card {
  background: var(--gray-900);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 20px;
  padding: var(--sp-8);
  position: relative;
  overflow: hidden;
  /* Emil: GPU layer, explicit props only */
  transform: translateZ(0);
  will-change: transform;
  /* Emil: Skip-delay — hover states feel instant */
  transition:
    border-color var(--dur-base) var(--ease),
    transform    var(--dur-base) var(--ease),
    box-shadow   var(--dur-base) var(--ease);
  transition-delay: 0ms;
}

/* Vercel-like top accent line */
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: transparent;
  transition: background var(--dur-base) var(--ease);
}

/* Vercel-like inner glow */
.feature-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 20px;
  background: radial-gradient(ellipse at 50% 0%, rgba(198,241,53,0.05) 0%, transparent 55%);
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease);
  pointer-events: none;
}

.feature-card:hover {
  border-color: rgba(255,255,255,0.12);
  transform: translateZ(0) translateY(-3px);
  box-shadow: 0 24px 64px rgba(0,0,0,0.45), 0 0 0 1px rgba(198,241,53,0.05);
}

.feature-card:hover::before { background: var(--lime); }
.feature-card:hover::after  { opacity: 1; }

/* Emil: Tactile active — scale(0.97) physical feedback */
.feature-card:active {
  transform: translateZ(0) scale(0.97);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  transition-duration: var(--dur-snap);
}

.feature-card.large       { grid-column: span 2; }
.feature-card.large.right { grid-column: 2 / span 2; }

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 11px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.07);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: var(--sp-5);
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 26px;
  letter-spacing: 0.03em;
  margin-bottom: var(--sp-3);
  line-height: 1.05;
}

.feature-card p {
  color: var(--gray-300);
  font-size: 14px;
  line-height: 1.68;
  margin-bottom: var(--sp-5);
}

.feature-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--lime);
  background: rgba(198,241,53,0.08);
  border: 1px solid rgba(198,241,53,0.18);
  padding: 4px 10px;
  border-radius: 100px;
}

.feature-price {
  display: flex;
  align-items: baseline;
  gap: var(--sp-3);
  margin-top: var(--sp-5);
}

.price-amount {
  font-family: var(--font-display);
  font-size: 52px;
  color: var(--lime);
  letter-spacing: 0.02em;
  line-height: 1;
}

.price-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gray-500);
  letter-spacing: 0.06em;
}

/* ===== COMPARISON ===== */
.comparison {
  padding: var(--sp-32) 0;
  background: var(--gray-900);
}

.compare-table {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.06);
}

.compare-header {
  display: grid;
  grid-template-columns: 1fr 180px 180px;
  background: rgba(255,255,255,0.03);
  padding: var(--sp-4) var(--sp-8);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.compare-header .compare-col {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray-500);
}

.compare-header .swiftlift-col { color: var(--lime); }

.compare-row {
  display: grid;
  grid-template-columns: 1fr 180px 180px;
  padding: 16px var(--sp-8);
  border-bottom: 1px solid rgba(255,255,255,0.04);
  /* Emil: skip-delay, fast hover response */
  transition: background var(--dur-fast) var(--ease);
  transition-delay: 0ms;
  align-items: center;
}

.compare-row:last-child { border-bottom: none; }
.compare-row:hover      { background: rgba(255,255,255,0.018); }

.feature-col   { font-size: 14px; color: var(--gray-300); }
.others-col    { font-size: 13px; font-family: var(--font-mono); }
.swiftlift-col { font-size: 13px; font-family: var(--font-mono); }

.bad     { color: #ff5555; }
.neutral { color: var(--gray-500); }
.good    { color: var(--lime); }

/* ===== DOWNLOAD ===== */
.download { padding: var(--sp-32) 0; }

.download-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--sp-20);
  align-items: center;
}

.download-title {
  font-family: var(--font-display);
  font-size: clamp(52px, 6vw, 80px);
  line-height: 0.90;
  letter-spacing: 0.02em;
  margin-bottom: var(--sp-5);
}

.download-sub {
  font-size: 17px;
  color: var(--gray-300);
  line-height: 1.72;
  margin-bottom: var(--sp-10);
  max-width: 440px;
}

.download-note {
  margin-top: var(--sp-4);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gray-500);
  letter-spacing: 0.05em;
}

.download-card { flex-shrink: 0; }

.qr-placeholder {
  width: 176px;
  height: 176px;
  background: rgba(255,255,255,0.025);
  border: 1px dashed rgba(255,255,255,0.1);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.qr-inner { text-align: center; }

.qr-icon {
  font-size: 30px;
  margin-bottom: var(--sp-2);
  display: block;
}

.qr-inner p {
  font-size: 12px;
  color: var(--gray-300);
  margin-bottom: 3px;
}

.qr-inner span {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--gray-500);
  letter-spacing: 0.04em;
  line-height: 1.5;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--gray-900);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: var(--sp-16) 0 var(--sp-10);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--sp-12);
}

.footer-left .logo {
  display: block;
  font-size: 26px;
  margin-bottom: var(--sp-3);
}

.footer-left p {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.65;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  align-items: flex-end;
}

.footer-links a {
  font-size: 13px;
  color: var(--gray-500);
  transition: color var(--dur-base) var(--ease);
  font-family: var(--font-mono);
}

.footer-links a:hover { color: var(--lime); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: var(--sp-6);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gray-500);
  letter-spacing: 0.04em;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 100px;
    gap: var(--sp-12);
  }

  .hero-phone      { order: -1; }
  .hero-bg-text    { display: none; }
  .hero-sub        { max-width: 100%; }

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

  .feature-card.large,
  .feature-card.large.right { grid-column: span 1; }

  .compare-header,
  .compare-row {
    grid-template-columns: 1fr 120px 120px;
    padding: 14px var(--sp-5);
  }

  .download-inner  { grid-template-columns: 1fr; gap: var(--sp-10); }
  .download-card   { display: none; }

  .footer-inner    { flex-direction: column; gap: var(--sp-8); }
  .footer-links    {
    align-items: flex-start;
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--sp-4) var(--sp-6);
  }
}

@media (max-width: 600px) {
  .hero-title    { font-size: 68px; }
  .section-title { font-size: 44px; }

  .compare-header,
  .compare-row {
    grid-template-columns: 1fr 90px 90px;
    padding: 12px var(--sp-4);
    font-size: 13px;
  }

  .stat           { padding-right: var(--sp-5); }
  .stat-divider   { margin-right: var(--sp-5); }
  .stat-num       { font-size: 32px; }
}

/* ===== RESPECT REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}