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

:root {
  --bg: #0D0D0D;
  --surface: #141414;
  --surface-2: #1C1C1C;
  --fg: #F5F5F0;
  --fg-muted: #8A8A85;
  --accent: #C8FF00;
  --accent-dim: #9BBF00;
  --warm: #FF6B35;
  --font-display: 'Bebas Neue', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* === NAV === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 32px;
  background: rgba(13,13,13,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(200,255,0,0.08);
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: 0.08em;
  color: var(--fg);
}

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

.nav-tagline {
  font-size: 12px;
  color: var(--fg-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* === HERO === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 80px 32px 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(200,255,0,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200,255,0,0.03) 1px, transparent 1px);
  background-size: 64px 64px;
}

.hero-glow {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle at center, rgba(200,255,0,0.08) 0%, transparent 65%);
  border-radius: 50%;
}

.hero-content {
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--accent);
  background: rgba(200,255,0,0.08);
  border: 1px solid rgba(200,255,0,0.2);
  padding: 6px 14px;
  border-radius: 2px;
  margin-bottom: 32px;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(72px, 12vw, 160px);
  line-height: 0.9;
  letter-spacing: 0.02em;
  color: var(--fg);
  margin-bottom: 32px;
}

.headline-outline {
  color: transparent;
  -webkit-text-stroke: 2px var(--accent);
}

.hero-sub {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--fg-muted);
  max-width: 520px;
  margin-bottom: 48px;
  font-weight: 300;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
}

.stat { display: flex; flex-direction: column; gap: 2px; }

.stat-num {
  font-family: var(--font-display);
  font-size: 48px;
  color: var(--accent);
  line-height: 1;
}

.stat-label {
  font-size: 11px;
  color: var(--fg-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.stat-div {
  width: 1px;
  height: 48px;
  background: rgba(200,255,0,0.2);
}

/* === SECTION LABEL === */
.section-label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 20px;
}

/* === PROBLEM === */
.problem {
  padding: 120px 32px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.problem-inner { max-width: 1280px; margin: 0 auto; }

.problem-header { margin-bottom: 64px; }

.problem-header h2 {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.1;
  letter-spacing: 0.02em;
  max-width: 700px;
  color: var(--fg);
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.problem-card {
  background: var(--surface);
  border: 1px solid rgba(255,255,255,0.06);
  padding: 36px;
  border-radius: 4px;
  border-left: 3px solid var(--warm);
}

.problem-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 20px;
}

.icon-clock {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid var(--warm);
  position: relative;
}
.icon-clock::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 14px; height: 2px;
  background: var(--warm);
  transform: translate(-30%, -50%);
  transform-origin: left center;
  transform: rotate(45deg) translate(-30%, -50%);
}
.icon-clock::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 10px; height: 2px;
  background: var(--warm);
  transform-origin: left center;
  transform: rotate(-90deg) translate(-50%, -30%);
}

.icon-block {
  width: 40px;
  height: 40px;
  position: relative;
}
.icon-block::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 2px solid var(--warm);
  border-radius: 6px;
  transform: rotate(-5deg);
}
.icon-block::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 20px; height: 3px;
  background: var(--warm);
  transform: translate(-50%, -50%) rotate(45deg);
}

.icon-voice {
  width: 40px;
  height: 40px;
  border: 2px solid var(--warm);
  border-radius: 50% 50% 50% 0;
  transform: rotate(-30deg);
}

.problem-card p { font-size: 15px; color: var(--fg-muted); line-height: 1.6; }

/* === HOW === */
.how { padding: 120px 32px; background: var(--surface); }

.how-inner { max-width: 1280px; margin: 0 auto; }

.how-title {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 64px);
  margin-bottom: 72px;
  letter-spacing: 0.02em;
}

.steps {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
}

.step {
  flex: 1;
  min-width: 220px;
}

.step-num {
  font-family: var(--font-display);
  font-size: 72px;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 16px;
}

.step h3 {
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}

.step p { font-size: 14px; color: var(--fg-muted); line-height: 1.6; }

.step-arrow {
  flex-shrink: 0;
  padding: 0 24px;
  display: flex;
  align-items: center;
}

/* === FEATURES === */
.features { padding: 120px 32px; }

.features-inner { max-width: 1280px; margin: 0 auto; }

.features-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 56px);
  margin-bottom: 56px;
  max-width: 600px;
  letter-spacing: 0.02em;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.06);
}

.feature-card {
  background: var(--surface);
  padding: 48px 40px;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
}

.feature-card--social::before { background: linear-gradient(90deg, #C8FF00, #7DDC00); }
.feature-card--email::before { background: linear-gradient(90deg, #FF6B35, #FF9A5C); }
.feature-card--workout::before { background: linear-gradient(90deg, #4ECDC4, #2ABFAD); }
.feature-card--tips::before { background: linear-gradient(90deg, #FFE66D, #F5D040); }

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 28px;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}

.feature-card p { font-size: 14px; color: var(--fg-muted); margin-bottom: 24px; line-height: 1.7; }

.feature-tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--fg-muted);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 4px 10px;
  border-radius: 2px;
}

.feature-icon-social, .feature-icon-email, .feature-icon-workout, .feature-icon-tips {
  width: 48px;
  height: 48px;
  margin-bottom: 24px;
  border-radius: 8px;
}
.feature-icon-social { background: rgba(200,255,0,0.1); border: 1px solid rgba(200,255,0,0.2); }
.feature-icon-email { background: rgba(255,107,53,0.1); border: 1px solid rgba(255,107,53,0.2); }
.feature-icon-workout { background: rgba(78,205,196,0.1); border: 1px solid rgba(78,205,196,0.2); }
.feature-icon-tips { background: rgba(255,230,109,0.1); border: 1px solid rgba(255,230,109,0.2); }

/* === PREVIEW === */
.preview { padding: 120px 32px; background: var(--surface); }

.preview-inner { max-width: 1280px; margin: 0 auto; }

.preview h2 {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 56px);
  margin-bottom: 48px;
  letter-spacing: 0.02em;
}

.preview-window {
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  overflow: hidden;
  max-width: 800px;
  background: var(--bg);
  box-shadow: 0 40px 80px rgba(0,0,0,0.4);
}

.preview-bar {
  background: var(--surface-2);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.preview-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.12);
}

.preview-label {
  font-size: 12px;
  color: var(--fg-muted);
  margin-left: 12px;
}

.preview-body { padding: 32px; }

.preview-input, .preview-output { margin-bottom: 24px; }

.input-label, .output-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 8px;
}

.input-text {
  background: var(--surface-2);
  padding: 16px;
  border-radius: 4px;
  font-size: 13px;
  color: var(--fg-muted);
  border-left: 2px solid var(--accent);
}

.preview-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.divider-line {
  flex: 1;
  height: 1px;
  background: rgba(255,255,255,0.08);
}

.divider-label {
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.output-text {
  font-size: 14px;
  color: var(--fg);
  margin-bottom: 8px;
  line-height: 1.7;
}

.output-tags {
  font-size: 11px;
  color: var(--fg-muted);
  margin-top: 12px;
  letter-spacing: 0.05em;
}

/* === CLOSING === */
.closing { padding: 140px 32px; }

.closing-inner { max-width: 1280px; margin: 0 auto; }

.closing-content { max-width: 700px; }

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(56px, 8vw, 112px);
  line-height: 0.9;
  letter-spacing: 0.02em;
  margin-bottom: 32px;
}

.closing p { font-size: 18px; color: var(--fg-muted); line-height: 1.7; margin-bottom: 48px; }

.closing-vision {
  border-left: 2px solid var(--accent);
  padding-left: 24px;
}

.vision-label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 12px;
}

.closing-vision p { font-size: 14px; color: var(--fg-muted); font-style: italic; }

/* === FOOTER === */
.footer {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 48px 32px;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
  display: block;
}

.footer-brand p { font-size: 13px; color: var(--fg-muted); }

.footer-meta { font-size: 12px; color: var(--fg-muted); }

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .hero { padding: 100px 24px 60px; }
  .hero-headline { font-size: 64px; }
  .headline-outline { -webkit-text-stroke: 1.5px var(--accent); }
  .hero-stats { gap: 20px; }
  .stat-num { font-size: 36px; }
  .stat-div { height: 36px; }

  .problem { padding: 80px 24px; }
  .how { padding: 80px 24px; }
  .features { padding: 80px 24px; }
  .preview { padding: 80px 24px; }
  .closing { padding: 80px 24px; }

  .steps { flex-direction: column; gap: 40px; }
  .step-arrow { transform: rotate(90deg); padding: 0; }

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

  .closing h2 { font-size: 56px; }

  .footer-inner { flex-direction: column; gap: 24px; text-align: center; }
  .footer-brand p { display: none; }
}

@media (max-width: 480px) {
  .nav { padding: 0 16px; }
  .nav-tagline { display: none; }
  .hero { padding: 80px 16px 48px; }
  .hero-headline { font-size: 52px; }
}