:root {
  --font-serif: "Instrument Serif", serif;
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  
  --bg-main: #faf9f6;
  --text-main: #2d262e;
  --text-soft: #6d5b70;
  
  --follicular-bg: #f1f8f1;
  --follicular-accent: #6cc78f;
  --ovulation-bg: #fff2f7;
  --ovulation-accent: #f2618f;
  --luteal-bg: #fcf4eb;
  --luteal-accent: #c77a47;
  --menstruation-bg: #1f2438;
  --menstruation-text: #eceef5;
  
  --glass: rgba(255, 255, 255, 0.65);
  --shadow: 0 20px 40px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 40px 80px rgba(75, 63, 80, 0.08);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
}

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

h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 400;
}

/* NAV */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px 8vw;
  position: sticky;
  top: 0;
  background: rgba(250, 249, 246, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 100;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-style: italic;
  letter-spacing: -0.5px;
}

/* BUTTONS */
.cta {
  background: var(--text-main);
  color: white;
  padding: 16px 32px;
  border-radius: 100px;
  font-weight: 500;
  font-size: 0.95rem;
  transition: transform 0.2s, box-shadow 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.cta:hover {
  transform: scale(1.03);
  box-shadow: 0 10px 30px rgba(45, 38, 46, 0.15);
}

.cta-small {
  padding: 12px 24px;
  font-size: 0.85rem;
}

.cta-large {
  padding: 20px 48px;
  font-size: 1.1rem;
}

.ghost {
  padding: 16px 32px;
  border-radius: 100px;
  border: 1px solid #ddd;
  background: white;
  font-weight: 500;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s, background 0.2s;
}

.ghost:hover {
  border-color: #bbb;
  background: #fefefe;
}

/* HERO */
.hero {
  padding: 60px 8vw 100px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, #fdebd4 0%, transparent 70%);
  top: -5vw;
  right: -5vw;
  opacity: 0.6;
  z-index: -1;
  filter: blur(80px);
}

.hero::after {
  content: "";
  position: absolute;
  width: 30vw;
  height: 30vw;
  background: radial-gradient(circle, #f8e8f0 0%, transparent 70%);
  bottom: 10%;
  left: 5%;
  opacity: 0.5;
  z-index: -1;
  filter: blur(60px);
}

.hero-content {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
  max-width: 1300px;
  margin: 0 auto;
}

.hero-copy {
  max-width: 600px;
  text-align: left;
}

.pill {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 100px;
  background: white;
  border: 1px solid #eee;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 24px;
  color: var(--text-soft);
}

.hero-copy .pill {
  display: inline-block;
}

.hero h1 {
  font-size: clamp(2.8rem, 5vw, 4.2rem);
  line-height: 1.05;
  margin-bottom: 24px;
  color: var(--text-main);
}

.subhead {
  color: var(--text-soft);
  font-size: 1.15rem;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: flex-start;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Hero Card */
.hero-card {
  background: var(--glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 36px;
  border-radius: 32px;
  width: 100%;
  max-width: 340px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: var(--shadow-lg);
  text-align: left;
  transform: rotate(-2deg);
  transition: transform 0.3s ease;
}

.hero-card:hover {
  transform: rotate(0deg) scale(1.02);
}

.card-title {
  font-size: 0.7rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-soft);
  margin-bottom: 12px;
}

.card-phase {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-style: italic;
  margin-bottom: 10px;
  color: var(--text-main);
}

.card-mantra {
  font-size: 1rem;
  color: var(--text-soft);
  margin-bottom: 28px;
  line-height: 1.5;
}

.card-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.stat-label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  display: block;
  margin-bottom: 4px;
  color: var(--text-soft);
}

.stat-value {
  font-size: 1.6rem;
  font-family: var(--font-serif);
}

/* SECTIONS */
.section {
  padding: 100px 8vw;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.section-header h2 {
  font-size: clamp(2.2rem, 4.5vw, 3.5rem);
  margin-bottom: 16px;
  line-height: 1.1;
}

.section-header p {
  color: var(--text-soft);
  font-size: 1.1rem;
}

/* FLOW STEPS */
.flow-section {
  background: white;
  margin: 0 4vw;
  border-radius: 48px;
}

.flow-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  max-width: 1100px;
  margin: 0 auto;
}

.flow-step {
  text-align: left;
}

.step-num {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  color: #f0e8f2;
  line-height: 1;
  display: block;
  margin-bottom: 16px;
}

.flow-step h3 {
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.flow-step p {
  color: var(--text-soft);
  line-height: 1.6;
}

/* LIFESTYLE */
.lifestyle-section {
  background: linear-gradient(180deg, var(--bg-main) 0%, #fdf8f5 100%);
}

.lifestyle-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

.lifestyle-text h2 {
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  line-height: 1.05;
  margin-bottom: 24px;
}

.lifestyle-lead {
  color: var(--text-soft);
  font-size: 1.15rem;
  margin-bottom: 40px;
  line-height: 1.7;
}

.benefit-list {
  list-style: none;
}

.benefit-list li {
  margin-bottom: 28px;
  padding-left: 20px;
  border-left: 2px solid #efe6f1;
}

.benefit-list strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 400;
  margin-bottom: 6px;
  color: var(--text-main);
}

.benefit-list li p,
.benefit-list li:not(:has(p)) {
  color: var(--text-soft);
  line-height: 1.5;
}

.lifestyle-visual {
  display: flex;
  justify-content: center;
}

.quote-card {
  background: white;
  padding: 48px;
  border-radius: 32px;
  box-shadow: var(--shadow-lg);
  max-width: 400px;
}

.quote-card blockquote {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-style: italic;
  line-height: 1.4;
  margin-bottom: 20px;
  color: var(--text-main);
}

.quote-attribution {
  font-size: 0.85rem;
  color: var(--text-soft);
}

/* PHASES */
.phases {
  background: var(--bg-main);
}

.phase-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.phase-card {
  padding: 32px 28px;
  border-radius: 28px;
  text-align: center;
  transition: transform 0.3s;
}

.phase-card:hover {
  transform: translateY(-8px);
}

.phase-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.phase-card h3 {
  font-size: 1.5rem;
  margin-bottom: 4px;
  font-style: italic;
}

.phase-subtitle {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  opacity: 0.6;
  margin-bottom: 12px;
}

.phase-card > p:not(.phase-subtitle) {
  font-size: 0.9rem;
  opacity: 0.85;
  margin-bottom: 20px;
  line-height: 1.5;
}

.phase-tasks {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.phase-tasks span {
  font-size: 0.7rem;
  padding: 6px 12px;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.5);
}

.spring { background: var(--follicular-bg); }
.summer { background: var(--ovulation-bg); }
.autumn { background: var(--luteal-bg); }
.winter { background: var(--menstruation-bg); color: var(--menstruation-text); }
.winter .phase-tasks span { background: rgba(255, 255, 255, 0.1); }

/* FEATURES */
.features-section {
  background: white;
  margin: 0 4vw;
  border-radius: 48px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  max-width: 1100px;
  margin: 0 auto;
}

.feature-card {
  text-align: center;
  padding: 32px 24px;
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-soft);
  line-height: 1.5;
}

/* CTA SECTION */
.cta-section {
  background: linear-gradient(180deg, #fdf5f8 0%, #fef8f5 100%);
  padding: 120px 8vw;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.cta-section h2 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  max-width: 600px;
  line-height: 1.1;
}

.cta-section p {
  font-size: 1.15rem;
  color: var(--text-soft);
  max-width: 500px;
}

.cta-note {
  font-size: 0.8rem;
  color: var(--text-soft);
  margin-top: 8px;
}

/* FOOTER */
.footer {
  padding: 60px 8vw;
  border-top: 1px solid #eee;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-soft);
  margin-top: 8px;
}

.footer-links {
  display: flex;
  gap: 32px;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-soft);
  transition: color 0.2s;
}

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

/* RESPONSIVE */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
  
  .phase-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .flow-steps {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .flow-step {
    text-align: center;
  }
}

@media (max-width: 900px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 48px;
  }
  
  .hero-copy {
    max-width: 100%;
    text-align: center;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .hero-card {
    transform: none;
    max-width: 320px;
    margin: 0 auto;
  }
  
  .hero-card:hover {
    transform: scale(1.02);
  }
  
  .lifestyle-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  
  .lifestyle-text {
    text-align: center;
  }
  
  .benefit-list li {
    text-align: left;
  }
}

@media (max-width: 768px) {
  .phase-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .footer-content {
    flex-direction: column;
    gap: 24px;
    text-align: center;
  }
  
  .flow-section,
  .features-section {
    margin: 0;
    border-radius: 0;
  }
}