/* ==========================================================================
   ippo — css/style.css
   Brand: white bg + pink (#E63FA8) accent + dark plum (#3D2E3A)
   ========================================================================== */

/* --------------------------------------------------------------------------
   0. CSS Custom Properties
   -------------------------------------------------------------------------- */
:root {
  --color-pink:        #E63FA8;
  --color-pink-hover:  #C02E8E;
  --color-plum:        #3D2E3A;
  --color-plum-light:  #6B5468;
  --color-bg:          #FFFFFF;
  --color-bg-tint:     #FFF5FA;
  --color-text:        #3D2E3A;
  --color-text-light:  #6B5468;
  --color-border:      rgba(230, 63, 168, 0.12);

  --font-serif-en:  'Cormorant Garamond', Georgia, serif;
  --font-serif-jp:  'Noto Serif JP', serif;
  --font-sans-jp:   'Noto Sans JP', sans-serif;

  --container-max:  1080px;
  --section-py:     5rem;
  --radius-card:    12px;
  --transition:     0.25s ease;
}

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

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

body {
  font-family: var(--font-sans-jp);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* --------------------------------------------------------------------------
   2. Utilities
   -------------------------------------------------------------------------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 2rem;
}

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

.section {
  padding: var(--section-py) 0;
}

/* --------------------------------------------------------------------------
   3. Typography — shared section elements
   -------------------------------------------------------------------------- */
.section-title {
  font-family: var(--font-serif-jp);
  font-size: clamp(1.375rem, 3vw, 1.875rem);
  font-weight: 400;
  letter-spacing: 0.04em;
  line-height: 1.5;
  color: #3D2E3A;
  margin-bottom: 1.25rem;
}

.section-desc {
  font-family: var(--font-sans-jp);
  font-size: 1rem;
  color: var(--color-text-light);
  line-height: 1.9;
  margin-bottom: 2rem;
}

/* --------------------------------------------------------------------------
   4. Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: 9999px;
  font-family: var(--font-sans-jp);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  border: 2px solid transparent;
  transition: background-color var(--transition), border-color var(--transition),
              transform var(--transition), box-shadow var(--transition), color var(--transition);
  text-align: center;
  line-height: 1;
}

.btn-primary {
  background-color: #E63FA8;
  color: #FFFFFF;
  border-color: #E63FA8;
}

.btn-primary:hover {
  background-color: #C02E8E;
  border-color: #C02E8E;
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(230, 63, 168, 0.25);
}

.btn-large {
  padding: 1rem 2.5rem;
  font-size: 1rem;
}

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
}

/* --------------------------------------------------------------------------
   5. Header & Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(230, 63, 168, 0.08);
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 2px 20px rgba(61, 46, 58, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

/* Logo */
.site-logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-decoration: none;
}

.logo-text {
  display: inline;
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 1.5rem;
  font-weight: 500;
  color: #3D2E3A;
  letter-spacing: 0.08em;
  line-height: 1;
}

.logo-i {
  color: #E63FA8;
}

.logo-sub {
  font-family: 'Noto Serif JP', serif;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: #6B5468;
  line-height: 1;
  display: block;
  margin-top: 2px;
}

/* Primary nav */
.nav-primary { display: flex; }

.nav-list {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-family: var(--font-sans-jp);
  font-size: 0.875rem;
  color: var(--color-plum-light);
  letter-spacing: 0.04em;
  position: relative;
  transition: color var(--transition);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 1px;
  background-color: #E63FA8;
  transform: scaleX(0);
  transition: transform var(--transition);
}

.nav-link:hover {
  color: #E63FA8;
}

.nav-link:hover::after {
  transform: scaleX(1);
}

/* Hamburger toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.hamburger {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-plum);
  border-radius: 9999px;
  transition: transform var(--transition), opacity var(--transition);
}

/* Mobile nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  background-color: #FFFFFF;
  border-bottom: 1px solid var(--color-border);
  z-index: 99;
  padding: 1.5rem 2rem;
}

.mobile-nav.is-open {
  display: block;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.mobile-nav-link {
  font-size: 1rem;
  color: var(--color-text);
  letter-spacing: 0.04em;
}

/* --------------------------------------------------------------------------
   6. Section 1: Hero
   -------------------------------------------------------------------------- */
.hero-section {
  position: relative;
  height: 100svh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(61, 46, 58, 0.25) 0%,
    rgba(61, 46, 58, 0.10) 50%,
    rgba(61, 46, 58, 0.30) 100%
  );
  z-index: 0;
}


.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: #FFFFFF;
  padding-top: 68px; /* header offset */
}

.hero-title {
  font-family: var(--font-serif-jp);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 400;
  letter-spacing: 0.06em;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.3);
}

.hero-sub {
  font-family: var(--font-sans-jp);
  font-size: clamp(0.875rem, 2vw, 1.0625rem);
  font-weight: 300;
  letter-spacing: 0.04em;
  line-height: 2;
  opacity: 0.92;
  margin-bottom: 2.5rem;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
}

/* Scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.7);
  z-index: 1;
}

.scroll-text {
  font-family: var(--font-serif-en);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.scroll-line {
  display: block;
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.7), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.5; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.15); }
}

/* --------------------------------------------------------------------------
   7. Section 2: Pillars / Concept
   -------------------------------------------------------------------------- */
.pillars-section {
  background-color: #FFFFFF;
}

.pillars-section .section-title {
  margin-bottom: 3rem;
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.pillar-card {
  position: relative;
  background: #FFFFFF;
  border: 1px solid rgba(230, 63, 168, 0.12);
  border-radius: var(--radius-card);
  padding: 2rem 1.75rem;
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}

.pillar-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: #E63FA8;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.pillar-card:hover {
  box-shadow: 0 8px 32px rgba(230, 63, 168, 0.10);
  transform: translateY(-2px);
}

.pillar-card:hover::before {
  transform: scaleX(1);
}

.pillar-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.pillar-icon.body,
.pillar-icon.food,
.pillar-icon.mind {
  background-color: #FFF5FA;
}

.pillar-title {
  font-family: var(--font-serif-jp);
  font-size: 1.125rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--color-plum);
  margin-bottom: 0.75rem;
}

.pillar-desc {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 1.25rem;
}

.pillar-link {
  font-size: 0.875rem;
  color: #E63FA8;
  letter-spacing: 0.04em;
  transition: opacity var(--transition);
}

.pillar-link:hover {
  opacity: 0.75;
}

/* --------------------------------------------------------------------------
   8. Section 3: App Introduction (NEW)
   -------------------------------------------------------------------------- */
.app-intro-section {
  background-color: #FFF5FA;
  padding: 5rem 0;
}

.app-intro-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 2rem;
}

.app-intro-content .section-title {
  margin-bottom: 1rem;
}

.app-intro-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 2rem 0;
}

.app-intro-feature {
  font-size: 0.9375rem;
  color: #4A3B48;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.app-intro-mockup {
  display: flex;
  justify-content: center;
}

.app-mockup-frame {
  width: 260px;
  height: 520px;
  border-radius: 36px;
  border: 2px solid rgba(230, 63, 168, 0.20);
  background: #FFFFFF;
  box-shadow: 0 20px 60px rgba(61, 46, 58, 0.10);
  padding: 2.5rem 1.25rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  position: relative;
  overflow: hidden;
}

.app-mockup-notch {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: rgba(230, 63, 168, 0.20);
  border-radius: 9999px;
}

.app-mockup-card {
  background: #FFF5FA;
  border-radius: 12px;
  padding: 0.75rem 1rem;
  border: 1px solid rgba(230, 63, 168, 0.08);
}

.app-mockup-card-label {
  font-size: 0.625rem;
  letter-spacing: 0.12em;
  color: #E63FA8;
  margin-bottom: 0.25rem;
  text-transform: uppercase;
  font-family: var(--font-serif-en);
}

.app-mockup-card-value {
  font-size: 0.8rem;
  color: #3D2E3A;
  font-family: var(--font-sans-jp);
}

/* --------------------------------------------------------------------------
   9. Section 4: CTA
   -------------------------------------------------------------------------- */
.cta-section {
  background-color: #FFFFFF;
}

.cta-inner {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}

.cta-inner .section-title {
  margin-bottom: 1rem;
}

.cta-inner .section-desc {
  margin-bottom: 2rem;
}

.cta-note {
  margin-top: 1rem;
  font-size: 0.8125rem;
  color: var(--color-text-light);
  letter-spacing: 0.04em;
}

/* --------------------------------------------------------------------------
   10. Section 5: Profile
   -------------------------------------------------------------------------- */
.profile-section {
  background-color: #FFF5FA;
}

.profile-grid {
  display: flex;
  align-items: center;
  gap: 3rem;
  max-width: 800px;
  margin: 0 auto;
}

.profile-image img {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(230, 63, 168, 0.20);
  flex-shrink: 0;
}

.profile-text .section-title {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.profile-text p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.9;
}

.profile-motto {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-style: italic;
  color: #E63FA8;
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  margin-top: 1rem;
}

/* --------------------------------------------------------------------------
   11. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: #3D2E3A;
  color: rgba(255, 255, 255, 0.75);
  padding: 3rem 0 2rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  justify-content: center;
  margin-bottom: 2rem;
}

.footer-link {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.65);
  letter-spacing: 0.04em;
  transition: color var(--transition);
}

.footer-link:hover {
  color: #E63FA8;
}

.footer-disclaimer {
  max-width: 680px;
  margin: 0 auto 2rem;
}

.footer-disclaimer summary {
  cursor: pointer;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.04em;
  text-align: center;
  margin-bottom: 0.75rem;
}

.footer-disclaimer-body {
  font-size: 0.75rem;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.45);
  text-align: center;
}

.footer-disclaimer-body p + p {
  margin-top: 0.75rem;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.footer-copy {
  text-align: center;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.35);
  letter-spacing: 0.06em;
}

/* --------------------------------------------------------------------------
   12. Responsive — Tablet (max 1024px)
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .pillars-grid {
    gap: 1.25rem;
  }
}

/* --------------------------------------------------------------------------
   13. Responsive — Mobile (max 768px)
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {

  :root { --section-py: 3.5rem; }

  /* Header */
  .nav-primary { display: none; }

  .nav-toggle {
    display: flex;
  }

  /* Pillars */
  .pillars-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  /* App intro */
  .app-intro-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .app-intro-features {
    grid-template-columns: 1fr;
    text-align: left;
    max-width: 300px;
    margin: 2rem auto;
  }

  .app-intro-mockup {
    display: none;
  }

  /* Profile */
  .profile-grid {
    flex-direction: column;
    text-align: center;
  }

  /* Footer */
  .footer-nav,
  .footer-legal {
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
  }
}

/* --------------------------------------------------------------------------
   14. Accessibility — reduced motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}