/* ============================================
   TAWAMURE / SUUG Corporate Website
   Design: TENGA-inspired minimalist wellness
   ============================================ */

:root {
  --color-bg: #fafaf9;
  --color-white: #ffffff;
  --color-black: #111010;
  --color-text: #1a1a1a;
  --color-text-light: #666666;
  --color-text-muted: #999999;
  --color-primary: #c9647a;
  --color-primary-light: #e8a0b0;
  --color-primary-pale: #fdf0f2;
  --color-secondary: #8b6b7a;
  --color-accent: #f0d4da;
  --color-border: #e8e0e2;
  --color-surface: #f5f0f2;

  --font-sans: 'Inter', 'Noto Sans JP', sans-serif;
  --font-ja: 'Noto Sans JP', sans-serif;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 40px;
  --radius-full: 9999px;

  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.08);
  --shadow-lg: 0 24px 64px rgba(0,0,0,0.1);
  --shadow-glow: 0 0 60px rgba(201,100,122,0.2);

  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  --container: 1100px;
  --nav-height: 72px;
}

/* ============ RESET ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ============ UTILITIES ============ */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

.section__eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--color-text);
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 4px 20px rgba(201,100,122,0.35);
}
.btn--primary:hover {
  background: #b5576d;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(201,100,122,0.45);
}

.btn--secondary {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}
.btn--secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn--large {
  padding: 18px 48px;
  font-size: 16px;
}

/* ============ HEADER / NAV ============ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(250,250,249,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--color-border);
}

.nav {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
}

.logo-brand {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-text);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav__links a {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-light);
  letter-spacing: 0.02em;
  transition: var(--transition);
}

.nav__links a:hover {
  color: var(--color-primary);
}

.nav__cta {
  background: var(--color-primary) !important;
  color: var(--color-white) !important;
  padding: 10px 24px;
  border-radius: var(--radius-full);
}
.nav__cta:hover {
  background: #b5576d !important;
  color: var(--color-white) !important;
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

.nav__mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--color-white);
  padding: 24px 32px;
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}
.nav__mobile.open { display: block; }
.nav__mobile ul { display: flex; flex-direction: column; gap: 16px; }
.nav__mobile a {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
  transition: var(--transition);
}
.nav__mobile a:hover { color: var(--color-primary); }

/* ============ HERO ============ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--nav-height);
}

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

.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
}
.hero__orb--1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, #fde8ed 0%, transparent 70%);
  top: -100px; right: -100px;
  animation: floatOrb 8s ease-in-out infinite;
}
.hero__orb--2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, #f5d0db 0%, transparent 70%);
  bottom: 0; left: -100px;
  animation: floatOrb 10s ease-in-out infinite reverse;
}
.hero__orb--3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, #e8c5d0 0%, transparent 70%);
  top: 50%; left: 40%;
  animation: floatOrb 12s ease-in-out infinite;
}

@keyframes floatOrb {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(30px, -20px); }
  66% { transform: translate(-20px, 30px); }
}

.hero__content {
  flex: 1;
  max-width: 580px;
  padding: 80px 32px 80px 64px;
  position: relative;
  z-index: 1;
}

.hero__eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.hero__title {
  display: flex;
  flex-direction: column;
  margin-bottom: 28px;
}

.hero__title-brand {
  font-size: clamp(5rem, 12vw, 9rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.9;
  color: var(--color-text);
}

.hero__title-sub {
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  font-weight: 300;
  letter-spacing: 0.3em;
  color: var(--color-text-light);
  margin-top: 8px;
}

.hero__tagline {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 40px;
  font-weight: 300;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero__visual {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 80px 32px;
  position: relative;
  z-index: 1;
}

.hero__product-img {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__img-glow {
  position: absolute;
  inset: -40px;
  background: radial-gradient(circle, rgba(201,100,122,0.18) 0%, transparent 65%);
  border-radius: 50%;
  animation: pulseGlow 4s ease-in-out infinite;
}

@keyframes pulseGlow {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.08); }
}

.hero__img {
  position: relative;
  width: 380px;
  max-width: 100%;
  filter: drop-shadow(0 32px 64px rgba(0,0,0,0.18));
  animation: floatImg 6s ease-in-out infinite;
  z-index: 1;
}

@keyframes floatImg {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 64px;
  display: flex;
  align-items: center;
  gap: 16px;
  z-index: 1;
}

.hero__scroll span {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.hero__scroll-line {
  width: 48px;
  height: 1px;
  background: var(--color-border);
  position: relative;
  overflow: hidden;
}

.hero__scroll-line::after {
  content: '';
  position: absolute;
  left: -100%;
  top: 0;
  width: 100%;
  height: 100%;
  background: var(--color-primary);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* ============ CONCEPT ============ */
.concept {
  padding: 120px 0;
  background: var(--color-white);
}

.concept__header {
  text-align: center;
  margin-bottom: 80px;
}

.concept__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.concept__lead {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 24px;
}

.concept__body {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.9;
  margin-bottom: 20px;
}

.concept__values {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.value-card {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 24px;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.value-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.value-card__icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  color: var(--color-primary);
}

.value-card__icon svg {
  width: 100%;
  height: 100%;
}

.value-card h3 {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-text);
  margin-bottom: 6px;
}

.value-card p {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ============ PRODUCT ============ */
.product {
  padding: 120px 0;
  background: var(--color-bg);
  overflow: hidden;
}

.product__header {
  text-align: center;
  margin-bottom: 16px;
}

.product__subtitle {
  font-size: 1rem;
  color: var(--color-text-light);
  margin-top: 8px;
  letter-spacing: 0.05em;
}

.product__showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  margin-top: 80px;
}

.product__visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 400px;
}

.product__img-wrap {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product__img {
  width: 320px;
  max-width: 100%;
  filter: drop-shadow(0 24px 48px rgba(0,0,0,0.15));
}

.product__badge {
  position: absolute;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary);
  box-shadow: var(--shadow-md);
  z-index: 2;
  letter-spacing: 0.05em;
}

.product__badge--1 { top: 20px; right: 20px; }
.product__badge--2 { bottom: 80px; right: 10px; }
.product__badge--3 { bottom: 30px; left: 40px; }

.product__catch h3 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 24px;
  color: var(--color-text);
}

.product__desc {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.9;
  margin-bottom: 32px;
}

.product__points {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 40px;
}

.product__points li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.product__point-icon {
  color: var(--color-primary);
  font-size: 10px;
  margin-top: 6px;
  flex-shrink: 0;
}

.product__points strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.product__points span {
  font-size: 13px;
  color: var(--color-text-light);
}

/* ============ FEATURES ============ */
.features {
  padding: 120px 0;
  background: var(--color-white);
}

.features__header {
  text-align: center;
  margin-bottom: 80px;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.feature-item {
  padding: 40px 32px;
  border-radius: var(--radius-lg);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-item::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-primary-pale), transparent);
  opacity: 0;
  transition: var(--transition);
}

.feature-item:hover {
  border-color: var(--color-primary-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-item:hover::before {
  opacity: 1;
}

.feature-item__number {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-primary);
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.feature-item__icon {
  width: 48px;
  height: 48px;
  color: var(--color-primary);
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.feature-item__icon svg {
  width: 100%;
  height: 100%;
}

.feature-item h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.feature-item p {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.8;
  position: relative;
  z-index: 1;
}

/* ============ MESSAGE ============ */
.message {
  padding: 120px 0;
  background: var(--color-text);
  position: relative;
  overflow: hidden;
}

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

.message__orb {
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(201,100,122,0.15) 0%, transparent 60%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
}

.message__content {
  text-align: center;
  position: relative;
  z-index: 1;
}

.message__quote {
  font-size: clamp(1.4rem, 3.5vw, 2.4rem);
  font-weight: 300;
  color: var(--color-white);
  line-height: 1.8;
  letter-spacing: 0.02em;
  margin-bottom: 32px;
}

.message__author {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.1em;
}

/* ============ COMPANY ============ */
.company {
  padding: 120px 0;
  background: var(--color-bg);
}

.company__header {
  margin-bottom: 64px;
}

.company__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.company__table {
  width: 100%;
  border-collapse: collapse;
}

.company__table th,
.company__table td {
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
  line-height: 1.8;
}

.company__table th {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  width: 30%;
  padding-right: 24px;
}

.company__table td {
  font-size: 14px;
  color: var(--color-text);
}

.company__table td a {
  color: var(--color-primary);
  transition: var(--transition);
}

.company__table td a:hover {
  opacity: 0.75;
}

.company__mission {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.mission-card {
  padding: 32px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.mission-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-sm);
}

.mission-card h3 {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.mission-card p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.9;
}

/* ============ CONTACT ============ */
.contact {
  padding: 120px 0;
  background: var(--color-primary-pale);
}

.contact__inner {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.contact__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  color: var(--color-text);
}

.contact__desc {
  font-size: 1rem;
  color: var(--color-text-light);
  margin-bottom: 40px;
}

/* ============ FOOTER ============ */
.footer {
  background: var(--color-text);
  color: var(--color-white);
  padding-top: 80px;
}

.footer__top {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 80px;
  padding-bottom: 64px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer__logo {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin-bottom: 12px;
}

.footer__tagline {
  font-size: 13px;
  color: rgba(255,255,255,0.4);
  line-height: 1.6;
}

.footer__links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.footer__col h4 {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-bottom: 20px;
}

.footer__col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__col a {
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  transition: var(--transition);
}

.footer__col a:hover {
  color: var(--color-white);
}

.footer__bottom {
  padding: 32px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.footer__notice {
  font-size: 11px;
  color: rgba(255,255,255,0.3);
  flex: 1;
}

.footer__copy {
  font-size: 11px;
  color: rgba(255,255,255,0.3);
  white-space: nowrap;
}

/* ============ SCROLL ANIMATIONS ============ */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(0.4,0,0.2,1), transform 0.7s cubic-bezier(0.4,0,0.2,1);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .hero__content { padding-left: 32px; }
  .concept__grid { gap: 48px; }
  .product__showcase { gap: 48px; }
  .features__grid { grid-template-columns: repeat(2, 1fr); }
  .company__layout { gap: 48px; }
}

@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__hamburger { display: flex; }

  .hero {
    flex-direction: column;
    padding-top: calc(var(--nav-height) + 40px);
    min-height: auto;
  }

  .hero__content {
    padding: 40px 24px;
    max-width: 100%;
  }

  .hero__visual {
    padding: 20px 24px 60px;
  }

  .hero__product-mockup {
    width: 260px;
    height: 260px;
  }

  .mockup__body { width: 220px; height: 220px; }
  .mockup__ring--1 { width: 220px; height: 220px; }
  .mockup__ring--2 { width: 170px; height: 170px; }
  .mockup__ring--3 { width: 120px; height: 120px; }

  .hero__scroll { left: 24px; }

  .concept { padding: 80px 0; }
  .concept__grid { grid-template-columns: 1fr; gap: 40px; }

  .product { padding: 80px 0; }
  .product__showcase { grid-template-columns: 1fr; gap: 48px; }
  .product__visual { height: 300px; }
  .product__circle--outer { width: 280px; height: 280px; }
  .product__circle--middle { width: 200px; height: 200px; }
  .product__circle--inner { width: 130px; height: 130px; }

  .features { padding: 80px 0; }
  .features__grid { grid-template-columns: 1fr; }

  .message { padding: 80px 0; }

  .company { padding: 80px 0; }
  .company__layout { grid-template-columns: 1fr; gap: 40px; }

  .contact { padding: 80px 0; }

  .footer__top { grid-template-columns: 1fr; gap: 40px; }
  .footer__links { grid-template-columns: repeat(2, 1fr); }
  .footer__bottom { flex-direction: column; align-items: flex-start; }

  .container { padding: 0 20px; }
}

@media (max-width: 480px) {
  .hero__title-brand { font-size: 4.5rem; }
  .footer__links { grid-template-columns: 1fr; }
  .hero__actions { flex-direction: column; }
}