/* ==========================================================================
   Enyoi LP — style.css
   Monotone × Champagne Gold
   ========================================================================== */

/* --------------------------------------------------------------------------
   Custom Properties
   -------------------------------------------------------------------------- */
:root {
  --color-white: #FFFFFF;
  --color-off-white: #F8F7F5;
  --color-gray-100: #EFEFED;
  --color-gray-200: #E2E0DC;
  --color-gray-400: #B0AEA9;
  --color-gray-600: #6E6C68;
  --color-gray-800: #3A3835;
  --color-black: #111110;

  --color-gold: #C9A96E;
  --color-gold-light: #E8D9BB;
  --color-gold-dark: #A8853E;

  --font-display: 'Cormorant Garamond', 'Noto Serif JP', Georgia, serif;
  --font-body: 'Noto Serif JP', 'Hiragino Mincho ProN', Georgia, serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;

  --max-width: 1280px;
  --header-h: 72px;
}

/* --------------------------------------------------------------------------
   Reset
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  -webkit-font-smoothing: antialiased;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-black);
  background: var(--color-white);
  overflow-x: hidden;
}

img,
picture,
video,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

ul[role="list"] {
  list-style: none;
  padding: 0;
}

button {
  cursor: pointer;
  font: inherit;
  border: none;
  background: none;
}

/* --------------------------------------------------------------------------
   Accessibility
   -------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  top: -60px;
  left: 1rem;
  padding: 0.75rem 1.25rem;
  background: var(--color-black);
  color: var(--color-white);
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  text-decoration: none;
  z-index: 9999;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 1rem;
}

/* --------------------------------------------------------------------------
   Layout helpers
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

@media (min-width: 768px) {
  .container {
    padding-inline: 3rem;
  }
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
  height: var(--header-h);
}

.header-inner {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .header-inner {
    padding-inline: 3rem;
  }
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.625rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--color-black);
  text-decoration: none;
}

/* Desktop nav */
.header-nav {
  display: none;
}

@media (min-width: 900px) {
  .header-nav {
    display: block;
    margin-left: auto;
  }

  .header-nav ul {
    display: flex;
    align-items: center;
    gap: 0.25rem;
  }

  .header-nav a {
    display: inline-block;
    padding: 0.5rem 0.875rem;
    font-size: 0.875rem;
    letter-spacing: 0.08em;
    color: var(--color-gray-600);
    text-decoration: none;
    transition: color 0.2s ease;
  }

  .header-nav a:hover {
    color: var(--color-black);
  }

  .header-nav a:focus-visible {
    outline: 2px solid var(--color-gold);
    outline-offset: 2px;
    border-radius: 2px;
  }
}

.btn-dl {
  padding: 0.5rem 1.25rem !important;
  background: var(--color-black) !important;
  color: var(--color-white) !important;
  border-radius: 2px;
  font-size: 0.8rem !important;
  letter-spacing: 0.1em !important;
  transition: background 0.2s ease !important;
}

.btn-dl:hover {
  background: var(--color-gray-800) !important;
}

/* Hamburger */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 4px;
}

@media (min-width: 900px) {
  .nav-toggle {
    display: none;
  }
}

.hamburger {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--color-black);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle[aria-expanded="true"] .hamburger:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .hamburger:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .hamburger:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile nav */
.mobile-nav {
  background: var(--color-white);
  border-top: 1px solid var(--color-gray-200);
  padding: 1.5rem;
}

.mobile-nav ul {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.mobile-nav a {
  display: block;
  padding: 0.75rem 0.5rem;
  font-size: 1rem;
  letter-spacing: 0.08em;
  color: var(--color-gray-800);
  text-decoration: none;
  border-bottom: 1px solid var(--color-gray-100);
}

.mobile-nav a:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn-primary {
  display: inline-block;
  padding: 0.875rem 2rem;
  background: var(--color-black);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-decoration: none;
  text-transform: uppercase;
  border: 1px solid var(--color-black);
  transition: background 0.25s ease, color 0.25s ease;
}

.btn-primary:hover {
  background: var(--color-white);
  color: var(--color-black);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 3px;
}

.btn-primary.btn-large {
  padding: 1.125rem 2.75rem;
  font-size: 0.9rem;
}

.btn-secondary {
  display: inline-block;
  padding: 0.875rem 2rem;
  background: transparent;
  color: var(--color-black);
  font-size: 0.875rem;
  letter-spacing: 0.12em;
  text-decoration: none;
  text-transform: uppercase;
  border: 1px solid var(--color-gray-400);
  transition: border-color 0.25s ease, color 0.25s ease;
}

.btn-secondary:hover {
  border-color: var(--color-black);
  color: var(--color-black);
}

.btn-secondary:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 3px;
}

/* --------------------------------------------------------------------------
   Section commons
   -------------------------------------------------------------------------- */
.section-header {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.section-eyebrow {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.75rem);
  font-weight: 300;
  letter-spacing: 0.06em;
  color: var(--color-black);
  line-height: 1.2;
}

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
.hero {
  min-height: calc(100svh - var(--header-h));
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto 1fr;
  background: var(--color-off-white);
  position: relative;
  overflow: hidden;
}

@media (min-width: 900px) {
  .hero {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr;
    min-height: calc(100svh - var(--header-h));
  }
}

.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.5rem;
  padding: 4rem 1.5rem 3rem;
  position: relative;
  z-index: 2;
}

@media (min-width: 900px) {
  .hero-content {
    padding: 5rem 4rem 5rem max(3rem, calc((100vw - var(--max-width)) / 2 + 3rem));
  }
}

.hero-eyebrow {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.hero-title {
  display: flex;
  flex-direction: column;
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 8vw, 6.5rem);
  font-weight: 300;
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--color-black);
}

.hero-title-en {
  display: block;
}

.hero-subtitle {
  font-size: 0.9375rem;
  color: var(--color-gray-600);
  line-height: 1.85;
  max-width: 400px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin-top: 0.5rem;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.meta-item {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--color-gray-400);
  text-transform: uppercase;
}

.meta-divider {
  color: var(--color-gray-200);
}

.hero-visual {
  position: relative;
  overflow: hidden;
  background: var(--color-gray-100);
  min-height: 45vw;
}

@media (min-width: 900px) {
  .hero-visual {
    min-height: unset;
  }
}

.hero-img-wrap {
  position: absolute;
  inset: 0;
  padding: 2rem 0;
  background: var(--color-white);
}

.hero-img-wrap img {
  width: auto;
  height: 100%;
  object-fit: cover;
  object-position: left center;
  filter: grayscale(100%);
  transition: filter 0.6s ease;
}

.hero-img-wrap:hover img {
  filter: grayscale(60%);
}

.hero-deco-line {
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(to bottom, transparent, var(--color-gold) 40%, transparent);
  z-index: 2;
}

/* --------------------------------------------------------------------------
   Features
   -------------------------------------------------------------------------- */
.features {
  padding: var(--space-xl) 0;
  background: var(--color-white);
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--color-gray-200);
  border: 1px solid var(--color-gray-200);
}

@media (min-width: 640px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  background: var(--color-white);
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: background 0.2s ease;
}

.feature-card:hover {
  background: var(--color-off-white);
}

.feature-icon {
  color: var(--color-gold);
  width: 32px;
  height: 32px;
}

.feature-title {
  font-family: var(--font-display);
  font-size: 1.1875rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--color-black);
}

.feature-desc {
  font-size: 0.875rem;
  color: var(--color-gray-600);
  line-height: 1.8;
}

/* --------------------------------------------------------------------------
   Demo
   -------------------------------------------------------------------------- */
.demo {
  padding: var(--space-xl) 0;
  background: var(--color-off-white);
}

.demo-showcase {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin: 0 0 var(--space-md);
  padding-inline: 1.5rem;
}

@media (min-width: 768px) {
  .demo-showcase {
    grid-template-columns: 3fr 2fr;
    padding-inline: 3rem;
    max-width: var(--max-width);
    margin-inline: auto;
    margin-bottom: var(--space-md);
  }
}

.demo-figure {
  margin: 0;
  overflow: hidden;
  background: var(--color-gray-100);
  border: 1px solid var(--color-gray-200);
}

.demo-figure img {
  width: 100%;
  filter: grayscale(20%);
  transition: filter 0.4s ease, transform 0.4s ease;
}

.demo-figure--main img {
  height: 100%;
  object-fit: cover;
}

.demo-figure--sub img {
  height: auto;
}

.demo-figure:hover img {
  filter: grayscale(0%);
  transform: scale(1.02);
}

.demo-figure figcaption {
  padding: 0.75rem 1rem;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--color-gray-400);
  text-transform: uppercase;
  border-top: 1px solid var(--color-gray-200);
}

.demo-screenshot-wrap {
  margin-top: var(--space-md);
}

.screenshot-figure {
  margin: 0;
  border: 1px solid var(--color-gray-200);
  overflow: hidden;
  background: var(--color-gray-100);
}

.screenshot-figure img {
  width: 100%;
  filter: grayscale(10%);
  transition: filter 0.4s ease;
}

.screenshot-figure:hover img {
  filter: grayscale(0%);
}

.screenshot-figure figcaption {
  padding: 0.75rem 1.25rem;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--color-gray-400);
  text-transform: uppercase;
  border-top: 1px solid var(--color-gray-200);
}

/* --------------------------------------------------------------------------
   About
   -------------------------------------------------------------------------- */
.about {
  padding: var(--space-xl) 0;
  background: var(--color-white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: 3fr 2fr;
  }
}

.about-text {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.about-text p {
  font-size: 0.9375rem;
  color: var(--color-gray-600);
  line-height: 1.9;
}

.about-text strong {
  color: var(--color-black);
  font-weight: 600;
}

.about-specs {
  margin-top: var(--space-sm);
  border-top: 1px solid var(--color-gray-200);
}

.spec-row {
  display: grid;
  grid-template-columns: 10rem 1fr;
  padding: 0.875rem 0;
  border-bottom: 1px solid var(--color-gray-100);
  gap: 1rem;
}

.spec-row dt {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gray-400);
}

.spec-row dd {
  font-size: 0.9375rem;
  color: var(--color-gray-800);
}

.about-cta-box {
  background: var(--color-black);
  color: var(--color-white);
  padding: 3rem 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: flex-start;
  position: relative;
  overflow: hidden;
}

.about-cta-box::before {
  content: '';
  position: absolute;
  bottom: -2rem;
  right: -2rem;
  width: 12rem;
  height: 12rem;
  border-radius: 50%;
  background: rgba(201, 169, 110, 0.08);
  pointer-events: none;
}

.cta-label {
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.cta-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 300;
  line-height: 1.3;
  letter-spacing: 0.03em;
  color: var(--color-white);
}

.about-cta-box .btn-primary {
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: var(--color-black);
}

.about-cta-box .btn-primary:hover {
  background: var(--color-white);
  border-color: var(--color-white);
  color: var(--color-black);
}

.cta-note {
  font-size: 0.8rem;
  color: var(--color-gray-400);
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   CTA Banner
   -------------------------------------------------------------------------- */
.cta-banner {
  padding: var(--space-xl) 0;
  background: var(--color-off-white);
  border-top: 1px solid var(--color-gray-200);
  border-bottom: 1px solid var(--color-gray-200);
}

.cta-banner .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 2rem;
}

.cta-banner-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 300;
  letter-spacing: 0.04em;
  line-height: 1.25;
  color: var(--color-black);
}

.cta-banner-title em {
  font-style: italic;
  color: var(--color-gold-dark);
}

.cta-banner-note {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gray-400);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--color-black);
  color: var(--color-gray-400);
  padding: 3rem 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: var(--color-white);
}

.footer-nav ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.25rem 1rem;
}

.footer-nav a {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-decoration: none;
  color: var(--color-gray-400);
  transition: color 0.2s ease;
}

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

.footer-nav a:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 2px;
}

.footer-copy {
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--color-gray-600);
}

.footer-copy a {
  color: var(--color-gray-400);
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}

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

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: no-preference) {

  .hero-content,
  .hero-visual,
  .section-header,
  .feature-card,
  .demo-figure,
  .screenshot-figure,
  .about-grid>* {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }

  .hero-visual {
    transform: translateX(24px);
  }

  .is-visible {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* --------------------------------------------------------------------------
   Focus visible global
   -------------------------------------------------------------------------- */
:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 2px;
}