/* ==========================================================================
   Homepage — home.css
   名前診断スタジオ — 和モダン × ぬくもり
   ========================================================================== */

/* =======================================================================
   Hero Section
   ======================================================================= */

.hero {
  position: relative;
  background:
    radial-gradient(ellipse 80% 50% at 20% 30%, rgba(255, 143, 163, 0.12) 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 80% 70%, rgba(110, 196, 168, 0.10) 0%, transparent 70%),
    linear-gradient(160deg, var(--color-cream) 0%, var(--color-cream-warm) 40%, var(--color-light-bg) 100%);
  padding: var(--space-16) var(--gutter) var(--space-24);
  text-align: center;
  overflow: hidden;
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* Organic curve at bottom via pseudo-element */
.hero::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 80px;
  background: var(--color-light-bg);
  clip-path: ellipse(60% 100% at 50% 100%);
}

/* Subtle background pattern — Japanese-inspired dots */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(
    circle at center,
    var(--color-card-border) 1px,
    transparent 1px
  );
  background-size: 32px 32px;
  opacity: 0.3;
  pointer-events: none;
}

/* Inner container for z-index stacking above pseudo-elements */
.hero__content {
  position: relative;
  z-index: 1;
  max-width: var(--container-form);
  margin: 0 auto;
}

/* Hero illustration background */
.hero__illustration {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 45%;
  max-width: 550px;
  opacity: 0.45;
  pointer-events: none;
  z-index: 0;
}

.hero__illustration-img {
  width: 100%;
  height: auto;
}

@media (max-width: 767px) {
  .hero__illustration {
    width: 65%;
    opacity: 0.25;
  }
}

/* Feature card icons with images */
.feature-icon img {
  width: 88px;
  height: 88px;
  object-fit: contain;
}

/* =======================================================================
   Hero Title
   ======================================================================= */

.hero-title {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: var(--weight-black);
  color: var(--color-dark);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-4);
  letter-spacing: var(--tracking-tight);
}

/* Accent color on part of the title */
.hero-title__accent {
  color: var(--color-terracotta);
  display: inline;
}

/* Decorative underline on title keyword */
.hero-title__keyword {
  position: relative;
  display: inline-block;
}

.hero-title__keyword::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: -4px;
  right: -4px;
  height: 8px;
  background-color: var(--color-gold-light);
  opacity: 0.6;
  border-radius: var(--radius-full);
  z-index: -1;
}

/* =======================================================================
   Hero Subtitle
   ======================================================================= */

.hero-subtitle {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: var(--weight-regular);
  color: var(--color-medium);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

/* =======================================================================
   Hero CTA
   ======================================================================= */

.hero__cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

@media (min-width: 480px) {
  .hero__cta {
    flex-direction: row;
    justify-content: center;
  }
}

/* =======================================================================
   Hero Decorative Elements
   ======================================================================= */

/* Floating decorative circles */
.hero__deco {
  position: absolute;
  border-radius: 50%;
  opacity: 0.12;
  pointer-events: none;
  animation: float 6s ease-in-out infinite;
}

.hero__deco--1 {
  width: 300px;
  height: 300px;
  background-color: var(--color-accent-pink);
  top: -60px;
  right: -80px;
  animation-duration: 7s;
}

.hero__deco--2 {
  width: 200px;
  height: 200px;
  background-color: var(--color-sage);
  bottom: 60px;
  left: -60px;
  animation-duration: 5s;
  animation-delay: -2s;
}

.hero__deco--3 {
  width: 120px;
  height: 120px;
  background-color: var(--color-accent-lavender);
  top: 30%;
  left: 10%;
  animation-duration: 8s;
  animation-delay: -4s;
}

/* =======================================================================
   Feature Grid Section
   ======================================================================= */

.feature-section {
  padding: var(--space-16) var(--gutter);
  text-align: center;
}

.feature-section__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-dark);
  margin-bottom: var(--space-2);
}

.feature-section__subtitle {
  font-size: var(--text-base);
  color: var(--color-muted);
  margin-bottom: var(--space-12);
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  max-width: var(--container-max);
  margin: 0 auto;
}

@media (min-width: 480px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* =======================================================================
   Feature Card
   ======================================================================= */

.feature-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  transition:
    box-shadow var(--transition-default),
    transform var(--transition-default);
}

.feature-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-6px) rotate(-1deg);
}

.feature-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 88px;
  height: 88px;
  margin: 0 auto var(--space-4);
  background: linear-gradient(135deg, var(--color-cream), var(--color-white));
  border-radius: var(--radius-lg);
  font-size: 28px;
  color: var(--color-terracotta);
  border: 1px solid var(--color-card-border);
}

/* Pastel gradient backgrounds per card */
.feature-card:nth-child(1) .feature-card__icon,
.feature-card:nth-child(1) .feature-icon {
  background: linear-gradient(135deg, rgba(255, 143, 163, 0.15), rgba(255, 143, 163, 0.05));
}

.feature-card:nth-child(2) .feature-card__icon,
.feature-card:nth-child(2) .feature-icon {
  background: linear-gradient(135deg, rgba(110, 196, 168, 0.15), rgba(110, 196, 168, 0.05));
}

.feature-card:nth-child(3) .feature-card__icon,
.feature-card:nth-child(3) .feature-icon {
  background: linear-gradient(135deg, rgba(184, 169, 232, 0.15), rgba(184, 169, 232, 0.05));
}

.feature-card:nth-child(4) .feature-card__icon,
.feature-card:nth-child(4) .feature-icon {
  background: linear-gradient(135deg, rgba(240, 184, 77, 0.15), rgba(240, 184, 77, 0.05));
}

.feature-card:nth-child(5) .feature-card__icon,
.feature-card:nth-child(5) .feature-icon {
  background: linear-gradient(135deg, rgba(232, 114, 92, 0.15), rgba(232, 114, 92, 0.05));
}

.feature-card:nth-child(6) .feature-card__icon,
.feature-card:nth-child(6) .feature-icon {
  background: linear-gradient(135deg, rgba(110, 196, 168, 0.15), rgba(184, 169, 232, 0.05));
}

.feature-card__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-dark);
  margin-bottom: var(--space-2);
}

.feature-card__desc {
  font-size: var(--text-sm);
  color: var(--color-muted);
  line-height: var(--leading-relaxed);
}

/* =======================================================================
   How It Works Section
   ======================================================================= */

.steps-section {
  padding: var(--space-16) var(--gutter);
  background-color: var(--color-cream);
}

.steps-section__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-dark);
  text-align: center;
  margin-bottom: var(--space-12);
}

.steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  max-width: var(--container-form);
  margin: 0 auto;
}

@media (min-width: 768px) {
  .steps {
    flex-direction: row;
    gap: var(--space-6);
    max-width: var(--container-max);
  }
}

.step {
  flex: 1;
  text-align: center;
  position: relative;
}

.step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: var(--color-terracotta);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  border-radius: 50%;
  margin-bottom: var(--space-4);
}

/* Step number color variants */
.step:nth-child(1) .step__number,
.step-card:nth-child(1) .step-number {
  background-color: var(--color-terracotta);
}

.step:nth-child(2) .step__number,
.step-card:nth-child(2) .step-number {
  background-color: var(--color-sage);
}

.step:nth-child(3) .step__number,
.step-card:nth-child(3) .step-number {
  background-color: var(--color-gold);
}

.step__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-dark);
  margin-bottom: var(--space-2);
}

.step__desc {
  font-size: var(--text-sm);
  color: var(--color-muted);
  line-height: var(--leading-relaxed);
}

/* Arrow between steps (desktop only) */
@media (min-width: 768px) {
  .step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 24px;
    right: calc(-1 * var(--space-3) - 8px);
    width: 16px;
    height: 16px;
    border-right: 2px solid var(--color-card-border);
    border-bottom: 2px solid var(--color-card-border);
    transform: rotate(-45deg);
  }
}

/* =======================================================================
   CTA Section (bottom of homepage)
   ======================================================================= */

.cta-section {
  padding: var(--space-16) var(--gutter);
  text-align: center;
  background: linear-gradient(
    180deg,
    var(--color-light-bg) 0%,
    var(--color-cream) 100%
  );
}

.cta-section__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-dark);
  margin-bottom: var(--space-4);
}

.cta-section__desc {
  font-size: var(--text-base);
  color: var(--color-muted);
  margin-bottom: var(--space-8);
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

/* =======================================================================
   Sections — Background & Spacing
   ======================================================================= */

.features-section {
  background-color: var(--color-light-bg);
}

.how-section {
  background-color: var(--color-cream);
}

.disclaimer-section {
  background-color: var(--color-light-bg);
}

.disclaimer-card {
  max-width: var(--container-form);
  margin: 0 auto;
  padding: var(--space-6);
  background-color: var(--color-white);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.disclaimer-text {
  font-size: var(--text-sm);
  color: var(--color-muted);
  line-height: var(--leading-relaxed);
  text-align: center;
}

/* =======================================================================
   Section Title & CTA
   ======================================================================= */

.section-title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-dark);
  text-align: center;
  margin-bottom: var(--space-12);
}


/* =======================================================================
   Feature Card Inner Elements (non-BEM classes used in HTML)
   ======================================================================= */

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 88px;
  height: 88px;
  margin: 0 auto var(--space-4);
  background: linear-gradient(135deg, var(--color-cream), var(--color-white));
  border-radius: var(--radius-lg);
  font-size: 28px;
  border: 1px solid var(--color-card-border);
}

.feature-title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-dark);
  margin-bottom: var(--space-2);
}

.feature-text {
  font-size: var(--text-sm);
  color: var(--color-muted);
  line-height: var(--leading-relaxed);
}

/* =======================================================================
   Steps Grid & Cards
   ======================================================================= */

.steps-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  max-width: var(--container-form);
  margin: 0 auto;
}

@media (min-width: 768px) {
  .steps-grid {
    flex-direction: row;
    gap: var(--space-6);
    max-width: var(--container-max);
  }
}

.step-card {
  flex: 1;
  text-align: center;
  position: relative;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: var(--color-terracotta);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  border-radius: 50%;
  margin-bottom: var(--space-4);
}

.step-title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-dark);
  margin-bottom: var(--space-2);
}

.step-text {
  font-size: var(--text-sm);
  color: var(--color-muted);
  line-height: var(--leading-relaxed);
}

/* Arrow between steps (desktop only) */
@media (min-width: 768px) {
  .step-card:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 24px;
    right: calc(-1 * var(--space-3) - 8px);
    width: 16px;
    height: 16px;
    border-right: 2px solid var(--color-card-border);
    border-bottom: 2px solid var(--color-card-border);
    transform: rotate(-45deg);
  }
}

/* =======================================================================
   Responsive — Mobile adjustments
   ======================================================================= */

@media (max-width: 479px) {
  .hero {
    min-height: 60vh;
    padding: var(--space-12) var(--gutter) var(--space-16);
  }

  .hero::after {
    height: 40px;
  }

  .hero__deco--1 {
    width: 160px;
    height: 160px;
    top: -40px;
    right: -40px;
  }

  .hero__deco--2 {
    width: 100px;
    height: 100px;
    bottom: 40px;
    left: -30px;
  }

  .hero__deco--3 {
    display: none;
  }
}