/* ===================================
   Double One Studio — Home Page CSS
   Design: 海外レーベル型 (dark, minimal)
   =================================== */

:root {
  --d1s-black: #0a0a0a;
  --d1s-dark: #141414;
  --d1s-gray: #888;
  --d1s-light: #e0e0e0;
  --d1s-white: #fff;
  --d1s-accent: #ff3b3b;
  --d1s-font: 'Inter', 'Noto Sans JP', -apple-system, sans-serif;
  --d1s-max-width: 1200px;
}

/* Base */
.d1s-home {
  background: var(--d1s-black);
  color: var(--d1s-light);
  font-family: var(--d1s-font);
}

.d1s-home *, .d1s-home *::before, .d1s-home *::after {
  box-sizing: border-box;
}

/* HERO */
.d1s-hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  background: var(--d1s-black);
}

.d1s-hero__inner {
  max-width: var(--d1s-max-width);
  width: 100%;
  display: flex;
  align-items: center;
  gap: 4rem;
}

.d1s-hero__cover {
  flex: 0 0 400px;
}

.d1s-hero__cover img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  display: block;
}

.d1s-hero__placeholder {
  width: 400px;
  height: 400px;
  background: var(--d1s-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--d1s-gray);
  letter-spacing: 0.2em;
}

.d1s-hero__info {
  flex: 1;
}

.d1s-hero__label {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--d1s-accent);
  margin-bottom: 1rem;
  font-weight: 600;
}

.d1s-hero__title {
  font-size: 3rem;
  font-weight: 700;
  color: var(--d1s-white);
  margin: 0 0 0.5rem;
  line-height: 1.1;
}

.d1s-hero__artist {
  font-size: 1.25rem;
  color: var(--d1s-gray);
  margin: 0 0 2rem;
}

.d1s-hero__buttons {
  display: flex;
  gap: 1rem;
}

/* Buttons */
.d1s-btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: var(--d1s-font);
}

.d1s-btn--listen {
  background: var(--d1s-white);
  color: var(--d1s-black);
}

.d1s-btn--listen:hover {
  background: var(--d1s-accent);
  color: var(--d1s-white);
}

.d1s-btn--buy {
  background: transparent;
  color: var(--d1s-white);
  border: 1px solid var(--d1s-white);
}

.d1s-btn--buy:hover {
  background: var(--d1s-white);
  color: var(--d1s-black);
}

.d1s-btn--outline {
  background: transparent;
  color: var(--d1s-light);
  border: 1px solid var(--d1s-gray);
}

.d1s-btn--outline:hover {
  border-color: var(--d1s-white);
  color: var(--d1s-white);
}

/* Sections */
.d1s-section {
  max-width: var(--d1s-max-width);
  margin: 0 auto;
  padding: 5rem 2rem;
  border-top: 1px solid #222;
}

.d1s-section__title {
  font-size: 0.875rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--d1s-gray);
  margin: 0 0 3rem;
  font-weight: 400;
}

.d1s-section__more {
  text-align: center;
  margin-top: 3rem;
}

/* Grid */
.d1s-grid {
  display: grid;
  gap: 2rem;
}

.d1s-grid--4 { grid-template-columns: repeat(4, 1fr); }
.d1s-grid--3 { grid-template-columns: repeat(3, 1fr); }

/* Release Card */
.d1s-release-card {
  text-decoration: none;
  color: var(--d1s-light);
  transition: opacity 0.2s;
}

.d1s-release-card:hover { opacity: 0.8; }

.d1s-release-card__cover img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  display: block;
}

.d1s-release-card__placeholder {
  width: 100%;
  aspect-ratio: 1;
  background: var(--d1s-dark);
}

.d1s-release-card__info {
  padding-top: 0.75rem;
}

.d1s-release-card__artist {
  display: block;
  font-size: 0.75rem;
  color: var(--d1s-gray);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.d1s-release-card__title {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--d1s-white);
  margin-top: 0.25rem;
}

/* Featured Artist */
.d1s-featured-artist__card {
  display: flex;
  align-items: center;
  gap: 3rem;
}

.d1s-featured-artist__photo {
  flex: 0 0 300px;
}

.d1s-featured-artist__photo img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 50%;
}

.d1s-featured-artist__placeholder {
  width: 300px;
  height: 300px;
  background: var(--d1s-dark);
  border-radius: 50%;
}

.d1s-featured-artist__info h3 {
  font-size: 2rem;
  color: var(--d1s-white);
  margin: 0 0 0.5rem;
}

.d1s-featured-artist__location {
  font-size: 0.875rem;
  color: var(--d1s-gray);
  margin: 0 0 1rem;
}

.d1s-featured-artist__bio {
  color: var(--d1s-light);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

/* Listen */
.d1s-listen__player {
  max-width: 800px;
}

/* Podcast */
.d1s-podcast__episode {
  padding: 1.5rem 0;
  border-bottom: 1px solid #222;
}

.d1s-podcast__episode h3 {
  margin: 0 0 0.5rem;
}

.d1s-podcast__episode h3 a {
  color: var(--d1s-white);
  text-decoration: none;
}

.d1s-podcast__episode h3 a:hover { color: var(--d1s-accent); }

.d1s-podcast__episode p {
  color: var(--d1s-gray);
  font-size: 0.875rem;
  margin: 0;
}

/* Product Card */
.d1s-product-card {
  text-decoration: none;
  color: var(--d1s-light);
  transition: opacity 0.2s;
}

.d1s-product-card:hover { opacity: 0.8; }

.d1s-product-card__image img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  display: block;
}

.d1s-product-card__placeholder {
  width: 100%;
  aspect-ratio: 1;
  background: var(--d1s-dark);
}

.d1s-product-card__info {
  padding-top: 0.75rem;
}

.d1s-product-card__name {
  display: block;
  font-weight: 600;
  color: var(--d1s-white);
}

.d1s-product-card__price {
  display: block;
  font-size: 0.875rem;
  color: var(--d1s-gray);
  margin-top: 0.25rem;
}

/* Newsletter */
.d1s-newsletter {
  text-align: center;
}

.d1s-newsletter p {
  color: var(--d1s-gray);
  margin-bottom: 2rem;
}

.d1s-newsletter__form {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  max-width: 500px;
  margin: 0 auto;
}

.d1s-newsletter__form input[type="email"] {
  flex: 1;
  padding: 0.75rem 1rem;
  background: var(--d1s-dark);
  border: 1px solid #333;
  color: var(--d1s-white);
  font-family: var(--d1s-font);
  font-size: 0.875rem;
}

.d1s-newsletter__form input[type="email"]:focus {
  outline: none;
  border-color: var(--d1s-white);
}

/* Empty state */
.d1s-empty {
  color: var(--d1s-gray);
  font-style: italic;
}

/* Responsive */
@media (max-width: 768px) {
  .d1s-hero { min-height: 60vh; padding: 2rem 1rem; }
  .d1s-hero__inner { flex-direction: column; gap: 2rem; text-align: center; }
  .d1s-hero__cover { flex: none; width: 100%; max-width: 300px; }
  .d1s-hero__placeholder { width: 300px; height: 300px; }
  .d1s-hero__title { font-size: 2rem; }
  .d1s-hero__buttons { justify-content: center; }
  .d1s-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .d1s-grid--3 { grid-template-columns: repeat(2, 1fr); }
  .d1s-featured-artist__card { flex-direction: column; text-align: center; }
  .d1s-featured-artist__photo { flex: none; width: 200px; margin: 0 auto; }
  .d1s-section { padding: 3rem 1rem; }
  .d1s-newsletter__form { flex-direction: column; }
}