/* AI Works Store - Base Styles */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #ffffff;
  --color-bg-subtle: #f8f9fa;
  --color-bg-dark: #0f172a;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-text-light: #94a3b8;
  --color-border: #e2e8f0;
  --color-primary: #4f46e5;
  --color-primary-hover: #4338ca;
  --color-primary-light: #ede9fe;
  --color-secondary: #06b6d4;
  --color-accent: #f59e0b;
  --color-success: #10b981;
  --color-tag-bg: #f1f5f9;
  --color-tag-text: #475569;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04);
  --shadow-lg: 0 10px 30px rgba(0,0,0,.10), 0 4px 8px rgba(0,0,0,.05);
  --font-sans: 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'Yu Gothic', 'Meiryo', system-ui, sans-serif;
  --max-width: 1200px;
  --gutter: 1.5rem;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ========================
   Layout
======================== */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section {
  padding: 4rem 0;
}

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

/* ========================
   Header / Nav
======================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.site-logo {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -.02em;
  display: flex;
  align-items: center;
  gap: .4rem;
}

.site-logo span {
  color: var(--color-primary);
}

.site-logo:hover {
  text-decoration: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-nav a {
  font-size: .9rem;
  color: var(--color-text-muted);
  font-weight: 500;
  transition: color .15s;
}

.site-nav a:hover {
  color: var(--color-text);
  text-decoration: none;
}

.site-nav .btn {
  margin-left: .5rem;
}

/* ========================
   Buttons
======================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  padding: .6rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  border: none;
  transition: background .15s, transform .1s, box-shadow .15s;
  text-decoration: none !important;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
}

.btn--primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(79,70,229,.3);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary-light);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-muted);
}

.btn--ghost:hover {
  background: var(--color-bg-subtle);
  color: var(--color-text);
}

.btn--lg {
  padding: .875rem 2rem;
  font-size: 1rem;
  border-radius: var(--radius-md);
}

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

.hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #0f172a 100%);
  color: #fff;
  padding: 6rem 0 5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(99,102,241,.3) 0%, transparent 60%);
  pointer-events: none;
}

.hero__eyebrow {
  display: inline-block;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: #a5b4fc;
  background: rgba(99,102,241,.15);
  padding: .3rem .8rem;
  border-radius: 999px;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(165,180,252,.2);
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.2;
  margin-bottom: 1.25rem;
}

.hero__title em {
  font-style: normal;
  color: #a5b4fc;
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: #94a3b8;
  max-width: 560px;
  margin: 0 auto 2.5rem;
  line-height: 1.8;
}

.hero__cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ========================
   Section headings
======================== */

.section-header {
  margin-bottom: 2.5rem;
}

.section-header__label {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: .5rem;
}

.section-header__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--color-text);
  margin-bottom: .5rem;
}

.section-header__desc {
  color: var(--color-text-muted);
  font-size: .95rem;
}

/* ========================
   Feature cards (できること)
======================== */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: box-shadow .2s, transform .2s;
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.feature-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.feature-card__title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: .4rem;
}

.feature-card__desc {
  font-size: .875rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ========================
   Product Cards
======================== */

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.product-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow .2s, transform .2s;
  display: flex;
  flex-direction: column;
  cursor: pointer;
}

.product-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.product-card__thumb {
  width: 100%;
  height: 160px;
  background: linear-gradient(135deg, #ede9fe, #dbeafe);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--color-primary);
  position: relative;
}

.product-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-card__badge {
  position: absolute;
  top: .75rem;
  left: .75rem;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  padding: .25rem .6rem;
  border-radius: 999px;
  background: rgba(15,23,42,.7);
  color: #fff;
  backdrop-filter: blur(4px);
}

.product-card__status {
  position: absolute;
  top: .75rem;
  right: .75rem;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .05em;
  padding: .25rem .6rem;
  border-radius: 999px;
  background: rgba(245,158,11,.92);
  color: #fff;
  backdrop-filter: blur(4px);
}

.product-card__body {
  padding: 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card__category {
  font-size: .75rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: .35rem;
}

.product-card__name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: .4rem;
  line-height: 1.4;
}

.product-card__catch {
  font-size: .85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 1rem;
}

.product-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
  flex-wrap: wrap;
}

.product-card__price {
  font-size: .9rem;
  font-weight: 700;
  color: var(--color-text);
}

.product-card__price.free {
  color: var(--color-success);
}

.product-card__price.contact {
  color: var(--color-accent);
}

.product-card__cta {
  font-size: .8rem;
  padding: .4rem .9rem;
}

.product-card__cta.is-disabled,
.detail-cta-card .btn.is-disabled {
  pointer-events: none;
  cursor: not-allowed;
  opacity: .65;
  border-color: var(--color-border);
  background: var(--color-bg-subtle);
  color: var(--color-text-muted);
  box-shadow: none;
  transform: none;
}

.product-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
  margin-bottom: .75rem;
}

/* ========================
   Tags
======================== */

.tag {
  display: inline-block;
  font-size: .7rem;
  font-weight: 600;
  color: var(--color-tag-text);
  background: var(--color-tag-bg);
  padding: .2rem .55rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
}

.tag--active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ========================
   Category Cards
======================== */

.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.category-card {
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: border-color .15s, box-shadow .2s, transform .2s;
  text-decoration: none;
  display: block;
  color: var(--color-text);
}

.category-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
  transform: translateY(-2px);
  text-decoration: none;
}

.category-card__icon {
  font-size: 2.2rem;
  margin-bottom: .75rem;
}

.category-card__name {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: .35rem;
}

.category-card__desc {
  font-size: .8rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ========================
   Submit CTA
======================== */

.submit-cta {
  background: linear-gradient(135deg, #0f172a, #1e1b4b);
  color: #fff;
  border-radius: var(--radius-xl);
  padding: 3.5rem 2.5rem;
  text-align: center;
  margin: 0 var(--gutter);
}

.submit-cta__title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -.02em;
  margin-bottom: .75rem;
}

.submit-cta__desc {
  color: #94a3b8;
  max-width: 480px;
  margin: 0 auto 2rem;
  font-size: .95rem;
}

/* ========================
   Product List Page
======================== */

.filter-bar {
  display: flex;
  align-items: center;
  gap: .75rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.filter-bar__label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.filter-btn {
  padding: .4rem 1rem;
  border-radius: 999px;
  border: 1.5px solid var(--color-border);
  background: var(--color-bg);
  font-size: .8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all .15s;
  font-family: var(--font-sans);
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.search-box {
  display: flex;
  align-items: center;
  gap: .5rem;
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: .5rem 1rem;
  margin-bottom: 1.5rem;
}

.search-box input {
  border: none;
  background: transparent;
  font-family: var(--font-sans);
  font-size: .9rem;
  color: var(--color-text);
  outline: none;
  flex: 1;
  min-width: 0;
}

.search-box input::placeholder {
  color: var(--color-text-light);
}

.search-box__icon {
  color: var(--color-text-light);
  font-size: 1rem;
}

.results-count {
  font-size: .85rem;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}

/* ========================
   Product Detail Page
======================== */

.detail-header {
  padding: 3rem 0 2rem;
}

.detail-breadcrumb {
  font-size: .8rem;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}

.detail-breadcrumb a {
  color: var(--color-text-muted);
}

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

.detail-hero {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: start;
}

.detail-hero__content {
  min-width: 0;
}

.detail-hero__category {
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--color-primary);
  margin-bottom: .5rem;
}

.detail-hero__name {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.2;
  margin-bottom: .75rem;
}

.detail-hero__catch {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
  line-height: 1.7;
}

.detail-hero__meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: .85rem;
  color: var(--color-text-muted);
}

.detail-hero__meta strong {
  color: var(--color-text);
}

.detail-sidebar {
  width: 280px;
  flex-shrink: 0;
}

.detail-cta-card {
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  position: sticky;
  top: 80px;
}

.detail-cta-card__price {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 1rem;
}

.detail-cta-card__price.free {
  color: var(--color-success);
}

.detail-cta-card__price.contact {
  color: var(--color-accent);
}

.detail-cta-card .btn {
  width: 100%;
  margin-bottom: .75rem;
}

.detail-cta-card__note {
  font-size: .75rem;
  color: var(--color-text-muted);
  text-align: center;
  line-height: 1.6;
}

.detail-body {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 2.5rem;
  align-items: start;
}

.detail-main {
  min-width: 0;
}

.detail-section {
  margin-bottom: 2.5rem;
}

.detail-section__title {
  font-size: 1.1rem;
  font-weight: 700;
  border-bottom: 2px solid var(--color-border);
  padding-bottom: .5rem;
  margin-bottom: 1rem;
}

.detail-section ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.detail-section ul li {
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  font-size: .9rem;
  color: var(--color-text);
}

.detail-section ul li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: .05em;
}

.detail-section ol {
  list-style: none;
  counter-reset: step-counter;
  display: flex;
  flex-direction: column;
  gap: .75rem;
}

.detail-section ol li {
  counter-increment: step-counter;
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  font-size: .9rem;
}

.detail-section ol li::before {
  content: counter(step-counter);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  min-width: 24px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: .75rem;
  font-weight: 700;
  flex-shrink: 0;
}

.detail-meta-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .875rem;
}

.detail-meta-table th,
.detail-meta-table td {
  padding: .6rem .75rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.detail-meta-table th {
  color: var(--color-text-muted);
  font-weight: 600;
  width: 35%;
  white-space: nowrap;
}

.detail-prohibited {
  background: #fef2f2;
  border: 1px solid #fee2e2;
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
}

.detail-prohibited li::before {
  content: '!';
  background: #ef4444;
}

.detail-ai-disclosure {
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
}

/* ========================
   Page Hero (inner pages)
======================== */

.page-hero {
  background: var(--color-bg-dark);
  color: #fff;
  padding: 3.5rem 0 3rem;
}

.page-hero__title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -.02em;
  margin-bottom: .5rem;
}

.page-hero__desc {
  color: #94a3b8;
  font-size: .95rem;
}

/* ========================
   Footer
======================== */

.site-footer {
  background: var(--color-bg-dark);
  color: #94a3b8;
  padding: 3rem 0 2rem;
}

.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.site-footer__top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 2.5rem;
}

.site-footer__brand {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: .6rem;
}

.site-footer__tagline {
  font-size: .85rem;
  line-height: 1.7;
  max-width: 280px;
}

.site-footer__heading {
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: #fff;
  margin-bottom: .875rem;
}

.site-footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.site-footer__links a {
  font-size: .85rem;
  color: #94a3b8;
  transition: color .15s;
}

.site-footer__links a:hover {
  color: #fff;
  text-decoration: none;
}

.site-footer__bottom {
  border-top: 1px solid #1e293b;
  padding-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .5rem;
}

.site-footer__copy {
  font-size: .8rem;
}

.site-footer__disclaimer {
  font-size: .75rem;
  color: #475569;
}

/* ========================
   Draft banner
======================== */

.draft-banner {
  background: #fef3c7;
  border: 1px solid #fbbf24;
  color: #92400e;
  padding: .6rem 1.25rem;
  font-size: .8rem;
  font-weight: 600;
  text-align: center;
}

/* ========================
   Empty state
======================== */

.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--color-text-muted);
}

.empty-state__icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.empty-state__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: .5rem;
}

/* ========================
   Responsive
======================== */

@media (max-width: 768px) {
  :root {
    --gutter: 1rem;
  }

  .site-nav {
    gap: .75rem;
  }

  .site-nav a:not(.btn) {
    display: none;
  }

  .hero {
    padding: 4rem 0 3.5rem;
  }

  .section {
    padding: 3rem 0;
  }

  .detail-hero {
    grid-template-columns: 1fr;
  }

  .detail-sidebar {
    width: auto;
  }

  .detail-body {
    grid-template-columns: 1fr;
  }

  .site-footer__top {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .site-footer__bottom {
    flex-direction: column;
    text-align: center;
  }

  .submit-cta {
    margin: 0;
    border-radius: 0;
    padding: 2.5rem 1.25rem;
  }
}

@media (max-width: 480px) {
  .site-footer__top {
    grid-template-columns: 1fr;
  }

  .hero__cta {
    flex-direction: column;
    align-items: center;
  }
}