/* ==========================================================================
   女性向け同人DB - ベーススタイル（MVP）
   次セッションで詳細ページ用CSSを追加予定
   ========================================================================== */

:root {
  --color-bg: #0f1115;
  --color-bg-elevated: #191c24;
  --color-bg-card: #232733;
  --color-border: #2d3141;
  --color-text: #e8ebf0;
  --color-text-dim: #9aa2b3;
  --color-accent: #ff4d6d;
  --color-accent-dim: #b73650;
  --color-discount: #ffb830;
  --color-new: #4de388;
  --color-link: #7fb3ff;
  --radius: 8px;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans",
    "Yu Gothic UI", Meiryo, sans-serif;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
}

a {
  color: var(--color-link);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

/* ---------- Header ---------- */
.site-header {
  background: var(--color-bg-elevated);
  border-bottom: 1px solid var(--color-border);
  padding: 12px 20px;
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.site-title {
  font-size: 18px;
  font-weight: 700;
  margin: 0;
}
.site-title a {
  color: var(--color-text);
}
.site-nav {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 14px;
}
.site-nav a {
  padding: 4px 8px;
  border-radius: 4px;
}
.site-nav a:hover {
  background: var(--color-bg-card);
  text-decoration: none;
}
.site-nav a.active {
  background: var(--color-bg-card);
  color: var(--color-accent);
  font-weight: 600;
}

/* ---------- Container ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* ---------- Filter Bar ---------- */
.filter-bar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  background: var(--color-bg-elevated);
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 20px;
  border: 1px solid var(--color-border);
}
.filter-group {
  display: flex;
  gap: 6px;
  align-items: center;
}
.filter-label {
  font-size: 12px;
  color: var(--color-text-dim);
  margin-right: 4px;
}
.filter-btn {
  background: var(--color-bg-card);
  color: var(--color-text-dim);
  border: 1px solid var(--color-border);
  padding: 5px 12px;
  border-radius: 16px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
}
.filter-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-text);
}
.filter-btn.active {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

/* ---------- Tabs ---------- */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 20px;
  overflow-x: auto;
}
.tab {
  padding: 10px 16px;
  color: var(--color-text-dim);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  font-size: 14px;
  white-space: nowrap;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  font-family: inherit;
}
.tab.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
  font-weight: 600;
}
.tab:hover:not(.active) {
  color: var(--color-text);
}

/* ---------- Ranking List ---------- */
.ranking-list {
  display: grid;
  gap: 12px;
}
.rank-card {
  display: grid;
  grid-template-columns: 48px 100px 1fr auto;
  gap: 16px;
  background: var(--color-bg-card);
  padding: 12px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  align-items: center;
  transition: border-color 0.15s;
}
.rank-card:hover {
  border-color: var(--color-accent-dim);
}
.rank-card--no-rank {
  grid-template-columns: 100px 1fr auto;
}
.rank-number {
  font-size: 28px;
  font-weight: 700;
  text-align: center;
  color: var(--color-accent);
}
.rank-number.top3 {
  color: var(--color-discount);
}
.rank-thumb {
  width: 100px;
  height: 100px;
  background: var(--color-bg);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-dim);
  font-size: 11px;
  overflow: hidden;
}
.rank-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.rank-info {
  min-width: 0;
}
.rank-title {
  font-size: 15px;
  font-weight: 600;
  margin: 0 0 4px;
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.rank-circle {
  font-size: 12px;
  color: var(--color-text-dim);
  margin-bottom: 6px;
}
.rank-circle a {
  color: var(--color-text-dim);
}
.rank-badges {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.badge {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 3px;
  background: var(--color-bg);
  color: var(--color-text-dim);
}
.badge.platform-dlsite {
  background: #2b3e50;
  color: #8dd;
}
.badge.platform-fanza {
  background: #3d2b4a;
  color: #d8f;
}
.badge.r18 {
  background: #5a1f2a;
  color: #ffb0bd;
}
.badge.all_ages {
  background: #1f3a5a;
  color: #b0d4ff;
}
.badge.ai {
  background: #4a3a1f;
  color: #ffd88a;
}
.badge.new {
  background: var(--color-new);
  color: #0b1a10;
  font-weight: 700;
}
.badge.discount {
  background: var(--color-discount);
  color: #1a1000;
  font-weight: 700;
}
.rank-price {
  text-align: right;
  min-width: 110px;
}
.price-current {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
}
.price-original {
  font-size: 12px;
  color: var(--color-text-dim);
  text-decoration: line-through;
}
.price-discount {
  font-size: 12px;
  color: var(--color-discount);
  font-weight: 600;
}
.price-variant {
  display: flex;
  align-items: baseline;
  justify-content: flex-end;
  gap: 6px;
  font-size: 12px;
  line-height: 1.3;
}
.price-variant + .price-variant {
  margin-top: 2px;
}
.price-variant-label {
  font-size: 10px;
  color: var(--color-text-dim);
  min-width: 42px;
  text-align: left;
}
.price-variant-main {
  font-weight: 700;
  color: var(--color-text);
}
.price-variant-strike {
  color: var(--color-text-dim);
  text-decoration: line-through;
}
.price-variant-off {
  color: var(--color-discount);
  font-weight: 600;
}
.rank-stats {
  font-size: 11px;
  color: var(--color-text-dim);
  margin-top: 4px;
}

/* ---------- Doc Page (about/disclaimer/privacy/contact) ---------- */
.doc-page {
  max-width: 760px;
  margin: 0 auto;
}
.doc-page h2 {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 12px;
  margin-bottom: 24px;
}
.doc-page h3 {
  margin-top: 32px;
  color: var(--color-accent);
  font-size: 16px;
}
.doc-page section + section {
  margin-top: 8px;
}
.doc-page ul {
  padding-left: 24px;
}
.doc-page li {
  margin-bottom: 6px;
}
.doc-page code {
  background: var(--color-bg-card);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 13px;
}
.contact-box {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 12px 0;
}

/* ---------- Contact Form ---------- */
.contact-form { display: flex; flex-direction: column; gap: 16px; }
.contact-form .form-row { display: flex; flex-direction: column; gap: 6px; }
.contact-form label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
}
.contact-form .form-req {
  display: inline-block;
  background: #7a2a2a;
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 3px;
  margin-left: 6px;
  vertical-align: middle;
}
.contact-form .form-opt {
  font-size: 11px;
  color: var(--color-text-dim);
  font-weight: 400;
  margin-left: 6px;
}
.contact-form .form-hint {
  font-size: 11px;
  color: var(--color-text-dim);
  margin: 2px 0 0;
}
.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form select,
.contact-form textarea {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  border-radius: var(--radius);
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
  width: 100%;
  box-sizing: border-box;
  transition: border-color 0.15s;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}
.contact-form textarea { resize: vertical; min-height: 140px; }
.contact-form button[type="submit"] {
  align-self: flex-start;
  padding: 10px 28px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
.contact-form button[type="submit"]:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.form-status {
  padding: 12px 14px;
  border-radius: var(--radius);
  font-size: 13px;
  line-height: 1.6;
}
.form-status.success {
  background: rgba(60, 140, 60, 0.15);
  border: 1px solid rgba(60, 180, 60, 0.4);
  color: #9fdc9f;
}
.form-status.error {
  background: rgba(180, 60, 60, 0.15);
  border: 1px solid rgba(200, 80, 80, 0.4);
  color: #e89999;
}

/* ---------- Work Detail Page ---------- */
.work-detail {
  max-width: 960px;
  margin: 0 auto;
}
.work-hero {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 24px;
  margin-bottom: 24px;
  align-items: start;
}
.work-hero-left {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.work-hero-thumb {
  width: 420px;
  height: 420px;
  background: var(--color-bg-card);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-dim);
  overflow: hidden;
}
.work-hero-thumb a,
.work-hero-thumb img {
  width: 100%;
  height: 100%;
  display: block;
}
.work-hero-thumb img {
  object-fit: contain;
  background: #000;
}
.work-hero-thumb a {
  cursor: zoom-in;
}
.work-hero-info h2 {
  margin-top: 0;
}
.work-meta-row {
  margin: 8px 0;
  color: var(--color-text-dim);
  font-size: 14px;
}
.work-meta-row strong {
  color: var(--color-text);
  margin-right: 8px;
}
.work-price-block {
  background: var(--color-bg-card);
  padding: 16px;
  border-radius: var(--radius);
  margin: 16px 0;
  border: 1px solid var(--color-border);
}
.work-price-big {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-accent);
}
.work-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
}
.buy-btn {
  flex: 1;
  min-width: 200px;
  padding: 14px 20px;
  border-radius: var(--radius);
  font-weight: 700;
  text-align: center;
  color: #fff;
  font-size: 15px;
  transition: transform 0.15s;
}
.buy-btn:hover {
  transform: translateY(-1px);
  text-decoration: none;
}
.buy-btn.dlsite {
  background: #0a6cc5;
}
.buy-btn.fanza {
  background: #a8388c;
}
.section-block {
  background: var(--color-bg-elevated);
  padding: 16px 20px;
  border-radius: var(--radius);
  margin-top: 20px;
  border: 1px solid var(--color-border);
}
.section-block h3 {
  margin-top: 0;
  font-size: 15px;
  color: var(--color-accent);
}
.genre-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.genre-tag {
  background: var(--color-bg-card);
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 12px;
  color: var(--color-text-dim);
}
.creator-grid {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 8px 16px;
  font-size: 14px;
}
.creator-role {
  color: var(--color-text-dim);
}

/* ---------- Sample Image Strip ---------- */
.sample-strip {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 6px;
  cursor: grab;
  user-select: none;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}
.sample-strip.grabbing {
  cursor: grabbing;
  scroll-behavior: auto;
}
.sample-strip::-webkit-scrollbar {
  height: 6px;
}
.sample-strip::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}
.sample-thumb {
  flex: 0 0 auto;
  width: 80px;
  height: 80px;
  padding: 0;
  border: 2px solid transparent;
  background: var(--color-bg);
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.15s ease, opacity 0.15s ease;
  opacity: 0.7;
}
.sample-thumb.active {
  border-color: var(--color-accent);
  opacity: 1;
}
.sample-thumb:hover {
  opacity: 1;
}
.sample-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  pointer-events: none;
}

/* ---------- Circle Detail ---------- */
.circle-header {
  background: var(--color-bg-elevated);
  padding: 20px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  margin-bottom: 20px;
}
.circle-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
}
.circle-link {
  background: var(--color-bg-card);
  padding: 6px 12px;
  border-radius: 16px;
  font-size: 13px;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.circle-link:hover {
  border-color: var(--color-accent);
  text-decoration: none;
}
.circle-stats {
  display: flex;
  gap: 24px;
  color: var(--color-text-dim);
  font-size: 13px;
  margin-top: 8px;
}
.circle-stats strong {
  color: var(--color-text);
  font-size: 18px;
  margin-right: 4px;
}

@media (max-width: 640px) {
  .work-hero {
    grid-template-columns: 1fr;
  }
  .work-hero-thumb {
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1;
    max-width: 420px;
    margin: 0 auto;
  }
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 20px;
  text-align: center;
  color: var(--color-text-dim);
  font-size: 12px;
  margin-top: 40px;
}
.site-footer a {
  color: var(--color-text-dim);
  margin: 0 8px;
}

/* ---------- Age Verification Modal ---------- */
.age-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
}
.age-modal-overlay[hidden] {
  display: none;
}
.age-modal {
  background: var(--color-bg-elevated);
  padding: 32px;
  border-radius: var(--radius);
  max-width: 440px;
  width: 90%;
  text-align: center;
  border: 1px solid var(--color-border);
}
.age-modal h2 {
  margin-top: 0;
  color: var(--color-accent);
}
.age-modal-buttons {
  display: flex;
  gap: 12px;
  margin-top: 20px;
  justify-content: center;
}
.btn {
  padding: 10px 24px;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
}
.btn-secondary {
  background: var(--color-bg-card);
  color: var(--color-text-dim);
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .rank-card {
    grid-template-columns: 36px 72px 1fr;
    gap: 10px;
    padding: 10px;
  }
  .rank-card--no-rank {
    grid-template-columns: 72px 1fr;
  }
  .rank-thumb {
    width: 72px;
    height: 72px;
  }
  .rank-number {
    font-size: 22px;
  }
  .rank-price {
    grid-column: 1 / -1;
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 8px;
    border-top: 1px solid var(--color-border);
  }
  .rank-title {
    font-size: 14px;
  }
}