/* ============================================
   Property LP Template — Shared Styles
   上大崎LPデザイン踏襲版
   Noto Serif JP / Noto Sans JP
   クリーム背景 / 深緑アクセント / 明朝見出し
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@400;500;600&family=Noto+Sans+JP:wght@300;400;500&display=swap');

/* ── Design Tokens ── */
:root {
  /* Background: warm cream (matches kamioosaki bg-50) */
  --bg:          #f8f6f2;
  --bg-alt:      #f2efe9;
  --bg-dark:     #111010;

  /* Text */
  --text:        #1a1815;
  --text-mid:    #5a5650;
  --text-sub:    #8a8680;

  /* Accent: deep forest green (hue 148) */
  --accent:      #2d5a42;
  --accent-mid:  #3a6e52;
  --accent-light:#e8f0ec;

  /* Border */
  --border:      #dedad4;
  --border-dark: #c8c4bc;

  /* Fonts */
  --serif:  "Noto Serif JP", "游明朝", "Yu Mincho", Georgia, serif;
  --sans:   "Noto Sans JP", "游ゴシック", "Yu Gothic", sans-serif;

  /* Spacing */
  --sp-xs:  8px;
  --sp-sm:  16px;
  --sp-md:  32px;
  --sp-lg:  56px;
  --sp-xl:  88px;

  --max-w:  860px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }

/* ── Nav ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(248, 246, 242, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  padding: 0 var(--sp-sm);
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__logo {
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--text);
  flex-shrink: 0;
}
.nav__links {
  display: none;
  gap: 24px;
}
.nav__links a {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text-mid);
  font-family: var(--sans);
  white-space: nowrap;
}
.nav__links a:hover { color: var(--accent); }

/* ── Hamburger ── */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  flex-shrink: 0;
}
.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  transition: transform 0.25s, opacity 0.25s;
  transform-origin: center;
}
.nav__hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__hamburger.is-open span:nth-child(2) { opacity: 0; }
.nav__hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile dropdown */
.nav__links.is-open {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 56px;
  left: 0;
  right: 0;
  background: rgba(248, 246, 242, 0.98);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  padding: 16px var(--sp-sm) 20px;
  gap: 0;
  z-index: 99;
}
.nav__links.is-open a {
  padding: 13px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.nav__links.is-open a:last-child { border-bottom: none; }

.nav__cta {
  font-size: 10px;
  letter-spacing: 0.1em;
  background: var(--accent);
  color: #fff;
  padding: 6px 12px;
  white-space: nowrap;
  flex-shrink: 0;
  width: auto;
  max-width: none;
}
.nav__cta-mobile {
  display: block;
  margin-top: 8px;
  padding: 12px 0 !important;
  border-bottom: none !important;
  text-align: center;
  background: var(--accent);
  color: #fff !important;
  font-size: 13px;
  letter-spacing: 0.12em;
  border-radius: 2px;
}

/* ── Container ── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--sp-sm);
}

/* ── Section ── */
.section { padding: var(--sp-lg) 0; }
.section--alt { background: var(--bg-alt); }
.section--dark { background: var(--bg-dark); color: #fff; }
.section--cream { background: #faf8f4; }

/* ── Section Label ── */
.s-label {
  display: block;
  font-family: Georgia, serif;
  font-size: 10px;
  letter-spacing: 0.35em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.s-divider {
  width: 28px;
  height: 1px;
  background: var(--accent);
  margin-bottom: 24px;
}
.s-title {
  font-family: var(--serif);
  font-size: clamp(20px, 4.5vw, 28px);
  font-weight: 400;
  line-height: 1.55;
  letter-spacing: 0.07em;
  margin-bottom: 24px;
}
.s-text {
  font-size: 14px;
  line-height: 2;
  letter-spacing: 0.04em;
  color: var(--text-mid);
}

/* ── Hero ── */
.hero {
  position: relative;
  height: 100svh;
  min-height: 600px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: #111;
  padding-top: 56px;
}
.hero__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center center;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(10,10,8,0.82) 0%,
    rgba(10,10,8,0.35) 45%,
    rgba(10,10,8,0.08) 100%
  );
}
.hero__body {
  position: relative;
  z-index: 1;
  width: 100%;
  padding: 0 var(--sp-sm) calc(var(--sp-lg) + env(safe-area-inset-bottom, 0px));
  color: #fff;
}
.hero__en {
  font-family: Georgia, serif;
  font-size: 10px;
  letter-spacing: 0.32em;
  opacity: 0.65;
  margin-bottom: 12px;
  text-transform: uppercase;
}
.hero__title {
  font-family: var(--serif);
  font-size: clamp(24px, 5.5vw, 42px);
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: 0.09em;
  margin-bottom: 16px;
}
.hero__sub {
  font-size: clamp(12px, 3vw, 14px);
  letter-spacing: 0.07em;
  opacity: 0.8;
  line-height: 1.85;
  margin-bottom: 24px;
}
.hero__price-block {
  display: inline-block;
  border-top: 1px solid rgba(255,255,255,0.25);
  padding-top: 16px;
}
.hero__price {
  font-family: var(--serif);
  font-size: clamp(18px, 4vw, 24px);
  letter-spacing: 0.06em;
}
.hero__price-note {
  font-size: 11px;
  opacity: 0.55;
  letter-spacing: 0.12em;
  margin-top: 4px;
}

/* ── Key Points (3 cards below hero) ── */
.keypoints {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--border);
}
.keypoint {
  padding: 24px var(--sp-sm);
  border-bottom: 1px solid var(--border);
}
.keypoint__num {
  font-family: Georgia, serif;
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.2em;
  margin-bottom: 8px;
}
.keypoint__title {
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: 0.07em;
  margin-bottom: 6px;
}
.keypoint__text {
  font-size: 12px;
  color: var(--text-sub);
  line-height: 1.7;
  letter-spacing: 0.04em;
}

/* ── Spec Grid (主要スペックカード) ── */
.spec-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin: var(--sp-md) 0;
}
.spec-card {
  background: var(--bg);
  padding: 20px 16px;
  text-align: center;
}
.spec-card__label {
  display: block;
  font-family: Georgia, serif;
  font-size: 9px;
  letter-spacing: 0.22em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.spec-card__val {
  font-family: var(--serif);
  font-size: clamp(13px, 3vw, 15px);
  letter-spacing: 0.05em;
  line-height: 1.45;
}

/* ── Badge / Tag ── */
.badge {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 10px;
  letter-spacing: 0.18em;
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 10px;
}

/* ── Photo Cards ── */
.photo-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: var(--sp-md);
}
.photo-card__img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  background: #ccc;
}
.photo-card__title {
  font-family: var(--serif);
  font-size: 17px;
  letter-spacing: 0.07em;
  margin: 12px 0 6px;
}
.photo-card__text {
  font-size: 12px;
  color: var(--text-sub);
  line-height: 1.75;
  letter-spacing: 0.04em;
}

/* ── Feature List ── */
.feat-list {
  list-style: none;
  margin-top: var(--sp-sm);
}
.feat-list li {
  padding: 13px 0 13px 18px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  letter-spacing: 0.04em;
  position: relative;
  line-height: 1.65;
}
.feat-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 22px;
  width: 7px; height: 1px;
  background: var(--accent);
}

/* ── Property Table ── */
.prop-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  margin-top: var(--sp-sm);
}
.prop-table th,
.prop-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}
.prop-table th {
  width: 38%;
  font-family: var(--sans);
  font-weight: 300;
  color: var(--text-sub);
  letter-spacing: 0.06em;
  white-space: nowrap;
  font-size: 11px;
}
.prop-table td {
  letter-spacing: 0.04em;
  line-height: 1.6;
}
.prop-table tr:last-child th,
.prop-table tr:last-child td { border-bottom: none; }

/* ── Video ── */

/* ヒーロー背景動画（写真の代わりに動画を使う場合） */
.hero__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  /* 動画の上にoverlay(.hero__overlay)を必ず重ねること */
}

/* セクション内埋め込み動画（YouTube / ローカル動画） */
.video-section {
  padding: var(--sp-lg) 0;
}
.video-section--dark {
  background: #0d0d0b;
  color: #fff;
}

/* YouTube / Vimeo レスポンシブラッパー */
.video-embed {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 */
  background: #111;
  overflow: hidden;
  margin-top: var(--sp-md);
}
.video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* ローカル動画 (mp4等) */
.video-local {
  width: 100%;
  display: block;
  margin-top: var(--sp-md);
  background: #111;
  /* max-height: 480px; 必要に応じて制限 */
}

/* 動画キャプション */
.video-caption {
  font-size: 11px;
  color: var(--text-sub);
  letter-spacing: 0.06em;
  margin-top: 10px;
  line-height: 1.7;
}

/* 複数動画グリッド（2枚横並び） */
.video-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-md);
  margin-top: var(--sp-md);
}
@media (min-width: 640px) {
  .video-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ── FAQ ── */
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}
.faq-q {
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
  padding-left: 24px;
  position: relative;
}
.faq-q::before {
  content: 'Q';
  position: absolute;
  left: 0;
  font-family: Georgia, serif;
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0;
}
.faq-a {
  font-size: 13px;
  color: var(--text-mid);
  line-height: 1.85;
  padding-left: 24px;
  letter-spacing: 0.04em;
}

/* ── CTA Section ── */
.cta-section {
  padding: var(--sp-xl) 0;
  text-align: center;
  background: var(--bg-dark);
  color: #fff;
}
.cta-title {
  font-family: var(--serif);
  font-size: clamp(18px, 4vw, 26px);
  font-weight: 400;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}
.cta-sub {
  font-size: 13px;
  letter-spacing: 0.07em;
  opacity: 0.65;
  line-height: 1.8;
  margin-bottom: 36px;
}
.cta-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 320px;
  padding: 16px 24px;
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: 0.18em;
  cursor: pointer;
  border: none;
  transition: all 0.22s;
}
.btn--solid {
  background: var(--accent);
  color: #fff;
}
.btn--solid:hover { background: var(--accent-mid); }
.btn--ghost {
  background: transparent;
  color: rgba(255,255,255,0.82);
  border: 1px solid rgba(255,255,255,0.35);
}
.btn--ghost:hover { border-color: rgba(255,255,255,0.7); color: #fff; }

/* ── Contact Form ── */
.contact-form {
  margin-top: var(--sp-md);
}
.form-row {
  margin-bottom: 20px;
}
.form-label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-mid);
  margin-bottom: 6px;
}
.form-label .req {
  color: var(--accent);
  margin-left: 4px;
  font-size: 10px;
}
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  letter-spacing: 0.04em;
  padding: 12px 14px;
  appearance: none;
  -webkit-appearance: none;
  border-radius: 0;
  transition: border-color 0.2s;
  line-height: 1.5;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238a8680' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
  cursor: pointer;
}
.form-textarea {
  resize: vertical;
  min-height: 100px;
}
.form-checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 4px;
}
.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--text-mid);
  line-height: 1.5;
}
.form-checkbox input[type="checkbox"] {
  width: 16px;
  height: 16px;
  margin-top: 2px;
  flex-shrink: 0;
  accent-color: var(--accent);
  cursor: pointer;
}
.form-note {
  font-size: 11px;
  color: var(--text-sub);
  letter-spacing: 0.04em;
  line-height: 1.8;
  margin-top: var(--sp-sm);
}
.btn-submit {
  width: 100%;
  max-width: 100%;
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 18px;
  font-family: var(--sans);
  font-size: 14px;
  letter-spacing: 0.2em;
  cursor: pointer;
  margin-top: var(--sp-sm);
  transition: background 0.2s;
}
.btn-submit:hover { background: var(--accent-mid); }

/* ── Feature Cards (活用・リノベ等) ── */
.feat-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-top: var(--sp-md);
}
.feat-card {
  background: var(--bg);
  padding: 24px 20px;
}
.feat-card__tag {
  display: inline-block;
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 3px 10px;
  margin-bottom: 10px;
}
.feat-card__title {
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: 0.07em;
  margin-bottom: 8px;
}
.feat-card__text {
  font-size: 13px;
  color: var(--text-mid);
  line-height: 1.85;
  letter-spacing: 0.04em;
}
@media (min-width: 640px) {
  .feat-cards { grid-template-columns: repeat(3, 1fr); }
}

/* ── Company ── */
.company-wrap {
  padding: var(--sp-lg) 0 var(--sp-md);
  border-top: 1px solid var(--border);
}
.company-name {
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}
.company-info {
  font-size: 11px;
  color: var(--text-sub);
  line-height: 2;
  letter-spacing: 0.05em;
}

/* ── Floor Plan (間取り) ── */
.floorplan-section {
  margin-top: var(--sp-lg);
}
.floorplan-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-md);
  margin-top: var(--sp-md);
}
.floorplan-item {
  border: 1px solid var(--border);
  background: #fff;
  padding: var(--sp-sm);
}
.floorplan-item img {
  width: 100%;
  height: auto;
  display: block;
}
.floorplan-item__label {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-mid);
  margin-top: 10px;
  text-align: center;
}
.floorplan-item__detail {
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 0.07em;
  text-align: center;
  margin-top: 4px;
}
@media (min-width: 640px) {
  .floorplan-grid { grid-template-columns: repeat(2, 1fr); }
  .floorplan-grid--single { grid-template-columns: 1fr; max-width: 540px; margin-left: auto; margin-right: auto; }
}

/* ── Legal ── */
.legal {
  font-size: 10px;
  color: var(--text-sub);
  line-height: 1.9;
  letter-spacing: 0.04em;
  margin-top: var(--sp-md);
  padding-top: var(--sp-md);
  border-top: 1px solid var(--border);
}

/* ── Footer ── */
footer {
  background: #0c0c0a;
  color: rgba(255,255,255,0.38);
  padding: 24px var(--sp-sm);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-align: center;
  line-height: 2;
}

/* ── Responsive ── */
@media (min-width: 900px) {
  .nav__hamburger { display: none; }
  .nav__cta { font-size: 11px; letter-spacing: 0.15em; padding: 8px 16px; }
  .nav__cta-mobile { display: none !important; }
  .nav__links { display: flex; }
  .nav__links.is-open { position: static; flex-direction: row; padding: 0; border-bottom: none; background: none; backdrop-filter: none; }
  .keypoints { grid-template-columns: repeat(3, 1fr); }
  .keypoint { border-bottom: none; border-right: 1px solid var(--border); }
  .keypoint:last-child { border-right: none; }
  .spec-grid { grid-template-columns: repeat(4, 1fr); }
  .photo-cards { grid-template-columns: repeat(3, 1fr); }
  .cta-buttons { flex-direction: row; flex-wrap: wrap; justify-content: center; }
  .btn { width: auto; min-width: 240px; }
}

@media (min-width: 860px) {
  .container { padding: 0 var(--sp-md); }
  .section { padding: var(--sp-xl) 0; }
  .hero__title { font-size: 40px; }
}