/* ===================================
   買取庵 コーポレートサイト CSS
   =================================== */

/* --- リセット & 基本設定 --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-primary: #2c4a3e;
  --color-primary-dark: #1a3028;
  --color-accent: #8b7355;
  --color-accent-light: #a8926e;
  --color-gold: #c4a265;
  --color-bg: #faf8f5;
  --color-bg-alt: #f5f0e8;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-white: #ffffff;
  --color-border: #e0d8cc;
  --font-sans: "Noto Sans JP", sans-serif;
  --font-serif: "Noto Serif JP", serif;
  --header-height: 80px;
  --transition: 0.3s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

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

.section {
  padding: 100px 0;
}

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

/* --- セクションヘッダー --- */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-en {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: var(--color-accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  position: relative;
  display: inline-block;
  padding-bottom: 16px;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 2px;
  background-color: var(--color-accent);
}

.section-desc {
  margin-top: 16px;
  color: var(--color-text-light);
  font-size: 1rem;
}

/* --- ボタン --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 500;
  transition: all var(--transition);
  border: 2px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

.btn-secondary:hover {
  background-color: var(--color-white);
  color: var(--color-primary);
}

.btn-white {
  background-color: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}

.btn-white:hover {
  background-color: transparent;
  color: var(--color-white);
}

.btn-large {
  padding: 18px 40px;
  font-size: 1.1rem;
}

/* ===================================
   ヘッダー
   =================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(8px);
  z-index: 1000;
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}

.header.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo a {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.logo-main {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  letter-spacing: 0.15em;
  line-height: 1.2;
}

.logo-sub {
  font-size: 0.6rem;
  color: var(--color-accent);
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.nav-list {
  display: flex;
  gap: 32px;
}

.nav-list a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding: 4px 0;
}

.nav-list a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition);
}

.nav-list a:hover::after {
  width: 100%;
}

.header-contact {
  display: flex;
  align-items: center;
}

.header-phone {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.btn-small {
  padding: 10px 24px;
  font-size: 0.85rem;
}

/* ハンバーガーメニュー */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-primary-dark);
  transition: all var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* モバイルメニュー */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 100%;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  z-index: 999;
  padding: 24px 20px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.mobile-menu.active {
  display: block;
}

.mobile-menu ul {
  margin-bottom: 20px;
}

.mobile-menu li {
  border-bottom: 1px solid var(--color-border);
}

.mobile-menu li a {
  display: block;
  padding: 14px 0;
  font-size: 1rem;
  font-weight: 500;
}

.mobile-contact {
  text-align: center;
  padding-top: 16px;
}

.mobile-contact .btn {
  width: 100%;
}

/* ===================================
   ヒーロー
   =================================== */
.hero {
  position: relative;
  height: 85vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: var(--header-height);
  background: linear-gradient(135deg, #2c4a3e 0%, #1a3028 40%, #3d5c4f 100%);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(196, 162, 101, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 30%, rgba(139, 115, 85, 0.1) 0%, transparent 50%);
}

/* 和柄パターン（麻の葉風） */
.hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0.04;
  background-image:
    linear-gradient(30deg, #fff 12%, transparent 12.5%, transparent 87%, #fff 87.5%, #fff),
    linear-gradient(150deg, #fff 12%, transparent 12.5%, transparent 87%, #fff 87.5%, #fff),
    linear-gradient(30deg, #fff 12%, transparent 12.5%, transparent 87%, #fff 87.5%, #fff),
    linear-gradient(150deg, #fff 12%, transparent 12.5%, transparent 87%, #fff 87.5%, #fff),
    linear-gradient(60deg, rgba(255,255,255,.5) 25%, transparent 25.5%, transparent 75%, rgba(255,255,255,.5) 75%, rgba(255,255,255,.5)),
    linear-gradient(60deg, rgba(255,255,255,.5) 25%, transparent 25.5%, transparent 75%, rgba(255,255,255,.5) 75%, rgba(255,255,255,.5));
  background-size: 40px 70px;
  background-position: 0 0, 0 0, 20px 35px, 20px 35px, 0 0, 20px 35px;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--color-white);
  padding: 0 20px;
}

.hero-catch {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  margin-bottom: 24px;
  opacity: 0.9;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 3.2rem;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.1em;
  margin-bottom: 32px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.hero-badges {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.badge {
  display: inline-block;
  padding: 8px 24px;
  border: 1px solid rgba(196, 162, 101, 0.6);
  border-radius: 30px;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  color: var(--color-gold);
  background-color: rgba(196, 162, 101, 0.1);
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===================================
   お知らせバー
   =================================== */
.news-bar {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: 20px 0;
}

.news-inner {
  display: flex;
  align-items: flex-start;
  gap: 24px;
}

.news-label {
  display: inline-block;
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: 4px 16px;
  font-size: 0.8rem;
  font-weight: 500;
  border-radius: 3px;
  white-space: nowrap;
  margin-top: 2px;
}

.news-list {
  flex: 1;
}

.news-list li {
  display: flex;
  gap: 16px;
  padding: 4px 0;
  font-size: 0.9rem;
}

.news-list time {
  color: var(--color-text-light);
  white-space: nowrap;
  font-size: 0.85rem;
}

.news-list a:hover {
  color: var(--color-accent);
}

/* ===================================
   買取庵について
   =================================== */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image-placeholder {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.about-image-placeholder svg {
  display: block;
  width: 100%;
  height: auto;
}

.about-text h3 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  line-height: 2;
  color: var(--color-primary-dark);
  margin-bottom: 24px;
}

.about-text p {
  margin-bottom: 16px;
  color: var(--color-text-light);
  line-height: 2;
}

/* ===================================
   買取品目
   =================================== */
.items-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.item-card {
  background-color: var(--color-white);
  border-radius: 8px;
  padding: 32px 20px;
  text-align: center;
  transition: all var(--transition);
  border: 1px solid transparent;
}

.item-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.item-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
}

.item-icon svg {
  width: 100%;
  height: 100%;
}

.item-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.item-card p {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

.items-note {
  text-align: center;
  margin-top: 32px;
  color: var(--color-text-light);
  font-size: 0.9rem;
}

/* ===================================
   選ばれる理由
   =================================== */
.strength-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.strength-card {
  background-color: var(--color-white);
  border-radius: 8px;
  padding: 40px 32px;
  position: relative;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.strength-card:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

.strength-number {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-bg-alt);
  position: absolute;
  top: 12px;
  right: 20px;
  line-height: 1;
}

.strength-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

.strength-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* ===================================
   買取の流れ
   =================================== */
.flow-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 48px;
}

.flow-tab {
  padding: 12px 32px;
  border: 2px solid var(--color-accent);
  background-color: transparent;
  color: var(--color-accent);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  border-radius: 4px;
  transition: all var(--transition);
  font-family: var(--font-sans);
}

.flow-tab.active,
.flow-tab:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.flow-content {
  display: none;
}

.flow-content.active {
  display: block;
}

.flow-steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 16px;
}

.flow-step {
  flex: 1;
  max-width: 280px;
  text-align: center;
}

.step-number {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.15em;
  margin-bottom: 16px;
}

.step-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 16px;
}

.step-icon svg {
  width: 100%;
  height: 100%;
}

.flow-step h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.flow-step p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.flow-arrow {
  width: 40px;
  flex-shrink: 0;
  padding-top: 60px;
}

.flow-arrow svg {
  width: 100%;
  height: auto;
}

/* ===================================
   CTA
   =================================== */
.cta-section {
  background: linear-gradient(135deg, #2c4a3e 0%, #1a3028 100%);
  padding: 80px 0;
}

.cta-inner {
  text-align: center;
  color: var(--color-white);
}

.cta-inner h2 {
  font-family: var(--font-serif);
  font-size: 2rem;
  margin-bottom: 16px;
  letter-spacing: 0.1em;
}

.cta-inner > p {
  margin-bottom: 32px;
  opacity: 0.9;
  font-size: 1rem;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.cta-hours {
  font-size: 0.85rem;
  opacity: 0.7;
}

.btn-icon {
  display: flex;
  align-items: center;
}

/* ===================================
   会社概要
   =================================== */
.company-table {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  border-collapse: collapse;
}

.company-table tr {
  border-bottom: 1px solid var(--color-border);
}

.company-table th,
.company-table td {
  padding: 20px 24px;
  text-align: left;
  font-size: 0.95rem;
  vertical-align: top;
}

.company-table th {
  width: 180px;
  font-weight: 700;
  color: var(--color-primary-dark);
  background-color: var(--color-bg-alt);
  white-space: nowrap;
}

.company-table td a {
  color: var(--color-accent);
}

.company-table td a:hover {
  text-decoration: underline;
}

/* ===================================
   お問い合わせフォーム
   =================================== */
.contact-wrapper {
  max-width: 760px;
  margin: 0 auto;
}

.contact-form {
  background-color: var(--color-white);
  padding: 48px;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 0;
}

.form-group:not(.form-row .form-group) {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--color-primary-dark);
}

.required {
  font-size: 0.7rem;
  color: var(--color-white);
  background-color: #c44;
  padding: 2px 8px;
  border-radius: 3px;
  margin-left: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-group textarea {
  resize: vertical;
}

.form-submit {
  text-align: center;
  margin-top: 16px;
}

/* ===================================
   フッター
   =================================== */
.footer {
  background-color: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 64px 0 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 60px;
  padding-bottom: 48px;
}

.footer-logo .logo-main {
  color: var(--color-white);
  font-size: 2rem;
}

.footer-logo .logo-sub {
  color: rgba(255, 255, 255, 0.5);
}

.footer-desc {
  margin-top: 12px;
  font-size: 0.85rem;
  opacity: 0.7;
}

.footer-nav {
  display: grid;
  grid-template-columns: 1fr 1fr 2fr;
  gap: 32px;
}

.footer-nav-col-wide .footer-media-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 24px;
}

.footer-nav h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.footer-nav li {
  margin-bottom: 8px;
  font-size: 0.85rem;
}

.footer-nav a:hover {
  color: var(--color-gold);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 0.8rem;
  opacity: 0.6;
}

/* ===================================
   トップに戻るボタン
   =================================== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  z-index: 100;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: var(--color-accent);
  transform: translateY(-2px);
}

/* ===================================
   レスポンシブ
   =================================== */
@media (max-width: 1024px) {
  .nav {
    display: none;
  }

  .header-contact {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .hero-title {
    font-size: 2.4rem;
  }

  .strength-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .about-content {
    gap: 40px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .section {
    padding: 64px 0;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .hero {
    height: 75vh;
    min-height: 500px;
  }

  .hero-catch {
    font-size: 0.9rem;
  }

  .hero-title {
    font-size: 1.8rem;
  }

  .hero-badges {
    gap: 8px;
  }

  .badge {
    padding: 6px 16px;
    font-size: 0.8rem;
  }

  .news-inner {
    flex-direction: column;
    gap: 12px;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .about-text h3 {
    font-size: 1.3rem;
  }

  .items-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .item-card {
    padding: 24px 16px;
  }

  .strength-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .strength-card {
    padding: 32px 24px;
  }

  .flow-tabs {
    flex-wrap: wrap;
  }

  .flow-tab {
    padding: 10px 20px;
    font-size: 0.9rem;
  }

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

  .flow-arrow {
    transform: rotate(90deg);
    padding-top: 0;
    width: 30px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .form-group:not(.form-row .form-group) {
    margin-bottom: 20px;
  }

  .form-row .form-group {
    margin-bottom: 20px;
  }

  .contact-form {
    padding: 32px 24px;
  }

  .company-table th {
    width: 120px;
    padding: 14px 16px;
  }

  .company-table td {
    padding: 14px 16px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-nav {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .cta-inner h2 {
    font-size: 1.5rem;
  }

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

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

@media (max-width: 480px) {
  .logo-main {
    font-size: 1.5rem;
  }

  .hero-title {
    font-size: 1.5rem;
  }

  .items-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .item-card {
    padding: 20px 12px;
  }

  .item-icon {
    width: 48px;
    height: 48px;
  }
}

/* ===================================
   スクロールアニメーション
   =================================== */
.animate-target {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-target.animate-in {
  opacity: 1;
  transform: translateY(0);
}