/*
Theme Name: Silky
Theme URI: https://sss-silky.com/
Author: 株式会社Silky
Author URI: https://sss-silky.com/
Description: 株式会社Silky 公式ホームページ用オリジナルテーマ。沖縄の海をイメージした爽やかで上品なデザイン。
Version: 1.1.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: silky
*/

/* ===== CSS変数（カラーパレット） ===== */
:root {
  --color-main:    #0077B6;
  --color-sub:     #00B4D8;
  --color-accent:  #FFB703;
  --color-text:    #03045E;
  --color-light:   #CAF0F8;
  --color-white:   #FFFFFF;
  --color-gray:    #F8F9FA;
  --color-gray2:   #6C757D;
  --font-jp:       'Noto Sans JP', sans-serif;
  --font-en:       'Cormorant Garamond', serif;
}

/* ===== リセット・ベース ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-jp);
  color: var(--color-text);
  line-height: 1.8;
  background: var(--color-white);
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* ===== タイポグラフィ ===== */
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; }
.section-title {
  font-family: var(--font-en);
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--color-main);
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}
.section-subtitle {
  font-size: 0.9rem;
  color: var(--color-gray2);
  margin-bottom: 3rem;
  letter-spacing: 0.1em;
}

/* ===== レイアウト ===== */
.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
}
section { padding: 80px 0; }
.section-header { text-align: center; margin-bottom: 3rem; }

/* ===== ヘッダー ===== */
#site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 20px rgba(0,119,182,0.1);
  padding: 0 5%;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-en);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-main);
}
.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-main), var(--color-sub));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.1rem;
}
nav.site-nav { display: flex; gap: 2rem; }
nav.site-nav a {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-text);
  transition: color 0.2s;
}
nav.site-nav a:hover { color: var(--color-main); }

/* ===== ヒーローセクション ===== */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-main) 0%, var(--color-sub) 60%, var(--color-light) 100%);
  position: relative;
  overflow: hidden;
  text-align: center;
  color: white;
  padding: 100px 5% 60px;
}
#hero::before {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  top: -200px; right: -200px;
}
#hero::after {
  content: '';
  position: absolute;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  bottom: -150px; left: -100px;
}
.hero-content { position: relative; z-index: 1; }
.hero-en {
  font-family: var(--font-en);
  font-size: clamp(0.8rem, 2vw, 1rem);
  letter-spacing: 0.3em;
  opacity: 0.8;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}
.hero-catch {
  font-size: clamp(1.8rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 1.5rem;
  text-shadow: 0 2px 20px rgba(0,0,0,0.1);
}
.hero-desc {
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  opacity: 0.9;
  max-width: 500px;
  margin: 0 auto 2.5rem;
}
.btn-primary {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-text);
  font-weight: 700;
  padding: 1rem 2.5rem;
  border-radius: 50px;
  font-size: 1rem;
  letter-spacing: 0.05em;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 20px rgba(255,183,3,0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(255,183,3,0.5);
}
.btn-outline {
  display: inline-block;
  border: 2px solid var(--color-main);
  color: var(--color-main);
  font-weight: 700;
  padding: 0.8rem 2rem;
  border-radius: 50px;
  font-size: 0.95rem;
  transition: all 0.2s;
}
.btn-outline:hover {
  background: var(--color-main);
  color: white;
}

/* ===== ABOUTセクション ===== */
#about { background: var(--color-white); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.about-text p { color: var(--color-gray2); margin-bottom: 1rem; }
.about-visual {
  background: linear-gradient(135deg, var(--color-light), var(--color-sub));
  border-radius: 20px;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-en);
  font-size: 5rem;
  color: rgba(255,255,255,0.6);
}

/* ===== SERVICESセクション ===== */
#services { background: var(--color-gray); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}
.service-card {
  background: white;
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 4px 20px rgba(0,119,182,0.08);
  transition: transform 0.3s, box-shadow 0.3s;
  border-top: 4px solid var(--color-main);
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(0,119,182,0.15);
}
.service-card.is-link { cursor: pointer; border-top-color: var(--color-accent); }
.service-icon {
  width: 56px; height: 56px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-main), var(--color-sub));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}
.service-card.is-link .service-icon {
  background: linear-gradient(135deg, var(--color-accent), #ff9f1c);
}
.service-card h3 { font-size: 1rem; margin-bottom: 0.5rem; }
.service-card p { font-size: 0.85rem; color: var(--color-gray2); line-height: 1.6; }
.service-link-badge {
  display: inline-block;
  margin-top: 0.8rem;
  font-size: 0.75rem;
  color: var(--color-accent);
  font-weight: 700;
  letter-spacing: 0.05em;
}

/* ===== MESSAGEセクション ===== */
#message {
  background: linear-gradient(135deg, var(--color-main), var(--color-sub));
  color: white;
}
#message .section-title { color: white; }
#message .section-subtitle { color: rgba(255,255,255,0.7); }
.message-box {
  max-width: 750px;
  margin: 0 auto;
  text-align: center;
}
.message-box p { opacity: 0.9; margin-bottom: 1rem; font-size: 1.05rem; line-height: 2; }
.message-sign {
  margin-top: 2rem;
  font-size: 0.9rem;
  opacity: 0.8;
  font-weight: 700;
}

/* ===== COMPANYセクション ===== */
#company { background: white; }
.company-table {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  border-collapse: collapse;
}
.company-table th, .company-table td {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid #EEF2F7;
  text-align: left;
  font-size: 0.95rem;
}
.company-table th {
  width: 180px;
  color: var(--color-main);
  font-weight: 700;
  background: #F0F8FF;
}

/* ===== CONTACTセクション ===== */
#contact { background: var(--color-gray); }
.contact-box {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}
.contact-box p { color: var(--color-gray2); margin-bottom: 2rem; }
.contact-info { margin-top: 2rem; }
.contact-info a { color: var(--color-main); font-weight: 700; font-size: 1.2rem; }

/* ===== フッター ===== */
#site-footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.7);
  text-align: center;
  padding: 2.5rem 5%;
  font-size: 0.85rem;
}
#site-footer .footer-logo {
  font-family: var(--font-en);
  font-size: 1.2rem;
  color: white;
  margin-bottom: 0.5rem;
}

/* ===== デザインページ用スタイル ===== */
#design-hero {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #03045E 0%, var(--color-main) 50%, var(--color-sub) 100%);
  color: white;
  text-align: center;
  padding: 100px 5% 60px;
}
#design-hero .section-title { color: white; font-size: clamp(2.5rem, 6vw, 4rem); }
#design-hero .hero-desc { opacity: 0.85; max-width: 500px; margin: 1rem auto 2rem; }

.design-services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
}
.design-service-item {
  background: white;
  border-radius: 16px;
  padding: 2rem 1.5rem;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0,119,182,0.08);
  transition: transform 0.3s;
  border-bottom: 4px solid var(--color-sub);
}
.design-service-item:hover { transform: translateY(-6px); }
.design-service-item .icon { font-size: 2.5rem; margin-bottom: 1rem; }
.design-service-item h3 { font-size: 1rem; color: var(--color-main); margin-bottom: 0.5rem; }
.design-service-item p { font-size: 0.82rem; color: var(--color-gray2); }

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
}
.feature-item {
  text-align: center;
  padding: 2rem;
}
.feature-num {
  font-family: var(--font-en);
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--color-light);
  line-height: 1;
  margin-bottom: 0.5rem;
}
.feature-item h3 { color: var(--color-main); margin-bottom: 0.5rem; }
.feature-item p { font-size: 0.9rem; color: var(--color-gray2); }

.flow-steps {
  display: flex;
  gap: 0;
  position: relative;
  flex-wrap: wrap;
  justify-content: center;
}
.flow-step {
  flex: 1;
  min-width: 200px;
  max-width: 260px;
  text-align: center;
  padding: 2rem 1.5rem;
  position: relative;
}
.flow-step-num {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--color-main);
  color: white;
  font-family: var(--font-en);
  font-size: 1.3rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
}
.flow-step h3 { color: var(--color-main); margin-bottom: 0.5rem; font-size: 1rem; }
.flow-step p { font-size: 0.85rem; color: var(--color-gray2); }

.pricing-box {
  max-width: 650px;
  margin: 0 auto;
  background: white;
  border-radius: 20px;
  padding: 3rem;
  text-align: center;
  box-shadow: 0 8px 40px rgba(0,119,182,0.1);
  border: 2px solid var(--color-light);
}
.pricing-box h3 { font-size: 1.5rem; color: var(--color-main); margin-bottom: 1rem; }
.pricing-box p { color: var(--color-gray2); margin-bottom: 2rem; }
.price-label {
  font-size: 0.85rem;
  color: var(--color-accent);
  font-weight: 700;
  background: #FFF9E6;
  display: inline-block;
  padding: 0.3rem 1rem;
  border-radius: 50px;
  margin-bottom: 1rem;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}
.gallery-item {
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--color-light), var(--color-sub));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.85rem;
  opacity: 0.7;
}

/* ===== 特定商取引法ページ ===== */
.tokusho-page-header {
  padding: 120px 0 60px;
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-main) 100%);
  color: white;
  text-align: center;
}
.tokusho-page-label {
  font-family: var(--font-en);
  font-size: 0.85r