/* ============================================
   株式会社さんでぃず - Corporate Website
   Design System & Global Styles
   ============================================ */

/* === Google Fonts === */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&display=swap');

/* === CSS Variables === */
:root {
  /* Colors */
  --color-bg: #f5f3f0;
  --color-bg-alt: #ece9e4;
  --color-text: #3a3632;
  --color-text-light: #6b6560;
  --color-accent: #8b7355;
  --color-accent-hover: #a68b6b;
  --color-gold: #c4a882;
  --color-divider: #d4cfc8;
  --color-white: #faf9f7;
  --color-pearl: #f0ede8;
  --color-vignette: rgba(180, 195, 215, 0.15);

  /* Typography */
  --font-serif-jp: 'Noto Serif JP', 'Yu Mincho', 'Hiragino Mincho ProN', serif;
  --font-serif-en: 'Playfair Display', Georgia, serif;

  /* Spacing */
  --section-padding: 100px 0;
  --container-width: 800px;
  --header-height: 80px;
}

/* === Reset & Base === */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-serif-jp);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.9;
  letter-spacing: 0.05em;
  overflow-x: hidden;
  position: relative;
}

/* Paper grain texture overlay */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* Side vignette gradients */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9998;
  background: linear-gradient(90deg,
    var(--color-vignette) 0%,
    transparent 15%,
    transparent 85%,
    var(--color-vignette) 100%
  );
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

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

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
  font-weight: 400;
  line-height: 1.4;
}

h1 {
  font-family: var(--font-serif-en);
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: 0.03em;
}

h2 {
  font-family: var(--font-serif-en);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  letter-spacing: 0.02em;
}

h3 {
  font-size: 1.3rem;
  font-weight: 500;
}

h4 {
  font-family: var(--font-serif-en);
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: 0.05em;
}

/* === Layout === */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: var(--section-padding);
}

/* === Divider === */
.divider {
  width: 60%;
  max-width: 500px;
  height: 1px;
  background: var(--color-divider);
  margin: 30px auto;
}

/* === Fade-in Animation === */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(245, 243, 240, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid rgba(212, 207, 200, 0.5);
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1100px;
  padding: 0 32px;
}

/* Logo */
.logo {
  font-family: var(--font-serif-en);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
}

.logo:hover {
  color: var(--color-accent);
}

.logo span {
  font-weight: 400;
  font-size: 0.7rem;
  display: block;
  letter-spacing: 0.15em;
  color: var(--color-text-light);
  font-family: var(--font-serif-jp);
  margin-top: -2px;
}

/* Navigation */
.main-nav {
  display: flex;
  align-items: center;
  gap: 36px;
}

.main-nav a {
  font-family: var(--font-serif-en);
  font-size: 0.9rem;
  color: var(--color-text-light);
  letter-spacing: 0.08em;
  position: relative;
  padding-bottom: 2px;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width 0.3s ease;
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-accent);
}

/* Contact Button */
.nav-contact-btn {
  font-family: var(--font-serif-en) !important;
  font-size: 0.85rem !important;
  border: 1px solid var(--color-text-light);
  padding: 8px 24px !important;
  border-radius: 2px;
  transition: all 0.3s ease !important;
}

.nav-contact-btn::after {
  display: none !important;
}

.nav-contact-btn:hover {
  background: var(--color-text);
  color: var(--color-white) !important;
  border-color: var(--color-text);
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--color-text);
  transition: all 0.3s ease;
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   PAGE BANNER
   ============================================ */
.page-banner {
  margin-top: var(--header-height);
  height: 160px;
  background-size: cover;
  background-position: center 30%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    180deg,
    rgba(245, 243, 240, 0.3) 0%,
    rgba(245, 243, 240, 0.1) 50%,
    rgba(245, 243, 240, 0.4) 100%
  );
}

.page-banner h2 {
  position: relative;
  z-index: 1;
  font-family: var(--font-serif-en);
  font-size: 1.6rem;
  color: var(--color-white);
  letter-spacing: 0.15em;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.15);
}

/* ============================================
   HOME - HERO
   ============================================ */
.hero {
  margin-top: var(--header-height);
  position: relative;
  overflow: hidden;
}

.hero-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  object-position: center 40%;
  display: block;
}

.hero-content {
  text-align: center;
  padding: 70px 24px 80px;
}

.hero-content h1 {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 500;
  margin-bottom: 0;
}

.hero-content .divider {
  margin: 35px auto;
}

.hero-content p {
  font-size: 1rem;
  line-height: 2.2;
  color: var(--color-text-light);
}

.hero-cta {
  display: inline-block;
  margin-top: 30px;
  font-family: var(--font-serif-en);
  font-style: italic;
  font-size: 1rem;
  color: var(--color-accent);
  letter-spacing: 0.05em;
  position: relative;
}

.hero-cta::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--color-accent);
  transform: scaleX(0.6);
  transition: transform 0.3s ease;
}

.hero-cta:hover::after {
  transform: scaleX(1);
}

/* ============================================
   HOME - SECTIONS
   ============================================ */
.section-center {
  text-align: center;
}

.section-center h2 {
  margin-bottom: 0;
}

.section-center .divider {
  margin: 30px auto 40px;
}

.section-center p {
  color: var(--color-text-light);
  line-height: 2.2;
}

/* Services Section */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 50px;
  text-align: center;
}

.service-card {
  padding: 40px 20px;
  background: rgba(255, 255, 255, 0.4);
  border: 1px solid rgba(212, 207, 200, 0.4);
  border-radius: 4px;
  transition: all 0.4s ease;
}

.service-card:hover {
  background: rgba(255, 255, 255, 0.7);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
}

.service-icon {
  font-size: 2.4rem;
  margin-bottom: 20px;
  display: block;
  opacity: 0.7;
}

.service-card h3 {
  font-family: var(--font-serif-jp);
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 14px;
  color: var(--color-text);
}

.service-card p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.9;
}

/* ============================================
   ABOUT PAGE
   ============================================ */
.about-section {
  padding: var(--section-padding);
}

.about-section .section-center p {
  max-width: 600px;
  margin: 0 auto;
}

/* Company Info Table */
.company-info-table {
  max-width: 600px;
  margin: 40px auto 0;
  width: 100%;
}

.company-info-table table {
  width: 100%;
  border-collapse: collapse;
}

.company-info-table th,
.company-info-table td {
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--color-divider);
  font-size: 0.95rem;
}

.company-info-table th {
  width: 30%;
  color: var(--color-text-light);
  font-weight: 400;
  white-space: nowrap;
}

.company-info-table td {
  color: var(--color-text);
}

/* Career Timeline */
.career-timeline {
  max-width: 500px;
  margin: 40px auto 0;
  position: relative;
  padding-left: 32px;
}

.career-timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--color-divider);
}

.career-item {
  position: relative;
  padding: 0 0 28px 0;
}

.career-item:last-child {
  padding-bottom: 0;
}

.career-marker {
  position: absolute;
  left: -32px;
  top: 8px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 2px solid var(--color-accent);
  background: var(--color-bg);
  z-index: 1;
}

.career-item:last-child .career-marker {
  background: var(--color-accent);
}

.career-content p {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.7;
}

.career-role {
  font-size: 0.85rem;
  color: var(--color-accent);
  font-weight: 500;
  letter-spacing: 0.03em;
}

/* Code of Conduct */
.conduct-list {
  max-width: 700px;
  margin: 0 auto;
  text-align: left;
}

.conduct-item {
  margin-bottom: 30px;
}

.conduct-item h4 {
  font-family: var(--font-serif-en);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--color-text);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-divider);
  margin-bottom: 10px;
}

.conduct-item p,
.conduct-item li {
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.9;
}

.conduct-item ul {
  list-style: disc;
  padding-left: 20px;
}

.conduct-item li {
  margin-bottom: 4px;
}

/* ============================================
   POLICIES PAGE
   ============================================ */
.policy-section {
  text-align: left;
  max-width: 700px;
  margin: 0 auto;
}

.policy-section h3 {
  font-family: var(--font-serif-en);
  font-size: 1.5rem;
  font-weight: 400;
  text-align: center;
  margin-bottom: 30px;
}

.policy-block {
  margin-bottom: 40px;
}

.policy-block h4 {
  font-size: 1.05rem;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-divider);
  margin-bottom: 12px;
}

.policy-block p,
.policy-block li {
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.9;
}

.policy-block ul {
  list-style: disc;
  padding-left: 20px;
}

.policy-block li {
  margin-bottom: 4px;
}

/* ============================================
   CONTACT PAGE
   ============================================ */
.contact-section {
  text-align: center;
}

.contact-form {
  max-width: 560px;
  margin: 40px auto 0;
  text-align: left;
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-serif-jp);
  font-size: 0.95rem;
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--color-divider);
  border-radius: 2px;
  outline: none;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-accent);
  background: rgba(255, 255, 255, 0.9);
}

.form-group textarea {
  height: 160px;
  resize: vertical;
}

.submit-btn {
  display: inline-block;
  font-family: var(--font-serif-en);
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  padding: 14px 48px;
  border: 1px solid var(--color-text);
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.3s ease;
}

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

.contact-info-below {
  margin-top: 50px;
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 2;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  padding: 60px 0 30px;
  text-align: center;
  border-top: 1px solid var(--color-divider);
  background: rgba(236, 233, 228, 0.3);
}

.footer-logo {
  font-family: var(--font-serif-en);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
}

.footer-logo span {
  display: block;
  font-family: var(--font-serif-jp);
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--color-text-light);
  letter-spacing: 0.15em;
  margin-top: 2px;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin: 24px 0;
}

.footer-nav a {
  font-family: var(--font-serif-en);
  font-size: 0.82rem;
  color: var(--color-text-light);
  letter-spacing: 0.08em;
}

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

.footer-copy {
  font-size: 0.72rem;
  color: var(--color-text-light);
  margin-top: 24px;
  letter-spacing: 0.05em;
  opacity: 0.7;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  :root {
    --section-padding: 70px 0;
    --header-height: 64px;
  }

  /* Mobile nav */
  .menu-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: rgba(245, 243, 240, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    gap: 0;
    padding: 16px 0;
    transform: translateY(-120%);
    opacity: 0;
    transition: all 0.4s ease;
    border-bottom: 1px solid var(--color-divider);
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
  }

  .main-nav a {
    padding: 14px 32px;
    width: 100%;
    text-align: center;
  }

  .nav-contact-btn {
    margin: 8px 32px;
    width: calc(100% - 64px);
    text-align: center;
  }

  /* Hero */
  .hero-image {
    height: 160px;
  }

  .hero-content {
    padding: 50px 20px 60px;
  }

  /* Services */
  .services-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  /* Page banner */
  .page-banner {
    height: 120px;
  }

  /* Footer */
  .footer-nav {
    flex-direction: column;
    gap: 12px;
  }

  /* Table */
  .company-info-table th,
  .company-info-table td {
    display: block;
    padding: 8px 0;
  }

  .company-info-table th {
    border-bottom: none;
    padding-bottom: 0;
    font-size: 0.82rem;
  }

  .company-info-table td {
    padding-top: 2px;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.8rem;
  }

  h2 {
    font-size: 1.4rem;
  }
}