/*
Theme Name: 小柳通商 コーポレートテーマ
Theme URI: https://koyanagi-tsusho.com
Author: 小柳通商合同会社
Author URI: https://koyanagi-tsusho.com
Description: 小柳通商合同会社のコーポレートサイト専用テーマ。和モダン × グローバルのデザインコンセプト。
Version: 1.0.0
License: Private
Text Domain: koyanagi-tsusho
*/

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

/* ─── CSS Variables ─────────────────────────────────────────────────────────── */
:root {
  --color-primary:      #1e2a4a;
  --color-primary-dark: #111827;
  --color-gold:         #b8922a;
  --color-gold-light:   #d4a84b;
  --color-forest:       #3a6b4a;
  --color-hakuji:       #f9f7f3;
  --color-warm-gray:    #ede9e3;
  --color-charcoal:     #1f2937;
  --font-serif:         'Noto Serif JP', 'Georgia', serif;
  --font-sans:          'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
  --font-display:       'Cormorant Garamond', 'Georgia', serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background-color: var(--color-hakuji);
  color: var(--color-charcoal);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Animations ────────────────────────────────────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes scrollLine {
  0%   { opacity: 1; transform: scaleY(1); transform-origin: top; }
  100% { opacity: 0; transform: scaleY(0); transform-origin: bottom; }
}

.fade-in-up { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.fade-in-up.visible { opacity: 1; transform: translateY(0); }

/* ─── Navigation ────────────────────────────────────────────────────────────── */
#site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background-color: rgba(17, 24, 39, 0.85);
  backdrop-filter: blur(8px);
  transition: background-color 0.5s ease, border-bottom 0.5s ease;
}
#site-header.scrolled {
  background-color: rgba(17, 24, 39, 0.97);
  border-bottom: 1px solid rgba(184, 146, 42, 0.3);
}
#site-header .header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}
.site-logo img {
  height: 44px;
  width: auto;
  filter: invert(1) brightness(2);
}
.site-logo .logo-text {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 500;
  color: #f9f7f3;
  letter-spacing: 0.05em;
}
.main-nav { display: flex; align-items: center; gap: 36px; }
.main-nav a {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: rgba(249, 247, 243, 0.88);
  transition: color 0.3s;
  position: relative;
}
.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 1px;
  background-color: var(--color-gold);
  transform: scaleX(0);
  transition: transform 0.3s;
}
.main-nav a:hover { color: var(--color-gold-light); }
.main-nav a:hover::after { transform: scaleX(1); }

/* Mobile menu */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 1px;
  background-color: #f9f7f3;
  transition: transform 0.3s, opacity 0.3s;
}
.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(3px, 3px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(3px, -3px); }

.mobile-nav {
  display: none;
  background-color: rgba(17, 24, 39, 0.97);
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.3s ease;
}
.mobile-nav.open { max-height: 400px; }
.mobile-nav a {
  display: block;
  padding: 14px 24px;
  font-size: 0.875rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: rgba(249, 247, 243, 0.88);
  border-bottom: 1px solid rgba(184, 146, 42, 0.15);
  font-family: var(--font-sans);
}

/* ─── Section Label ─────────────────────────────────────────────────────────── */
.section-label { margin-bottom: 32px; }
.section-label .en {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  font-weight: 300;
  color: var(--color-gold);
  margin-bottom: 8px;
}
.section-label .divider {
  width: 40px;
  height: 1px;
  background-color: var(--color-gold);
  margin-bottom: 16px;
}
.section-label h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 500;
  color: var(--color-charcoal);
  line-height: 1.4;
}

/* ─── Hero Section ──────────────────────────────────────────────────────────── */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: #111827;
}
.hero-bg {
  position: absolute;
  inset: 0;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  opacity: 0.6;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(17,24,39,0.90) 0%, rgba(17,24,39,0.55) 55%, rgba(17,24,39,0.35) 100%);
}
.hero-overlay-bottom {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 40%;
  background: linear-gradient(to top, rgba(17,24,39,1) 0%, rgba(17,24,39,0.95) 30%, rgba(17,24,39,0.6) 60%, transparent 100%);
}
.hero-line {
  position: absolute;
  left: 64px;
  top: 25%; bottom: 25%;
  width: 1px;
  background-color: rgba(184, 146, 42, 0.5);
}
.hero-content {
  position: relative;
  z-index: 10;
  padding-top: 80px;
  max-width: 640px;
}
.hero-sub {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.4em;
  font-weight: 300;
  color: var(--color-gold);
  margin-bottom: 24px;
}
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 500;
  color: #f9f7f3;
  line-height: 1.3;
  margin-bottom: 24px;
  text-shadow: 0 2px 20px rgba(17,24,39,0.5);
}
.hero-title .accent { color: #d4a84b; }
.hero-divider {
  width: 48px; height: 1px;
  background-color: var(--color-gold);
  margin-bottom: 24px;
}
.hero-desc {
  font-size: 0.9rem;
  line-height: 1.8;
  font-weight: 300;
  color: rgba(249,247,243,0.85);
  max-width: 480px;
  margin-bottom: 40px;
}
.hero-buttons { display: flex; flex-wrap: wrap; gap: 16px; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 28px;
  font-size: 0.875rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  background-color: var(--color-gold);
  color: #111827;
  border: 1px solid var(--color-gold);
  transition: background-color 0.3s, border-color 0.3s;
  font-family: var(--font-sans);
}
.btn-primary:hover { background-color: var(--color-gold-light); border-color: var(--color-gold-light); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 28px;
  font-size: 0.875rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  background-color: transparent;
  color: #f9f7f3;
  border: 1px solid rgba(249,247,243,0.4);
  transition: border-color 0.3s;
  font-family: var(--font-sans);
}
.btn-outline:hover { border-color: rgba(249,247,243,1); }
.scroll-indicator {
  position: absolute;
  bottom: 32px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.scroll-indicator span {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--color-gold);
}
.scroll-line {
  width: 1px; height: 48px;
  background: linear-gradient(to bottom, var(--color-gold), transparent);
  animation: scrollLine 2s infinite;
}

/* ─── About Section ─────────────────────────────────────────────────────────── */
#about {
  padding: 80px 0 112px;
  background-color: var(--color-hakuji);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  align-items: start;
}
.about-text p {
  font-size: 0.9rem;
  line-height: 1.9;
  font-weight: 300;
  color: #374151;
  margin-bottom: 20px;
}
.about-text p:first-child { font-size: 1rem; color: #1f2937; }
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.value-card {
  padding: 24px;
  background-color: #fff;
  border-left: 2px solid var(--color-gold);
  box-shadow: 0 2px 16px rgba(31,41,55,0.06);
}
.value-card .en {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  margin-bottom: 8px;
}
.value-card h4 {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-charcoal);
  margin-bottom: 8px;
}
.value-card p { font-size: 0.75rem; line-height: 1.7; color: #6b7280; }

/* ─── Services Overview ─────────────────────────────────────────────────────── */
#services {
  padding: 64px 0 80px;
  background-color: #1e2a4a;
}
.services-header { text-align: center; margin-bottom: 48px; }
.services-header .en {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: var(--color-gold);
  margin-bottom: 12px;
}
.services-header h2 {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 500;
  color: #f9f7f3;
}
.services-header .divider {
  width: 40px; height: 1px;
  background-color: var(--color-gold);
  margin: 16px auto 0;
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
.service-icon-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 24px 16px;
  background-color: rgba(255,255,255,0.06);
  border: 1px solid rgba(184,146,42,0.15);
  transition: background-color 0.3s, border-color 0.3s;
  cursor: pointer;
}
.service-icon-card:hover {
  background-color: rgba(255,255,255,0.1);
  border-color: rgba(184,146,42,0.5);
}
.service-icon-card .icon { font-size: 2rem; margin-bottom: 12px; }
.service-icon-card h3 {
  font-family: var(--font-serif);
  font-size: 0.875rem;
  font-weight: 500;
  color: #f9f7f3;
  line-height: 1.4;
  margin-bottom: 6px;
}
.service-icon-card .sub {
  font-family: var(--font-display);
  font-size: 0.7rem;
  color: var(--color-gold);
}

/* ─── Service Card ──────────────────────────────────────────────────────────── */
.service-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  overflow: hidden;
  box-shadow: 0 4px 32px rgba(31,41,55,0.08);
  margin-bottom: 32px;
}
.service-card.reverse .card-image { order: 2; }
.service-card.reverse .card-body  { order: 1; }
.card-image {
  position: relative;
  overflow: hidden;
  min-height: 300px;
}
.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s ease;
}
.service-card:hover .card-image img { transform: scale(1.05); }
.card-body {
  padding: 48px;
  background-color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.card-body .category {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  color: var(--color-gold);
  margin-bottom: 12px;
}
.card-body h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-charcoal);
  margin-bottom: 16px;
  line-height: 1.4;
}
.card-body .divider {
  width: 40px; height: 1px;
  background-color: var(--color-gold);
  margin-bottom: 16px;
}
.card-body p {
  font-size: 0.875rem;
  line-height: 1.8;
  font-weight: 300;
  color: #4b5563;
  margin-bottom: 24px;
}
.card-body ul { display: flex; flex-direction: column; gap: 8px; }
.card-body ul li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.875rem;
  font-weight: 300;
  color: #374151;
}
.card-body ul li::before {
  content: '';
  width: 4px; height: 4px;
  border-radius: 50%;
  background-color: var(--color-gold);
  flex-shrink: 0;
}

/* ─── International Section ─────────────────────────────────────────────────── */
#international {
  padding: 80px 0 112px;
  background-color: var(--color-hakuji);
}
#international .section-intro {
  font-size: 0.9rem;
  line-height: 1.8;
  font-weight: 300;
  color: #4b5563;
  max-width: 640px;
  margin-bottom: 48px;
}

/* ─── Community Section ─────────────────────────────────────────────────────── */
#community {
  padding: 80px 0 112px;
  background-color: #f0f5f1;
}
#community .section-label h2 { color: #1a3a2a; }
#community .section-intro {
  font-size: 0.9rem;
  line-height: 1.8;
  font-weight: 300;
  color: #3a5a4a;
  max-width: 640px;
  margin-bottom: 48px;
}

/* ─── Contact Section ───────────────────────────────────────────────────────── */
#contact {
  padding: 80px 0 112px;
  background-color: #111827;
  position: relative;
  overflow: hidden;
}
.contact-deco-line {
  position: absolute;
  right: 64px; top: 0; bottom: 0;
  width: 1px;
  background-color: rgba(184,146,42,0.2);
}
.contact-deco-line2 {
  position: absolute;
  right: 96px; top: 0; bottom: 0;
  width: 1px;
  background-color: rgba(184,146,42,0.1);
}
.contact-inner { position: relative; z-index: 10; max-width: 720px; }
.contact-inner .en {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: var(--color-gold);
  margin-bottom: 12px;
}
.contact-inner .divider {
  width: 40px; height: 1px;
  background-color: var(--color-gold);
  margin-bottom: 20px;
}
.contact-inner h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 500;
  color: #f9f7f3;
  margin-bottom: 24px;
}
.contact-inner .lead {
  font-size: 0.9rem;
  line-height: 1.8;
  font-weight: 300;
  color: rgba(249,247,243,0.8);
  margin-bottom: 40px;
}

/* Contact Form 7 スタイル */
.wpcf7 { width: 100%; }
.wpcf7-form { display: flex; flex-direction: column; gap: 0; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}
.form-group { display: flex; flex-direction: column; }
.form-group label {
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  margin-bottom: 8px;
  font-weight: 400;
}
.form-group label .required { color: #ef4444; margin-left: 4px; }
.wpcf7-form-control-wrap { display: block; }
.wpcf7 input[type="text"],
.wpcf7 input[type="email"],
.wpcf7 select,
.wpcf7 textarea {
  width: 100%;
  padding: 14px 16px;
  background-color: rgba(255,255,255,0.06);
  border: 1px solid rgba(184,146,42,0.25);
  color: #f9f7f3;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 300;
  outline: none;
  transition: border-color 0.3s, background-color 0.3s;
  -webkit-appearance: none;
  border-radius: 0;
  margin-bottom: 0;
}
.wpcf7 input[type="text"]:focus,
.wpcf7 input[type="email"]:focus,
.wpcf7 select:focus,
.wpcf7 textarea:focus {
  border-color: rgba(184,146,42,0.7);
  background-color: rgba(255,255,255,0.09);
}
.wpcf7 input::placeholder,
.wpcf7 textarea::placeholder { color: rgba(249,247,243,0.3); }
.wpcf7 select option { background-color: #1f2937; color: #f9f7f3; }
.wpcf7 textarea { resize: vertical; min-height: 160px; }
.form-field { padding: 16px 0; border-bottom: 1px solid rgba(184,146,42,0.15); }
.wpcf7-submit {
  margin-top: 32px;
  padding: 16px 40px !important;
  background-color: var(--color-gold) !important;
  color: #111827 !important;
  border: 1px solid var(--color-gold) !important;
  font-size: 0.875rem !important;
  font-weight: 300 !important;
  letter-spacing: 0.15em !important;
  cursor: pointer;
  transition: background-color 0.3s !important;
  font-family: var(--font-sans) !important;
  align-self: flex-start;
  border-radius: 0 !important;
}
.wpcf7-submit:hover { background-color: var(--color-gold-light) !important; }
.wpcf7-response-output {
  margin-top: 16px !important;
  padding: 12px 16px !important;
  border: 1px solid rgba(184,146,42,0.4) !important;
  color: var(--color-gold) !important;
  font-size: 0.875rem !important;
  font-weight: 300 !important;
}

/* ─── Footer ────────────────────────────────────────────────────────────────── */
#site-footer {
  background-color: #0f172a;
  border-top: 1px solid rgba(184,146,42,0.3);
  padding: 64px 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand img {
  height: 56px;
  width: auto;
  filter: invert(1) brightness(2);
  margin-bottom: 12px;
}
.footer-brand h3 {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 500;
  color: #f9f7f3;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 0.875rem;
  line-height: 1.8;
  font-weight: 300;
  color: rgba(249,247,243,0.6);
}
.footer-col h4 {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  font-weight: 500;
  color: var(--color-gold);
  margin-bottom: 20px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.footer-col ul li a,
.footer-col ul li span {
  font-size: 0.875rem;
  font-weight: 300;
  color: rgba(249,247,243,0.6);
  transition: color 0.2s;
}
.footer-col ul li a:hover { color: var(--color-gold-light); }
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(184,146,42,0.15);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-bottom p {
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  color: rgba(249,247,243,0.35);
}
.footer-bottom .en {
  font-family: var(--font-display);
  letter-spacing: 0.2em;
}

/* ─── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(3, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .menu-toggle { display: flex; }
  .mobile-nav { display: block; }
  .site-logo .logo-text { display: none; }

  .hero-line { display: none; }
  .hero-content { max-width: 100%; }

  .service-card { grid-template-columns: 1fr; }
  .service-card.reverse .card-image { order: 1; }
  .service-card.reverse .card-body  { order: 2; }
  .card-body { padding: 32px 24px; }

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

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }

  .form-row { grid-template-columns: 1fr; }
  .contact-deco-line, .contact-deco-line2 { display: none; }
}

@media (max-width: 480px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-buttons { flex-direction: column; }
  .btn-primary, .btn-outline { justify-content: center; }
}