/* ===================================
   工藤鍼灸治療院 - 和モダン Design System
   =================================== */

:root {
  /* Color Palette */
  --color-ink: #1a1a1a;          /* 墨 */
  --color-vermilion: #B0292F;    /* 朱 */
  --color-vermilion-deep: #8B1F25;
  --color-gold: #C9A96E;         /* 金 */
  --color-cream: #F7F3EC;        /* 生成り */
  --color-paper: #FAFAF8;        /* 白磁 */
  --color-text: #2C2825;
  --color-text-sub: #6B6359;
  --color-line: #D9D2C5;
  --color-shadow: rgba(26, 26, 26, 0.08);

  /* Typography */
  --font-serif: "Noto Serif JP", "Yu Mincho", "游明朝", serif;
  --font-sans: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;

  /* Spacing */
  --container-max: 1200px;
  --container-narrow: 880px;

  /* Easing */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--color-paper);
  color: var(--color-text);
  line-height: 1.85;
  font-feature-settings: "palt";
  -webkit-font-smoothing: antialiased;
}

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

.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 24px;
}

/* =========== Typography =========== */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.4;
  color: var(--color-ink);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); margin-bottom: 1.5rem; }
h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); margin-bottom: 1rem; }

p { color: var(--color-text); margin-bottom: 1.2em; }

.subtitle {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  letter-spacing: 0.4em;
  color: var(--color-vermilion);
  text-transform: uppercase;
  margin-bottom: 1rem;
  font-weight: 500;
}

.section-title {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title::after {
  content: "";
  display: block;
  width: 40px;
  height: 2px;
  background: var(--color-vermilion);
  margin: 1.5rem auto 0;
}

/* =========== Header =========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(250, 250, 248, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-line);
  z-index: 1000;
  padding: 16px 0;
  transition: padding 0.3s var(--ease-out);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.brand {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--color-ink);
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.brand-en {
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--color-vermilion);
  margin-top: 2px;
}

.nav-list {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-list a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  position: relative;
  transition: color 0.2s;
}

.nav-list a:hover {
  color: var(--color-vermilion);
}

.nav-list a::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-vermilion);
  transition: width 0.3s var(--ease-out);
}

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

.cta-button {
  background: var(--color-ink);
  color: var(--color-paper);
  padding: 14px 32px;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 500;
  letter-spacing: 0.1em;
  font-size: 0.85rem;
  transition: all 0.3s var(--ease-out);
  border: 1px solid var(--color-ink);
  display: inline-block;
}

.cta-button:hover {
  background: var(--color-vermilion);
  border-color: var(--color-vermilion);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(176, 41, 47, 0.25);
}

.cta-button.outline {
  background: transparent;
  color: var(--color-ink);
}

.cta-button.outline:hover {
  background: var(--color-ink);
  color: var(--color-paper);
}

/* =========== Hero =========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-cream) 0%, var(--color-paper) 100%);
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 55%;
  height: 100%;
  background: url("../images/hero.jpg") center/cover no-repeat;
  opacity: 0.95;
  clip-path: polygon(15% 0, 100% 0, 100% 100%, 0 100%);
}

.hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 45%;
  height: 100%;
  background: linear-gradient(to right, var(--color-paper) 0%, transparent 100%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 580px;
}

.hero-vertical {
  position: absolute;
  right: 40px;
  top: 50%;
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  font-family: var(--font-serif);
  font-size: 0.8rem;
  letter-spacing: 0.5em;
  color: var(--color-text-sub);
  z-index: 3;
}

.hero-tag {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid var(--color-vermilion);
  color: var(--color-vermilion);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  margin-bottom: 2rem;
  font-family: var(--font-serif);
}

.hero h1 {
  margin-bottom: 1.5rem;
}

.hero h1 .accent {
  color: var(--color-vermilion);
}

.hero p {
  font-size: 1.05rem;
  color: var(--color-text-sub);
  margin-bottom: 2.5rem;
  line-height: 2.1;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* =========== Section Common =========== */
section {
  padding: 100px 0;
}

.section-bg-cream { background: var(--color-cream); }
.section-bg-ink {
  background: var(--color-ink);
  color: var(--color-paper);
}

.section-bg-ink h1, .section-bg-ink h2, .section-bg-ink h3 {
  color: var(--color-paper);
}

.section-bg-ink p { color: rgba(250, 250, 248, 0.85); }

/* =========== Director Story =========== */
.story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.story-img {
  position: relative;
  aspect-ratio: 4/5;
  background: var(--color-cream);
  overflow: hidden;
  border-radius: 4px;
}

.story-img::before {
  content: "";
  position: absolute;
  top: 20px;
  left: 20px;
  right: -20px;
  bottom: -20px;
  border: 1px solid var(--color-vermilion);
  z-index: -1;
}

.story-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.story-text .subtitle { text-align: left; }
.story-text h2 { margin-bottom: 2rem; }
.story-text h2::after { display: none; }

.story-quote {
  border-left: 3px solid var(--color-vermilion);
  padding: 0.5rem 0 0.5rem 1.5rem;
  margin: 2rem 0;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 1.9;
}

/* =========== Symptoms Cards =========== */
.symptoms-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 3rem;
}

.symptom-card {
  background: var(--color-paper);
  padding: 50px 40px;
  border: 1px solid var(--color-line);
  position: relative;
  transition: all 0.4s var(--ease-out);
  text-decoration: none;
  color: inherit;
  overflow: hidden;
}

.symptom-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px var(--color-shadow);
  border-color: var(--color-vermilion);
}

.symptom-num {
  font-family: var(--font-serif);
  font-size: 4rem;
  color: var(--color-vermilion);
  opacity: 0.15;
  position: absolute;
  top: 10px;
  right: 20px;
  line-height: 1;
}

.symptom-card h3 { margin-bottom: 0.8rem; }

.symptom-card p {
  color: var(--color-text-sub);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.symptom-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-vermilion);
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}

.symptom-link::after {
  content: "→";
  transition: transform 0.3s;
}

.symptom-card:hover .symptom-link::after {
  transform: translateX(8px);
}

/* =========== Features =========== */
.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  margin-top: 3rem;
}

.feature {
  text-align: center;
  padding: 30px 20px;
}

.feature-icon {
  width: 70px;
  height: 70px;
  margin: 0 auto 1.5rem;
  background: var(--color-cream);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--color-vermilion);
  border: 1px solid var(--color-vermilion);
}

.feature h3 {
  font-size: 1.05rem;
  margin-bottom: 0.6rem;
}

.feature p { font-size: 0.9rem; color: var(--color-text-sub); }

/* =========== Testimonials =========== */
.testimonials {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
  margin-top: 3rem;
}

.testimonial {
  background: var(--color-paper);
  padding: 40px;
  border-left: 3px solid var(--color-vermilion);
  position: relative;
}

.testimonial-quote {
  font-family: var(--font-serif);
  font-size: 5rem;
  color: var(--color-vermilion);
  opacity: 0.15;
  position: absolute;
  top: 20px;
  right: 30px;
  line-height: 1;
}

.testimonial-text {
  font-size: 1rem;
  line-height: 1.9;
  margin-bottom: 1.5rem;
}

.testimonial-author {
  font-size: 0.85rem;
  color: var(--color-text-sub);
  letter-spacing: 0.1em;
}

/* =========== Blog =========== */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 3rem;
}

.blog-card {
  text-decoration: none;
  color: inherit;
  display: block;
  transition: transform 0.3s var(--ease-out);
}

.blog-card:hover { transform: translateY(-6px); }

.blog-thumb {
  aspect-ratio: 16/10;
  background: var(--color-cream);
  margin-bottom: 1.5rem;
  overflow: hidden;
}

.blog-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s; }
.blog-card:hover .blog-thumb img { transform: scale(1.06); }

.blog-meta {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--color-text-sub);
  margin-bottom: 0.5rem;
}

.blog-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--color-ink);
}

/* =========== CTA Section =========== */
.cta-section {
  background: linear-gradient(135deg, var(--color-ink) 0%, #2a2a2a 100%);
  color: var(--color-paper);
  padding: 100px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "鍼灸";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-serif);
  font-size: 30rem;
  color: rgba(176, 41, 47, 0.07);
  font-weight: 700;
  pointer-events: none;
  z-index: 0;
}

.cta-section > * { position: relative; z-index: 1; }

.cta-section h2 { color: var(--color-paper); margin-bottom: 1.5rem; }
.cta-section h2::after { background: var(--color-gold); }

.cta-section p {
  color: rgba(250, 250, 248, 0.85);
  max-width: 600px;
  margin: 0 auto 3rem;
}

.cta-section .cta-button {
  background: var(--color-vermilion);
  border-color: var(--color-vermilion);
  padding: 18px 48px;
  font-size: 0.95rem;
}

/* =========== Footer =========== */
.site-footer {
  background: var(--color-ink);
  color: rgba(250, 250, 248, 0.7);
  padding: 60px 0 30px;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 50px;
  margin-bottom: 3rem;
}

.footer-brand { font-family: var(--font-serif); font-size: 1.2rem; color: var(--color-paper); margin-bottom: 1rem; }
.footer-info p { font-size: 0.85rem; line-height: 1.8; color: rgba(250, 250, 248, 0.6); }

.footer-title {
  color: var(--color-gold);
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  margin-bottom: 1.2rem;
  font-family: var(--font-serif);
}

.footer-list { list-style: none; }
.footer-list li { margin-bottom: 0.6rem; }
.footer-list a { color: rgba(250, 250, 248, 0.7); text-decoration: none; transition: color 0.2s; font-size: 0.85rem; }
.footer-list a:hover { color: var(--color-vermilion); }

.footer-bottom {
  border-top: 1px solid rgba(250, 250, 248, 0.1);
  padding-top: 2rem;
  text-align: center;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: rgba(250, 250, 248, 0.4);
}

/* =========== Symptom Article =========== */
.article-hero {
  background: var(--color-cream);
  padding: 160px 0 80px;
  text-align: center;
}

.article-hero .breadcrumb {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--color-text-sub);
  margin-bottom: 2rem;
}

.article-hero .breadcrumb a { color: var(--color-vermilion); text-decoration: none; }

.article-body {
  padding: 80px 0 100px;
  max-width: 760px;
  margin: 0 auto;
}

.article-body h2 {
  margin-top: 3rem;
  margin-bottom: 1.5rem;
  padding-left: 1rem;
  border-left: 4px solid var(--color-vermilion);
  font-size: 1.6rem;
}

.article-body h3 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  font-size: 1.2rem;
  color: var(--color-vermilion-deep);
}

.article-body p {
  margin-bottom: 1.5em;
  line-height: 2;
  font-size: 1.02rem;
}

.article-body ul, .article-body ol {
  margin: 1rem 0 2rem 1.5rem;
  line-height: 2;
}

.article-body li { margin-bottom: 0.5rem; }

.article-body .lead {
  font-size: 1.15rem;
  font-family: var(--font-serif);
  line-height: 2.1;
  color: var(--color-text);
  padding: 2rem;
  background: var(--color-cream);
  border-radius: 4px;
  margin: 2rem 0;
}

.article-body .callout {
  background: linear-gradient(135deg, #FFF8F0 0%, var(--color-cream) 100%);
  padding: 2rem;
  margin: 2rem 0;
  border-radius: 4px;
  border-left: 4px solid var(--color-gold);
}

.article-body .callout-title {
  font-family: var(--font-serif);
  color: var(--color-vermilion-deep);
  margin-bottom: 0.8rem;
}

/* =========== Animations =========== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fade-up {
  opacity: 0;
  animation: fadeInUp 1s var(--ease-out) forwards;
}

.animate-fade-up.delay-1 { animation-delay: 0.2s; }
.animate-fade-up.delay-2 { animation-delay: 0.4s; }
.animate-fade-up.delay-3 { animation-delay: 0.6s; }

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1s var(--ease-out), transform 1s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* =========== Responsive =========== */
@media (max-width: 968px) {
  .nav-list { display: none; }
  .hero::before { width: 100%; opacity: 0.3; clip-path: none; }
  .hero::after { width: 100%; background: linear-gradient(to bottom, rgba(250, 250, 248, 0.7) 0%, var(--color-paper) 100%); }
  .story { grid-template-columns: 1fr; gap: 50px; }
  .symptoms-grid { grid-template-columns: 1fr; }
  .features { grid-template-columns: repeat(2, 1fr); }
  .testimonials { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .hero-vertical { display: none; }
  section { padding: 60px 0; }
}

@media (max-width: 600px) {
  .features { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .cta-button { text-align: center; }
}