/* =============================================
   ふらんく 公式サイト - スタイルシート
   和風・岩手テイスト
   ============================================= */

/* ---------- CSS 変数 ---------- */
:root {
  --color-bg: #F5F0E8;
  --color-bg-alt: #EDE7D8;
  --color-dark: #1C2826;
  --color-forest: #2D4A3E;
  --color-forest-light: #3D6B5A;
  --color-gold: #8B6914;
  --color-vermillion: #B03A2E;
  --color-text: #2C2C2C;
  --color-text-muted: #666;
  --color-border: #D0C8B0;
  --color-white: #FDFAF4;

  --font-serif: 'Noto Serif JP', serif;
  --font-sans: 'Noto Sans JP', sans-serif;

  --container-max: 1100px;
  --section-pad: 100px;
  --radius: 4px;
  --transition: 0.3s ease;
}

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

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

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

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

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

/* ---------- ヘッダー / ナビ ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(245, 240, 232, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  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);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-forest);
  letter-spacing: 0.1em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: 0.05em;
  transition: color var(--transition);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-forest);
  transition: width var(--transition);
}

.nav-link:hover {
  color: var(--color-forest);
}

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

.nav-link--cta {
  padding: 8px 20px;
  background: var(--color-forest);
  color: var(--color-white);
  border-radius: var(--radius);
  letter-spacing: 0.05em;
}

.nav-link--cta::after {
  display: none;
}

.nav-link--cta:hover {
  background: var(--color-forest-light);
  color: var(--color-white);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-forest);
  transition: all var(--transition);
}

/* ---------- ヒーローセクション ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(160deg, #1C2826 0%, #2D4A3E 40%, #1C3830 70%, #0F2218 100%);
}

/* 和紙っぽいテクスチャ */
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(ellipse at 20% 80%, rgba(139,105,20,0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(176,58,46,0.08) 0%, transparent 40%);
}

/* 山のシルエット（装飾） */
.hero-bg::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 200'%3E%3Cpath d='M0,200 L0,120 L180,60 L360,100 L540,30 L720,80 L900,20 L1080,70 L1260,40 L1440,90 L1440,200 Z' fill='rgba(0,0,0,0.3)'/%3E%3Cpath d='M0,200 L0,150 L240,100 L480,130 L720,80 L960,120 L1200,90 L1440,130 L1440,200 Z' fill='rgba(0,0,0,0.2)'/%3E%3C/svg%3E")
    no-repeat bottom center / cover;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--color-white);
  padding: 80px 24px 60px;
}

.hero-sub {
  font-size: 0.8125rem;
  letter-spacing: 0.25em;
  color: rgba(245,240,232,0.65);
  margin-bottom: 20px;
  font-family: var(--font-serif);
}

.hero-name {
  font-family: var(--font-serif);
  font-size: 5rem;
  font-size: clamp(3.5rem, 10vw, 7rem);
  font-weight: 700;
  letter-spacing: 0.15em;
  line-height: 1;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #F5F0E8 30%, #D4AF5A 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-size: clamp(1rem, 2.5vw, 1.375rem);
  font-weight: 300;
  letter-spacing: 0.12em;
  color: rgba(245,240,232,0.85);
  margin-bottom: 36px;
}

.hero-labels {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 48px;
}

.label {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid rgba(245,240,232,0.35);
  border-radius: 2px;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: rgba(245,240,232,0.8);
}

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

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}

.hero-scroll span {
  display: block;
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, rgba(245,240,232,0), rgba(245,240,232,0.6));
  animation: scrollLine 1.8s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; opacity: 0; }
  50% { transform: scaleY(1); transform-origin: top; opacity: 1; }
  100% { transform: scaleY(1); transform-origin: bottom; opacity: 0; }
}

/* ---------- ボタン ---------- */
.btn {
  display: inline-block;
  padding: 14px 36px;
  font-family: var(--font-serif);
  font-size: 0.9375rem;
  letter-spacing: 0.1em;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}

.btn--primary {
  background: var(--color-vermillion);
  color: #fff;
}

.btn--primary:hover {
  background: #C0392B;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(176,58,46,0.35);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border: 1px solid rgba(245,240,232,0.5);
}

.btn--outline:hover {
  background: rgba(245,240,232,0.1);
  border-color: rgba(245,240,232,0.8);
}

.btn--full {
  width: 100%;
  text-align: center;
}

/* ---------- セクション共通 ---------- */
.section {
  padding: var(--section-pad) 0;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-en {
  font-family: var(--font-serif);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: var(--color-forest);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  color: var(--color-dark);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.section-line {
  width: 48px;
  height: 2px;
  background: var(--color-vermillion);
  margin: 0 auto;
}

.section-desc {
  margin-top: 24px;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 2;
}

/* ---------- プロフィール ---------- */
.about {
  background: var(--color-white);
}

.about-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 64px;
  align-items: start;
}

.about-photo-placeholder {
  aspect-ratio: 3/4;
  background: linear-gradient(145deg, var(--color-bg-alt), var(--color-border));
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  letter-spacing: 0.1em;
}

.about-name {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-forest);
  letter-spacing: 0.12em;
  margin-bottom: 4px;
}

.about-location {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  margin-bottom: 24px;
}

.about-bio {
  font-size: 0.9375rem;
  line-height: 2.1;
  color: var(--color-text);
  margin-bottom: 32px;
  border-left: 3px solid var(--color-forest);
  padding-left: 20px;
}

.about-info {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px 24px;
  font-size: 0.875rem;
}

.about-info dt {
  font-weight: 500;
  color: var(--color-forest);
  white-space: nowrap;
}

.about-info dd {
  color: var(--color-text);
}

/* ---------- サービス ---------- */
.services {
  background: var(--color-bg);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 36px 28px;
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-forest), var(--color-gold));
  transform: scaleX(0);
  transition: transform var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(45,74,62,0.12);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 20px;
  color: var(--color-forest);
}

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

.service-title {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-dark);
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}

.service-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.9;
}

.services-note {
  text-align: center;
  margin-top: 32px;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* ---------- 実績 ---------- */
.works {
  background: var(--color-dark);
}

.works .section-en {
  color: rgba(245,240,232,0.5);
}

.works .section-title {
  color: var(--color-white);
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.work-card {
  border: 1px solid rgba(245,240,232,0.12);
  padding: 24px 28px;
  transition: all var(--transition);
  background: rgba(245,240,232,0.03);
}

.work-card:hover {
  background: rgba(245,240,232,0.06);
  border-color: rgba(245,240,232,0.25);
}

.work-tag {
  display: inline-block;
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--color-gold);
  border: 1px solid rgba(139,105,20,0.5);
  padding: 2px 10px;
  border-radius: 2px;
  margin-bottom: 12px;
}

.work-title {
  font-family: var(--font-serif);
  font-size: 0.9375rem;
  color: rgba(245,240,232,0.9);
  margin-bottom: 8px;
  line-height: 1.6;
}

.work-year {
  font-size: 0.8125rem;
  color: rgba(245,240,232,0.4);
}

.works-note {
  text-align: center;
  margin-top: 32px;
  font-size: 0.8125rem;
  color: rgba(245,240,232,0.35);
}

/* ---------- 音声サンプル ---------- */
.samples {
  background: var(--color-bg-alt);
}

.samples-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.sample-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 28px 24px;
}

.sample-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-forest);
  margin-bottom: 4px;
}

.sample-desc {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.sample-audio {
  width: 100%;
  height: 40px;
  accent-color: var(--color-forest);
}

.samples-note {
  text-align: center;
  margin-top: 32px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ---------- お問い合わせ ---------- */
.contact {
  background: var(--color-white);
}

.contact-form {
  max-width: 640px;
  margin: 0 auto;
}

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

.form-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-dark);
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}

.required {
  display: inline-block;
  font-size: 0.6875rem;
  background: var(--color-vermillion);
  color: #fff;
  padding: 1px 6px;
  border-radius: 2px;
  letter-spacing: 0.05em;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-forest);
  box-shadow: 0 0 0 3px rgba(45,74,62,0.1);
}

.form-group textarea {
  resize: vertical;
  line-height: 1.7;
}

.contact-alt {
  text-align: center;
  margin-top: 48px;
  padding-top: 48px;
  border-top: 1px solid var(--color-border);
}

.contact-alt p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.contact-email {
  font-size: 1rem;
  color: var(--color-forest);
  font-weight: 500;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--color-forest);
  transition: opacity var(--transition);
}

.contact-email:hover {
  opacity: 0.7;
}

/* ---------- フッター ---------- */
.footer {
  background: var(--color-dark);
  padding: 56px 0 32px;
  text-align: center;
}

.footer-name {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-white);
  letter-spacing: 0.15em;
  margin-bottom: 8px;
}

.footer-tagline {
  font-size: 0.8125rem;
  color: rgba(245,240,232,0.4);
  letter-spacing: 0.12em;
  margin-bottom: 32px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: center;
  margin-bottom: 40px;
}

.footer-nav a {
  font-size: 0.8125rem;
  color: rgba(245,240,232,0.5);
  letter-spacing: 0.06em;
  transition: color var(--transition);
}

.footer-nav a:hover {
  color: rgba(245,240,232,0.9);
}

.footer-copy {
  font-size: 0.75rem;
  color: rgba(245,240,232,0.25);
  letter-spacing: 0.06em;
}

/* ---------- フェードイン ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ---------- レスポンシブ ---------- */
@media (max-width: 768px) {
  :root {
    --section-pad: 64px;
  }

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

  .nav-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 0;
    gap: 0;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
  }

  .nav-menu.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link {
    padding: 14px 24px;
    border-radius: 0;
  }

  .nav-link--cta {
    margin: 8px 24px;
    text-align: center;
  }

  /* トグル アニメーション */
  .nav-toggle.is-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .nav-toggle.is-open span:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle.is-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* プロフィール */
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-photo-placeholder {
    max-width: 240px;
    margin: 0 auto;
  }

  /* フッター */
  .footer-nav {
    gap: 16px;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 200px;
    text-align: center;
  }

  .works-grid {
    grid-template-columns: 1fr;
  }
}