/* ============================================
   AI開業ナビ - 共通スタイルシート
   飲食店のAI活用開業支援サイト
   ============================================ */

:root {
  --color-primary: #0d9488;      /* ティール */
  --color-primary-dark: #0f766e;
  --color-primary-light: #5eead4;
  --color-accent: #2563eb;       /* ブルー */
  --color-accent-light: #60a5fa;
  --color-ink: #0f172a;
  --color-ink-soft: #475569;
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-border: #e2e8f0;
  --gradient-hero: linear-gradient(135deg, #0d9488 0%, #2563eb 100%);
  --gradient-soft: linear-gradient(135deg, #f0fdfa 0%, #eff6ff 100%);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 48px rgba(15, 23, 42, 0.12);
  --max-width: 1120px;
  font-size: 16px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Hiragino Sans", "Noto Sans JP", "Yu Gothic", "Segoe UI", sans-serif;
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--color-primary-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

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

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--color-ink);
  letter-spacing: -0.02em;
}
.logo:hover { text-decoration: none; }

.logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--gradient-hero);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.95rem;
  font-weight: 900;
  flex-shrink: 0;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.main-nav a {
  color: var(--color-ink-soft);
  font-weight: 600;
  font-size: 0.94rem;
}
.main-nav a:hover { color: var(--color-primary-dark); text-decoration: none; }

.nav-cta {
  background: var(--color-ink);
  color: #fff !important;
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 0.88rem !important;
}
.nav-cta:hover { background: var(--color-primary-dark); text-decoration: none; }

.nav-toggle { display: none; }

/* ---------- Hero ---------- */
.hero {
  background: var(--gradient-soft);
  padding: 76px 0 88px;
  position: relative;
  overflow: hidden;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #fff;
  border: 1px solid var(--color-border);
  color: var(--color-primary-dark);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 22px;
  box-shadow: var(--shadow-sm);
}

.hero h1 {
  font-size: clamp(2rem, 4.2vw, 3.1rem);
  line-height: 1.35;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  max-width: 780px;
}

.hero .accent {
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.lead {
  font-size: 1.08rem;
  color: var(--color-ink-soft);
  max-width: 620px;
  margin: 0 0 34px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.96rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }

.btn-primary {
  background: var(--gradient-hero);
  color: #fff;
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: #fff;
  color: var(--color-ink);
  border-color: var(--color-border);
}
.btn-secondary:hover { border-color: var(--color-primary); }

/* ---------- Section basics ---------- */
section { padding: 80px 0; }
section.tight { padding: 56px 0; }

.section-head { max-width: 640px; margin: 0 0 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

.eyebrow {
  color: var(--color-primary-dark);
  font-weight: 800;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 10px;
  display: block;
}

.section-head h2 {
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
}

.section-head p { color: var(--color-ink-soft); margin: 0; font-size: 1.02rem; }

.alt-bg { background: #fff; border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }

/* ---------- Grid & cards ---------- */
.grid {
  display: grid;
  gap: 24px;
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }

.card-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--gradient-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--color-primary-dark);
}
.card-icon svg { width: 24px; height: 24px; }

.card h3 { margin: 0 0 8px; font-size: 1.08rem; font-weight: 700; }
.card p { margin: 0; color: var(--color-ink-soft); font-size: 0.94rem; }

.card .tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-accent);
  background: #eff6ff;
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}

/* ---------- Steps (timeline) ---------- */
.steps-list { display: flex; flex-direction: column; gap: 0; }

.step-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 24px;
  position: relative;
  padding-bottom: 48px;
}
.step-item:last-child { padding-bottom: 0; }

.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-hero);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  position: relative;
  z-index: 2;
}

.step-item:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 44px;
  bottom: -4px;
  width: 2px;
  background: var(--color-border);
}

.step-body {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
}

.step-body h3 { margin: 0 0 8px; font-size: 1.15rem; font-weight: 800; }
.step-body .step-period {
  display: inline-block;
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--color-ink-soft);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 2px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}
.step-body p { color: var(--color-ink-soft); margin: 0 0 14px; }

.ai-box {
  background: var(--gradient-soft);
  border: 1px solid #ccfbf1;
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.ai-box .ai-label {
  flex-shrink: 0;
  font-size: 0.72rem;
  font-weight: 800;
  color: #fff;
  background: var(--gradient-hero);
  padding: 4px 10px;
  border-radius: 6px;
  letter-spacing: 0.02em;
}
.ai-box p { margin: 0; font-size: 0.9rem; color: var(--color-ink); }

/* ---------- CTA band ---------- */
.cta-band {
  background: var(--gradient-hero);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  text-align: center;
  color: #fff;
  margin: 0 24px;
}
.cta-band h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 800; margin: 0 0 12px; }
.cta-band p { opacity: 0.92; margin: 0 0 28px; font-size: 1.02rem; }
.cta-band .btn-secondary { background: #fff; color: var(--color-primary-dark); border-color: transparent; }

/* ---------- Table ---------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius-md); border: 1px solid var(--color-border); }
table { width: 100%; border-collapse: collapse; background: #fff; font-size: 0.92rem; }
th, td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--color-border); }
th { background: var(--color-bg); font-weight: 700; color: var(--color-ink-soft); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.03em; }
tr:last-child td { border-bottom: none; }

/* ---------- Tool cards ---------- */
.tool-card { display: flex; flex-direction: column; height: 100%; }
.tool-card .tool-top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 12px; }
.tool-card .price { font-size: 0.76rem; font-weight: 700; color: var(--color-primary-dark); background: #f0fdfa; padding: 3px 10px; border-radius: 999px; }
.tool-card ul { margin: 14px 0 0; padding-left: 18px; font-size: 0.88rem; color: var(--color-ink-soft); }
.tool-card ul li { margin-bottom: 4px; }

/* ---------- Filter tabs ---------- */
.filter-tabs { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 36px; }
.filter-tabs button {
  border: 1px solid var(--color-border);
  background: #fff;
  padding: 9px 18px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.86rem;
  cursor: pointer;
  color: var(--color-ink-soft);
  transition: all 0.15s ease;
}
.filter-tabs button:hover { border-color: var(--color-primary); color: var(--color-primary-dark); }
.filter-tabs button.active { background: var(--color-ink); color: #fff; border-color: var(--color-ink); }

/* ---------- Form ---------- */
.form-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
  max-width: 640px;
  margin: 0 auto;
}
.field { margin-bottom: 22px; }
.field label { display: block; font-weight: 700; font-size: 0.9rem; margin-bottom: 8px; }
.field .req { color: #dc2626; font-size: 0.78rem; margin-left: 4px; }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--color-bg);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background: #fff;
}
.field textarea { resize: vertical; min-height: 130px; }
.form-note { font-size: 0.82rem; color: var(--color-ink-soft); margin-top: -8px; margin-bottom: 22px; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-ink);
  color: #cbd5e1;
  padding: 56px 0 28px;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}
.footer-brand .logo { color: #fff; margin-bottom: 12px; }
.footer-brand p { font-size: 0.86rem; color: #94a3b8; max-width: 280px; }
.footer-col h4 { color: #fff; font-size: 0.86rem; margin: 0 0 14px; font-weight: 700; }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col a { color: #94a3b8; font-size: 0.88rem; }
.footer-col a:hover { color: #fff; text-decoration: none; }
.footer-bottom {
  border-top: 1px solid #1e293b;
  padding-top: 24px;
  font-size: 0.8rem;
  color: #64748b;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- Page header (inner pages) ---------- */
.page-header {
  background: var(--gradient-soft);
  padding: 52px 0 44px;
  border-bottom: 1px solid var(--color-border);
}
.breadcrumb { font-size: 0.82rem; color: var(--color-ink-soft); margin-bottom: 16px; }
.breadcrumb a { color: var(--color-ink-soft); }
.page-header h1 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); font-weight: 800; margin: 0 0 12px; letter-spacing: -0.02em; }
.page-header p.lead { color: var(--color-ink-soft); max-width: 620px; margin: 0; font-size: 1rem; }

/* ---------- Disclaimer box ---------- */
.disclaimer {
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  font-size: 0.86rem;
  color: #92400e;
  margin: 32px 0;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .main-nav { position: fixed; top: 68px; left: 0; right: 0; background: #fff; flex-direction: column; align-items: flex-start; padding: 20px 24px 28px; border-bottom: 1px solid var(--color-border); box-shadow: var(--shadow-md); display: none; gap: 16px; }
  .main-nav.open { display: flex; }
  .nav-toggle { display: block; background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--color-ink); }
  .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
  .step-item { grid-template-columns: 40px 1fr; gap: 16px; }
  .step-num { width: 36px; height: 36px; font-size: 0.88rem; }
  .step-item:not(:last-child)::before { left: 17px; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-band { margin: 0; border-radius: 0; padding: 48px 24px; }
  .form-card { padding: 28px 22px; }
  section { padding: 56px 0; }
}