/* ============================================
   studio F+D | feiz design
   共通スタイルシート
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;700;900&family=Noto+Sans+JP:wght@400;700;900&display=swap');

:root {
  --color-bg:        #FFFFFF;
  --color-bg-alt:    #F7F5F0;
  --color-bg-dark:   #1A1816;
  --color-text:      #1A1816;
  --color-text-muted:#6B6560;
  --color-accent:    #C8511B;
  --color-accent-lt: #F5EDE6;
  --color-border:    #E8E0D8;
  --font-sans: 'Inter', 'Noto Sans JP', sans-serif;
  --max-w: 900px;
  --radius: 4px;
  --transition: 0.2s ease;
}

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

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

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

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

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

section { padding: 80px 0; }
section:nth-child(even) { background: var(--color-bg-alt); }

/* ---- TYPOGRAPHY ---- */
.eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

h1, h2, h3 {
  font-family: var(--font-sans);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); margin-bottom: 40px; }
h3 { font-size: 1.125rem; margin-bottom: 8px; }

p { color: var(--color-text-muted); margin-bottom: 1em; }
p:last-child { margin-bottom: 0; }

/* ---- HEADER / NAV ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo {
  font-weight: 900;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  color: var(--color-text);
}
.logo span { color: var(--color-accent); }

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--color-accent); }

/* ---- BUTTONS ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 700;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}
.btn-primary:hover {
  background: #a84015;
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}
.btn-outline:hover {
  background: var(--color-accent);
  color: #fff;
}

/* ---- HERO ---- */
.hero {
  padding: 100px 0 80px;
  border-bottom: 1px solid var(--color-border);
}

.hero-badge {
  display: inline-block;
  background: var(--color-accent-lt);
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 24px;
}

.hero h1 {
  color: var(--color-text);
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 560px;
  margin-bottom: 40px;
}

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

/* ---- ABOUT / PHILOSOPHY ---- */
.philosophy-block {
  margin-bottom: 40px;
}

.tagline {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: 24px;
  padding-left: 20px;
  border-left: 5px solid var(--color-accent);
}

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

.service-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  transition: box-shadow var(--transition), border-color var(--transition);
}

.service-card:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
  border-color: var(--color-accent);
}

.service-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.service-card h3 { color: var(--color-text); }

/* ---- WORKS GRID ---- */
.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.work-card {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.work-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.08);
}

.work-thumb {
  aspect-ratio: 4/3;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

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

.work-info {
  padding: 16px;
}

.work-info h3 { font-size: 1rem; }
.work-info p { font-size: 0.875rem; margin: 0; }

/* ---- PRICE TABLE ---- */
.price-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 40px;
  font-size: 0.9rem;
}

.price-table th {
  background: var(--color-bg-dark);
  color: #fff;
  padding: 12px 16px;
  text-align: left;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

.price-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}

.price-table tr:hover td { background: var(--color-bg-alt); }

.price-accent {
  color: var(--color-accent);
  font-weight: 700;
  font-size: 1rem;
}

.price-note {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ---- SIMULATOR ---- */
.simulator {
  background: var(--color-bg-dark);
  border-radius: var(--radius);
  padding: 40px;
  color: #fff;
}

.simulator h3 {
  color: #fff;
  font-size: 1.25rem;
  margin-bottom: 24px;
}

.sim-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.sim-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.sim-select, .sim-input {
  width: 100%;
  padding: 10px 14px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  appearance: none;
  -webkit-appearance: none;
}

.sim-select option { background: #2a2a2a; color: #fff; }

.sim-result {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.15);
}

.sim-total-label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 4px;
}

.sim-total-price {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--color-accent);
  letter-spacing: -0.03em;
}

.sim-breakdown {
  margin-top: 12px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
}

.sim-note {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
  margin-top: 16px;
}

/* ---- CTA SECTION ---- */
.cta-section {
  background: var(--color-accent);
  padding: 80px 0;
  text-align: center;
}

.cta-section h2 { color: #fff; }
.cta-section p { color: rgba(255,255,255,0.8); max-width: 480px; margin: 0 auto 32px; }

.btn-cta {
  background: #fff;
  color: var(--color-accent);
  font-weight: 900;
  padding: 16px 36px;
  font-size: 1rem;
  border-radius: var(--radius);
  transition: all var(--transition);
}
.btn-cta:hover {
  background: var(--color-bg-alt);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

/* ---- CONTACT FORM ---- */
.form-group { margin-bottom: 20px; }

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--color-text);
}

.required { color: var(--color-accent); margin-left: 4px; }

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-accent);
}

textarea.form-control { resize: vertical; min-height: 140px; }

/* ---- FOOTER ---- */
.site-footer {
  background: var(--color-bg-dark);
  color: rgba(255,255,255,0.5);
  padding: 40px 0;
  font-size: 0.85rem;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-logo {
  font-weight: 900;
  color: #fff;
  font-size: 1rem;
}

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

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-links a { color: rgba(255,255,255,0.5); transition: color var(--transition); }
.footer-links a:hover { color: #fff; }

/* ---- DIVIDER ---- */
.divider {
  height: 1px;
  background: var(--color-border);
  margin: 40px 0;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 640px) {
  .nav-links { display: none; }
  .hero { padding: 60px 0 48px; }
  section { padding: 56px 0; }
  .sim-row { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
  .simulator { padding: 24px; }
}