/* 施工写真振り分け管理ツール 紹介ページ — scoped styles */
#sfi-app {
  --sfi-bg: #FFF8EE;
  --sfi-bg-grad: linear-gradient(180deg, #FFF8EE 0%, #FFEFD6 100%);
  --sfi-panel: #FFFFFF;
  --sfi-panel-soft: #FFFBF4;
  --sfi-border: #F0E0C8;
  --sfi-border-strong: #E8CFA8;
  --sfi-text: #3D2817;
  --sfi-muted: #8B7765;
  --sfi-accent: #FF7A45;
  --sfi-accent-2: #FF9966;
  --sfi-accent-hover: #E85D2C;
  --sfi-accent-soft: #FFF0E6;
  --sfi-success: #4FB286;
  --sfi-shadow: 0 2px 6px rgba(180,120,60,.10);
  --sfi-shadow-lift: 0 8px 28px rgba(180,120,60,.18);
  --sfi-shadow-deep: 0 14px 40px rgba(180,120,60,.22);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Maru Gothic ProN", "Hiragino Sans", "Yu Gothic UI", "Meiryo", sans-serif;
  color: var(--sfi-text);
  line-height: 1.7;
  font-size: 15px;
  background: var(--sfi-bg);
  background-image: var(--sfi-bg-grad);
  border-radius: 16px;
  margin: 20px 0;
  overflow: hidden;
}
#sfi-app *, #sfi-app *::before, #sfi-app *::after { box-sizing: border-box; }
#sfi-app img { max-width: 100%; display: block; }
#sfi-app a { color: var(--sfi-accent); text-decoration: none; transition: color .15s; }
#sfi-app a:hover { color: var(--sfi-accent-hover); }
#sfi-app .sfi-container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* === Hero === */
#sfi-app .sfi-hero {
  position: relative;
  padding: 60px 0 80px;
  text-align: center;
  background: linear-gradient(135deg, #FFFAF0 0%, #FFEFD6 50%, #FFE0BB 100%);
  overflow: hidden;
}
#sfi-app .sfi-hero::before {
  content: "📸";
  position: absolute;
  top: -40px;
  right: -40px;
  font-size: 320px;
  opacity: .06;
  transform: rotate(-15deg);
  pointer-events: none;
}
#sfi-app .sfi-hero h1 {
  font-size: 42px;
  font-weight: 900;
  margin: 0 0 16px;
  line-height: 1.3;
  background: linear-gradient(135deg, var(--sfi-accent) 0%, var(--sfi-accent-hover) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -.5px;
}
#sfi-app .sfi-hero h1 .sfi-accent {
  display: block;
  font-size: 22px;
  color: var(--sfi-text);
  -webkit-text-fill-color: var(--sfi-text);
  margin-top: 10px;
  font-weight: 700;
}
#sfi-app .sfi-hero p.sfi-lead {
  font-size: 17px;
  color: var(--sfi-text);
  max-width: 720px;
  margin: 0 auto 36px;
  font-weight: 500;
}
#sfi-app .sfi-cta-row {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
#sfi-app .sfi-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  font-family: inherit;
  text-decoration: none;
  transition: all .25s;
  box-shadow: 0 4px 14px rgba(255,122,69,.3);
}
#sfi-app .sfi-btn-primary {
  background: linear-gradient(135deg, var(--sfi-accent) 0%, var(--sfi-accent-2) 100%);
  color: #fff;
}
#sfi-app .sfi-btn-primary:hover {
  background: linear-gradient(135deg, var(--sfi-accent-hover) 0%, var(--sfi-accent) 100%);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(255,122,69,.4);
}
#sfi-app .sfi-btn-secondary {
  background: var(--sfi-panel);
  color: var(--sfi-accent);
  border: 2px solid var(--sfi-accent);
  box-shadow: none;
}
#sfi-app .sfi-btn-secondary:hover {
  background: var(--sfi-accent-soft);
  color: var(--sfi-accent);
  transform: translateY(-3px);
}

/* === Sections === */
#sfi-app .sfi-section { padding: 64px 0; }
#sfi-app .sfi-section-head { text-align: center; margin-bottom: 40px; }
#sfi-app .sfi-tag {
  display: inline-block;
  background: var(--sfi-accent-soft);
  color: var(--sfi-accent);
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: 1px;
}
#sfi-app .sfi-section-title {
  font-size: 30px;
  font-weight: 800;
  margin: 0 0 12px;
  line-height: 1.3;
}
#sfi-app .sfi-section-sub {
  color: var(--sfi-muted);
  font-size: 15px;
  max-width: 600px;
  margin: 0 auto;
}

/* === Features Grid === */
#sfi-app .sfi-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
#sfi-app .sfi-feature {
  background: var(--sfi-panel);
  padding: 28px 24px;
  border-radius: 18px;
  border: 1px solid var(--sfi-border);
  box-shadow: var(--sfi-shadow);
  transition: all .25s;
  position: relative;
  overflow: hidden;
}
#sfi-app .sfi-feature::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--sfi-accent) 0%, var(--sfi-accent-2) 100%);
  opacity: 0;
  transition: opacity .25s;
}
#sfi-app .sfi-feature:hover {
  transform: translateY(-6px);
  box-shadow: var(--sfi-shadow-lift);
  border-color: var(--sfi-accent-2);
}
#sfi-app .sfi-feature:hover::before { opacity: 1; }
#sfi-app .sfi-feature-icon {
  font-size: 42px;
  margin-bottom: 14px;
  display: inline-block;
  filter: drop-shadow(0 4px 8px rgba(255,122,69,.2));
}
#sfi-app .sfi-feature h3 {
  font-size: 18px;
  margin: 0 0 8px;
  color: var(--sfi-text);
}
#sfi-app .sfi-feature p {
  color: var(--sfi-muted);
  font-size: 13px;
  line-height: 1.7;
  margin: 0;
}

/* === Steps === */
#sfi-app .sfi-steps {
  background: var(--sfi-panel);
  padding: 64px 0;
}
#sfi-app .sfi-steps-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
  margin-top: 40px;
  position: relative;
}
#sfi-app .sfi-steps-grid::before {
  content: "";
  position: absolute;
  top: 32px;
  left: 10%;
  right: 10%;
  height: 3px;
  background: repeating-linear-gradient(90deg, var(--sfi-accent-soft) 0 8px, transparent 8px 16px);
  z-index: 0;
}
#sfi-app .sfi-step {
  text-align: center;
  position: relative;
  z-index: 1;
}
#sfi-app .sfi-step-num {
  width: 56px;
  height: 56px;
  margin: 0 auto 12px;
  background: linear-gradient(135deg, var(--sfi-accent) 0%, var(--sfi-accent-2) 100%);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  box-shadow: 0 6px 16px rgba(255,122,69,.35);
  border: 4px solid var(--sfi-panel);
}
#sfi-app .sfi-step h4 { font-size: 15px; margin: 0 0 6px; }
#sfi-app .sfi-step p { font-size: 12px; color: var(--sfi-muted); line-height: 1.6; margin: 0; }

/* === Tech Specs === */
#sfi-app .sfi-tech {
  background: linear-gradient(180deg, var(--sfi-panel-soft) 0%, var(--sfi-bg) 100%);
  padding: 64px 0;
}
#sfi-app .sfi-spec-card {
  background: var(--sfi-panel);
  border-radius: 18px;
  padding: 28px;
  box-shadow: var(--sfi-shadow-lift);
  border: 1px solid var(--sfi-border);
  max-width: 800px;
  margin: 0 auto;
  overflow-x: auto;
}
#sfi-app .sfi-spec-table { width: 100%; border-collapse: collapse; min-width: 500px; }
#sfi-app .sfi-spec-table th, #sfi-app .sfi-spec-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--sfi-border);
  font-size: 14px;
}
#sfi-app .sfi-spec-table th {
  font-weight: 700;
  color: var(--sfi-text);
  background: var(--sfi-panel-soft);
  width: 30%;
}
#sfi-app .sfi-spec-table td { color: var(--sfi-muted); }

/* === Final CTA === */
#sfi-app .sfi-final {
  background: linear-gradient(135deg, var(--sfi-accent) 0%, var(--sfi-accent-2) 100%);
  color: #fff;
  text-align: center;
  border-radius: 24px;
  padding: 56px 32px;
  margin: 0 20px 60px;
  max-width: 1060px;
  margin-left: auto;
  margin-right: auto;
  box-shadow: var(--sfi-shadow-deep);
  position: relative;
  overflow: hidden;
}
#sfi-app .sfi-final h2 { font-size: 30px; margin: 0 0 12px; position: relative; }
#sfi-app .sfi-final p { opacity: .95; margin: 0 0 24px; font-size: 15px; position: relative; }
#sfi-app .sfi-final .sfi-btn {
  background: #fff;
  color: var(--sfi-accent);
}
#sfi-app .sfi-final .sfi-btn:hover {
  background: var(--sfi-panel-soft);
  color: var(--sfi-accent-hover);
  transform: translateY(-3px) scale(1.03);
}

/* === Footer === */
#sfi-app .sfi-footer {
  text-align: center;
  padding: 24px 20px 40px;
  color: var(--sfi-muted);
  font-size: 13px;
}
#sfi-app .sfi-footer a { color: var(--sfi-muted); margin: 0 8px; }
#sfi-app .sfi-footer a:hover { color: var(--sfi-accent); }

/* === Responsive === */
@media (max-width: 900px) {
  #sfi-app .sfi-hero h1 { font-size: 30px; }
  #sfi-app .sfi-hero h1 .sfi-accent { font-size: 18px; }
  #sfi-app .sfi-hero p.sfi-lead { font-size: 15px; }
  #sfi-app .sfi-features { grid-template-columns: repeat(2, 1fr); }
  #sfi-app .sfi-steps-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  #sfi-app .sfi-steps-grid::before { display: none; }
  #sfi-app .sfi-section-title { font-size: 24px; }
  #sfi-app .sfi-final h2 { font-size: 22px; }
}
@media (max-width: 600px) {
  #sfi-app { margin: 12px 0; border-radius: 12px; }
  #sfi-app .sfi-hero { padding: 48px 0 56px; }
  #sfi-app .sfi-hero h1 { font-size: 22px; }
  #sfi-app .sfi-hero h1 .sfi-accent { font-size: 15px; }
  #sfi-app .sfi-section { padding: 44px 0; }
  #sfi-app .sfi-features { grid-template-columns: 1fr; }
  #sfi-app .sfi-steps-grid { grid-template-columns: 1fr; }
  #sfi-app .sfi-spec-table th, #sfi-app .sfi-spec-table td { font-size: 12px; padding: 10px 8px; }
  #sfi-app .sfi-final { padding: 36px 16px; margin: 0 12px 40px; }
  #sfi-app .sfi-final h2 { font-size: 20px; }
  #sfi-app .sfi-btn { padding: 12px 22px; font-size: 14px; width: 100%; justify-content: center; }
}