/**
 * ファイル名: lp.css
 * 説明: ActionHub ランディングページ用スタイルシート
 *
 * このファイルには以下が含まれます:
 * - LPナビゲーション
 * - ヒーローセクション
 * - 機能紹介セクション
 * - ステップセクション
 * - CTAセクション
 * - フッター
 *
 * 依存: style.css（共通スタイル）
 * 注意: ダークテーマ非対応（ライトテーマ固定）
 */

/* ------------------------------------------------------------
   ベース
   ------------------------------------------------------------ */
.lp-body {
  background: #f8fafc;
  min-height: 100vh;
}

/* ------------------------------------------------------------
   ナビゲーション
   ------------------------------------------------------------ */
.lp-nav {
  background: white;
  border-bottom: 1px solid #e2e8f0;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 50;
}

.lp-nav-inner {
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4rem;
}

@media (min-width: 640px) {
  .lp-nav-inner {
    padding: 0 1.5rem;
  }
}

@media (min-width: 1024px) {
  .lp-nav-inner {
    padding: 0 2rem;
  }
}

.lp-nav-brand,
.lp-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: #3b82f6;
  text-decoration: none;
}

.lp-nav-brand i,
.lp-brand i {
  margin-right: 0.5rem;
}

.lp-nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* ヒーローセクション */
.lp-hero {
  background: linear-gradient(to bottom, white, #f8fafc);
  padding: 5rem 0;
}

.lp-hero-inner {
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 1rem;
  display: grid;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 640px) {
  .lp-hero-inner {
    padding: 0 1.5rem;
  }
}

@media (min-width: 768px) {
  .lp-hero-inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .lp-hero-inner {
    padding: 0 2rem;
  }
}

.lp-hero-grid {
  display: grid;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 768px) {
  .lp-hero-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.lp-hero-badge {
  display: inline-block;
  background: #eff6ff;
  color: #3b82f6;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1rem;
}

.lp-hero-badge i {
  margin-right: 0.5rem;
}

.lp-hero-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: #0f172a;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
  .lp-hero-title {
    font-size: 3rem;
  }
}

.lp-hero-content {
  max-width: 600px;
}

.lp-hero-text,
.lp-hero-desc {
  font-size: 1.25rem;
  color: #64748b;
  margin-bottom: 2rem;
  line-height: 1.6;
}

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

.lp-btn-primary {
  display: inline-flex;
  align-items: center;
  background: #3b82f6;
  color: white;
  padding: 1rem 2rem;
  border-radius: 0.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.15s;
}

.lp-btn-primary:hover {
  background: #2563eb;
}

.lp-btn-primary i {
  margin-right: 0.5rem;
}

.lp-btn-secondary {
  display: inline-flex;
  align-items: center;
  background: white;
  color: #475569;
  padding: 1rem 2rem;
  border: 1px solid #cbd5e1;
  border-radius: 0.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.15s;
}

.lp-btn-secondary:hover {
  background: #f8fafc;
}

/* ヒーローカード */
.lp-hero-card {
  background: white;
  border-radius: 0.75rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  padding: 2rem;
  border: 1px solid #e2e8f0;
}

.lp-hero-card-inner {
  background: linear-gradient(to bottom right, rgba(59, 130, 246, 0.1), rgba(34, 211, 238, 0.1));
  border-radius: 0.5rem;
  padding: 1.5rem;
}

/* ヒーロービジュアル・デモカード */
.lp-hero-visual {
  display: flex;
  justify-content: center;
}

.lp-demo-card {
  background: white;
  border-radius: 1rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
  padding: 1.5rem;
  width: 100%;
  max-width: 400px;
  border: 1px solid #e2e8f0;
}

.lp-demo-header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
}

.lp-demo-icon {
  width: 3rem;
  height: 3rem;
  background: linear-gradient(135deg, #3b82f6, #06b6d4);
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.lp-demo-info {
  flex: 1;
  min-width: 0;
}

.lp-demo-label {
  font-size: 0.75rem;
  color: #64748b;
  margin: 0 0 0.25rem 0;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.lp-demo-title {
  font-size: 1rem;
  font-weight: 600;
  color: #0f172a;
  margin: 0;
}

.lp-demo-body {
  background: #f8fafc;
  border-radius: 0.5rem;
  padding: 1rem;
}

.lp-demo-task-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.lp-demo-task-title {
  font-size: 0.875rem;
  font-weight: 500;
  color: #0f172a;
}

.lp-demo-status {
  font-size: 0.75rem;
  font-weight: 500;
  color: #3b82f6;
  background: #eff6ff;
  padding: 0.25rem 0.5rem;
  border-radius: 9999px;
}

.lp-demo-progress {
  height: 0.5rem;
  background: #e2e8f0;
  border-radius: 9999px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.lp-demo-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #3b82f6, #06b6d4);
  border-radius: 9999px;
}

.lp-demo-progress-text {
  font-size: 0.75rem;
  color: #64748b;
  margin: 0;
  text-align: right;
}

/* セクション */
.lp-section {
  padding: 5rem 0;
}

.lp-section-inner {
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 640px) {
  .lp-section-inner {
    padding: 0 1.5rem;
  }
}

@media (min-width: 1024px) {
  .lp-section-inner {
    padding: 0 2rem;
  }
}

.lp-section.bg-white,
.lp-section.white { background: white; }
.lp-section.bg-gray { background: #f8fafc; }
.lp-section.bg-gradient { background: linear-gradient(to right, rgba(59, 130, 246, 0.1), rgba(34, 211, 238, 0.1)); }

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

.lp-section-title {
  font-size: 2.25rem;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 1rem;
}

.lp-section-desc,
.lp-section-subtitle {
  font-size: 1.25rem;
  color: #64748b;
}

/* 機能カード */
.lp-feature-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .lp-feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.lp-feature-card {
  padding: 1.5rem;
  border: 1px solid #e2e8f0;
  border-radius: 0.75rem;
  background: white;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  transition: box-shadow 0.15s;
}

.lp-feature-card:hover {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.lp-feature-icon {
  width: 3rem;
  height: 3rem;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.lp-feature-icon.blue { background: rgba(59, 130, 246, 0.1); color: #3b82f6; }
.lp-feature-icon.cyan { background: rgba(34, 211, 238, 0.1); color: #06b6d4; }
.lp-feature-icon.purple { background: #f3e8ff; color: #9333ea; }
.lp-feature-icon.orange { background: #ffedd5; color: #f97316; }
.lp-feature-icon.green { background: #dcfce7; color: #10b981; }

.lp-feature-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: #0f172a;
  margin-bottom: 0.5rem;
}

.lp-feature-desc,
.lp-feature-text {
  color: #64748b;
}

/* ステップ */
.lp-steps,
.lp-step-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .lp-steps,
  .lp-step-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.lp-step,
.lp-step-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.lp-step-number {
  width: 4rem;
  height: 4rem;
  background: #3b82f6;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.lp-step-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: #0f172a;
  margin-bottom: 0.5rem;
}

.lp-step-desc,
.lp-step-text {
  color: #64748b;
}

/* CTA */
.lp-cta {
  background: linear-gradient(to right, rgba(59, 130, 246, 0.1), rgba(34, 211, 238, 0.1));
  padding: 5rem 1rem;
}

.lp-cta-inner {
  max-width: 56rem;
  margin: 0 auto;
  text-align: center;
}

.lp-cta-title {
  font-size: 2.25rem;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 1rem;
}

.lp-cta-desc,
.lp-cta-text {
  font-size: 1.25rem;
  color: #64748b;
  margin-bottom: 2rem;
}

.lp-cta-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* フッター */
.lp-footer {
  background: #0f172a;
  color: #cbd5e1;
  padding: 3rem 0;
}

.lp-footer-inner {
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 640px) {
  .lp-footer-inner {
    padding: 0 1.5rem;
  }
}

@media (min-width: 1024px) {
  .lp-footer-inner {
    padding: 0 2rem;
  }
}

.lp-footer-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .lp-footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.lp-footer-brand {
  margin-bottom: 1rem;
}

.lp-footer-brand i {
  margin-right: 0.5rem;
}

.lp-footer-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
  margin-bottom: 0.5rem;
}

.lp-footer-logo i {
  margin-right: 0.5rem;
}

.lp-footer-tagline {
  color: #94a3b8;
  font-size: 0.875rem;
  line-height: 1.5;
}

.lp-footer-desc {
  color: #94a3b8;
  margin-bottom: 1rem;
}

.lp-footer-heading {
  font-weight: 600;
  color: white;
  margin-bottom: 1rem;
}

.lp-footer-links ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.lp-footer-links li {
  margin-bottom: 0.5rem;
}

.lp-footer-links a {
  color: #94a3b8;
  text-decoration: none;
  transition: color 0.15s;
}

.lp-footer-links a:hover {
  color: white;
}

.lp-footer-bottom {
  border-top: 1px solid #334155;
  margin-top: 2rem;
  padding-top: 2rem;
  text-align: center;
  color: #94a3b8;
  font-size: 0.875rem;
}