/* ==============================================================================
   MAIS SDK - Clean B2B Engineering Design (PRISM Style)
   白基調・引き算の美学・洗練された信頼感
   ============================================================================== */

:root {
  --bg: #ffffff;
  --bg-gray: #f8fafc;
  --bg-panel: #ffffff;
  --border: #e2e8f0;
  --border-light: #edf2f7;
  --border-dark: #cbd5e1;
  
  --text-main: #0f172a;
  --text-body: #334155;
  --text-muted: #64748b;
  --primary: #059669;
  --primary-hover: #047857;
  --primary-soft: #ecfdf5;
  --primary-border: #a7f3d0;
  
  --success: #059669;
  --danger: #dc2626;
  
  --font-sans: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', Consolas, Menlo, monospace;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--text-body);
  line-height: 1.7;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ================== ヘッダー ================== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: 70px;
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-main);
  transition: opacity 0.15s;
}

.logo:hover {
  opacity: 0.85;
}

.logo-icon-svg {
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.logo-text {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #0f172a;
  display: flex;
  align-items: center;
}

.logo-badge {
  font-size: 10.5px;
  font-weight: 700;
  background: #f1f5f9;
  color: #475569;
  border: 1px solid #cbd5e1;
  padding: 1px 7px;
  border-radius: 4px;
  margin-left: 6px;
  letter-spacing: 0.05em;
  font-family: var(--font-mono);
}

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

.nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.15s;
}

.nav a:hover {
  color: var(--text-main);
}

/* ================== ボタン ================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 6px;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s ease;
  border: 1px solid transparent;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-primary-sm {
  background: var(--primary);
  color: #ffffff !important;
  padding: 8px 16px;
  font-size: 13px;
  border-radius: 4px;
}

.btn-primary-sm:hover {
  background: var(--primary-hover);
}

.btn-outline {
  background: #ffffff;
  color: var(--text-main);
  border: 1px solid var(--border-dark);
}

.btn-outline:hover {
  background: var(--bg-gray);
  border-color: var(--text-main);
}

.btn-card-outline {
  width: 100%;
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-dark);
  padding: 10px;
}

.btn-card-outline:hover {
  background: var(--bg-gray);
}

.btn-block {
  width: 100%;
}

.btn-submit {
  width: 100%;
  padding: 14px;
  font-size: 15px;
  margin-top: 10px;
}

/* ================== ヒーロー (引き算の美学・端正な1カラム) ================== */
.hero {
  padding: 100px 0 90px;
  background: #ffffff;
}

.hero-container {
  max-width: 860px;
}

.hero-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-soft);
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 24px;
  border: 1px solid var(--primary-border);
}

.hero-title {
  font-size: 52px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-main);
  margin-bottom: 24px;
  letter-spacing: -0.03em;
}

.hero-lead {
  font-size: 18px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 36px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  margin-bottom: 60px;
}

.hero-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

.metric-block {
  display: flex;
  flex-direction: column;
  min-width: 180px;
  flex: 1;
}

.metric-val {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 4px;
}

.metric-label {
  font-size: 13px;
  color: var(--text-muted);
}

/* ================== 組み込みUIコンソール 自動デモ (シミュレータ直上) ================== */
.demo-window-center-wrap {
  max-width: 840px;
  margin: 0 auto 20px;
}

.hero-demo-window {
  background: #ffffff;
  border: 1px solid var(--border-dark);
  border-radius: 12px;
  box-shadow: 0 20px 40px -15px rgba(15, 23, 42, 0.12), 0 0 0 1px rgba(0, 0, 0, 0.04);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.demo-window-header {
  background: #0f172a;
  color: #f8fafc;
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #1e293b;
}

.demo-window-dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.demo-window-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
}

.demo-badge-hmi {
  font-size: 10px;
  background: rgba(255, 255, 255, 0.12);
  color: #94a3b8;
  padding: 2px 6px;
  border-radius: 3px;
}

.demo-live-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 700;
  color: #10b981;
  letter-spacing: 0.05em;
}

.live-pulse {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse-green 1.8s infinite;
}

@keyframes pulse-green {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 6px rgba(16, 185, 129, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }
}

.demo-chat-body {
  height: 310px;
  padding: 16px 20px;
  background: #f8fafc;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.demo-bubble {
  max-width: 90%;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.55;
  animation: fadeIn 0.25s ease-out;
}

.demo-bubble.user {
  align-self: flex-end;
  background: #0f172a;
  color: #ffffff;
  border-bottom-right-radius: 2px;
}

.demo-bubble.ai {
  align-self: flex-start;
  background: #ffffff;
  color: #0f172a;
  border: 1px solid var(--border);
  border-bottom-left-radius: 2px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
}

.demo-bubble.ai-alarm {
  border-left: 3px solid #dc2626;
}

.demo-bubble.ai-state {
  border-left: 3px solid var(--primary);
}

.demo-bubble.ai-manual {
  border-left: 3px solid #6366f1;
}

.demo-ai-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
  font-size: 11px;
  font-weight: 700;
}

.demo-ai-speed {
  color: var(--primary);
  font-family: var(--font-mono);
  background: var(--primary-soft);
  padding: 1px 6px;
  border-radius: 3px;
}

.demo-input-bar {
  display: flex;
  align-items: center;
  padding: 10px 14px;
  background: #ffffff;
  border-top: 1px solid var(--border);
  gap: 8px;
}

.demo-input-icon {
  font-size: 15px;
}

.demo-typing-text {
  flex: 1;
  font-size: 13px;
  color: #0f172a;
  font-family: var(--font-sans);
  min-height: 20px;
  white-space: nowrap;
  overflow: hidden;
}

.demo-cursor {
  display: inline-block;
  width: 2px;
  height: 16px;
  background: var(--primary);
  margin-left: 2px;
  animation: blink 0.9s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.demo-send-mock {
  background: var(--primary);
  color: #ffffff;
  border: none;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 4px;
  cursor: pointer;
}

.demo-footer-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 16px;
  background: #f1f5f9;
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: #64748b;
}

.demo-ctrl-btn {
  background: transparent;
  border: 1px solid #cbd5e1;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  color: #475569;
  cursor: pointer;
  transition: all 0.15s;
}

.demo-ctrl-btn:hover {
  background: #ffffff;
  color: #0f172a;
}

/* ================== 組み込み簡単3ステップ ================== */
.steps-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 960px;
  margin: 0 auto 36px;
}

.step-card {
  flex: 1;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px 18px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
  transition: transform 0.15s, border-color 0.15s;
}

.step-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
}

.step-num {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-soft);
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 10px;
}

.step-card h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.step-card p {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.6;
}

.step-card code {
  font-family: var(--font-mono);
  background: #f1f5f9;
  padding: 2px 5px;
  border-radius: 3px;
  font-size: 11.5px;
  color: #0f172a;
}

.step-arrow {
  color: #94a3b8;
  font-size: 18px;
  font-weight: bold;
}

@media (max-width: 768px) {
  .steps-container {
    flex-direction: column;
    gap: 12px;
  }
  .step-arrow {
    transform: rotate(90deg);
  }
}

@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-content {
    max-width: 100%;
  }
}

.metric-label {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ================== セクション共通 ================== */
.section {
  padding: 100px 0;
}

.section-gray {
  background: var(--bg-gray);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-title-wrap {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 50px;
}

.section-sub {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-desc {
  font-size: 15px;
  color: var(--text-muted);
}

/* ================== シミュレータ ================== */
.simulator-wrapper {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
  overflow: hidden;
}

.sim-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  background: var(--bg-gray);
  border-bottom: 1px solid var(--border);
}

.sim-selector-group {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.sim-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
}

.sim-tabs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.sim-tab {
  background: #ffffff;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s;
}

.sim-tab:hover {
  color: var(--text-main);
  border-color: var(--border-dark);
}

.sim-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
  font-weight: 600;
}

.sim-body {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  min-height: 480px;
}

.sim-panel {
  display: flex;
  flex-direction: column;
  height: 520px;
  background: #ffffff;
  overflow: hidden;
}

.sim-panel:first-child {
  border-right: 1px solid var(--border);
}

.panel-header {
  padding: 12px 16px;
  background: #fafafa;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-shrink: 0;
}

.panel-file {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.panel-tag {
  font-size: 11px;
  color: var(--text-muted);
  background: #ffffff;
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 3px;
  white-space: nowrap;
}

.panel-status {
  font-size: 12px;
  color: var(--success);
  font-weight: 600;
  white-space: nowrap;
}

.code-box {
  padding: 18px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.65;
  color: #1e293b;
  background: #fdfdfd;
  flex: 1;
  overflow: auto;
  white-space: pre;
}

.chat-area {
  flex: 1;
  padding: 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: #ffffff;
}

.chat-bubble {
  padding: 12px 14px;
  border-radius: 6px;
  font-size: 13.5px;
  line-height: 1.6;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.chat-bubble.sys {
  background: var(--bg-gray);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.chat-bubble.user {
  background: var(--primary-soft);
  border: 1px solid #bfdbfe;
  color: var(--text-main);
  align-self: flex-end;
  max-width: 90%;
}

.chat-bubble.ai {
  background: #ffffff;
  border: 1px solid var(--border-dark);
  align-self: flex-start;
  max-width: 98%;
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}

.ai-meta {
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border);
  gap: 8px;
}

.preset-bar {
  padding: 10px 14px;
  background: #fafafa;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 8px;
  overflow-x: auto;
  flex-shrink: 0;
  -webkit-overflow-scrolling: touch;
}

.preset-btn {
  white-space: nowrap;
  padding: 6px 12px;
  background: #ffffff;
  color: var(--text-body);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
  flex-shrink: 0;
  transition: all 0.15s;
}

.preset-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.input-bar {
  display: flex;
  padding: 12px 14px;
  background: #ffffff;
  border-top: 1px solid var(--border);
  gap: 8px;
  flex-shrink: 0;
}

.input-bar input {
  flex: 1;
  padding: 9px 12px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-main);
  font-size: 13.5px;
}

.input-bar input:focus {
  outline: none;
  border-color: var(--primary);
}

.btn-send {
  padding: 0 20px;
  background: var(--text-main);
  color: #ffffff;
  font-weight: 600;
  font-size: 13px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s;
}

.btn-send:hover {
  background: var(--primary);
}

/* ================== 特長グリッド ================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-item {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 36px 28px;
  transition: box-shadow 0.2s;
}

.feature-item:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
}

.feature-index {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  display: block;
  margin-bottom: 16px;
}

.feature-item h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}

.feature-item p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ================== 動作環境テーブル ================== */
.spec-table-wrap {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  text-align: left;
}

.spec-table th {
  background: #fafafa;
  color: var(--text-main);
  font-weight: 700;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 13.5px;
}

.spec-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-body);
  line-height: 1.6;
}

.spec-table tr:last-child td {
  border-bottom: none;
}

.spec-table td:first-child {
  width: 22%;
  color: var(--text-main);
  background: #fdfdfd;
}

.spec-table td:nth-child(2) {
  width: 39%;
}

.spec-table td:nth-child(3) {
  width: 39%;
  background: rgba(239, 246, 255, 0.3);
}

/* ================== 料金プラン ================== */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  max-width: 860px;
  margin: 0 auto;
}

.pricing-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
}

.pricing-card.highlight {
  border-color: var(--primary);
  box-shadow: 0 4px 20px rgba(0, 102, 255, 0.08);
}

.pricing-badge {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: inline-block;
}

.pricing-badge.active {
  color: var(--primary);
}

.pricing-card h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.pricing-price {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 14px;
}

.pricing-desc {
  font-size: 13.5px;
  color: var(--text-muted);
  margin-bottom: 24px;
  line-height: 1.6;
}

.pricing-list {
  list-style: none;
  font-size: 13.5px;
  color: var(--text-body);
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
  flex: 1;
}

.pricing-list li::before {
  content: "✓ ";
  color: var(--primary);
  font-weight: bold;
}

/* ================== フォーム ================== */
.form-wrapper {
  max-width: 680px;
}

.contact-form {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 40px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
}

.form-group input {
  padding: 10px 14px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 14px;
  color: var(--text-main);
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
}

/* ================== フッター ================== */
.footer {
  border-top: 1px solid var(--border);
  background: var(--bg-gray);
  padding: 40px 0;
  font-size: 13px;
  color: var(--text-muted);
}

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

.footer-left strong {
  font-size: 15px;
  color: var(--text-main);
  display: block;
  margin-bottom: 4px;
}

.footer-right {
  text-align: right;
}

.footer-legal {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 2px;
}

@media (max-width: 860px) {
  .hero-title { font-size: 38px; }
  .sim-body, .features-grid, .pricing-grid, .form-row { grid-template-columns: 1fr; }
  .sim-panel:first-child { border-right: none; border-bottom: 1px solid var(--border); }
  .hero-metrics { flex-direction: column; gap: 20px; }
  .footer-inner { flex-direction: column; gap: 16px; text-align: center; }
  .footer-right { text-align: center; }
}