/* Meeting Scribe LP — モダン・ダークテーマ */

:root {
  --bg: #08080c;
  --bg-elevated: #0e0e14;
  --surface: rgba(22, 22, 28, 0.6);
  --surface-solid: #16161e;
  --surface-hover: rgba(28, 28, 36, 0.8);
  --border: rgba(255, 255, 255, 0.06);
  --border-strong: rgba(255, 255, 255, 0.1);
  --text: #f2f2f7;
  --text-muted: #86868f;
  --accent: #00d4aa;
  --accent-dim: rgba(0, 212, 170, 0.12);
  --accent-hover: #00e6b8;
  --glow: rgba(0, 212, 170, 0.25);
  --font-display: "Outfit", sans-serif;
  --font-sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --radius: 14px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 60px var(--glow);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text);
  background:
    radial-gradient(ellipse 120% 100% at 50% 50%, transparent 35%, rgba(0, 0, 0, 0.18) 100%),
    radial-gradient(ellipse 100% 80% at 50% -20%, rgba(0, 212, 170, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse 80% 50% at 80% 50%, rgba(0, 212, 170, 0.03) 0%, transparent 45%),
    radial-gradient(ellipse 60% 40% at 20% 80%, rgba(0, 212, 170, 0.02) 0%, transparent 40%),
    linear-gradient(180deg, #0a0a0f 0%, #08080c 40%, #060608 100%);
  background-color: var(--bg);
  position: relative;
  min-height: 100vh;
}

/* 微細ノイズ（質感） */
.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ヒーロー背景グラデーションオーブ（メイン＋サブで奥行き） */
.hero-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse 90% 70% at 50% 10%,
      rgba(0, 212, 170, 0.14) 0%,
      rgba(0, 212, 170, 0.05) 35%,
      transparent 60%),
    radial-gradient(ellipse 70% 50% at 50% 5%,
      rgba(0, 212, 170, 0.08) 0%,
      transparent 45%);
}

/* ========== Top Navigation ========== */
.top-nav {
  position: relative;
  z-index: 10;
  display: flex;
  justify-content: flex-end;
  padding: var(--space-md) var(--space-lg);
}

.top-nav__github {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.top-nav__github:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--surface-hover);
}

.top-nav__icon {
  width: 1.125rem;
  height: 1.125rem;
}

/* ========== Hero ========== */
.hero {
  position: relative;
  z-index: 2;
  padding: var(--space-4xl) var(--space-lg);
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.hero__label {
  margin: 0 0 var(--space-md);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  opacity: 0.95;
}

.hero__title {
  margin: 0 0 var(--space-lg);
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 9vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.2;
  background: linear-gradient(160deg, #fff 0%, rgba(255, 255, 255, 0.75) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  margin: 0 0 var(--space-md);
  font-size: 1.0625rem;
  font-weight: 400;
  color: var(--text-muted);
  max-width: 42ch;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

.hero__tagline {
  margin: 0 0 var(--space-md);
  font-size: 1.125rem;
  font-weight: 400;
  color: var(--text-muted);
  max-width: 26ch;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.75;
}

.hero__badge {
  margin: 0 0 var(--space-2xl);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.02em;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 1rem 1.75rem;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--bg);
  background: var(--accent);
  border-radius: var(--radius);
  text-decoration: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.2s;
  box-shadow: 0 4px 20px rgba(0, 212, 170, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.hero__cta:hover {
  background: var(--accent-hover);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 212, 170, 0.35);
}

.hero__note {
  margin: var(--space-sm) 0 0;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ========== セクション共通・アニメーション ========== */
.section {
  position: relative;
  z-index: 0;
  padding: var(--space-4xl) var(--space-lg);
  max-width: 880px;
  margin: 0 auto;
}

.section__label {
  margin: 0 0 var(--space-sm);
  font-family: var(--font-display);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  opacity: 0.9;
}

.section__title {
  margin: 0 0 var(--space-xl);
  font-family: var(--font-display);
  font-size: clamp(1.375rem, 3vw, 1.75rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--text);
}

/* ========== 既存ツールとの違い ========== */
.difference__box {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.difference__item {
  padding: var(--space-xl);
  background: var(--surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 212, 170, 0.2);
  border-radius: var(--radius-lg);
  box-shadow: 0 0 0 1px rgba(0, 212, 170, 0.06);
}

.difference__item-title {
  margin: 0 0 var(--space-md);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--accent);
}

.difference__item-desc {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-muted);
}

.difference__item-desc strong {
  color: var(--text);
  font-weight: 600;
}

/* ========== Ollama 事前準備 ========== */
.ollama-notice__box {
  padding: var(--space-2xl) var(--space-xl);
  background: var(--surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 212, 170, 0.25);
  border-radius: var(--radius-lg);
  box-shadow: 0 0 0 1px rgba(0, 212, 170, 0.08);
}

.ollama-notice__text {
  margin: 0 0 var(--space-xl);
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-muted);
}

.ollama-notice__text strong {
  color: var(--accent);
  font-weight: 600;
}

.ollama-notice__cta {
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--bg);
  background: var(--accent);
  border-radius: var(--radius);
  text-decoration: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.2s;
  box-shadow: 0 4px 16px rgba(0, 212, 170, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.ollama-notice__cta:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0, 212, 170, 0.35);
}

/* ========== Demo ========== */
.demo__video-wrap {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow), 0 0 0 1px rgba(0, 0, 0, 0.2);
  background: var(--bg-elevated);
}

.demo__video {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: middle;
}

.demo__video-wrap:focus-within {
  box-shadow: var(--shadow-glow), 0 0 0 1px var(--accent);
}

/* フェードイン（表示時） */
.animate-in {
  animation: fadeInUp 0.7s ease-out backwards;
}

.section.animate-in {
  animation-delay: 0.1s;
}

.feature.card.animate-in {
  animation-delay: calc(0.2s + var(--i, 0) * 0.08s);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========== Features（ベントスタイル・ガラス） ========== */
.features__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .features__list {
    grid-template-columns: repeat(2, 1fr);
  }
}

.feature.card {
  padding: var(--space-xl) var(--space-xl);
  background: var(--surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color 0.25s, background 0.25s, transform 0.25s ease, box-shadow 0.25s;
}

.feature.card:hover {
  background: var(--surface-hover);
  border-color: rgba(0, 212, 170, 0.18);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -20px rgba(0, 0, 0, 0.5);
}

.feature__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  margin-bottom: var(--space-lg);
  font-size: 0.75rem;
  color: var(--accent);
  background: var(--accent-dim);
  border-radius: 12px;
  border: 1px solid rgba(0, 212, 170, 0.2);
}

.feature__title {
  margin: 0 0 var(--space-sm);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
}

.feature__desc {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.65;
}

/* ========== How-to ========== */
.how-to__steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-md);
}

.how-to__steps li {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-lg) var(--space-xl);
  background: var(--surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  transition: border-color 0.2s, background 0.2s;
}

.how-to__steps li:hover {
  background: var(--surface-hover);
  border-color: var(--border-strong);
}

.step-num {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-dim);
  border-radius: 50%;
  border: 1px solid rgba(0, 212, 170, 0.25);
}

/* ========== Flow（処理の流れ） ========== */
.flow__diagram {
  padding: var(--space-2xl);
  background: var(--surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow-x: auto;
}

.flow__diagram .mermaid {
  display: flex;
  justify-content: center;
  min-height: 200px;
}

.flow__diagram .mermaid svg {
  max-width: 100%;
  height: auto;
  filter: drop-shadow(0 0 20px rgba(0, 212, 170, 0.08));
}

/* ノード：角丸・アクセント枠・軽いグロー */
.flow__diagram .mermaid .node rect,
.flow__diagram .mermaid .node circle,
.flow__diagram .mermaid .node polygon,
.flow__diagram .mermaid .node path {
  fill: var(--surface-solid) !important;
  stroke: var(--accent) !important;
  stroke-width: 2 !important;
  rx: 12 !important;
  ry: 12 !important;
  transition: filter 0.2s ease, stroke 0.2s ease;
}

.flow__diagram .mermaid .node:hover rect,
.flow__diagram .mermaid .node:hover circle,
.flow__diagram .mermaid .node:hover polygon,
.flow__diagram .mermaid .node:hover path {
  filter: drop-shadow(0 0 12px rgba(0, 212, 170, 0.25));
  stroke: var(--accent-hover) !important;
}

/* ノード内テキスト */
.flow__diagram .mermaid .nodeLabel,
.flow__diagram .mermaid .node text,
.flow__diagram .mermaid span {
  color: var(--text) !important;
  font-family: var(--font-display), var(--font-sans) !important;
  font-weight: 500 !important;
  font-size: 0.9375rem !important;
}

/* 矢印・エッジ線 */
.flow__diagram .mermaid .edgePath path {
  stroke: rgba(0, 212, 170, 0.6) !important;
  stroke-width: 2 !important;
  fill: none !important;
}

.flow__diagram .mermaid .arrowheadPath {
  fill: rgba(0, 212, 170, 0.7) !important;
}

.flow__note {
  margin: var(--space-lg) 0 0;
  font-size: 0.9375rem;
  color: var(--text-muted);
  text-align: center;
}

/* ========== Requirements ========== */
.requirements__list {
  margin: 0;
  padding: var(--space-xl) var(--space-2xl);
  background: var(--surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  list-style: none;
  color: var(--text-muted);
}

.requirements__list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: var(--space-sm);
  font-size: 0.9375rem;
}

.requirements__list li:last-child {
  margin-bottom: 0;
}

.requirements__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-dim);
}

/* ========== CTA ========== */
.cta {
  text-align: center;
  padding: var(--space-4xl) var(--space-lg);
}

.cta__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--bg);
  background: var(--accent);
  border-radius: var(--radius);
  text-decoration: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.2s;
  box-shadow: 0 4px 20px rgba(0, 212, 170, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.cta__button:hover {
  background: var(--accent-hover);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 212, 170, 0.35);
}

.cta__note {
  margin: var(--space-sm) 0 0;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ========== Footer ========== */
.footer {
  position: relative;
  z-index: 0;
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  border-top: 1px solid var(--border);
  background: var(--bg-elevated);
}

.footer__copy {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}