/* =============================================
   cocoro-drai.css — Styles for ココロDrAI page
   ============================================= */

/* ─── Variable Overrides (Cocoro uses slightly different palette) ─── */
:root {
  /* ココロDrAI base palette adjustments */
  --navy: #4A6275;
  --navy-deep: #3A5060;
  --navy-light: #6B8BA0;
  --gold: #B0A0C8;
  --gold-soft: #D5CCE4;
  --coral: #84BFA8;
  --coral-soft: #ACC8BA;
  --accent: #B0A0C8;
  --accent-light: #EDE4F5;
  --off-white: #FAFCFB;
  --warm-gray: #F2F6F4;
  --text-primary: #3A4F5E;
  --text-secondary: #7A8F9E;
  --text-light: #A0B0BC;
}

/* ─── Dark Mode Variable Overrides (Cocoro) ─── */
@media (prefers-color-scheme: dark) {
  :root {
    --navy: #8AACC8;
    --navy-deep: #A0C4E0;
    --navy-light: #6B96B8;
    --gold: #D5CCE4;
    --gold-soft: #4A4058;
    --coral: #7DD4A8;
    --coral-soft: #5A9A7E;
    --accent: #D0C0E8;
    --accent-light: #2E2640;
    --white: #1A2030;
    --off-white: #151C28;
    --warm-gray: #1E2535;
    --text-primary: #D8E4EC;
    --text-secondary: #9AB0C0;
    --text-light: #6A8090;
  }
}

/* ─── Cocoro Navigation (always visible, not scroll-dependent) ─── */
nav {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 1rem 0;
  box-shadow: 0 1px 20px rgba(39, 61, 82, 0.06);
}

.nav-logo img {
  height: 34px;
}

/* Cocoro CTA uses coral instead of navy */
.nav-cta {
  background: var(--coral);
}

.nav-cta:hover {
  background: var(--coral-soft);
}

/* ─── Cocoro Section Title (slightly smaller) ─── */
.section-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
}

.section-title .jp {
  font-size: clamp(1.1rem, 2.2vw, 1.4rem);
}

/* ─── Hero ─── */
.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  background: linear-gradient(160deg, #FFFFFF 0%, var(--off-white) 50%, var(--warm-gray) 100%);
  position: relative;
  overflow: hidden;
  padding-top: 5rem;
}

.hero::before {
  content: '';
  position: absolute;
  top: -10%;
  right: -5%;
  width: 50vw;
  height: 50vw;
  max-width: 700px;
  max-height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(155, 127, 184, 0.1) 0%, transparent 60%);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-text {
  position: relative;
  z-index: 2;
  color: var(--text-primary);
}

.hero-badge {
  display: inline-block;
  background: rgba(155, 127, 184, 0.15);
  color: var(--accent);
  padding: 0.4rem 1rem;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  border: 1px solid rgba(155, 127, 184, 0.3);
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 900;
  line-height: 1.4;
  margin-bottom: 1.5rem;
}

.hero h1 .highlight {
  color: var(--accent);
}

.hero-desc {
  font-size: 1.05rem;
  font-weight: 300;
  line-height: 2;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.hero-stat {
  text-align: center;
  padding: 1rem 1.5rem;
  background: var(--white);
  border-radius: 12px;
  border: 1px solid rgba(39, 61, 82, 0.08);
  box-shadow: 0 2px 8px rgba(39, 61, 82, 0.04);
}

.hero-stat-value {
  font-family: 'DM Sans', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
}

.hero-stat-label {
  font-size: 0.75rem;
  color: var(--text-light);
  margin-top: 0.3rem;
}

/* Hero fadeUp animations — only when JS is loaded */
.js-loaded .hero-badge {
  opacity: 0;
  animation: fadeUp 0.8s 0.3s ease forwards;
}
.js-loaded .hero h1 {
  opacity: 0;
  animation: fadeUp 0.8s 0.5s ease forwards;
}
.js-loaded .hero-desc {
  opacity: 0;
  animation: fadeUp 0.8s 0.7s ease forwards;
}
.js-loaded .hero-stats {
  opacity: 0;
  animation: fadeUp 0.8s 0.9s ease forwards;
}
.js-loaded .hero-visual {
  opacity: 0;
  animation: fadeUp 0.8s 0.7s ease forwards;
}

/* Hero visual — chat mockup */
.hero-visual {
  position: relative;
  z-index: 2;
}

.hero-mockup {
  background: var(--white);
  border-radius: 20px;
  border: 1px solid rgba(39, 61, 82, 0.08);
  padding: 2rem;
  box-shadow: 0 8px 30px rgba(39, 61, 82, 0.06);
}

.mockup-header {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(39, 61, 82, 0.08);
}

.mockup-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #059669);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.mockup-name {
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.9rem;
}

.mockup-sub {
  color: var(--text-light);
  font-size: 0.75rem;
}

.chat-bubble {
  padding: 0.8rem 1.2rem;
  border-radius: 16px;
  font-size: 0.85rem;
  line-height: 1.7;
  margin-bottom: 0.8rem;
  max-width: 85%;
}

.chat-ai {
  background: rgba(155, 127, 184, 0.1);
  color: var(--text-primary);
  border-bottom-left-radius: 4px;
}

.chat-user {
  background: var(--warm-gray);
  color: var(--text-primary);
  border-bottom-right-radius: 4px;
  margin-left: auto;
}

/* ─── Background (Stats) ─── */
.background {
  padding: 6rem 0;
  background: var(--white);
}

.bg-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin: 3rem 0;
}

.bg-stat {
  text-align: center;
  padding: 2.5rem 1.5rem;
  background: linear-gradient(135deg, #EDF5F0, #E8F5E9);
  border-radius: 16px;
}

.bg-stat-value {
  font-family: 'DM Sans', sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--navy);
}

.bg-stat-value span {
  font-size: 0.5em;
  font-weight: 400;
}

.bg-stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
}

/* Source citation (converted from inline style) */
.bg-stat-source {
  font-size: 0.75em;
  color: var(--text-light);
}

/* ─── Challenges ─── */
.challenges {
  padding: 6rem 0;
  background: var(--off-white);
}

.challenge-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

.challenge-card {
  padding: 2rem;
  border-radius: 16px;
  background: var(--white);
  border-left: 4px solid;
  box-shadow: 0 2px 12px rgba(39, 61, 82, 0.04);
}

.challenge-card:nth-child(1) { border-color: #ef4444; }
.challenge-card:nth-child(2) { border-color: #f59e0b; }
.challenge-card:nth-child(3) { border-color: #8b5cf6; }

.challenge-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 0.8rem;
}

.challenge-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ─── Features ─── */
.features {
  padding: 6rem 0;
  background: var(--white);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.feature-card {
  padding: 2.5rem;
  border-radius: 16px;
  background: var(--off-white);
  border: 1px solid rgba(39, 61, 82, 0.06);
  transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(39, 61, 82, 0.08);
}

.feature-num {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--white);
  background: var(--navy);
  display: inline-block;
  padding: 0.3rem 0.8rem;
  border-radius: 100px;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 0.8rem;
}

.feature-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* Feature evidence footnote (converted from inline style) */
.feature-evidence {
  font-size: 0.78em;
  color: var(--text-light);
}

/* Highlight feature card */
.feature-card.highlight-card {
  background: linear-gradient(135deg, var(--navy-deep), var(--navy));
  border: none;
}

.feature-card.highlight-card .feature-num {
  background: var(--accent);
}

.feature-card.highlight-card h3 {
  color: var(--white);
}

.feature-card.highlight-card p {
  color: rgba(255, 255, 255, 0.75);
}

/* ─── How It Works (Flow) ─── */
.how-it-works {
  padding: 6rem 0;
  background: var(--warm-gray);
}

.how-it-works-desc {
  color: var(--text-secondary);
}

.flow-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

.flow-step {
  text-align: center;
  position: relative;
}

.flow-step::after {
  content: '';
  position: absolute;
  top: 2.5rem;
  right: -0.75rem;
  width: 1.5rem;
  height: 2px;
  background: linear-gradient(90deg, var(--coral), transparent);
}

.flow-step:last-child::after {
  display: none;
}

.flow-step-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  margin: 0 auto 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'DM Sans', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--white);
}

.flow-step:nth-child(1) .flow-step-icon { background: var(--navy); }
.flow-step:nth-child(2) .flow-step-icon { background: var(--accent); }
.flow-step:nth-child(3) .flow-step-icon { background: #ef4444; }
.flow-step:nth-child(4) .flow-step-icon { background: #8b5cf6; }

.flow-step-role {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 0.4rem;
}

.flow-step h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 0.6rem;
}

.flow-step p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ─── Pricing ─── */
.pricing {
  padding: 6rem 0;
  background: var(--off-white);
}

.pricing-desc {
  color: var(--text-secondary);
}

.pricing-card {
  max-width: 600px;
  margin: 3rem auto 0;
  background: var(--white);
  border-radius: 20px;
  padding: 3rem;
  text-align: center;
  box-shadow: 0 8px 40px rgba(39, 61, 82, 0.08);
  border-top: 4px solid var(--accent);
}

.pricing-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--accent);
  background: var(--accent-light);
  padding: 0.3rem 1rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
}

.pricing-amount {
  font-family: 'DM Sans', sans-serif;
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--navy);
}

.pricing-amount small {
  font-size: 0.35em;
  font-weight: 400;
  color: var(--text-secondary);
}

.pricing-note {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
  margin-bottom: 2rem;
}

.pricing-features {
  text-align: left;
  list-style: none;
  margin-bottom: 2rem;
}

.pricing-features li {
  padding: 0.6rem 0;
  font-size: 0.9rem;
  color: var(--text-primary);
  border-bottom: 1px solid rgba(39, 61, 82, 0.06);
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.pricing-features li::before {
  content: '\2713';
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
}

/* Pricing CTA button (converted from inline style) */
.pricing-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--white);
  background: var(--navy);
  border-radius: 100px;
  text-decoration: none;
  transition: transform 0.3s, box-shadow 0.3s;
}

.pricing-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.pricing-extra {
  font-size: 0.82rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(39, 61, 82, 0.06);
}

/* Cost highlight (converted from inline style) */
.pricing-cost-highlight {
  color: var(--navy);
}

/* ─── Security ─── */
.security {
  padding: 6rem 0;
  background: var(--warm-gray);
}

.security .section-label { color: var(--coral); }
.security .section-title { color: var(--navy); }
.security .section-title .jp { color: var(--text-secondary); }

.security-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

.security-item {
  padding: 1.8rem;
  border-radius: 12px;
  background: var(--white);
  border: 1px solid rgba(39, 61, 82, 0.06);
  box-shadow: 0 2px 8px rgba(39, 61, 82, 0.03);
}

.security-item h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 0.5rem;
}

.security-item p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ─── CTA ─── */
.cta {
  padding: 6rem 0;
  background: linear-gradient(135deg, rgba(176, 160, 200, 0.15), rgba(132, 191, 168, 0.15));
  text-align: center;
}

.cta h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 1rem;
}

.cta p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2.5rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  background: var(--navy);
  border-radius: 100px;
  text-decoration: none;
  transition: transform 0.3s, box-shadow 0.3s;
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

/* ─── Cocoro Footer (simple) ─── */
footer {
  padding: 2rem 0;
  background: var(--warm-gray);
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-light);
}

footer a {
  color: var(--text-secondary);
  text-decoration: none;
}

footer a:hover {
  color: var(--navy);
}

/* ─── Dark Mode — Component Overrides ─── */
@media (prefers-color-scheme: dark) {
  /* Navigation */
  nav {
    background: rgba(21, 28, 40, 0.95);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.3);
  }

  /* Hero */
  .hero {
    background: linear-gradient(160deg, #1A2030 0%, var(--off-white) 50%, var(--warm-gray) 100%);
  }

  .hero::before {
    background: radial-gradient(circle, rgba(208, 192, 232, 0.06) 0%, transparent 60%);
  }

  .hero-badge {
    background: rgba(208, 192, 232, 0.2);
    border: 1px solid rgba(208, 192, 232, 0.4);
    color: var(--accent);
  }

  .hero-stat {
    background: var(--white);
    border: 1px solid rgba(138, 172, 200, 0.12);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  }

  .hero-stat-value {
    color: var(--accent);
  }

  .hero-stat-label {
    color: var(--text-secondary);
  }

  .hero-mockup {
    background: var(--white);
    border: 1px solid rgba(138, 172, 200, 0.12);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
  }

  .mockup-header {
    border-bottom: 1px solid rgba(138, 172, 200, 0.12);
  }

  .chat-ai {
    background: rgba(208, 192, 232, 0.15);
  }

  .chat-user {
    background: var(--warm-gray);
  }

  /* Background stats — bright numbers */
  .bg-stat {
    background: linear-gradient(135deg, #1A2838, #1E2E3A);
    border: 1px solid rgba(138, 172, 200, 0.1);
  }

  .bg-stat-value {
    color: var(--navy);
  }

  .bg-stat-label {
    color: var(--text-secondary);
  }

  /* Challenges — visible colored borders */
  .challenge-card {
    background: var(--white);
    border: 1px solid rgba(138, 172, 200, 0.08);
    border-left: 4px solid;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
  }

  .challenge-card:nth-child(1) { border-left-color: #f87171; }
  .challenge-card:nth-child(2) { border-left-color: #fbbf24; }
  .challenge-card:nth-child(3) { border-left-color: #a78bfa; }

  /* Features — visible borders */
  .feature-card {
    background: var(--off-white);
    border: 1px solid rgba(138, 172, 200, 0.1);
  }

  .feature-card:hover {
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    border-color: rgba(208, 192, 232, 0.2);
  }

  /* Pricing — stands out */
  .pricing-card {
    background: var(--white);
    border: 1px solid rgba(138, 172, 200, 0.1);
    border-top: 4px solid var(--accent);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.25);
  }

  .pricing-amount {
    color: var(--navy);
  }

  .pricing-features li {
    border-bottom: 1px solid rgba(138, 172, 200, 0.1);
  }

  .pricing-extra {
    border-top: 1px solid rgba(138, 172, 200, 0.1);
  }

  /* Security */
  .security-item {
    background: var(--white);
    border: 1px solid rgba(138, 172, 200, 0.1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  }

  /* CTA */
  .cta {
    background: linear-gradient(135deg, rgba(208, 192, 232, 0.08), rgba(125, 212, 168, 0.08));
  }

  .cta-btn:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
  }

  /* Footer */
  footer {
    color: var(--text-secondary);
  }

  footer a {
    color: var(--text-secondary);
  }

  footer a:hover {
    color: var(--navy);
  }
}

/* ─── Cocoro-specific Responsive ─── */
@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero-visual {
    display: none;
  }

  .bg-stats {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .bg-stat {
    padding: 1.5rem 1rem;
  }

  .bg-stat-value {
    font-size: 2rem;
  }

  .bg-stat-label {
    font-size: 0.8rem;
    line-height: 1.5;
  }

  .bg-stat-source {
    font-size: 0.65em;
  }

  .challenge-cards {
    grid-template-columns: 1fr;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .feature-card {
    padding: 1.5rem;
  }

  .flow-steps {
    grid-template-columns: 1fr 1fr;
  }

  .flow-step::after {
    display: none;
  }

  .security-grid {
    grid-template-columns: 1fr;
  }

  .pricing-card {
    padding: 2rem 1.5rem;
  }

  .pricing-amount {
    font-size: 2.5rem;
  }

  .hero h1 {
    font-size: 1.6rem;
  }

  .hero-desc {
    font-size: 0.9rem;
  }

  .hero-stats {
    gap: 0.8rem;
  }
}