/*
 * site.css — 公開ページ (Phase 4b: /login, /lp, /demo/system-a, 付随ページ)
 *
 * base.css のデザイントークンを前提に、frontend の Tailwind クラス構成
 * (Login/presentation.tsx, lp/page.tsx, demo/system-a/presentation.tsx) を
 * 素の CSS で再現する。
 */

/* ------------------------------------------------------------------ */
/* ログイン画面 (Login/presentation.tsx)                               */
/* ------------------------------------------------------------------ */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background-color: var(--color-surface-muted);
}
.login-card {
  width: 100%;
  max-width: 420px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-card);
  padding: 3rem;
}
@media (max-width: 640px) {
  .login-card { padding: 2rem; }
}
.login-logo {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--color-fg-primary);
}
.login-info {
  width: 100%;
  background-color: var(--color-surface-muted);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-control);
  padding: 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-fg-primary);
}
.login-form {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.login-field { display: flex; flex-direction: column; gap: 0.375rem; }
.login-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-fg-secondary);
}
.login-input {
  width: 100%;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-control);
  background-color: var(--color-surface);
  color: var(--color-fg-primary);
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-family: inherit;
}
.login-input::placeholder { color: var(--color-fg-muted); }
.login-input:focus { outline: none; border-color: var(--color-accent-blue); }
.login-input:disabled { background-color: var(--gray-100); cursor: not-allowed; }
.login-error {
  font-size: 0.875rem;
  color: var(--color-danger);
  white-space: pre-line;
}
.login-submit { width: 100%; padding: 0.5rem 1rem; font-size: 0.875rem; }
.login-sso {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.login-divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-fg-muted);
  font-size: 0.75rem;
}
.login-divider::before,
.login-divider::after {
  content: "";
  flex: 1;
  border-top: 1px solid var(--color-border-subtle);
}

/* ------------------------------------------------------------------ */
/* サービス紹介 LP (lp/page.tsx)                                       */
/* ------------------------------------------------------------------ */
.lp { background-color: var(--color-surface); min-height: 100vh; }
.lp-container { max-width: 72rem; margin: 0 auto; padding: 0 1.5rem; }

.lp-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--color-border-subtle);
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
}
.lp-header-inner {
  display: flex;
  height: 64px;
  align-items: center;
  justify-content: space-between;
}
.lp-brand {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--color-fg-primary);
}
.lp-header-nav { display: flex; align-items: center; gap: 0.75rem; }
.lp-header-plans {
  display: none;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-fg-secondary);
}
.lp-header-plans:hover { color: var(--color-fg-primary); }
@media (min-width: 640px) { .lp-header-plans { display: block; } }
.lp-header-login {
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-control);
  color: var(--color-fg-primary);
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
}
.lp-header-login:hover { background-color: var(--color-surface-hover); }

.lp-hero { padding: 5rem 0; text-align: center; }
@media (min-width: 640px) { .lp-hero { padding: 7rem 0; } }
.lp-hero-eyebrow {
  margin-bottom: 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-fg-muted);
}
.lp-hero-title {
  max-width: 48rem;
  margin: 0 auto;
  font-size: 2.25rem;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--color-fg-primary);
}
@media (min-width: 640px) { .lp-hero-title { font-size: 3rem; } }
.lp-hero-lead {
  max-width: 42rem;
  margin: 1.5rem auto 0;
  font-size: 1.125rem;
  color: var(--color-fg-secondary);
}
.lp-hero-actions {
  margin-top: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.lp-cta-primary {
  display: inline-block;
  background-color: var(--color-accent);
  border-radius: var(--radius-control);
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: #ffffff;
  transition: background-color 150ms;
}
.lp-cta-primary:hover { background-color: var(--color-accent-hover); }
.lp-cta-outline {
  display: inline-block;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-control);
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-fg-primary);
  transition: background-color 150ms;
}
.lp-cta-outline:hover { background-color: var(--color-surface-hover); }
.lp-hero-demo-note {
  margin-top: 1.5rem;
  font-size: 0.875rem;
  color: var(--color-fg-secondary);
}
.lp-hero-embed {
  max-width: 42rem;
  margin: 3.5rem auto 0;
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface-muted);
  border-radius: var(--radius-card);
  padding: 1.5rem;
  text-align: left;
}
.lp-hero-embed-label {
  margin-bottom: 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-fg-muted);
}
.lp-hero-embed-code {
  background-color: var(--color-accent);
  border-radius: var(--radius-control);
  overflow-x: auto;
  padding: 1rem;
  font-size: 0.75rem;
  line-height: 1.6;
  color: #ffffff;
}

.lp-section { padding: 5rem 0; }
.lp-section-muted { background-color: var(--color-surface-muted); }
.lp-section-title {
  text-align: center;
  font-size: 1.875rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--color-fg-primary);
}
.lp-section-note {
  margin-top: 0.75rem;
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-fg-secondary);
}

.lp-features {
  margin-top: 3rem;
  display: grid;
  gap: 1.5rem;
}
@media (min-width: 640px) { .lp-features { grid-template-columns: 1fr 1fr; } }
.lp-feature {
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface);
  border-radius: var(--radius-card);
  padding: 1.75rem;
}
.lp-feature-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-fg-primary);
}
.lp-feature-body {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-fg-secondary);
}

.lp-plans {
  margin-top: 3rem;
  display: grid;
  gap: 1.5rem;
}
@media (min-width: 640px) { .lp-plans { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .lp-plans { grid-template-columns: repeat(4, 1fr); } }
.lp-plan {
  position: relative;
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface);
  border-radius: var(--radius-card);
  padding: 1.5rem;
}
.lp-plan.is-highlight { border: 2px solid var(--color-accent); }
.lp-plan-badge {
  position: absolute;
  top: -0.75rem;
  left: 1.5rem;
  background-color: var(--color-accent);
  border-radius: 9999px;
  padding: 0.125rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: #ffffff;
}
.lp-plan-name { font-size: 1.125rem; font-weight: 700; color: var(--color-fg-primary); }
.lp-plan-sub { margin-top: 0.125rem; font-size: 0.75rem; color: var(--color-fg-muted); }
.lp-plan-price { margin-top: 1rem; }
.lp-plan-price-value { font-size: 1.875rem; font-weight: 700; color: var(--color-fg-primary); }
.lp-plan-price-unit { margin-left: 0.25rem; font-size: 0.875rem; color: var(--color-fg-muted); }
.lp-plan-features {
  margin-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.lp-plan-feature {
  display: flex;
  align-items: flex-start;
  font-size: 0.875rem;
  color: var(--color-fg-secondary);
}
.lp-plan-feature-check { margin-right: 0.5rem; color: var(--color-accent-blue); }
.lp-plan-cta {
  display: block;
  margin-top: 1.5rem;
  border-radius: var(--radius-control);
  padding: 0.625rem 1rem;
  text-align: center;
  font-size: 0.875rem;
  font-weight: 600;
  transition: background-color 150ms;
}
.lp-plan-cta.is-primary { background-color: var(--color-accent); color: #ffffff; }
.lp-plan-cta.is-primary:hover { background-color: var(--color-accent-hover); }
.lp-plan-cta.is-outline {
  border: 1px solid var(--color-border-strong);
  color: var(--color-fg-primary);
}
.lp-plan-cta.is-outline:hover { background-color: var(--color-surface-hover); }
.lp-plans-note {
  margin-top: 1.5rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-fg-muted);
}

.lp-contact { max-width: 42rem; margin: 0 auto; padding: 0 1.5rem; text-align: center; }
.lp-contact-lead {
  margin-top: 1rem;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-fg-secondary);
}
.lp-contact-cta { margin-top: 2rem; padding: 0.75rem 2rem; }

.lp-footer { border-top: 1px solid var(--color-border-subtle); padding: 2.5rem 0; }
.lp-footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--color-fg-muted);
}
.lp-footer-links { display: flex; gap: 1.5rem; }
.lp-footer-links a:hover { color: var(--color-fg-primary); }

/* ------------------------------------------------------------------ */
/* 模擬システムA (demo/system-a/presentation.tsx)                       */
/* ------------------------------------------------------------------ */
.demo-portal { min-height: 100vh; background-color: #f1f5f9; }
.demo-header { background-color: #1e293b; color: #ffffff; }
.demo-header-inner {
  max-width: 64rem;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
}
.demo-header-title { font-size: 1.125rem; font-weight: 700; }
.demo-header-sub { font-size: 0.75rem; color: #cbd5e1; }
.demo-header-user { font-size: 0.875rem; color: #e2e8f0; }

.demo-main { max-width: 64rem; margin: 0 auto; padding: 2rem 1.5rem; }
.demo-grid { display: grid; gap: 1.5rem; }
@media (min-width: 1024px) {
  .demo-grid { grid-template-columns: minmax(0, 1fr) 420px; }
}
.demo-panel {
  align-self: start;
  border: 1px solid #e2e8f0;
  background-color: #ffffff;
  border-radius: 0.75rem;
  padding: 1.5rem;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}
.demo-panel-title { font-size: 1rem; font-weight: 600; color: #0f172a; }
.demo-panel-lead { margin-top: 0.25rem; font-size: 0.875rem; color: #64748b; }

.demo-users { margin-top: 1rem; display: flex; flex-direction: column; gap: 0.75rem; }
.demo-user {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  border: 1px solid #e2e8f0;
  background-color: #ffffff;
  border-radius: 0.5rem;
  padding: 1rem;
  cursor: pointer;
  transition: background-color 150ms, border-color 150ms;
}
.demo-user:hover { background-color: #f8fafc; }
.demo-user:has(input:checked) { border-color: #3b82f6; background-color: #eff6ff; }
.demo-user input[type="radio"] { margin-top: 0.25rem; }
.demo-user-name { display: block; font-size: 0.875rem; font-weight: 600; color: #0f172a; }
.demo-user-company { margin-left: 0.5rem; font-weight: 400; color: #64748b; }
.demo-user-email { display: block; font-size: 0.75rem; color: #64748b; }
.demo-user-desc { display: block; margin-top: 0.25rem; font-size: 0.75rem; color: #94a3b8; }

.demo-open-btn {
  margin-top: 1.25rem;
  width: 100%;
  border-radius: 0.5rem;
  padding: 0.625rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: #ffffff;
  background-color: #2563eb;
  transition: background-color 150ms;
}
.demo-open-btn:hover:not(:disabled) { background-color: #1d4ed8; }
.demo-open-btn:disabled { cursor: not-allowed; background-color: #94a3b8; }
.demo-error { margin-top: 0.75rem; font-size: 0.875rem; color: #dc2626; }
.demo-status { margin-top: 0.75rem; font-size: 0.75rem; color: #64748b; }

.demo-chat {
  display: flex;
  height: 640px;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid #e2e8f0;
  background-color: #ffffff;
  border-radius: 0.75rem;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}
.demo-chat iframe { height: 100%; width: 100%; border: 0; }
.demo-chat-placeholder {
  display: flex;
  height: 100%;
  align-items: center;
  justify-content: center;
  padding: 0 1.5rem;
  text-align: center;
  font-size: 0.875rem;
  color: #94a3b8;
}