/* 業務システムポータル — 設計書 §5 に準拠 */

:root {
  --color-bg: #f6f8fb;
  --color-card: #ffffff;
  --color-text: #1a1d21;
  --color-muted: #5c6370;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-border: #e5e7eb;
  --shadow-card: 0 1px 3px rgba(26, 29, 33, 0.08);
  --shadow-card-hover: 0 8px 24px rgba(26, 29, 33, 0.1);
  --radius: 10px;
  --font-stack: system-ui, -apple-system, "Segoe UI", "Hiragino Sans",
    "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 100;
  padding: 0.5rem 1rem;
  background: var(--color-card);
  color: var(--color-accent);
  font-weight: 600;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.site-header {
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
}

.site-header__logo {
  height: 40px;
  width: auto;
  max-width: min(120px, 28vw);
  object-fit: contain;
  flex-shrink: 0;
}

.site-header__title {
  margin: 0;
  font-size: clamp(1.05rem, 2.5vw, 1.35rem);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.02em;
  flex: 1;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: auto;
}

.site-header__user {
  font-size: 0.875rem;
  color: var(--color-muted);
}

.site-header__link {
  font-size: 0.875rem;
  color: var(--color-accent);
  text-decoration: none;
}
.site-header__link:hover { text-decoration: underline; }

.site-header__logout {
  font-size: 0.875rem;
  padding: 0.3rem 0.75rem;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  cursor: pointer;
  color: var(--color-muted);
  transition: background 0.15s;
}
.site-header__logout:hover { background: var(--color-border); }

.main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

.lead {
  margin: 0 0 1.5rem;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.cards-section__title {
  margin: 0 0 1rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
}

.app-status {
  margin-bottom: 1rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  background: #fef3c7;
  color: #92400e;
  border: 1px solid #fcd34d;
}

.app-status[hidden] {
  display: none !important;
}

.app-cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

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

@media (min-width: 960px) {
  .app-cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

.app-card {
  margin: 0;
}

.app-card__article {
  height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 1.25rem 1.35rem;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.app-card__article:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.app-card__title {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  font-weight: 600;
}

.app-card__desc {
  margin: 0 0 1.25rem;
  flex: 1;
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.55;
}

.app-card__link {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.1rem;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  color: #fff;
  background: var(--color-accent);
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: background 0.15s ease;
}

.app-card__link:hover {
  background: var(--color-accent-hover);
}

.app-card__link:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.site-footer {
  margin-top: auto;
  padding: 1.25rem 1.25rem 2rem;
  border-top: 1px solid var(--color-border);
  background: var(--color-card);
}

.site-footer p {
  max-width: 1100px;
  margin: 0 auto;
  font-size: 0.8rem;
  color: var(--color-muted);
  text-align: center;
}

body {
  display: flex;
  flex-direction: column;
}