@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500&family=Lato:wght@300;400&display=swap');

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

:root {
  --bg: #F9F8F6;
  --surface: #FFFFFF;
  --border: #E8E4DF;
  --text-primary: #1C1C1C;
  --text-secondary: #6B6B6B;
  --accent: #4B5D67;
  --accent-light: #EEF1F3;
  --danger: #C0392B;
  --radius: 8px;
  --shadow: 0 1px 4px rgba(0,0,0,0.08);
}

body {
  font-family: 'Noto Sans JP', 'Lato', sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* ─── Login ─────────────────────────────── */

.login-wrap {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 48px 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow);
}

.login-logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo .brand {
  font-family: 'Lato', sans-serif;
  font-weight: 300;
  font-size: 22px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.login-logo .sub {
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--text-secondary);
  margin-top: 4px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 6px;
  letter-spacing: 0.05em;
}

.form-group input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  background: var(--bg);
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus {
  border-color: var(--accent);
}

.btn {
  display: block;
  width: 100%;
  padding: 13px;
  margin-top: 24px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: opacity 0.2s;
}

.btn:hover { opacity: 0.85; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.error-msg {
  margin-top: 12px;
  font-size: 12px;
  color: var(--danger);
  text-align: center;
  min-height: 18px;
}

/* ─── Portal Layout ──────────────────────── */

.portal-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.portal-header-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.portal-brand {
  font-family: 'Lato', sans-serif;
  font-weight: 300;
  font-size: 16px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.portal-brand span {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--text-secondary);
  margin-left: 8px;
  vertical-align: middle;
}

.logout-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 14px;
  font-size: 12px;
  font-family: inherit;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
}

.logout-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.portal-main {
  max-width: 900px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}

/* ─── Section ────────────────────────────── */

.section {
  margin-bottom: 48px;
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.section-title {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
}

.section-desc {
  font-size: 12px;
  color: var(--text-secondary);
}

/* ─── MVV Card ───────────────────────────── */

.mvv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
}

.mvv-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.mvv-card .mvv-label {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.mvv-card .mvv-title {
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 10px;
  line-height: 1.4;
}

.mvv-card .mvv-body {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ─── Link Cards (資料) ─────────────────── */

.link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}

.link-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  transition: all 0.2s;
}

.link-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
  transform: translateY(-1px);
}

.link-card .link-icon {
  font-size: 20px;
  flex-shrink: 0;
}

.link-card .link-text {
  font-size: 13px;
  line-height: 1.4;
}

.link-card .link-sub {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* ─── Manual List ────────────────────────── */

.manual-filter {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.filter-btn {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 12px;
  font-family: inherit;
  background: var(--surface);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s;
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.manual-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.manual-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-decoration: none;
  color: var(--text-primary);
  transition: all 0.15s;
}

.manual-item:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

.manual-item-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.manual-tag {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 10px;
  letter-spacing: 0.08em;
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
  flex-shrink: 0;
}

.manual-title {
  font-size: 13px;
}

.manual-arrow {
  color: var(--border);
  flex-shrink: 0;
}

.manual-empty {
  text-align: center;
  padding: 40px;
  color: var(--text-secondary);
  font-size: 13px;
}

.loading {
  text-align: center;
  padding: 32px;
  color: var(--text-secondary);
  font-size: 13px;
}

/* ─── Responsive ─────────────────────────── */

@media (max-width: 600px) {
  .login-card {
    padding: 36px 24px;
  }
  .portal-main {
    padding: 24px 16px 60px;
  }
  .mvv-grid {
    grid-template-columns: 1fr;
  }
}