:root {
  --green: #3E9BF4;
  --green-hover: #2f83d6;
  --green-soft: #eaf3fe;
  --ink: #18181b;
  --body: #3f3f46;
  --muted: #8a8f98;
  --faint: #b4b8bf;
  --line: #ededee;
  --bg: #fafafa;
  --surface: #ffffff;
  --red: #dc2626;
  --red-soft: #fdecec;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--body);
}

#app {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.card {
  width: 100%;
  max-width: 420px;
  background: var(--surface);
  border-radius: 24px;
  padding: 24px 44px 48px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04), 0 8px 24px -12px rgba(0,0,0,0.08);
}

.logo {
  display: block;
  width: 100%;
  height: auto;
  margin: 0 auto 14px;
}

h1 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
  margin: 0 0 24px;
  text-align: center;
}

label {
  display: block;
  font-size: 10.5px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.08em;
  margin-bottom: 7px;
}

.fg { margin-bottom: 16px; }

input {
  width: 100%;
  padding: 12px 15px;
  border-radius: 11px;
  border: 1.5px solid var(--line);
  font-size: 14px;
  color: var(--body);
  font-family: inherit;
  outline: none;
  box-sizing: border-box;
}

input:focus { border-color: var(--green); }

button.primary {
  width: 100%;
  padding: 13px 26px;
  background: var(--green);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  font-family: inherit;
  letter-spacing: 0.02em;
  transition: background .15s;
  margin-top: 8px;
}

button.primary:hover { background: var(--green-hover); }
button.primary:disabled { opacity: 0.6; cursor: default; }

.error {
  background: var(--red-soft);
  color: var(--red);
  border-radius: 12px;
  padding: 12px 16px;
  margin-bottom: 18px;
  font-size: 13px;
}

.portal {
  width: 100%;
  max-width: 720px;
}

.portal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}

.portal-header .logo { width: auto; height: 26px; margin: 0; }

.portal-user {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--muted);
}

.logout-btn {
  background: none;
  border: none;
  color: var(--faint);
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
}

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

.greeting {
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
  margin: 0 0 28px;
}

.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}

.tile {
  background: var(--surface);
  border-radius: 18px;
  padding: 28px 20px;
  text-align: center;
  cursor: pointer;
  border: none;
  font-family: inherit;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04), 0 8px 24px -12px rgba(0,0,0,0.08);
  transition: transform .15s, box-shadow .15s;
}

.tile:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.06), 0 16px 32px -12px rgba(0,0,0,0.12);
}

.tile-icon { font-size: 32px; margin-bottom: 12px; }
.tile-name { font-size: 14px; font-weight: 500; color: var(--ink); }

.empty {
  text-align: center;
  color: var(--faint);
  font-size: 13px;
  padding: 60px 0;
}