@import url('https://fonts.googleapis.com/css2?family=Kosugi+Maru&family=Noto+Serif+JP:wght@500;700&display=swap');

:root {
  --bg: #f6f1e8;
  --ink: #1f1d19;
  --muted: #6c6559;
  --line: #dfd3c1;
  --panel: #fffaf1;
  --green: #567a4f;
  --orange: #cf6f47;
  --blue: #4a6d8f;
  --font-body: "Kosugi Maru", "Noto Sans JP", sans-serif;
  --font-title: "Noto Serif JP", serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 90% 5%, rgba(74, 109, 143, 0.16), transparent 28%),
    radial-gradient(circle at 8% 20%, rgba(207, 111, 71, 0.13), transparent 25%),
    var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
}

.shell {
  min-height: 100svh;
  width: min(980px, 100%);
  margin: 0 auto;
  padding: 24px 18px 34px;
}

.hero {
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  font-size: 0.74rem;
}

.hero h1 {
  margin: 8px 0 10px;
  font-family: var(--font-title);
  font-size: clamp(1.8rem, 5.2vw, 2.7rem);
  line-height: 1.1;
}

.subtitle {
  margin: 0;
  color: var(--muted);
  max-width: 58ch;
  line-height: 1.6;
}

.auth-gate,
.dashboard {
  margin-top: 22px;
}

.auth-gate.is-hidden,
.dashboard.is-hidden,
.field.is-hidden {
  display: none;
}

.auth-card {
  width: min(450px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px 18px;
  box-shadow: 0 10px 24px rgba(31, 29, 25, 0.06);
}

.auth-card h2 {
  margin: 0 0 16px;
  font-family: var(--font-title);
  font-size: 1.2rem;
}

.auth-form {
  display: grid;
  gap: 12px;
}

.field {
  display: grid;
  gap: 6px;
}

.field span {
  font-size: 0.88rem;
  color: var(--muted);
}

input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  padding: 11px 12px;
  font-family: inherit;
  font-size: 0.98rem;
}

input:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 1px;
}

.btn {
  border: none;
  border-radius: 10px;
  padding: 11px 14px;
  font-family: inherit;
  font-size: 0.96rem;
  cursor: pointer;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--green);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
}

.text-btn {
  margin-top: 10px;
  border: none;
  padding: 0;
  background: transparent;
  color: var(--muted);
  text-decoration: underline;
  font-family: inherit;
  font-size: 0.9rem;
  cursor: pointer;
}

.status {
  min-height: 1.3em;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.dash-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.welcome {
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.username {
  margin: 4px 0 0;
  font-family: var(--font-title);
  font-size: 1.15rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.feature {
  display: block;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  padding: 14px 14px 12px;
  text-decoration: none;
  color: inherit;
  min-height: 162px;
}

.feature h3 {
  margin: 0;
  font-family: var(--font-title);
  font-size: 1.02rem;
}

.feature p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.feature .cta {
  margin-top: 14px;
  display: inline-block;
  font-size: 0.84rem;
  color: var(--blue);
}

.feature-kanji:hover {
  transform: translateY(-1px);
  transition: transform 120ms ease;
}

.feature-disabled {
  opacity: 0.72;
}

@media (max-width: 860px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
}