/* ── Shared styles for textquiz ── */

:root {
  --gold:      #d4a85a;
  --gold-bg:   #fffbf2;
  --body-bg:   #f5f4f0;
  --card-bg:   #fff;
  --text:      #1a1a1a;
  --muted:     #666;
  --border:    #e0ddd6;
  --radius-lg: 12px;
  --radius-sm: 8px;
  --shadow:    0 2px 12px rgba(0,0,0,0.08);
}

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

body {
  font-family: "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  background: var(--body-bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem 1rem;
}

/* ── Header ── */
header {
  text-align: center;
  margin-bottom: 2rem;
}
header h1 { font-size: 1.5rem; font-weight: 700; letter-spacing: 0.05em; }
header p  { font-size: 0.85rem; color: var(--muted); margin-top: 0.25rem; }

.header-links {
  font-size: 0.78rem;
  color: #aaa;
  margin-top: 0.4rem;
}
.header-links a {
  color: #aaa;
  text-decoration: none;
  cursor: pointer;
}
.header-links a:hover { color: var(--muted); }

/* ── Card ── */
.card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  width: 100%;
}

/* ── Buttons ── */
.btn {
  background: var(--text);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.75rem 1.75rem;
  font-size: 1rem;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.btn:hover    { background: #333; }
.btn:disabled { background: #999; cursor: default; }
.btn-sm {
  padding: 0.65rem 1.5rem;
  font-size: 0.95rem;
}

/* ── Form elements (login / register) ── */
.field { margin-bottom: 1.1rem; }
label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #777;
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}
input[type="email"],
input[type="password"] {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  background: #fafaf8;
  color: var(--text);
  transition: border-color 0.15s;
  outline: none;
}
input:focus { border-color: var(--gold); background: #fff; }

.error-box {
  background: #fef2f2;
  border: 1px solid #fca5a5;
  border-radius: 6px;
  color: #b91c1c;
  font-size: 0.85rem;
  padding: 0.6rem 0.85rem;
  margin-bottom: 1rem;
}

/* ── JLPT badges ── */
.badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2em 0.7em;
  border-radius: 999px;
  letter-spacing: 0.05em;
}
.badge-n5 { background: #e0f2fe; color: #0369a1; }
.badge-n4 { background: #fef9c3; color: #854d0e; }