/* ============================================================
   AIRA Score — 会員登録・ログイン画面
   v2 "Aurora Ink" テーマのトークンを流用
   ============================================================ */

:root {
  color-scheme: dark;
  --ink: #070b16;
  --ink-2: #0b1222;
  --panel: rgba(148, 184, 255, 0.045);
  --panel-solid: #0d1526;
  --border: rgba(148, 184, 255, 0.14);
  --border-strong: rgba(148, 184, 255, 0.26);
  --text: #e9eefb;
  --muted: #93a3c0;
  --faint: #61708e;
  --mint: #34d399;
  --cyan: #22d3ee;
  --danger: #f27b72;
  --aurora: linear-gradient(120deg, #34d399 0%, #22d3ee 60%, #4aa8e2 100%);
  font-family: "Noto Sans JP", "Yu Gothic UI", Meiryo, sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  color: var(--text);
  font-size: 14px;
  background:
    radial-gradient(1100px 520px at 82% -12%, rgba(34, 211, 238, 0.13), transparent 62%),
    radial-gradient(900px 480px at -8% 8%, rgba(52, 211, 153, 0.10), transparent 58%),
    radial-gradient(700px 700px at 50% 118%, rgba(74, 168, 226, 0.08), transparent 60%),
    var(--ink);
  background-attachment: fixed;
}
button, input { font: inherit; color: inherit; }
button { cursor: pointer; }
button:focus-visible, input:focus-visible, a:focus-visible { outline: 2px solid var(--mint); outline-offset: 2px; border-radius: 4px; }
a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 34px 18px 48px;
}

.auth-card {
  width: 100%;
  max-width: 480px;
  padding: 30px 30px 26px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--panel-solid);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.45);
}
.auth-card.wide { max-width: 560px; }

.auth-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; }
.brand-mark {
  width: 26px; height: 26px; border-radius: 8px;
  background: var(--aurora);
  box-shadow: 0 0 18px rgba(52, 211, 153, 0.45);
}
.brand-name { font-family: "Space Grotesk", "Noto Sans JP", sans-serif; font-size: 17px; font-weight: 700; letter-spacing: 0.02em; }
.brand-name em { font-style: normal; background: var(--aurora); -webkit-background-clip: text; background-clip: text; color: transparent; }
.brand-badge {
  padding: 2px 8px; border-radius: 99px;
  border: 1px solid var(--border-strong);
  color: var(--cyan); font-size: 10px; font-weight: 700; letter-spacing: 0.12em;
}

.aira-greeting { display: flex; align-items: flex-start; gap: 13px; margin-bottom: 22px; }
.aira-avatar {
  display: grid; place-items: center;
  width: 46px; height: 46px; flex: none;
  border-radius: 50%;
  background: var(--aurora);
  color: #04160f;
  box-shadow: 0 0 22px rgba(52, 211, 153, 0.4), inset 0 -6px 12px rgba(4, 22, 15, 0.22);
  animation: aira-glow 3.2s ease-in-out infinite;
}
.aira-avatar svg { width: 24px; height: 24px; }
@keyframes aira-glow {
  0%, 100% { box-shadow: 0 0 16px rgba(52, 211, 153, 0.32), inset 0 -6px 12px rgba(4, 22, 15, 0.22); }
  50% { box-shadow: 0 0 26px rgba(34, 211, 238, 0.5), inset 0 -6px 12px rgba(4, 22, 15, 0.22); }
}
@media (prefers-reduced-motion: reduce) {
  .aira-avatar { animation: none; }
}
.aira-bubble {
  position: relative;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel);
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.65;
}
.aira-bubble::before {
  content: "";
  position: absolute; top: 16px; left: -6px;
  width: 10px; height: 10px;
  border-left: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--panel-solid);
  transform: rotate(45deg);
}
.aira-bubble strong { color: var(--text); }

.auth-card h1 { margin: 0 0 6px; font-size: 22px; letter-spacing: 0.01em; }
.auth-lead { margin: 0 0 20px; color: var(--muted); font-size: 12.5px; line-height: 1.7; }

.auth-form { display: grid; gap: 15px; }
.field { display: grid; gap: 6px; }
.field label { font-size: 12px; font-weight: 700; color: var(--muted); }
.field label small { font-weight: 400; color: var(--faint); }
.field input {
  height: 42px;
  padding: 0 13px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(148, 184, 255, 0.05);
  color: var(--text);
}
.field input::placeholder { color: var(--faint); }
.field input:focus { border-color: var(--border-strong); outline: none; }

.field-group { display: grid; gap: 8px; }
.field-group-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.field-group-head span { font-size: 12px; font-weight: 700; color: var(--muted); }
.field-group-head small { color: var(--faint); font-size: 11px; }
.keyword-fields { display: grid; gap: 8px; }
.keyword-fields input {
  height: 40px;
  padding: 0 13px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(148, 184, 255, 0.05);
  color: var(--text);
}
.keyword-fields input::placeholder { color: var(--faint); }

.auth-error {
  margin: 0;
  padding: 11px 14px;
  border: 1px solid rgba(242, 123, 114, 0.4);
  border-radius: 10px;
  background: rgba(242, 123, 114, 0.08);
  color: var(--danger);
  font-size: 12.5px;
  line-height: 1.6;
}
.auth-error[hidden] { display: none; }

.auth-success {
  margin: 0;
  padding: 11px 14px;
  border: 1px solid rgba(52, 211, 153, 0.4);
  border-radius: 10px;
  background: rgba(52, 211, 153, 0.08);
  color: var(--mint);
  font-size: 12.5px;
  line-height: 1.7;
}
.auth-success[hidden] { display: none; }

.auth-submit {
  height: 46px;
  margin-top: 4px;
  border: 0;
  border-radius: 10px;
  background: var(--aurora);
  color: #04160f;
  font-weight: 800;
  font-size: 14.5px;
  box-shadow: 0 6px 20px rgba(34, 211, 238, 0.22);
}
.auth-submit:hover { filter: brightness(1.08); }
.auth-submit:disabled { opacity: 0.55; cursor: wait; }

.auth-alt { margin: 18px 0 0; padding-top: 16px; border-top: 1px solid var(--border); color: var(--muted); font-size: 12.5px; text-align: center; }

.auth-note { margin: 14px 0 0; color: var(--faint); font-size: 11px; line-height: 1.7; text-align: center; }

@media (max-width: 480px) {
  .auth-card { padding: 24px 18px 22px; }
  .aira-avatar { width: 40px; height: 40px; }
  .aira-avatar svg { width: 21px; height: 21px; }
}