/* Login page */
:root {
  --primary: #1F497D;
  --main: #93c5fd;
  --bg: #f3f5f7;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: rgba(31,73,125,0.18);
}

body {
  font-family: Arial, sans-serif;
  background-color: var(--bg);
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  color: var(--text);
}

.topbar {
  background: var(--primary);
  color: #fff;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.lang-toggle {
  font-size: 1.4rem;
  background: transparent;
  border: none;
  color: #fff;
  cursor: pointer;
  padding: 6px 8px;
  border-radius: 10px;
  line-height: 1;
}

.lang-toggle:hover {
  background: rgba(255,255,255,.12);
  filter: brightness(1.2);
}

.lang-toggle:focus-visible {
  outline: 2px solid var(--main);
  outline-offset: 2px;
}

.page {
  width: min(520px, 92vw);
  margin: 0 auto;
  padding: 36px 0 60px;
  text-align: center;
}

.logo-wrap {
  display: flex;
  justify-content: center;
  margin: 0 0 18px;
}

.logo-wrap img {
  width: 100%;
  max-width: 340px;
  height: auto;
}

form {
  background: var(--card);
  padding: 24px 22px;
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: 0 8px 20px rgba(15,23,42,0.06);
  text-align: left;
}

.field {
  margin-bottom: 14px;
}

label {
  display: block;
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 6px;
  color: var(--text);
}

input[type="email"],
input[type="password"] {
  width: 100%;
  padding: 12px 10px;
  font-size: 14px;
  border-radius: 8px;
  border: 1px solid rgba(31,73,125,0.22);
  background: #f8fafc;
  box-sizing: border-box;
}

.actions {
  margin-top: 14px;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: 10px;
}

button[type="submit"] {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

button[type="submit"]:hover {
  filter: brightness(1.05);
}

.msg {
  margin: 10px 0 0;
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 13px;
}

.msg.notice {
  border: 1px solid rgba(6,95,70,.25);
  background: rgba(6,95,70,.06);
  color: #065f46;
}

.msg.error {
  border: 1px solid rgba(220,38,38,.25);
  background: rgba(220,38,38,.06);
  color: #b91c1c;
}

.signup {
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

.signup a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 700;
}

.signup a:hover {
  text-decoration: underline;
}

.social-login {
  margin-top: 18px;
  max-width: 520px;
}

.social-btn {
  display: block;
  margin-bottom: 12px;
  padding: 10px 18px;
  border-radius: 8px;
  text-align: center;
  text-decoration: none;
  font-weight: 700;
  font-size: 14px;
  border: 1px solid var(--border);
}

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

.line-btn {
  background: #06C755;
  color: #fff;
  border-color: #06C755;
}

.social-btn:hover {
  filter: brightness(0.96);
}

@media (max-width: 520px) {
  .logo-wrap img {
    max-width: 260px;
  }
}

/* =====================================================================
 * 20260609 総合テストUI対応: ログイン画面スマホ最適化
 * ===================================================================== */
html, body { max-width: 100%; overflow-x: hidden; }
*, *::before, *::after { box-sizing: border-box; }
@media (max-width: 560px) {
  .topbar { min-height: 54px; padding: 8px 12px; }
  .page { width: min(100% - 24px, 520px); padding: clamp(18px, 5vh, 32px) 0 calc(22px + env(safe-area-inset-bottom,0px)); }
  .logo-wrap { margin-bottom: 12px; }
  .logo-wrap img { max-width: min(72vw, 240px); }
  form { padding: 20px 16px; border-radius: 16px; }
  input[type="email"], input[type="password"] { min-height: 48px; font-size: 16px; }
  .actions { justify-content: stretch; }
  button[type="submit"] { width: 100%; min-height: 48px; font-size: 16px; }
  .social-btn { min-height: 46px; display: flex; align-items: center; justify-content: center; }
}
@media (max-height: 720px) and (max-width: 560px) {
  .page { padding-top: 14px; }
  .logo-wrap img { max-width: min(58vw, 210px); }
  form { padding-top: 16px; padding-bottom: 16px; }
}

/* 20260702: ログイン画面のお問い合わせ導線 */
.login-help-links {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px 10px;
  line-height: 1.7;
}
.login-help-separator {
  color: var(--muted);
}
@media (max-width: 420px) {
  .login-help-links {
    flex-direction: column;
    gap: 2px;
  }
  .login-help-separator {
    display: none;
  }
}