/* ============================================================
   TEA's BIBLE 風テーマ（淡いブルー系）— elf.ne.jp メールパスワード変更
   外部フォント/画像なし（CSP: self のみ）で上品な淡青UI
   ============================================================ */

/* 英字フォント Tenor Sans（自前ホスト＝CSP font-src 'self' に適合） */
@font-face {
  font-family: 'Tenor Sans';
  font-style: normal; font-weight: 400; font-display: swap;
  src: url('/passwd-modify/static/fonts/tenor-sans-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Tenor Sans';
  font-style: normal; font-weight: 400; font-display: swap;
  src: url('/passwd-modify/static/fonts/tenor-sans-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

:root {
  --blue:       #6DA4D6;   /* teabible ソフトブルー */
  --blue-deep:  #4f8bc4;   /* ボタン/見出し */
  --blue-dark:  #3c74ab;   /* 強調 */
  --bg-1:       #f4f8fc;
  --bg-2:       #e7eff7;
  --card:       #ffffff;
  --text:       #2b3a47;   /* 冷たい濃いスレート */
  --muted:      #7d8ca0;
  --border:     #dce6f1;
  --soft:       #eef4fb;   /* 淡青パネル */
  --ok:         #2f855a;
  --ok-bg:      #eefaf3;
  --err:        #c0564b;
  --err-bg:     #fbf1ef;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  min-height: 100vh; display: flex; flex-direction: column;
  align-items: center; justify-content: center; padding: 2rem 1rem;
  background: radial-gradient(120% 120% at 50% 0%, var(--bg-1) 0%, var(--bg-2) 100%);
  font-family: 'Optima', 'Tenor Sans', "Hiragino Kaku Gothic ProN", "Meiryo", system-ui, sans-serif;
  color: var(--text);
}

.card {
  position: relative; background: var(--card);
  border: 1px solid var(--border); border-radius: 16px;
  box-shadow: 0 10px 40px rgba(60, 116, 171, 0.13);
  padding: 2.5rem 2.4rem 2rem; width: 100%; max-width: 440px;
  overflow: hidden;
}
/* カード上端の淡青グラデーション帯 */
.card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--blue), var(--blue-deep), var(--blue-dark));
}

/* ── ブランド ─────────────────────────── */
.brand { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 1.5rem; }
.brand-icon { width: 38px; height: 38px; flex: none; color: var(--blue-deep); }
.brand-emoji { font-size: 1.95rem; line-height: 1; flex: none; }
.brand-text { line-height: 1.2; }
.brand-name {
  font-family: 'Optima', 'Tenor Sans', "Hiragino Kaku Gothic ProN", "Meiryo", system-ui, sans-serif;
  font-size: 1.05rem; font-weight: 600; letter-spacing: 0.04em; color: var(--blue-dark);
}
.brand-sub { font-size: 0.7rem; letter-spacing: 0.12em; color: var(--muted); text-transform: uppercase; }

/* ── ステップ ─────────────────────────── */
.steps { display: flex; gap: 0; margin-bottom: 1.6rem; }
.step {
  flex: 1; text-align: center; padding: 0.4rem 0;
  font-size: 0.78rem; font-weight: 700;
  border-bottom: 3px solid var(--border); color: #aebccd;
}
.step.active { border-bottom-color: var(--blue-deep); color: var(--blue-deep); }
.step.done   { border-bottom-color: var(--blue);      color: var(--blue-dark); }

/* ── 見出し ───────────────────────────── */
.card-title {
  font-family: 'Optima', 'Tenor Sans', "Hiragino Kaku Gothic ProN", "Meiryo", system-ui, sans-serif;
  font-size: 1.35rem; font-weight: 700; margin-bottom: 0.3rem; color: #20303d;
}
.card-sub { font-size: 0.85rem; color: var(--muted); margin-bottom: 1.5rem; line-height: 1.6; }

/* ── アカウント表示バナー（どのアカウントを変えるか明示）── */
.account-banner {
  display: flex; align-items: center; gap: 0.75rem;
  background: var(--soft); border: 1px solid #d3e3f3;
  border-left: 4px solid var(--blue-deep);
  border-radius: 10px; padding: 0.85rem 1rem; margin-bottom: 1.5rem;
}
.account-banner .ab-icon { width: 26px; height: 26px; flex: none; color: var(--blue-deep); }
.account-banner .ab-emoji { font-size: 1.5rem; line-height: 1; flex: none; }
.account-banner .ab-label { font-size: 0.72rem; color: var(--muted); margin-bottom: 2px; }
.account-banner .ab-email {
  font-size: 1.02rem; font-weight: 700; color: var(--blue-dark);
  word-break: break-all; line-height: 1.3;
}

/* ── フォーム ─────────────────────────── */
label { display: block; font-size: 0.82rem; font-weight: 600; color: #4f5e6e; margin-bottom: 0.4rem; }
.field { margin-bottom: 1.2rem; }
.field-hint { font-size: 0.74rem; color: var(--muted); margin-top: 0.35rem; }

.input-wrap { position: relative; }
.input-wrap .in-icon {
  position: absolute; left: 0.8rem; top: 50%; transform: translateY(-50%);
  width: 18px; height: 18px; color: #a7bace; pointer-events: none;
}
.input-wrap input[type="text"],
.input-wrap input[type="email"] { padding-left: 2.6rem; }

input[type="text"], input[type="password"], input[type="email"] {
  width: 100%; padding: 0.65rem 0.9rem;
  border: 1.5px solid var(--border); border-radius: 9px; background: #fcfdff;
  font-size: 0.95rem; outline: none; transition: border-color .2s, box-shadow .2s; color: var(--text);
}
input::placeholder { color: #adbccc; }
input[type="text"].otp-input {
  font-size: 1.6rem; letter-spacing: 0.55em; text-align: center; font-weight: 700;
  padding-left: 0.9rem; color: var(--blue-dark);
}
input:focus { border-color: var(--blue-deep); box-shadow: 0 0 0 3px rgba(79, 139, 196, 0.16); }

.pw-wrap { position: relative; }
.pw-wrap input { padding-right: 2.7rem; }
.toggle-pw {
  position: absolute; right: 0.7rem; top: 50%; transform: translateY(-50%);
  -webkit-appearance: none; appearance: none;
  background: none; border: none; outline: none; box-shadow: none;
  cursor: pointer; color: #a7bace; font-size: 1.05rem; line-height: 1; padding: 0;
}
.toggle-pw:hover { color: var(--blue-deep); }
.toggle-pw:focus { outline: none; }
.toggle-pw:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; border-radius: 4px; }

/* ── ボタン ───────────────────────────── */
.btn {
  width: 100%; padding: 0.8rem; border: none; border-radius: 9px;
  background: linear-gradient(90deg, var(--blue-deep), var(--blue-dark));
  color: #fff; font-size: 1rem; font-weight: 700; letter-spacing: 0.02em;
  cursor: pointer; transition: filter .2s, transform .05s; margin-top: 0.4rem;
}
.btn:hover { filter: brightness(1.07); }
.btn:active { transform: translateY(1px); }
.btn:disabled { background: #c5d2df; cursor: not-allowed; filter: none; }
.btn-ghost {
  width: 100%; padding: 0.55rem; border: 1.5px solid var(--border); border-radius: 9px;
  background: #fff; color: var(--muted); font-size: 0.85rem;
  cursor: pointer; margin-top: 0.6rem; transition: background .2s, border-color .2s;
}
.btn-ghost:hover { background: var(--soft); border-color: var(--blue); }

/* ── アラート ─────────────────────────── */
.alerts { margin-bottom: 1.3rem; }
.alert {
  border-radius: 9px; padding: 0.7rem 1rem; font-size: 0.86rem;
  margin-bottom: 0.5rem; display: flex; align-items: flex-start; gap: 0.5rem; line-height: 1.5;
}
.alert-error   { background: var(--err-bg); border: 1px solid #e6b3ac; color: var(--err); }
.alert-success { background: var(--ok-bg);  border: 1px solid #aed7c1; color: var(--ok); }
.alert-info    { background: var(--soft);   border: 1px solid #d3e3f3; color: var(--blue-dark); }

/* ── タイマー / 強度 ──────────────────── */
.timer { font-size: 0.82rem; color: var(--muted); text-align: right; margin-top: 0.4rem; }
.timer.warn { color: var(--err); font-weight: 700; }
.strength-bar { height: 5px; border-radius: 3px; background: var(--border); margin-top: 7px; overflow: hidden; }
.strength-fill { height: 100%; width: 0; border-radius: 3px; transition: width .3s, background .3s; }

/* ── ポリシー ─────────────────────────── */
.policy { margin-top: 1.5rem; background: var(--soft); border: 1px solid #d3e3f3; border-radius: 10px; padding: 0.9rem 1.1rem; }
.policy-title { font-size: 0.8rem; font-weight: 700; color: var(--blue-dark); margin-bottom: 0.5rem; }
.policy ul { padding-left: 1.2rem; }
.policy li  { font-size: 0.8rem; color: #46627e; margin-bottom: 0.25rem; }

/* ── フッター ─────────────────────────── */
.site-footer {
  margin-top: 1.4rem; text-align: center;
  font-size: 0.74rem; color: var(--muted); line-height: 1.7;
}
.site-footer span { display: block; }
.site-footer .fz { font-family: 'Optima', 'Tenor Sans', "Hiragino Kaku Gothic ProN", "Meiryo", system-ui, sans-serif; color: var(--blue-dark); letter-spacing: 0.04em; }