/* ================================================================
   account 인증 페이지 — account.css
   색상 토큰은 admin/css/admin.css 와 동일 값(완전 통일)
   ================================================================ */
:root {
  --surface: #f8f9fa;
  --surface-container-lowest: #fff;
  --surface-container-low: #f8f8f8;
  --surface-container: #edeeef;
  --surface-container-high: #e6e8ea;
  --on-surface: #191c1d;
  --on-surface-variant: #424655;
  --outline: #727787;
  --outline-variant: rgba(194,198,216,.15);
  --primary: #0057cd;
  --primary-container: #0d6efd;
  --primary-fixed: #d6e4ff;
  --danger: #dc2626;
  --danger-bg: rgba(220,38,38,.09);
  --success: #059669;
  --success-bg: rgba(5,150,105,.09);
  --warn: #d97706;
  --warn-bg: rgba(217,119,6,.1);
  --input-bg: #f0f2fa;
  --r-sm: .375rem; --r-md: .5rem; --r-lg: .75rem; --r-xl: 1rem; --r-full: 9999px;
  --shadow: 0 10px 40px rgba(25,28,29,.06);
  --shadow-sm: 0 2px 8px rgba(25,28,29,.04);
  --tx: all .22s cubic-bezier(.4,0,.2,1);
  --font: 'Pretendard', -apple-system, sans-serif;
  --grad: linear-gradient(135deg,#0057cd 0%,#0d6efd 100%);
}
[data-bs-theme="dark"] {
  --surface: #111318;
  --surface-container-lowest: #1a1c23;
  --surface-container-low: #1d1f27;
  --surface-container: #21232b;
  --surface-container-high: #282b33;
  --on-surface: #e2e2e9;
  --on-surface-variant: #a9abbe;
  --outline: #737589;
  --outline-variant: rgba(115,117,137,.15);
  --primary: #aac7ff;
  --primary-container: #0057cd;
  --primary-fixed: #0d2d69;
  --danger: #f87171;
  --danger-bg: rgba(248,113,113,.12);
  --success: #34d399;
  --success-bg: rgba(52,211,153,.12);
  --warn: #fbbf24;
  --warn-bg: rgba(251,191,36,.12);
  --input-bg: #1e2235;
  --shadow: 0 20px 60px rgba(0,0,0,.45);
  --grad: linear-gradient(135deg,#2979ff 0%,#448aff 100%);
}

/* ── base ── */
* { box-sizing: border-box; }
body.account-body {
  margin: 0; min-height: 100vh;
  font-family: var(--font); font-size: 15px;
  background: var(--surface); color: var(--on-surface);
  display: flex; align-items: center; justify-content: center;
  padding: 40px 16px; transition: background .3s, color .3s;
}
.account-body a { text-decoration: none; color: inherit; }

/* ── 테마 토글(우측 상단) ── */
.acc-theme-btn {
  position: fixed; top: 18px; right: 18px; z-index: 100;
  width: 40px; height: 40px; border-radius: var(--r-full);
  background: var(--surface-container-lowest); border: 1px solid var(--outline-variant);
  color: var(--on-surface-variant); display: flex; align-items: center; justify-content: center;
  font-size: 17px; cursor: pointer; transition: var(--tx); box-shadow: var(--shadow-sm);
}
.acc-theme-btn:hover { color: var(--primary); border-color: var(--primary); }
.acc-theme-btn .bi-sun-fill { display: none; }
[data-bs-theme="dark"] .acc-theme-btn .bi-moon-stars-fill { display: none; }
[data-bs-theme="dark"] .acc-theme-btn .bi-sun-fill { display: inline; }

/* ── auth card ── */
.auth-card {
  width: 100%; max-width: 440px;
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant); border-radius: var(--r-xl);
  box-shadow: var(--shadow); padding: 40px 40px 36px;
}
.auth-card.wide { max-width: 480px; }
.auth-logo { text-align: center; font-size: 26px; font-weight: 800; color: var(--primary); letter-spacing: -.03em; margin-bottom: 6px; }
.auth-title { text-align: center; font-size: 22px; font-weight: 700; color: var(--on-surface); margin-bottom: 6px; letter-spacing: -.02em; }
.auth-sub { text-align: center; font-size: 14px; color: var(--on-surface-variant); margin-bottom: 26px; line-height: 1.6; }

/* ── fields ── */
.field { margin-bottom: 14px; }
.field-label { display: block; font-size: 13px; font-weight: 600; color: var(--on-surface-variant); margin-bottom: 6px; }
.field-label .req { color: var(--danger); margin-left: 2px; }
.field-row {
  display: flex; align-items: center; background: var(--input-bg);
  border: 1.5px solid transparent; border-radius: var(--r-md); overflow: hidden; transition: var(--tx);
}
.field-row:focus-within { border-color: var(--primary); background: var(--surface-container-lowest); box-shadow: 0 0 0 3px var(--primary-fixed); }
.field-row.error { border-color: var(--danger); box-shadow: 0 0 0 3px var(--danger-bg); }
.field-icon { padding: 0 12px; color: var(--outline); font-size: 16px; flex-shrink: 0; }
.field-input {
  flex: 1; border: none; background: transparent; color: var(--on-surface);
  font-size: 15px; font-family: var(--font); padding: 13px 0; outline: none; min-width: 0;
}
.field-input:focus { border: none; box-shadow: none; outline: none; }
.field-input::placeholder { color: var(--outline); }
.field-btn { padding: 0 12px; border: none; background: transparent; color: var(--outline); font-size: 16px; cursor: pointer; flex-shrink: 0; }
.field-btn:hover { color: var(--on-surface-variant); }
.field-hint { font-size: 12px; margin-top: 5px; padding-left: 4px; color: var(--outline); }
.field-hint.err { color: var(--danger); }
.field-hint.ok { color: var(--success); }

/* ── strength bar ── */
.strength-wrap { margin-top: 6px; }
.strength-bar { display: flex; gap: 4px; margin-bottom: 4px; }
.str-seg { flex: 1; height: 4px; border-radius: 2px; background: var(--surface-container-high); transition: background .3s; }
.str-seg.w { background: var(--danger); }
.str-seg.f { background: var(--warn); }
.str-seg.g { background: var(--primary-container); }
.str-seg.s { background: var(--success); }
.str-label { font-size: 12px; color: var(--outline); }

/* ── checkbox ── */
.check-row { display: flex; align-items: center; gap: 8px; }
.check-row input[type=checkbox] { width: 18px; height: 18px; accent-color: var(--primary); cursor: pointer; }
.check-row label { font-size: 14px; color: var(--on-surface-variant); cursor: pointer; }

/* ── buttons ── */
.btn-primary-acc {
  width: 100%; padding: 14px; background: var(--grad); color: #fff; border: none;
  border-radius: var(--r-md); font-size: 16px; font-weight: 700; cursor: pointer;
  transition: var(--tx); font-family: var(--font);
}
.btn-primary-acc:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,87,205,.35); }
.btn-primary-acc:active { transform: translateY(0); }
.btn-secondary-acc {
  width: 100%; padding: 12px; background: transparent; border: 1.5px solid var(--outline-variant);
  color: var(--on-surface-variant); border-radius: var(--r-md); font-size: 15px; cursor: pointer;
  transition: var(--tx); font-family: var(--font);
}
.btn-secondary-acc:hover { border-color: var(--primary); color: var(--primary); }

/* ── divider / footer ── */
.acc-divider { height: 1px; background: var(--outline-variant); margin: 22px 0; border: 0; }
.auth-footer { text-align: center; margin-top: 18px; font-size: 14px; color: var(--on-surface-variant); }
.auth-footer a { color: var(--primary); font-weight: 600; }
.auth-footer a:hover { opacity: .8; }

/* ── alert ── */
.alert-acc { display: flex; align-items: flex-start; gap: 10px; padding: 12px 14px; border-radius: var(--r-sm); font-size: 13.5px; margin-bottom: 18px; line-height: 1.5; }
.alert-acc.err { background: var(--danger-bg); color: var(--danger); }
.alert-acc.ok { background: var(--success-bg); color: var(--success); }
.alert-acc.info { background: var(--primary-fixed); color: var(--primary); }
.alert-acc i { flex-shrink: 0; font-size: 15px; margin-top: 1px; }

/* ── helptext(비밀번호 규칙) ── */
.acc-helptext { font-size: 12px; color: var(--outline); margin-top: 6px; }
.acc-helptext ul { list-style: none; padding-left: 0; margin: 4px 0 0; }
.acc-helptext li { margin-top: 3px; }
.acc-helptext li:before { content: "※ "; }

@media (max-width: 480px) {
  .auth-card { padding: 28px 22px; }
}