/* ---------- 로그인 화면: 왼쪽 브랜드 이미지 + 오른쪽 로그인 ---------- */
.auth-body {
  --ink: #0b1730;
  --gold: #e3b45a;
  --brand: #2563eb;
  --brand-2: #1d4ed8;
  background: #f4f6fb;
  color: #0f172a;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}
.auth-shell { min-height: 100%; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(440px, 1fr); }

/* 브랜드 이미지 영역 */
.auth-hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background: var(--ink) url('/assets/img/login-hero.jpg') center right / cover no-repeat;
}
.auth-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(8, 18, 40, .92) 0%, rgba(8, 18, 40, .72) 38%, rgba(8, 18, 40, .18) 75%, rgba(8, 18, 40, .05) 100%),
    radial-gradient(60% 50% at 0% 100%, rgba(37, 99, 235, .28), transparent 70%);
}
.auth-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(90deg, #000 0%, transparent 60%);
}
.auth-hero-inner { position: relative; z-index: 1; height: 100%; min-height: 100vh; display: flex; flex-direction: column; justify-content: space-between; padding: 48px 56px; }

.auth-mark { font-size: 17px; font-weight: 700; letter-spacing: -.2px; color: rgba(255,255,255,.92); }

.auth-copy { max-width: 560px; animation: authRise .8s cubic-bezier(.2, .7, .2, 1) both .1s; }
.auth-copy h2 { margin: 0; font-size: clamp(30px, 3.2vw, 46px); font-weight: 800; line-height: 1.22; letter-spacing: -1.2px; }
.auth-lead { margin: 20px 0 0; font-size: 15px; line-height: 1.75; color: rgba(255,255,255,.72); }
.auth-foot { margin: 0; font-size: 12px; color: rgba(255,255,255,.45); letter-spacing: .2px; }

/* 로그인 영역 */
.auth-panel {
  position: relative;
  display: grid; place-items: center;
  padding: 48px 32px;
  background:
    radial-gradient(80% 60% at 100% 0%, rgba(37, 99, 235, .07), transparent 60%),
    radial-gradient(70% 50% at 0% 100%, rgba(227, 180, 90, .08), transparent 60%),
    #fff;
}
.auth-card { width: 100%; max-width: 380px; animation: authRise .6s cubic-bezier(.2, .7, .2, 1) both; }
.auth-card.shake { animation: authShake .4s ease; }
.auth-card-mark { display: none; margin-bottom: 24px; font-weight: 700; font-size: 15px; color: #334155; }
.auth-title { margin: 0; font-size: 30px; font-weight: 800; letter-spacing: -.8px; }
.auth-sub { margin: 8px 0 32px; color: #64748b; font-size: 14px; }

.auth-form { display: grid; gap: 14px; }
.field { position: relative; }
.field input {
  width: 100%; height: 56px;
  padding: 22px 46px 8px 46px;
  border: 1.5px solid #e2e8f0; border-radius: 12px;
  background: #f8fafc; font-size: 15px; color: #0f172a;
  outline: none; transition: border-color .15s, background .15s, box-shadow .15s;
}
.auth-form#bootstrapForm .field input { padding-left: 16px; }
.field input:hover { border-color: #cbd5e1; }
.field input:focus { border-color: var(--brand); background: #fff; box-shadow: 0 0 0 4px rgba(37, 99, 235, .12); }
.field label {
  position: absolute; left: 46px; top: 50%; transform: translateY(-50%);
  font-size: 15px; color: #94a3b8; pointer-events: none;
  transition: top .15s, font-size .15s, color .15s;
}
.auth-form#bootstrapForm .field label { left: 16px; }
.field input:focus + label, .field input:not(:placeholder-shown) + label { top: 17px; font-size: 11.5px; font-weight: 600; color: #64748b; }
.field input:focus + label { color: var(--brand); }
.field-icon { position: absolute; left: 15px; top: 50%; width: 20px; height: 20px; transform: translateY(-50%); color: #94a3b8; pointer-events: none; transition: color .15s; }
.field input:focus ~ .field-icon { color: var(--brand); }
.field-toggle {
  position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  width: 38px; height: 38px; border: 0; border-radius: 9px; background: transparent;
  color: #94a3b8; cursor: pointer; display: grid; place-items: center;
}
.field-toggle:hover { background: #eef2f7; color: #475569; }
.field-toggle.on { color: var(--brand); }
.field-toggle svg { width: 20px; height: 20px; }

.auth-caps { margin: -4px 0 0; font-size: 12.5px; color: #b45309; }
.auth-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin: 2px 0 6px; font-size: 13px; }
.auth-check { display: inline-flex; align-items: center; gap: 8px; color: #334155; cursor: pointer; user-select: none; }
.auth-check input { width: 16px; height: 16px; margin: 0; accent-color: var(--brand); }
.auth-help { color: #94a3b8; font-size: 12.5px; }

.auth-submit {
  position: relative; height: 54px; border: 0; border-radius: 12px; cursor: pointer;
  font-size: 16px; font-weight: 700; color: #fff; letter-spacing: .2px;
  background: linear-gradient(135deg, #2563eb 0%, #1e3a8a 100%);
  box-shadow: 0 10px 24px rgba(37, 99, 235, .3), inset 0 1px 0 rgba(255,255,255,.18);
  transition: transform .12s, box-shadow .15s, filter .15s;
  display: flex; align-items: center; justify-content: center; gap: 10px;
}
.auth-submit:hover { filter: brightness(1.07); box-shadow: 0 14px 30px rgba(37, 99, 235, .38), inset 0 1px 0 rgba(255,255,255,.18); }
.auth-submit:active { transform: translateY(1px); }
.auth-submit:disabled { cursor: default; filter: saturate(.7); }
.auth-spinner { display: none; width: 18px; height: 18px; border-radius: 50%; border: 2.5px solid rgba(255,255,255,.35); border-top-color: #fff; animation: authSpin .7s linear infinite; }
.auth-submit.loading .auth-spinner { display: inline-block; }

.auth-info { margin: 0 0 4px; padding: 12px 14px; border-radius: 10px; background: #eff6ff; color: #1e40af; font-size: 13px; line-height: 1.6; }
.auth-error { margin: 16px 0 0; padding: 11px 14px; border-radius: 10px; background: #fef2f2; border: 1px solid #fecaca; color: #b91c1c; font-size: 13.5px; }
.auth-secure { display: flex; gap: 10px; align-items: flex-start; margin-top: 32px; padding-top: 22px; border-top: 1px solid #eef2f7; color: #94a3b8; font-size: 12.5px; line-height: 1.6; }
.auth-secure svg { width: 18px; height: 18px; flex: none; margin-top: 1px; color: #64748b; }

@keyframes authRise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes authShake { 0%, 100% { transform: none; } 20%, 60% { transform: translateX(-7px); } 40%, 80% { transform: translateX(7px); } }
@keyframes authSpin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .auth-copy, .auth-card, .auth-card.shake { animation: none; } }

/* 태블릿·모바일: 이미지를 배경으로 깔고 로그인 카드를 위에 띄운다 */
@media (max-width: 960px) {
  .auth-shell { grid-template-columns: minmax(0, 1fr); }
  .auth-hero { position: fixed; inset: 0; }
  .auth-hero-inner { display: none; }
  .auth-panel { min-height: 100vh; background: transparent; padding: 24px 16px; z-index: 1; }
  .auth-card {
    padding: 32px 26px; border-radius: 20px;
    background: rgba(255,255,255,.94);
    backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
    box-shadow: 0 30px 60px rgba(2, 6, 23, .45);
  }
  .auth-card-mark { display: block; }
  .auth-title { font-size: 26px; }
  .auth-sub { margin-bottom: 26px; }
  .field input { font-size: 16px; }
}