/* ============================================================
   인증(로그인/회원가입/이메일확인) 공통 스타일
   — preview 디자인 시스템(colors_and_type.css 토큰) 기반.
   preview_nav.css 가 토큰을 import 하므로 함께 로드되어야 한다.
   ============================================================ */

.auth-shell {
  position: relative;
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 56px 20px 72px;
  background: var(--w-cool-99);
  overflow: hidden;
}
.auth-shell::before {
  content: ""; position: absolute; top: -240px; right: -180px;
  width: 640px; height: 640px;
  background: radial-gradient(closest-side, rgba(79,55,255,0.14), transparent 70%);
  pointer-events: none;
}
.auth-shell::after {
  content: ""; position: absolute; bottom: -260px; left: -200px;
  width: 560px; height: 560px;
  background: radial-gradient(closest-side, rgba(255,43,176,0.10), transparent 70%);
  pointer-events: none;
}

.auth-card {
  position: relative; z-index: 1;
  width: 100%; max-width: 460px;
  background: white;
  border: 1px solid var(--line-neutral-subtle);
  border-radius: 24px;
  box-shadow: var(--shadow-emphasize);
  padding: 44px 40px 36px;
}
.auth-card-wide { max-width: 500px; }

.auth-head { text-align: center; margin-bottom: 28px; }
.auth-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  height: 28px; padding: 0 12px;
  border-radius: 999px;
  background: var(--bg-accent-subtle);
  color: var(--w-blue-45);
  font: 600 12px/1 var(--font-sans);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.auth-eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.auth-title {
  margin: 18px 0 0;
  font: 800 30px/1.2 var(--font-sans);
  letter-spacing: -0.028em;
  color: var(--fg-primary);
}
.auth-sub {
  margin: 10px 0 0;
  font: 500 15px/1.6 var(--font-sans);
  letter-spacing: -0.005em;
  color: var(--fg-neutral-muted);
}

/* 무료체험 배지 */
.auth-trial-badge {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 14px;
  height: 30px; padding: 0 14px;
  border-radius: 999px;
  background: var(--bg-energy-subtle);
  color: var(--w-violet-45);
  font: 700 12.5px/1 var(--font-sans);
  letter-spacing: -0.005em;
}

/* 오류 배너 */
.auth-error {
  display: flex; align-items: flex-start; gap: 10px;
  margin-bottom: 20px;
  padding: 12px 16px;
  border: 1px solid rgba(255,66,66,0.28);
  border-radius: 12px;
  background: var(--bg-negative-subtle);
  font: 500 13.5px/1.55 var(--font-sans);
  letter-spacing: -0.005em;
  color: var(--w-red-40);
}
.auth-error a { color: var(--w-red-50); font-weight: 700; text-decoration: underline; }

/* 입력 필드 */
.auth-field { margin-bottom: 16px; }
.auth-field label {
  display: block;
  margin: 0 0 8px;
  font: 600 13.5px/1.4 var(--font-sans);
  letter-spacing: -0.005em;
  color: var(--fg-neutral-subtle);
}
.auth-label-row {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 8px;
}
.auth-label-row label { margin: 0; }
.auth-link-muted {
  font: 500 12.5px/1 var(--font-sans);
  color: var(--fg-neutral-muted);
  text-decoration: none;
}
.auth-link-muted:hover { color: var(--w-blue-50); text-decoration: none; }

.auth-input {
  width: 100%; height: 50px;
  padding: 0 16px;
  border: 1px solid var(--line-neutral);
  border-radius: 12px;
  background: white;
  font: 500 15px/1.4 var(--font-sans);
  letter-spacing: -0.005em;
  color: var(--fg-primary);
  transition: border-color .15s ease, box-shadow .15s ease;
  -webkit-appearance: none; appearance: none;
}
.auth-input::placeholder { color: var(--fg-neutral-disable); }
.auth-input:focus {
  outline: none;
  border-color: var(--w-blue-50);
  box-shadow: 0 0 0 4px rgba(79,55,255,0.12);
}
.auth-input.is-invalid {
  border-color: var(--w-red-60);
  box-shadow: 0 0 0 4px rgba(255,66,66,0.10);
}

/* 필드 하단 보조/상태 텍스트 */
.auth-hint {
  margin: 7px 2px 0;
  font: 500 12.5px/1.5 var(--font-sans);
  letter-spacing: -0.005em;
  color: var(--fg-neutral-muted);
}
.auth-hint.ok { color: var(--w-green-50); }
.auth-hint.bad { color: var(--w-red-50); }
.auth-hint.bad a { color: var(--w-red-50); font-weight: 700; text-decoration: underline; }
.auth-hint:empty { display: none; }

.auth-password-wrap { position: relative; }
.auth-password-wrap .auth-input { padding-right: 48px; }
.auth-eye {
  position: absolute; top: 50%; right: 10px; transform: translateY(-50%);
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px;
  border: 0; border-radius: 999px;
  background: transparent;
  color: var(--fg-neutral-muted);
  cursor: pointer;
  outline: none;
}
.auth-eye:hover, .auth-eye:focus { color: var(--fg-primary); background: var(--bg-neutral); }
.auth-eye i { pointer-events: none; }

/* 약관 동의 박스 */
.auth-terms {
  margin: 20px 0 0;
  border: 1px solid var(--line-neutral);
  border-radius: 14px;
  overflow: hidden;
}
.auth-terms-row {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px;
  cursor: pointer;
  -webkit-user-select: none; user-select: none;
}
.auth-terms-row.all {
  background: var(--w-cool-98);
  border-bottom: 1px solid var(--line-neutral-subtle);
  font-weight: 700;
}
.auth-terms-row input[type="checkbox"] {
  width: 18px; height: 18px; margin: 0;
  flex: 0 0 18px;
  accent-color: var(--w-blue-50);
  cursor: pointer;
}
.auth-terms-row .t {
  flex: 1;
  font: 500 13.5px/1.5 var(--font-sans);
  letter-spacing: -0.005em;
  color: var(--fg-neutral-subtle);
}
.auth-terms-row.all .t { font-weight: 700; color: var(--fg-primary); }
.auth-terms-row a.view {
  flex: 0 0 auto;
  font: 500 12px/1 var(--font-sans);
  color: var(--fg-neutral-muted);
  text-decoration: underline;
}
.auth-terms-row a.view:hover { color: var(--w-blue-50); }
.auth-terms.is-invalid { border-color: var(--w-red-60); }

/* 메인 버튼 */
.auth-submit {
  width: 100%; height: 52px;
  margin-top: 8px;
  border: none; border-radius: 12px;
  background: var(--w-blue-50);
  color: white;
  font: 700 16px/1 var(--font-sans);
  letter-spacing: -0.012em;
  cursor: pointer;
  transition: background .15s ease, transform .15s ease, box-shadow .15s ease;
}
.auth-submit:hover {
  background: var(--w-blue-45);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(79,55,255,0.28);
}
.auth-submit:active { transform: translateY(0); box-shadow: none; }
.auth-submit:disabled { opacity: 0.55; cursor: default; transform: none; box-shadow: none; }

/* 구분선 */
.auth-divider {
  display: flex; align-items: center; gap: 14px;
  margin: 28px 0 18px;
}
.auth-divider::before, .auth-divider::after {
  content: ""; flex: 1; height: 1px; background: var(--line-neutral-subtle);
}
.auth-divider span {
  font: 500 12.5px/1 var(--font-sans);
  letter-spacing: -0.005em;
  color: var(--fg-neutral-muted);
  white-space: nowrap;
}

/* 소셜 버튼 */
.auth-social { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.auth-social.auth-social-stack { grid-template-columns: 1fr; }
.auth-social-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 46px;
  border: 1px solid var(--line-neutral);
  border-radius: 12px;
  background: white;
  font: 600 14px/1 var(--font-sans);
  letter-spacing: -0.005em;
  color: var(--fg-neutral-subtle);
  text-decoration: none;
  transition: background .15s ease, border-color .15s ease, color .15s ease, transform .15s ease;
}
.auth-social-btn:hover {
  background: var(--w-cool-98);
  border-color: var(--line-neutral-strong);
  color: var(--fg-primary);
  text-decoration: none;
  transform: translateY(-1px);
}
.auth-social-btn img { width: 18px; height: 18px; object-fit: contain; display: block; }

/* 소셜 하단 동의 간주 문구 */
.auth-social-note {
  margin: 12px 2px 0;
  text-align: center;
  font: 500 12px/1.6 var(--font-sans);
  letter-spacing: -0.005em;
  color: var(--fg-neutral-muted);
}
.auth-social-note a { color: var(--fg-neutral-subtle); text-decoration: underline; }
.auth-social-note a:hover { color: var(--w-blue-50); }

/* 하단 링크 */
.auth-foot {
  margin: 24px 0 0;
  text-align: center;
  font: 500 13.5px/1.5 var(--font-sans);
  color: var(--fg-neutral-muted);
}
.auth-foot a { color: var(--w-blue-50); font-weight: 600; text-decoration: none; }
.auth-foot a:hover { color: var(--w-blue-45); text-decoration: underline; }

/* 이메일 확인(emailConfirm) 화면 */
.auth-mail-icon {
  width: 72px; height: 72px;
  margin: 0 auto 20px;
  border-radius: 20px;
  background: var(--bg-accent-subtle);
  color: var(--w-blue-50);
  display: grid; place-items: center;
}
.auth-mail-email {
  display: inline-block;
  margin: 6px 0 0;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--w-cool-98);
  border: 1px solid var(--line-neutral-subtle);
  font: 600 14px/1.4 var(--font-sans);
  color: var(--fg-primary);
  word-break: break-all;
}
.auth-btn-secondary {
  width: 100%; height: 48px;
  margin-top: 10px;
  border: 1px solid var(--line-neutral);
  border-radius: 12px;
  background: white;
  color: var(--fg-neutral-subtle);
  font: 600 14.5px/1 var(--font-sans);
  letter-spacing: -0.005em;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease, color .15s ease;
}
.auth-btn-secondary:hover {
  background: var(--w-cool-98);
  border-color: var(--line-neutral-strong);
  color: var(--fg-primary);
}

@media (max-width: 520px) {
  .auth-shell { align-items: flex-start; padding: 32px 16px 56px; }
  .auth-card { padding: 32px 22px 28px; border-radius: 20px; }
  .auth-title { font-size: 26px; }
}
@media (max-width: 380px) {
  .auth-social { grid-template-columns: 1fr; }
}