/* ============================================
   auth.css — 로그인/회원가입 전용 스타일
   원본: mia-jay/login.html
   ============================================ */

body.auth-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--secondary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding: 2rem;
}

/* ============================
   LOGIN CARD
   ============================ */
.login-card {
  width: 100%;
  max-width: 1080px;
  min-height: 540px;
  display: flex;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.3);
  position: relative;
  background: var(--brand);
}

/* ============================
   SLIDING WHITE PANEL (Logo)
   ============================ */
.slide-panel {
  position: absolute;
  top: 0;
  left: 0;
  width: 40%;
  height: 100%;
  background: #FFFFFF;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.7s cubic-bezier(0.65, 0, 0.35, 1);
}

.signup-mode .slide-panel {
  transform: translateX(150%);
}

.slide-panel::after {
  content: '';
  position: absolute;
  top: 0;
  right: -60px;
  width: 120px;
  height: 100%;
  background: #FFFFFF;
  transform: skewX(-6deg);
  z-index: -1;
  transition: opacity 0.4s 0.15s;
  opacity: 1;
}

.slide-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: -60px;
  width: 120px;
  height: 100%;
  background: #FFFFFF;
  transform: skewX(-6deg);
  z-index: -1;
  transition: opacity 0.4s 0.15s;
  opacity: 0;
}

.signup-mode .slide-panel::after { opacity: 0; }
.signup-mode .slide-panel::before { opacity: 1; }

.slide-content {
  text-align: center;
  z-index: 2;
}

.slide-content .brand-logo i {
  font-size: 3.5rem;
  color: var(--brand);
  margin-bottom: 1.75rem;
  display: block;
}

.slide-content .brand-title {
  font-size: 1.625rem;
  font-weight: 800;
  color: var(--brand);
  letter-spacing: -0.5px;
  margin-bottom: 0.5rem;
}

.slide-content .brand-subtitle {
  font-size: 0.8125rem;
  color: var(--light);
  font-weight: 400;
  letter-spacing: 0.5px;
}

/* ============================
   FORM AREAS
   ============================ */
.form-area {
  position: absolute;
  top: 0;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.login-area {
  right: 0;
  width: 60%;
  padding: 3rem 3.5rem 3rem 7rem;
  opacity: 1;
  visibility: visible;
}

.signup-mode .login-area {
  opacity: 0;
  visibility: hidden;
}

.signup-area {
  left: 0;
  width: 60%;
  padding: 2.5rem 7rem 2.5rem 3.5rem;
  opacity: 0;
  visibility: hidden;
}

.signup-mode .signup-area {
  opacity: 1;
  visibility: visible;
}

/* ============================
   FORM STYLES
   ============================ */
.form-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 0.375rem;
}

.form-desc {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 1.75rem;
}

.form-group {
  margin-bottom: 1.125rem;
}

.form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 0.4rem;
}

.form-input {
  width: 100%;
  padding: 0.7rem 1rem;
  border: none;
  border-radius: 6px;
  font-size: 0.9375rem;
  color: var(--brand);
  background: #FFFFFF;
  outline: none;
  transition: box-shadow 0.2s;
  font-family: 'Noto Sans KR', 'Manrope', sans-serif;
}

.form-input::placeholder {
  color: var(--light);
  font-weight: 400;
}

.form-input:focus {
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.25);
}

.input-wrap {
  position: relative;
}

.input-wrap .form-input {
  padding-right: 5rem;
}

.input-icon-group {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 6px;
}

.input-icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--light);
  font-size: 0.875rem;
  padding: 2px;
  transition: color 0.2s;
  display: flex;
  align-items: center;
}

.input-icon-btn:hover {
  color: var(--tertiary);
}

.match-icon {
  font-size: 0.8125rem;
  transition: color 0.2s;
}

.match-icon.match { color: #22C55E; }
.match-icon.no-match { color: #EF4444; }

.form-row {
  display: flex;
  gap: 0.75rem;
}

.form-row .form-group {
  flex: 1;
}

.form-options {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  margin-top: 0.25rem;
}

.remember-me {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.7);
  user-select: none;
}

.remember-me input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: #FFFFFF;
  cursor: pointer;
}

.link-btn {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  font-weight: 400;
  transition: color 0.2s;
  cursor: pointer;
  background: none;
  border: none;
  font-family: 'Noto Sans KR', 'Manrope', sans-serif;
}

.link-btn:hover {
  color: #FFFFFF;
  text-decoration: underline;
}

.submit-btn {
  width: 100%;
  padding: 0.8125rem;
  background: var(--tertiary);
  color: #FFFFFF;
  border: none;
  border-radius: 6px;
  font-size: 0.9375rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  font-family: 'Noto Sans KR', 'Manrope', sans-serif;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.submit-btn:hover {
  background: var(--light);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.submit-btn:active {
  transform: translateY(1px);
}

.submit-btn.loading { pointer-events: none; opacity: 0.8; }
.submit-btn .spinner {
  display: none;
  width: 20px; height: 20px;
  border: 2.5px solid rgba(255,255,255,0.3);
  border-top-color: #FFF;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 0 auto;
}
.submit-btn.loading .btn-text { display: none; }
.submit-btn.loading .spinner { display: block; }

.form-footer {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.6875rem;
  color: rgba(255, 255, 255, 0.35);
}

.back-to-login {
  margin-top: 1.25rem;
  text-align: center;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.5);
}

.back-to-login a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-weight: 600;
  cursor: pointer;
}

.back-to-login a:hover {
  color: #FFFFFF;
  text-decoration: underline;
}

/* ============================
   Alert
   ============================ */
.auth-alert {
  padding: 0.625rem 0.875rem;
  border-radius: 6px;
  font-size: 0.8125rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.auth-alert-error {
  background: rgba(220, 38, 38, 0.15);
  color: #FCA5A5;
  border: 1px solid rgba(220, 38, 38, 0.2);
}

.auth-alert-success {
  background: rgba(34, 197, 94, 0.15);
  color: #86EFAC;
  border: 1px solid rgba(34, 197, 94, 0.2);
}

/* ============================
   Responsive
   ============================ */
@media (max-width: 768px) {
  body.auth-body { padding: 1rem; }
  .login-card { flex-direction: column; max-width: 420px; min-height: auto; }
  .slide-panel { position: relative; width: 100%; height: auto; padding: 2.5rem 2rem; }
  .slide-panel::after, .slide-panel::before { display: none; }
  .slide-content .brand-logo i { font-size: 2.5rem; }
  .slide-content .brand-title { font-size: 1.375rem; }
  .form-area { position: relative; width: 100% !important; padding: 2rem !important; }
  .signup-mode .slide-panel { transform: none; }
  .login-area { display: flex; }
  .signup-area { display: none; }
  .signup-mode .login-area { display: none; opacity: 0; }
  .signup-mode .signup-area { display: flex; opacity: 1; visibility: visible; }
  .form-row { flex-direction: column; gap: 0; }
}

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}