:root {
  --color-primary: #2c6781;
  --color-primary-hover: #245568;
  --color-bg-page: #eceff1;
  --color-text: #1a2b33;
  --color-label: #5c6b73;
  --color-placeholder: #9aa7ad;
  --color-border: #d5dde2;
  --color-footnote: #8a969c;
  --shadow-card: 0 12px 40px rgba(44, 103, 129, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
  --radius-card: 12px;
  --radius-input: 8px;
  --font: "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  font-size: 15px;
  color: var(--color-text);
  background: var(--color-bg-page);
  -webkit-font-smoothing: antialiased;
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 24px 16px;
}

.card {
  width: 100%;
  max-width: 420px;
  background: #fff;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 40px 36px 32px;
}

.card__header {
  text-align: center;
  margin-bottom: 28px;
}

.card__title {
  margin: 0 0 8px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.card__subtitle {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-label);
}

.tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.tabs__btn {
  padding: 12px 8px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-label);
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}

.tabs__btn:hover {
  color: var(--color-primary);
}

.tabs__btn--active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tabs__divider {
  height: 1px;
  background: var(--color-border);
  margin-bottom: 24px;
}


.form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.field__label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-label);
}

.field__input {
  width: 100%;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-input);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.field__input::placeholder {
  color: var(--color-placeholder);
}

.field__input:hover {
  border-color: #b8c4cc;
}

.field__input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(44, 103, 129, 0.15);
}

.field__select {
  display: block;
  width: 100%;
  max-width: 100%;
  padding: 10px 36px 10px 12px;
  font-family: inherit;
  font-size: 0.95rem;
  line-height: 1.4;
  color: var(--color-text);
  background-color: #fff;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235c6b73' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-input);
  cursor: pointer;
  appearance: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.field__select:hover {
  border-color: #b8c4cc;
}

.field__select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(44, 103, 129, 0.15);
}

.remember {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: -4px;
  font-size: 0.82rem;
  color: var(--color-label);
  cursor: pointer;
  user-select: none;
}

.remember input {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.btn {
  display: block;
  width: 100%;
  padding: 14px 16px;
  margin-top: 8px;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius-input);
  cursor: pointer;
  transition: background 0.2s, transform 0.05s;
}

.btn--primary {
  color: #fff;
  background: var(--color-primary);
}

.btn--primary:hover {
  background: var(--color-primary-hover);
}

.btn--primary:active {
  transform: scale(0.99);
}

.card__dev-hint {
  max-width: 420px;
  width: 100%;
  margin: 0;
  padding: 0 8px;
  font-size: 0.72rem;
  line-height: 1.55;
  color: var(--color-footnote);
  text-align: center;
}

.card__footnote {
  margin: 24px 0 0;
  text-align: center;
  font-size: 0.75rem;
  line-height: 1.55;
  color: var(--color-footnote);
}

.card__footnote--muted {
  margin-top: 20px;
}

@media (max-width: 380px) {
  .card {
    padding: 28px 20px 24px;
  }

  .card__title {
    font-size: 1.35rem;
  }
}

/* 토스트 메시지 */
.toast {
  position: fixed;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: #1e3a4a;
  color: #fff;
  font-size: 0.93rem;
  font-family: var(--font);
  padding: 13px 28px;
  border-radius: 10px;
  box-shadow: 0 6px 24px rgba(0,0,0,0.18);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  white-space: nowrap;
  z-index: 9999;
}
.toast--show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}
.toast--success {
  background: #1e6e45;
}
.toast--error {
  background: #a32626;
}