:root {
  --bg: #0b1020;
  --card: #11172b;
  --text: #e8eefc;
  --muted: #9bb0d3;
  --primary: #4c8dff;
  --primary-700: #3a6ed6;
  --border: #223055;
  --danger: #ff6b6b;
}

* { box-sizing: border-box; }

.sna_container {
  width: 100%;
  max-width: 520px;
}

.sna_card {
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  padding: 20px;
  backdrop-filter: blur(6px);
}

.sna_header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.sna_title {
  font-size: 18px;
  font-weight: 600;
  margin: 0;
}

.sna_desc {
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 20px 0;
}

.sna_row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

.sna_field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sna_label {
  font-size: 13px;
  color: var(--muted);
}

.sna_input {
  width: 100%;
  padding: 14px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0d1428;
  color: var(--text);
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}

.sna_input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(76, 141, 255, 0.15);
}

.sna_btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 16px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid var(--primary);
  background: linear-gradient(180deg, rgba(76,141,255,0.18), rgba(76,141,255,0.10));
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
  transition: background .2s, transform .05s ease;
  min-width: 120px;
  user-select: none;
}
.sna_btn:hover { background: linear-gradient(180deg, rgba(76,141,255,0.24), rgba(76,141,255,0.14)); }
.sna_btn:active { transform: translateY(1px); }
.sna_btn:disabled {
  border-color: #2a3a66;
  background: #0f1730;
  color: #7d8fb6;
  cursor: not-allowed;
}

.sna_timer {
  font-size: 12px;
  color: var(--muted);
  min-height: 18px;
}

.sna_timer--danger { color: var(--danger); }

.sna_hint {
  margin-top: 8px;
  font-size: 12px;
  color: var(--muted);
}

.sna_code-actions {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}

.sna_btn-secondary {
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.05);
}

.sna_btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* 팝업 오버레이 */
.sna_modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  padding: 20px;
}

.sna_modal-overlay.sna_is-open {
  opacity: 1;
  visibility: visible;
}

/* 팝업 컨테이너 */
.sna_modal-container {
  width: 100%;
  max-width: 420px;
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03));
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(12px);
  transform: scale(0.95) translateY(10px);
  transition: transform 0.3s ease;
  max-height: 90vh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.sna_modal-overlay.sna_is-open .sna_modal-container {
  transform: scale(1) translateY(0);
}

/* 팝업 헤더 */
.sna_modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.sna_modal-title {
  font-size: 20px;
  font-weight: 600;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
}

.sna_modal-close {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, color 0.2s;
  padding: 0;
}

.sna_modal-close:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
}

.sna_modal-close:active {
  transform: scale(0.95);
}

/* 팝업 본문 */
.sna_modal-body {
  padding: 24px;
}

.sna_modal-desc {
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 24px 0;
  line-height: 1.6;
}

.sna_modal-field {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sna_modal-field .sna_label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
}

.sna_modal-field .sna_input {
  width: 100%;
  padding: 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #0d1428;
  color: var(--text);
  font-size: 16px;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
  -webkit-appearance: none;
  appearance: none;
}

.sna_modal-field .sna_input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(76, 141, 255, 0.15);
}

.sna_modal-timer {
  font-size: 13px;
  color: var(--muted);
  min-height: 20px;
  margin-top: 4px;
}

.sna_modal-timer--danger {
  color: var(--danger);
  font-weight: 500;
}

.sna_modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 24px;
}

.sna_modal-btn {
  flex: 1;
  height: 48px;
  border-radius: 12px;
  border: 1px solid var(--primary);
  background: linear-gradient(180deg, rgba(76,141,255,0.20), rgba(76,141,255,0.12));
  color: var(--text);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: background .2s, transform .05s ease;
  user-select: none;
}

.sna_modal-btn:hover {
  background: linear-gradient(180deg, rgba(76,141,255,0.28), rgba(76,141,255,0.18));
}

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

.sna_modal-btn:disabled {
  border-color: #2a3a66;
  background: #0f1730;
  color: #7d8fb6;
  cursor: not-allowed;
}

.sna_modal-btn-secondary {
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.05);
}

.sna_modal-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

@media (max-width: 480px) {
  .sna_row { grid-template-columns: 1fr; }
  .sna_btn { width: 100%; height: 48px; }

  .sna_code-actions {
    flex-direction: column;
  }

  .sna_modal-overlay {
    padding: 0;
  }

  .sna_modal-container {
    max-width: 100%;
    border-radius: 20px 20px 0 0;
    max-height: 85vh;
    margin-top: auto;
  }

  .sna_modal-header {
    padding: 18px 20px;
  }

  .sna_modal-title {
    font-size: 18px;
  }

  .sna_modal-body {
    padding: 20px;
  }

  .sna_modal-actions {
    flex-direction: column;
  }

  .sna_modal-btn {
    width: 100%;
    padding: 10px 0;
  }
}