:root {
  --toss-blue: #3182f6;
  --toss-blue-hover: #1b64da;
  --toss-blue-light: #e8f3ff;
  --toss-bg: #f9fafb;
  --toss-card: #ffffff;
  --toss-text: #191f28;
  --toss-text-sec: #8b95a1;
  --toss-text-light: #b0b8c1;
  --toss-border: #f2f4f6;
  --toss-red: #f04452;
  --toss-green: #00c853;
  --kakao-yellow: #FEE500;
  --kakao-text: #000000;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, 'Helvetica Neue', 'Segoe UI', 'Apple SD Gothic Neo', 'Noto Sans KR', 'Malgun Gothic', sans-serif;
}

body {
  background-color: var(--toss-bg);
  color: var(--toss-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.app-container {
  max-width: 500px;
  margin: 0 auto;
  min-height: 100vh;
  background-color: var(--toss-bg);
  display: flex;
  flex-direction: column;
}

.app-header {
  padding: 24px 20px;
  text-align: center;
  background-color: var(--toss-card);
  border-bottom: 1px solid var(--toss-border);
}


.app-header h1 {
  font-size: 22px;
  font-weight: 700;
  color: var(--toss-text);
  margin-bottom: 4px;
}

.subtitle {
  font-size: 14px;
  color: var(--toss-text-sec);
}

main {
  flex: 1;
  padding: 20px;
}

.screen {
  display: none;
  animation: fadeIn 0.3s ease-in-out;
}

.screen.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.card {
  background-color: var(--toss-card);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  margin-bottom: 20px;
}

.card-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.card-desc {
  font-size: 14px;
  color: var(--toss-text-sec);
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--toss-text-sec);
  margin-bottom: 8px;
}

input[type="text"],
input[type="tel"],
input[type="url"],
textarea {
  width: 100%;
  padding: 14px 16px;
  font-size: 16px;
  border: 1px solid var(--toss-border);
  border-radius: 12px;
  background-color: var(--toss-bg);
  transition: border-color 0.2s, background-color 0.2s;
  color: var(--toss-text);
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--toss-blue);
  background-color: var(--toss-card);
}

textarea {
  resize: vertical;
  background-color: var(--toss-border);
  border-color: transparent;
  color: var(--toss-text-sec);
  font-size: 14px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s, transform 0.1s;
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-block {
  width: 100%;
  margin-bottom: 12px;
}

.btn-block:last-child {
  margin-bottom: 0;
}

.btn-primary {
  background-color: var(--toss-blue);
  color: white;
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--toss-blue-hover);
}

.btn-secondary {
  background-color: var(--toss-blue-light);
  color: var(--toss-blue);
}

.btn-kakao {
  background-color: var(--kakao-yellow);
  color: var(--kakao-text);
}

.btn-text {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.8);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  padding: 4px 8px;
}

.btn-text:hover {
  color: white;
}

/* FP Info Card */
.fp-info-card {
  background: linear-gradient(135deg, var(--toss-blue), var(--toss-blue-hover));
  border-radius: 16px;
  color: white;
  margin-bottom: 24px;
  box-shadow: 0 4px 12px rgba(49, 130, 246, 0.2);
  overflow: hidden;
}

.fp-info-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.fp-info-header h3 {
  font-size: 16px;
  font-weight: 600;
}

.fp-info-body {
  padding: 20px;
}

.info-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 12px;
}

.info-row:last-child {
  margin-bottom: 0;
}

.info-label {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}

.info-value {
  font-weight: 600;
  font-size: 15px;
}

.id-value {
  font-family: monospace;
  background-color: rgba(255, 255, 255, 0.2);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
}

.deployment-url-group {
  background-color: var(--toss-border);
  padding: 16px;
  border-radius: 12px;
  margin-bottom: 24px;
}

.deployment-url-group input {
  background-color: var(--toss-card);
}

.action-buttons {
  margin-top: 24px;
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 90%;
  max-width: 400px;
}

.toast {
  background-color: rgba(25, 31, 40, 0.9);
  color: white;
  padding: 12px 24px;
  border-radius: 24px;
  font-size: 14px;
  margin-top: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  animation: toastFadeIn 0.3s, toastFadeOut 0.3s 2.7s forwards;
}

@keyframes toastFadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes toastFadeOut {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(-20px); }
}