/* Landing Page Components */

/* Button Components */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-weight: var(--font-medium);
  text-decoration: none;
  border-radius: 0.5rem;
  border: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-in-out);
  position: relative;
  overflow: hidden;
  
  /* 크로스 브라우저 폰트 렌더링 일관성 */
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.btn-primary {
  background: linear-gradient(135deg, var(--orange-500), var(--orange-600));
  color: var(--white);
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.25);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--orange-600), var(--orange-700));
  box-shadow: 0 8px 20px rgba(249, 115, 22, 0.35);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--white);
  color: var(--orange-600);
  border: 2px solid var(--orange-500);
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.15);
}

.btn-secondary:hover {
  background: var(--orange-50);
  border-color: var(--orange-600);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--orange-600);
  border: 2px solid var(--orange-500);
}

.btn-outline:hover {
  background: var(--orange-500);
  color: var(--white);
}

.btn-ghost {
  background: transparent;
  color: var(--gray-700);
  border: none;
  box-shadow: none;
}

.btn-ghost:hover {
  background: var(--gray-100);
  color: var(--orange-600);
}

.btn-large {
  padding: 1.25rem 2.5rem;
  font-size: 1.125rem;
}

.btn-small {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Card Components */
.card {
  background: var(--white);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  border: 1px solid var(--gray-200);
  transition: all var(--duration-normal) var(--ease-in-out);
}

.card:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

.card-header {
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--gray-200);
}

.card-title {
  font-size: 1.25rem;
  font-weight: var(--font-semibold);
  color: var(--gray-900);
  margin: 0;
}

.card-subtitle {
  font-size: 0.875rem;
  color: var(--gray-600);
  margin: 0.25rem 0 0;
}

.card-body {
  color: var(--gray-700);
  line-height: 1.6;
}

.card-footer {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--gray-200);
}

.card-elevated {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.card-bordered {
  border: 2px solid var(--orange-200);
}

.card-highlight {
  border: 2px solid var(--orange-500);
  box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.1);
}

/* Badge Components */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: var(--font-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 9999px;
  border: 1px solid transparent;
}

.badge-primary {
  background: var(--orange-100);
  color: var(--orange-700);
  border-color: var(--orange-200);
}

.badge-secondary {
  background: var(--gray-100);
  color: var(--gray-700);
  border-color: var(--gray-200);
}

.badge-success {
  background: #dcfce7;
  color: #166534;
  border-color: #bbf7d0;
}

.badge-warning {
  background: #fef3c7;
  color: #92400e;
  border-color: #fde68a;
}

.badge-error {
  background: #fee2e2;
  color: #991b1b;
  border-color: #fecaca;
}

.badge-large {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.badge-dot {
  position: relative;
  padding-left: 1.5rem;
}

.badge-dot::before {
  content: '';
  position: absolute;
  left: 0.5rem;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* Progress Components */
.progress {
  width: 100%;
  height: 8px;
  background: var(--gray-200);
  border-radius: 9999px;
  overflow: hidden;
  position: relative;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--orange-400), var(--orange-500));
  border-radius: 9999px;
  transition: width var(--duration-slow) var(--ease-out);
  position: relative;
}

.progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  animation: progress-shine 2s ease-in-out infinite;
}

@keyframes progress-shine {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.progress-circular {
  width: 80px;
  height: 80px;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.progress-circular svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.progress-circular-bg {
  fill: none;
  stroke: var(--gray-200);
  stroke-width: 4;
}

.progress-circular-bar {
  fill: none;
  stroke: var(--orange-500);
  stroke-width: 4;
  stroke-linecap: round;
  transition: stroke-dashoffset var(--duration-slow) var(--ease-out);
}

.progress-text {
  position: relative;
  z-index: 10;
  font-weight: var(--font-semibold);
  font-size: 0.875rem;
  color: var(--gray-700);
}

/* Alert Components */
.alert {
  padding: 1rem 1.5rem;
  border-radius: 0.75rem;
  border: 1px solid transparent;
  margin-bottom: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.alert-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 0.125rem;
}

.alert-content {
  flex: 1;
}

.alert-title {
  font-weight: var(--font-semibold);
  margin: 0 0 0.25rem;
  font-size: 0.875rem;
}

.alert-description {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.5;
}

.alert-info {
  background: #eff6ff;
  border-color: #bfdbfe;
  color: #1e40af;
}

.alert-success {
  background: #f0fdf4;
  border-color: #bbf7d0;
  color: #166534;
}

.alert-warning {
  background: #fffbeb;
  border-color: #fde68a;
  color: #92400e;
}

.alert-error {
  background: #fef2f2;
  border-color: #fecaca;
  color: #991b1b;
}

/* Modal Components */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  animation: modal-overlay-in var(--duration-normal) var(--ease-out) forwards;
}

@keyframes modal-overlay-in {
  to { opacity: 1; }
}

.modal-overlay.closing {
  animation: modal-overlay-out var(--duration-normal) var(--ease-out) forwards;
}

@keyframes modal-overlay-out {
  to { opacity: 0; }
}

.modal {
  background: var(--white);
  border-radius: 1rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow: auto;
  transform: scale(0.9) translateY(20px);
  animation: modal-in var(--duration-normal) var(--ease-out) forwards;
}

@keyframes modal-in {
  to {
    transform: scale(1) translateY(0);
  }
}

.modal.closing {
  animation: modal-out var(--duration-normal) var(--ease-out) forwards;
}

@keyframes modal-out {
  to {
    transform: scale(0.9) translateY(20px);
  }
}

.modal-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: var(--font-semibold);
  color: var(--gray-900);
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 0.375rem;
  color: var(--gray-500);
  transition: all var(--duration-fast) var(--ease-in-out);
}

.modal-close:hover {
  background: var(--gray-100);
  color: var(--gray-700);
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1.5rem;
  border-top: 1px solid var(--gray-200);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Tooltip Components */
.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip-content {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-bottom: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: var(--gray-900);
  color: var(--white);
  font-size: 0.75rem;
  border-radius: 0.375rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-fast) var(--ease-in-out);
  z-index: 1000;
}

.tooltip-content::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 4px solid transparent;
  border-top-color: var(--gray-900);
}

.tooltip:hover .tooltip-content {
  opacity: 1;
}

/* Dropdown Components */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-content {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 0.5rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--duration-fast) var(--ease-out);
  z-index: 1000;
}

.dropdown.open .dropdown-content {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: block;
  width: 100%;
  padding: 0.75rem 1rem;
  color: var(--gray-700);
  text-decoration: none;
  border: none;
  background: none;
  text-align: left;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-in-out);
}

.dropdown-item:hover {
  background: var(--gray-50);
  color: var(--orange-600);
}

.dropdown-item:first-child {
  border-radius: 0.5rem 0.5rem 0 0;
}

.dropdown-item:last-child {
  border-radius: 0 0 0.5rem 0.5rem;
}

.dropdown-divider {
  height: 1px;
  background: var(--gray-200);
  margin: 0.25rem 0;
}

/* Tab Components */
.tabs {
  border-bottom: 1px solid var(--gray-200);
  margin-bottom: 1.5rem;
}

.tab-list {
  display: flex;
  gap: 2rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tab {
  padding: 0.75rem 0;
  color: var(--gray-600);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: all var(--duration-fast) var(--ease-in-out);
  font-weight: var(--font-medium);
  cursor: pointer;
}

.tab:hover {
  color: var(--orange-600);
}

.tab.active {
  color: var(--orange-600);
  border-bottom-color: var(--orange-500);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: tab-fade-in var(--duration-fast) var(--ease-out);
}

@keyframes tab-fade-in {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Accordion Components */
.accordion {
  border: 1px solid var(--gray-200);
  border-radius: 0.5rem;
  overflow: hidden;
}

.accordion-item {
  border-bottom: 1px solid var(--gray-200);
}

.accordion-item:last-child {
  border-bottom: none;
}

.accordion-trigger {
  width: 100%;
  padding: 1rem 1.5rem;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: var(--font-medium);
  color: var(--gray-900);
  transition: all var(--duration-fast) var(--ease-in-out);
}

.accordion-trigger:hover {
  background: var(--gray-50);
}

.accordion-trigger.active {
  background: var(--orange-50);
  color: var(--orange-700);
}

.accordion-icon {
  transition: transform var(--duration-fast) var(--ease-in-out);
}

.accordion-trigger.active .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-normal) var(--ease-out);
}

.accordion-content.active {
  max-height: 1000px;
}

.accordion-body {
  padding: 1rem 1.5rem;
  color: var(--gray-700);
  line-height: 1.6;
}

/* Loading Components */
.loading-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--gray-200);
  border-top-color: var(--orange-500);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-dots {
  display: inline-flex;
  gap: 0.25rem;
}

.loading-dot {
  width: 8px;
  height: 8px;
  background: var(--orange-500);
  border-radius: 50%;
  animation: loading-dot 1.4s ease-in-out infinite both;
}

.loading-dot:nth-child(1) { animation-delay: -0.32s; }
.loading-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes loading-dot {
  0%, 80%, 100% { transform: scale(0); }
  40% { transform: scale(1); }
}

.loading-skeleton {
  background: linear-gradient(90deg, var(--gray-200) 25%, var(--gray-300) 50%, var(--gray-200) 75%);
  background-size: 200% 100%;
  animation: loading-skeleton 1.5s infinite;
  border-radius: 0.25rem;
}

@keyframes loading-skeleton {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Utility Classes */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.focus-visible {
  outline: 2px solid var(--orange-500);
  outline-offset: 2px;
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}