/**
 * 컴포넌트 스타일
 *
 * 재사용 가능한 UI 컴포넌트의 기본 스타일
 * - 버튼, 카드, 배지, 입력 필드, Toast 등
 */

/* ========================================
   버튼 (Button)
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  background-color: hsl(var(--background));
  color: hsl(var(--foreground));
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  text-decoration: none;
  user-select: none;
  white-space: nowrap;
  transition: all var(--duration-base) var(--easing-ease-in-out);
}

.btn:hover:not(:disabled) {
  background-color: hsl(var(--muted));
  border-color: hsl(var(--border));
}

.btn:active:not(:disabled) {
  transform: scale(0.98);
}

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

.btn:focus-visible {
  outline: 2px solid hsl(var(--ring));
  outline-offset: 2px;
}

/* 버튼 크기 */
.btn--sm {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--text-xs);
}

.btn--lg,
.btn-lg {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--text-base);
}

/* 버튼 타입 */
.btn--primary {
  background-color: hsl(var(--primary));
  color: hsl(var(--primary-foreground));
  border-color: hsl(var(--primary));
}

.btn--primary:hover:not(:disabled) {
  background-color: hsl(var(--accent));
  border-color: hsl(var(--accent));
}

.btn--secondary {
  background-color: hsl(var(--secondary));
  color: hsl(var(--secondary-foreground));
  border-color: hsl(var(--secondary));
}

.btn--destructive {
  background-color: hsl(var(--destructive));
  color: hsl(var(--destructive-foreground));
  border-color: hsl(var(--destructive));
}

.btn--destructive:hover:not(:disabled) {
  opacity: 0.9;
}

.btn--ghost {
  background-color: transparent;
  border-color: transparent;
  color: hsl(var(--foreground));
}

.btn--ghost:hover:not(:disabled) {
  background-color: hsl(var(--muted));
}

/* ========================================
   카드 (Card)
   ======================================== */

.card {
  background-color: hsl(var(--card));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--duration-base) var(--easing-ease-in-out);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card--elevated {
  box-shadow: var(--shadow-lg);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid hsl(var(--border));
}

.card-header h2,
.card-header h3,
.card-header h4 {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
}

.card-body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.card-footer {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-sm);
  border-top: 1px solid hsl(var(--border));
}

/* ========================================
   배지 (Badge)
   ======================================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 9999px;
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  white-space: nowrap;
  background-color: hsl(var(--secondary));
  color: hsl(var(--secondary-foreground));
}

.badge--success {
  background-color: hsl(var(--color-success) / 0.15);
  color: hsl(var(--color-success));
}

.badge--destructive {
  background-color: hsl(var(--color-error) / 0.15);
  color: hsl(var(--color-error));
}

.badge--warning {
  background-color: hsl(var(--color-warning) / 0.15);
  color: hsl(var(--color-warning));
}

.badge--info {
  background-color: hsl(var(--color-info) / 0.15);
  color: hsl(var(--color-info));
}

/* ========================================
   입력 필드 (Input, Textarea, Select)
   ======================================== */

input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
input[type="number"],
input[type="tel"],
textarea,
select {
  width: 100%;
  padding: var(--spacing-sm);
  border: 1px solid hsl(var(--input));
  border-radius: var(--radius);
  background-color: hsl(var(--background));
  color: hsl(var(--foreground));
  font-family: var(--font-family);
  font-size: var(--text-sm);
  line-height: var(--line-height-normal);
  transition: border-color var(--duration-base) var(--easing-ease-in-out),
              box-shadow var(--duration-base) var(--easing-ease-in-out);
}

input[type="text"]::placeholder,
input[type="email"]::placeholder,
input[type="password"]::placeholder,
input[type="search"]::placeholder,
textarea::placeholder {
  color: hsl(var(--muted-foreground));
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="search"]:focus,
input[type="number"]:focus,
input[type="tel"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: hsl(var(--ring));
  box-shadow: 0 0 0 3px hsl(var(--ring) / 0.1);
}

textarea {
  resize: vertical;
  min-height: 100px;
}

/* 파일 입력 */
input[type="file"] {
  display: none;
}

/* ========================================
   Toast 알림 (Toast)
   ======================================== */

.toast-container {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  pointer-events: none;
  max-width: 420px;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background-color: hsl(var(--card));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  animation: toast-slide-in var(--duration-slow) var(--easing-ease-out);
}

.toast--hide {
  animation: toast-slide-out var(--duration-slow) var(--easing-ease-in);
}

.toast__icon {
  flex-shrink: 0;
  font-size: 1.25rem;
  line-height: 1;
}

.toast__content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.toast__title {
  font-weight: var(--font-weight-semibold);
  font-size: var(--text-sm);
}

.toast__message {
  font-size: var(--text-sm);
  color: hsl(var(--muted-foreground));
  line-height: var(--line-height-snug);
}

.toast__action {
  margin-top: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: hsl(var(--primary) / 0.1);
  color: hsl(var(--primary));
  border: none;
  border-radius: calc(var(--radius) - 2px);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--duration-base) var(--easing-ease-in-out);
}

.toast__action:hover {
  background-color: hsl(var(--primary) / 0.2);
}

.toast__close {
  flex-shrink: 0;
  background: none;
  border: none;
  color: hsl(var(--muted-foreground));
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0;
  line-height: 1;
  transition: color var(--duration-base) var(--easing-ease-in-out);
}

.toast__close:hover {
  color: hsl(var(--foreground));
}

/* Toast 타입 */
.toast--success {
  border-left: 4px solid hsl(var(--color-success));
}

.toast--error {
  border-left: 4px solid hsl(var(--color-error));
}

.toast--warning {
  border-left: 4px solid hsl(var(--color-warning));
}

.toast--info {
  border-left: 4px solid hsl(var(--color-info));
}

/* ========================================
   애니메이션
   ======================================== */

@keyframes toast-slide-in {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes toast-slide-out {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(100%);
  }
}

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

@keyframes scale-in {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* ========================================
   유틸리티 클래스
   ======================================== */

.fade-in {
  animation: fade-in var(--duration-slow) var(--easing-ease-out);
}

.scale-in {
  animation: scale-in var(--duration-slow) var(--easing-ease-out);
}

/* ========================================
   반응형 디자인
   ======================================== */

@media (max-width: 768px) {
  .toast-container {
    top: auto;
    bottom: var(--spacing-lg);
    right: var(--spacing-sm);
    left: var(--spacing-sm);
    max-width: none;
  }

  .toast {
    width: 100%;
  }

  .btn--lg {
    width: 100%;
  }
}

/* ========================================
   아이콘 버튼 (Icon Button)
   ======================================== */

.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: hsl(var(--secondary));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  color: hsl(var(--foreground));
  cursor: pointer;
  transition: all var(--duration-base) var(--easing-ease-in-out);
}

.icon-button:hover {
  background: hsl(var(--accent) / 0.1);
  border-color: hsl(var(--accent));
  transform: translateY(-2px);
}

.icon-button:active {
  transform: translateY(0);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.icon-button:focus-visible {
  outline: 2px solid hsl(var(--ring));
  outline-offset: 2px;
}

.icon-button svg {
  transition: stroke var(--duration-base) var(--easing-ease-in-out);
}

.icon-button:hover svg {
  stroke: hsl(var(--accent));
}

/* ========================================
   SVG 아이콘 (SVG Icons)
   ======================================== */

/* 섹션 헤더 아이콘 */
.section-icon,
.header-icon {
  display: inline;
  margin-right: var(--spacing-sm);
  vertical-align: middle;
  color: hsl(var(--primary));
  transition: color var(--duration-base);
}

h1 .header-icon {
  display: flex;
  align-items: center;
  margin-right: var(--spacing-md);
}

h2 .section-icon {
  display: inline-flex;
  align-items: center;
  margin-right: var(--spacing-sm);
}

/* 인라인 아이콘 */
.inline-icon {
  display: inline-flex;
  vertical-align: middle;
  margin-right: var(--spacing-xs);
}

/* 드래그 앤 드롭 영역 */
.drop-zone {
  position: relative;
  min-height: 200px;
  border: 2px dashed hsl(var(--border));
  border-radius: calc(var(--radius) * 2);
  padding: var(--spacing-2xl);
  text-align: center;
  cursor: pointer;

  /* Glassmorphism 효과 */
  background: linear-gradient(135deg,
    hsl(var(--background) / 0.6) 0%,
    hsl(var(--secondary) / 0.3) 100%);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);

  /* 미묘한 그림자 */
  box-shadow: var(--shadow-md);

  transition: all var(--duration-base) var(--easing-ease-out);
}

.drop-zone:hover {
  border-color: hsl(var(--primary));
  background: linear-gradient(135deg,
    hsl(var(--background) / 0.8) 0%,
    hsl(var(--secondary) / 0.5) 100%);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.drop-zone.drag-over {
  border-color: hsl(var(--color-info));
  border-style: solid;
  background: hsl(var(--color-info) / 0.1);
  box-shadow: 0 0 0 4px hsl(var(--color-info) / 0.1);
}

/* 파일 추가용 축소 드롭존 */
.drop-zone--compact {
  min-height: 60px;
  padding: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.drop-zone--compact .drop-zone-icon {
  display: none;
}

.drop-zone--compact .drop-zone-text {
  font-size: var(--text-sm);
  margin-bottom: 0;
}

.drop-zone--compact .drop-zone-hint {
  font-size: var(--text-xs);
}

/* 드래그 앤 드롭 텍스트 */
.drop-zone-text {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-medium);
  color: hsl(var(--foreground));
  margin-bottom: var(--spacing-sm);
}

.drop-zone-hint {
  font-size: var(--text-sm);
  color: hsl(var(--muted-foreground));
}

/* 드래그 앤 드롭 아이콘 */
.drop-zone-icon {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-md);
  opacity: 0.8;
  transition: all var(--duration-base) var(--easing-ease-in-out);
  color: hsl(var(--muted-foreground));
}

.drop-zone:hover .drop-zone-icon {
  opacity: 1;
  transform: scale(1.1);
  color: hsl(var(--primary));
}

/* 진행중 아이콘 (회전 애니메이션) */
.spinner {
  animation: spin 1s linear infinite;
  stroke: hsl(var(--color-info));
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* 테마 아이콘 */
.theme-icon {
  transition: opacity var(--duration-base) var(--easing-ease-in-out);
  stroke: hsl(var(--foreground));
}

.dark .theme-icon-dark {
  display: none !important;
}

.dark .theme-icon-light {
  display: block !important;
}

/* ========================================
   버튼 내 아이콘
   ======================================== */

.btn svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  transition: stroke var(--duration-base) var(--easing-ease-in-out);
}

.btn--sm svg {
  width: 14px;
  height: 14px;
}

.btn--lg svg {
  width: 20px;
  height: 20px;
}

/* 버튼 상태별 아이콘 색상 */
.btn--primary svg {
  stroke: hsl(var(--primary-foreground));
}

.btn--secondary svg {
  stroke: hsl(var(--secondary-foreground));
}

.btn--danger svg {
  stroke: hsl(var(--destructive-foreground));
}

.btn--ghost:hover svg {
  stroke: hsl(var(--primary));
}

/* ========================================
   현재 파일 표시
   ======================================== */

.current-file {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: hsl(var(--secondary) / 0.3);
  border-left: 4px solid hsl(var(--primary));
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: var(--text-sm);
}

.current-file svg {
  flex-shrink: 0;
  stroke: hsl(var(--primary));
}

/* ========================================
   진행 정보 아이콘 지원
   ======================================== */

.progress-info-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
}

.progress-info-item svg {
  flex-shrink: 0;
  stroke: hsl(var(--muted-foreground));
  transition: stroke var(--duration-base);
}

.progress-info-item:hover svg {
  stroke: hsl(var(--primary));
}

/* ========================================
   전역 헤더 (Header)
   ======================================== */

.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: hsl(var(--background));
  border-bottom: 1px solid hsl(var(--border));

  /* Glassmorphism 효과 */
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background: linear-gradient(180deg,
    hsl(var(--background) / 0.95) 0%,
    hsl(var(--background) / 0.85) 100%);

  box-shadow: var(--shadow-sm);
  transition: all var(--duration-base) var(--easing-ease-in-out);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
  border-bottom: 1px solid hsl(var(--border));
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

/* 헤더 브랜드 (로고 + 제목) */
.header-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex: 1;
  min-width: 0;
}

.header-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg,
    hsl(var(--primary) / 0.1),
    hsl(var(--accent) / 0.1));
  border-radius: var(--radius);
  border: 1px solid hsl(var(--border));
  transition: all var(--duration-base) var(--easing-ease-in-out);
}

.header-logo:hover {
  background: linear-gradient(135deg,
    hsl(var(--primary) / 0.15),
    hsl(var(--accent) / 0.15));
  border-color: hsl(var(--primary));
  transform: scale(1.05);
}

.header-logo svg {
  color: hsl(var(--primary));
  stroke-width: 1.5;
}

.header-title-group {
  flex: 1;
  min-width: 0;
}

.header-title {
  margin: 0;
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  color: hsl(var(--foreground));
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-subtitle {
  margin: 4px 0 0 0;
  font-size: var(--text-sm);
  color: hsl(var(--muted-foreground));
  font-weight: var(--font-weight-normal);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 헤더 액션 (버튼 등) */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-shrink: 0;
}

.theme-toggle {
  position: relative;
}

.theme-toggle:hover {
  background: hsl(var(--primary) / 0.1);
  border-color: hsl(var(--primary));
}

/* ========================================
   헤더 반응형 디자인
   ======================================== */

@media (max-width: 768px) {
  .header-container {
    padding: var(--spacing-md);
    gap: var(--spacing-md);
  }

  .header-title {
    font-size: var(--text-lg);
  }

  .header-logo {
    width: 40px;
    height: 40px;
  }

  .header-logo svg {
    width: 20px;
    height: 20px;
  }

  .header-subtitle {
    display: none;
  }
}

@media (max-width: 480px) {
  .header-container {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .header-brand {
    gap: var(--spacing-sm);
  }

  .header-title {
    font-size: var(--text-base);
  }

  .header-logo {
    width: 36px;
    height: 36px;
  }
}

/* ========================================
   인쇄 스타일 (Print)
   ======================================== */

@media print {
  .toast-container,
  .btn--ghost,
  .icon-button {
    display: none;
  }

  .card {
    box-shadow: none;
    border: 1px solid #ccc;
    page-break-inside: avoid;
  }

  .theme-icon {
    display: none !important;
  }
}