/**
 * User Common Styles
 * 학생 영역 공통 스타일
 */

:root {
  /* 색상 팔레트 */
  --primary: #4f46e5;
  --primary-dark: #3730a3;
  --primary-light: #e0e7ff;
  --secondary: #0ea5e9;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;

  /* 배경 & 표면 */
  --bg: #f1f5f9;
  --surface: #ffffff;
  --border: #e2e8f0;

  /* 텍스트 */
  --text: #1e293b;
  --text-muted: #64748b;

  /* 디자인 토큰 */
  --radius: 10px;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
  --transition: 0.2s ease;
}

/* ============================================
   전체 페이지 레이아웃
   ============================================ */
.user-page {
  min-height: 100vh;
  background: linear-gradient(135deg, #e0e7ff 0%, #e0f2fe 100%);
  display: flex;
  flex-direction: column;
  padding: 16px;
}

.user-container {
  max-width: 480px;
  margin: 0 auto;
  width: 100%;
  flex: 1;
}

/* ============================================
   헤더 (상단 정보 바)
   ============================================ */
.user-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  margin-bottom: 24px;
  border-bottom: 2px solid rgba(255, 255, 255, 0.5);
}

.user-header-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 700;
  color: white;
}

.user-header-logo i {
  font-size: 24px;
}

.user-header-info {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.2);
  padding: 8px 12px;
  border-radius: 20px;
  color: white;
  font-size: 13px;
}

.user-header-info i {
  font-size: 14px;
}

/* ============================================
   카드 컴포넌트
   ============================================ */
.user-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 24px;
  margin-bottom: 16px;
}

.user-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.user-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

.user-card-subtitle {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 4px;
}

.user-card-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ============================================
   배지 & 태그
   ============================================ */
.user-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  background: var(--primary-light);
  color: var(--primary-dark);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
}

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

.user-badge.warning {
  background: #fef3c7;
  color: #b45309;
}

.user-badge.danger {
  background: #fee2e2;
  color: #991b1b;
}

/* ============================================
   버튼 스타일
   ============================================ */
.user-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 20px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.user-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.user-btn:active {
  transform: translateY(0);
}

.user-btn.full {
  width: 100%;
}

.user-btn.secondary {
  background: var(--secondary);
}

.user-btn.secondary:hover {
  background: #0284c7;
}

.user-btn.success {
  background: var(--success);
}

.user-btn.success:hover {
  background: #16a34a;
}

.user-btn.outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.user-btn.outline:hover {
  background: var(--primary-light);
}

.user-btn.small {
  height: 40px;
  font-size: 14px;
  padding: 0 16px;
}

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

/* ============================================
   입력 필드
   ============================================ */
.user-input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.user-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.user-input,
.user-select {
  width: 100%;
  height: 44px;
  padding: 0 12px;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  font-size: 15px;
  color: var(--text);
  font-family: inherit;
  transition: border-color var(--transition);
}

.user-input:focus,
.user-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.user-input::placeholder {
  color: var(--text-muted);
}

.user-input:disabled,
.user-select:disabled {
  background: var(--bg);
  color: var(--text-muted);
  cursor: not-allowed;
}

/* ============================================
   그리드 레이아웃
   ============================================ */
.user-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.user-grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
}

/* ============================================
   에러 & 알림
   ============================================ */
.user-error {
  padding: 12px;
  background: #fee2e2;
  border: 1px solid #fecaca;
  border-radius: var(--radius);
  color: #991b1b;
  font-size: 14px;
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.user-success {
  padding: 12px;
  background: #dcfce7;
  border: 1px solid #bbf7d0;
  border-radius: var(--radius);
  color: #166534;
  font-size: 14px;
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.user-warning {
  padding: 12px;
  background: #fef3c7;
  border: 1px solid #fde68a;
  border-radius: var(--radius);
  color: #b45309;
  font-size: 14px;
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.user-info {
  padding: 12px;
  background: #e0e7ff;
  border: 1px solid #c7d2fe;
  border-radius: var(--radius);
  color: #3730a3;
  font-size: 14px;
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

/* ============================================
   푸터
   ============================================ */
.user-footer {
  text-align: center;
  padding: 16px 0;
  color: rgba(255, 255, 255, 0.8);
  font-size: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  margin-top: auto;
}

/* ============================================
   로딩 스피너
   ============================================ */
.user-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--primary-light);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ============================================
   반응형 디자인
   ============================================ */
@media (max-width: 480px) {
  .user-card {
    padding: 16px;
  }

  .user-grid-2,
  .user-grid-3 {
    grid-template-columns: 1fr;
  }

  .user-btn {
    height: 44px;
    font-size: 14px;
  }
}

/* ============================================
   유틸리티 클래스
   ============================================ */
.user-hidden {
  display: none !important;
}

.user-text-center {
  text-align: center;
}

.user-text-muted {
  color: var(--text-muted);
}

.user-mt-2 {
  margin-top: 8px;
}

.user-mt-4 {
  margin-top: 16px;
}

.user-mb-2 {
  margin-bottom: 8px;
}

.user-mb-4 {
  margin-bottom: 16px;
}