/* 노인친화적 Speak & Grow 디자인 */

/* 기본 설정 */
* {
  box-sizing: border-box;
}

/* 폰트 및 텍스트 최적화 */
body {
  font-family: 'Noto Sans KR', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 22px;
  line-height: 1.8;
  font-weight: 500;
  color: #1a1a1a;
  letter-spacing: 0.025em;
}

/* 제목 스타일 */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  color: #111827;
  line-height: 1.4;
  margin-bottom: 0.5em;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.75rem; }
h5 { font-size: 1.5rem; }
h6 { font-size: 1.25rem; }

/* 링크 스타일 */
a {
  color: #2563eb;
  text-decoration: none;
  font-weight: 600;
}

a:hover {
  color: #1d4ed8;
  text-decoration: underline;
}

/* 버튼 기본 스타일 */
.btn-primary {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: white;
  font-weight: 700;
  font-size: 1.125rem;
  padding: 1rem 2rem;
  border-radius: 0.75rem;
  border: 3px solid #1d4ed8;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  transition: all 0.2s ease-in-out;
  cursor: pointer;
  min-height: 3.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
  transform: translateY(-1px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

/* 보조 버튼 */
.btn-secondary {
  background: white;
  color: #374151;
  font-weight: 600;
  font-size: 1.125rem;
  padding: 1rem 2rem;
  border-radius: 0.75rem;
  border: 3px solid #d1d5db;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  transition: all 0.2s ease-in-out;
  cursor: pointer;
  min-height: 3.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.btn-secondary:hover {
  border-color: #9ca3af;
  background: #f9fafb;
  transform: translateY(-1px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* 폼 요소 */
.form-input {
  font-size: 1.125rem;
  padding: 1rem 1.25rem;
  border: 3px solid #d1d5db;
  border-radius: 0.75rem;
  background: white;
  color: #111827;
  font-weight: 500;
  min-height: 3.5rem;
  transition: all 0.2s ease-in-out;
}

.form-input:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
  background: #fefefe;
}

.form-input::placeholder {
  color: #6b7280;
  font-weight: 400;
}

.form-label {
  font-size: 1.125rem;
  font-weight: 700;
  color: #111827;
  margin-bottom: 0.5rem;
  display: block;
}

/* 카드 스타일 */
.card {
  background: white;
  border-radius: 1rem;
  border: 2px solid #e5e7eb;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  padding: 2rem;
  margin-bottom: 1.5rem;
  transition: all 0.2s ease-in-out;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  border-color: #9ca3af;
}

.card-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #111827;
  margin-bottom: 1rem;
}

/* 아이콘 스타일 */
.icon {
  width: 1.5rem;
  height: 1.5rem;
  color: currentColor;
}

.icon-lg {
  width: 2rem;
  height: 2rem;
}

.icon-xl {
  width: 2.5rem;
  height: 2.5rem;
}

/* 네비게이션 */
.nav-link {
  font-size: 1.125rem;
  font-weight: 600;
  color: #374151;
  padding: 1rem 1.5rem;
  border-radius: 0.75rem;
  transition: all 0.2s ease-in-out;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 3rem;
}

.nav-link:hover {
  background: #f3f4f6;
  color: #2563eb;
}

.nav-link.active {
  background: #2563eb;
  color: white;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* 드롭다운 */
.dropdown-menu {
  background: white;
  border: 2px solid #e5e7eb;
  border-radius: 0.75rem;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  padding: 0.5rem;
  min-width: 12rem;
}

.dropdown-item {
  font-size: 1.125rem;
  font-weight: 500;
  color: #374151;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  transition: all 0.2s ease-in-out;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  min-height: 3rem;
}

.dropdown-item:hover {
  background: #f3f4f6;
  color: #2563eb;
}

.dropdown-item.active {
  background: #dbeafe;
  color: #1d4ed8;
  font-weight: 600;
}

/* 국기 아이콘 */
.flag-icon {
  width: 1.5rem;
  height: 1.125rem;
  border-radius: 0.25rem;
  background-size: cover;
  background-position: center;
  display: inline-block;
  border: 1px solid #d1d5db;
}

/* 대한민국 태극기 */
.flag-ko {
  background-image: url('data:image/svg+xml;base64,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');
}

.flag-en {
  background-image: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMjQiIGhlaWdodD0iMTYiIHZpZXdCb3g9IjAgMCAyNCAxNiIgZmlsbD0ibm9uZSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KPHJlY3Qgd2lkdGg9IjI0IiBoZWlnaHQ9IjE2IiBmaWxsPSIjMDEyMTY5Ii8+CjxyZWN0IHk9IjIiIHdpZHRoPSIyNCIgaGVpZ2h0PSIyLjUiIGZpbGw9IndoaXRlIi8+CjxyZWN0IHk9IjYiIHdpZHRoPSIyNCIgaGVpZ2h0PSIyLjUiIGZpbGw9IiNjZTExMjYiLz4KPHJlY3QgeT0iMTAiIHdpZHRoPSIyNCIgaGVpZ2h0PSIyLjUiIGZpbGw9IndoaXRlIi8+Cjwvc3ZnPg==');
}

.flag-jp {
  background-image: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMjQiIGhlaWdodD0iMTYiIHZpZXdCb3g9IjAgMCAyNCAxNiIgZmlsbD0ibm9uZSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KPHJlY3Qgd2lkdGg9IjI0IiBoZWlnaHQ9IjE2IiBmaWxsPSJ3aGl0ZSIvPgo8Y2lyY2xlIGN4PSIxMiIgY3k9IjgiIHI9IjQiIGZpbGw9IiNiYzAwMmQiLz4KPC9zdmc+');
}

.flag-cn {
  background-image: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMjQiIGhlaWdodD0iMTYiIHZpZXdCb3g9IjAgMCAyNCAxNiIgZmlsbD0ibm9uZSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KPHJlY3Qgd2lkdGg9IjI0IiBoZWlnaHQ9IjE2IiBmaWxsPSIjZGUyOTEwIi8+CjxzdGFyIGN4PSI2IiBjeT0iNCIgcj0iMiIgZmlsbD0iI2ZmZGUwMCIvPgo8L3N2Zz4=');
}

/* 토스트 메시지 */
.toast {
  background: white;
  border: 2px solid #e5e7eb;
  border-radius: 0.75rem;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  padding: 1rem 1.5rem;
  min-width: 20rem;
  font-size: 1.125rem;
  font-weight: 500;
}

.toast-success {
  border-color: #10b981;
  background: #f0fdf4;
  color: #065f46;
}

.toast-error {
  border-color: #ef4444;
  background: #fef2f2;
  color: #991b1b;
}

.toast-info {
  border-color: #3b82f6;
  background: #eff6ff;
  color: #1e40af;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
  body {
    font-size: 16px;
  }
  
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
  
  .btn-primary, .btn-secondary {
    font-size: 1rem;
    padding: 0.875rem 1.5rem;
    min-height: 3rem;
  }
  
  .form-input {
    font-size: 1rem;
    padding: 0.875rem 1rem;
    min-height: 3rem;
  }
  
  .card {
    padding: 1.5rem;
  }
}

/* 포커스 표시 강화 (접근성) */
*:focus {
  outline: 3px solid #93c5fd;
  outline-offset: 2px;
}

/* 고대비 모드 지원 */
@media (prefers-contrast: high) {
  body {
    color: #000000;
  }
  
  .btn-primary {
    background: #000000;
    border-color: #000000;
    color: #ffffff;
  }
  
  .btn-secondary {
    background: #ffffff;
    border-color: #000000;
    color: #000000;
  }
  
  .form-input {
    border-color: #000000;
  }
  
  .card {
    border-color: #000000;
  }
}

/* 움직임 줄이기 (전정 장애 고려) */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}