/* ============================================
   따뜻한 라이트 모드 글래스모피즘 디자인
   ============================================ */

/* 폰트 설정 - 부드럽고 따뜻한 느낌 */
body {
    font-family: 'Noto Sans KR', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-weight: 400;
    letter-spacing: -0.01em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 따뜻한 색상 팔레트 */
:root {
    /* 따뜻한 배경색 - 크림/베이지 톤 */
    --warm-bg-primary: linear-gradient(135deg, #FFF9F0 0%, #FFF5E8 100%);
    --warm-bg-secondary: #FFFBF5;
    --warm-bg-tertiary: #FFF8F0;
    
    /* 따뜻한 주요 색상 - 오렌지/코랄 톤 */
    --warm-primary: #FF7A5C;
    --warm-primary-light: #FF9578;
    --warm-primary-dark: #E65A3F;
    --warm-primary-alpha: rgba(255, 122, 92, 0.1);
    --warm-primary-alpha-strong: rgba(255, 122, 92, 0.2);
    
    /* 따뜻한 그라데이션 */
    --warm-gradient: linear-gradient(135deg, #FF7A5C 0%, #FF9578 100%);
    --warm-gradient-light: linear-gradient(135deg, #FF9578 0%, #FFB5A0 100%);
    
    /* 따뜻한 텍스트 색상 */
    --warm-text-primary: #3C2A21;
    --warm-text-secondary: #6B5B52;
    --warm-text-tertiary: #9B8A81;
    --warm-text-inverse: #FFFFFF;
    
    /* 따뜻한 표면 색상 */
    --warm-surface-primary: rgba(255, 251, 245, 0.8);
    --warm-surface-secondary: rgba(255, 248, 240, 0.6);
    --warm-surface-tertiary: rgba(255, 245, 232, 0.5);
    
    /* 따뜻한 테두리 */
    --warm-border: rgba(107, 91, 82, 0.2);
    --warm-border-light: rgba(107, 91, 82, 0.1);
    --warm-border-strong: rgba(107, 91, 82, 0.3);
    
    /* 따뜻한 오버레이 */
    --warm-overlay: rgba(60, 42, 33, 0.4);
    
    /* 따뜻한 성공/에러 색상 */
    --warm-success: #7FB069;
    --warm-error: #E85D5D;
    --warm-warning: #F4A460;
    
    /* 글래스 효과 */
    --glass-bg: rgba(255, 251, 245, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-shadow: rgba(60, 42, 33, 0.08);
}

/* 다크 모드 색상 팔레트 */
.dark {
    /* 따뜻한 다크 배경색 - 어두운 베이지/갈색 톤 */
    --warm-bg-primary: linear-gradient(135deg, #2A2520 0%, #1F1A16 100%);
    --warm-bg-secondary: #2A2520;
    --warm-bg-tertiary: #332E28;
    
    /* 따뜻한 주요 색상 - 다크 모드에서도 따뜻한 오렌지 톤 유지 */
    --warm-primary: #FF8A6B;
    --warm-primary-light: #FFA085;
    --warm-primary-dark: #FF6B4D;
    --warm-primary-alpha: rgba(255, 138, 107, 0.15);
    --warm-primary-alpha-strong: rgba(255, 138, 107, 0.25);
    
    /* 따뜻한 그라데이션 */
    --warm-gradient: linear-gradient(135deg, #FF8A6B 0%, #FFA085 100%);
    --warm-gradient-light: linear-gradient(135deg, #FFA085 0%, #FFB8A3 100%);
    
    /* 따뜻한 텍스트 색상 */
    --warm-text-primary: #F5EDE5;
    --warm-text-secondary: #D4C8BC;
    --warm-text-tertiary: #B8A99A;
    --warm-text-inverse: #FFFFFF;
    
    /* 따뜻한 표면 색상 */
    --warm-surface-primary: rgba(42, 37, 32, 0.8);
    --warm-surface-secondary: rgba(51, 46, 40, 0.6);
    --warm-surface-tertiary: rgba(42, 37, 32, 0.5);
    
    /* 따뜻한 테두리 */
    --warm-border: rgba(212, 200, 188, 0.2);
    --warm-border-light: rgba(212, 200, 188, 0.1);
    --warm-border-strong: rgba(212, 200, 188, 0.3);
    
    /* 따뜻한 오버레이 */
    --warm-overlay: rgba(15, 12, 10, 0.7);
    
    /* 따뜻한 성공/에러 색상 */
    --warm-success: #8FC178;
    --warm-error: #F56C6C;
    --warm-warning: #F5B673;
    
    /* 글래스 효과 */
    --glass-bg: rgba(42, 37, 32, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: rgba(0, 0, 0, 0.3);
}

/* 기본 배경 - 따뜻한 그라데이션 */
body {
    background: var(--warm-bg-primary);
    color: var(--warm-text-primary);
    min-height: 100vh;
    transition: background 0.3s ease, color 0.3s ease;
}

.warm-light-mode {
    background: var(--warm-bg-primary);
    color: var(--warm-text-primary);
    min-height: 100vh;
}

/* 글래스모피즘 효과 기본 클래스 */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--glass-border);
    box-shadow: 
        0 8px 32px var(--glass-shadow),
        inset 0 1px 0 rgba(255, 255, 255, 0.4);
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.dark .glass-card {
    box-shadow: 
        0 8px 32px var(--glass-shadow),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.glass-nav {
    background: rgba(255, 251, 245, 0.75);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--warm-border-light);
    box-shadow: 0 2px 20px rgba(60, 42, 33, 0.05);
    transition: background 0.3s ease, border-color 0.3s ease;
}

.dark .glass-nav {
    background: rgba(42, 37, 32, 0.85);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.glass-input {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--warm-border);
    color: var(--warm-text-primary);
    transition: all 0.3s ease;
}

.glass-input:focus {
    background: rgba(255, 255, 255, 0.8);
    border-color: var(--warm-primary);
    box-shadow: 0 0 0 3px var(--warm-primary-alpha);
}

.dark .glass-input {
    background: rgba(51, 46, 40, 0.6);
    color: var(--warm-text-primary);
}

.dark .glass-input:focus {
    background: rgba(51, 46, 40, 0.8);
}

/* 드롭 존 스타일 */
.drop-zone-container {
    border: 2px dashed var(--warm-border);
    background: rgba(255, 251, 245, 0.5);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.drop-zone-container:hover {
    border-color: var(--warm-primary);
    background: rgba(255, 251, 245, 0.8);
    transform: translateY(-2px);
    box-shadow: 
        0 12px 40px rgba(255, 122, 92, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.dark .drop-zone-container {
    background: rgba(42, 37, 32, 0.5);
}

.dark .drop-zone-container:hover {
    background: rgba(51, 46, 40, 0.8);
    box-shadow: 
        0 12px 40px rgba(255, 138, 107, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

#drop-zone.drag-over {
    border-color: var(--warm-primary);
    background: var(--warm-primary-alpha);
    transform: scale(1.02);
}

/* 따뜻한 버튼 스타일 */
.warm-button-primary {
    background: var(--warm-gradient);
    color: var(--warm-text-inverse);
    border: none;
    box-shadow: 
        0 4px 15px rgba(255, 122, 92, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.warm-button-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, #FF9578 0%, #FF7A5C 100%);
    transform: translateY(-2px);
    box-shadow: 
        0 6px 20px rgba(255, 122, 92, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.warm-button-primary:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 
        0 2px 10px rgba(255, 122, 92, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.warm-button-success {
    background: linear-gradient(135deg, #7FB069 0%, #8FC375 100%);
    color: var(--warm-text-inverse);
    border: none;
    box-shadow: 
        0 4px 15px rgba(127, 176, 105, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.warm-button-success:hover:not(:disabled) {
    background: linear-gradient(135deg, #8FC375 0%, #7FB069 100%);
    transform: translateY(-2px);
    box-shadow: 
        0 6px 20px rgba(127, 176, 105, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

/* 텍스트 색상 유틸리티 */
.text-warm-text-primary {
    color: var(--warm-text-primary);
}

.text-warm-text-secondary {
    color: var(--warm-text-secondary);
}

.text-warm-text-tertiary {
    color: var(--warm-text-tertiary);
}

.text-warm-primary {
    color: var(--warm-primary);
}

.text-warm-primary-light {
    color: var(--warm-primary-light);
}

.text-warm-primary-dark {
    color: var(--warm-primary-dark);
}

.text-warm-success {
    color: var(--warm-success);
}

.text-warm-error {
    color: var(--warm-error);
}

/* 배경 색상 유틸리티 */
.bg-warm-gradient {
    background: var(--warm-gradient);
}

.bg-warm-surface-primary {
    background: var(--warm-surface-primary);
}

.bg-warm-surface-secondary {
    background: var(--warm-surface-secondary);
}

.bg-warm-surface-tertiary {
    background: var(--warm-surface-tertiary);
}

/* 테두리 색상 */
.border-warm-border {
    border-color: var(--warm-border);
}

.border-warm-border\/30 {
    border-color: rgba(107, 91, 82, 0.3);
}

/* 오버레이 */
.bg-warm-overlay {
    background: var(--warm-overlay);
}

/* 진행률 바 */
#progress-bar {
    background: var(--warm-gradient);
    box-shadow: 
        0 2px 10px rgba(255, 122, 92, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

/* 토스트 스타일 */
.warm-toast {
    background: rgba(255, 251, 245, 0.95);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    color: var(--warm-text-primary);
    transition: background 0.3s ease, color 0.3s ease;
}

.dark .warm-toast {
    background: rgba(42, 37, 32, 0.95);
}

/* 맞춤법 오류 하이라이트 - 따뜻한 톤으로 */
.spell-error {
    text-decoration: underline;
    text-decoration-color: var(--warm-error);
    text-decoration-thickness: 2px;
    color: var(--warm-error);
    background: linear-gradient(120deg, rgba(232, 93, 93, 0.15) 0%, rgba(232, 93, 93, 0.05) 100%);
    padding: 2px 4px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.spell-error:hover {
    background: linear-gradient(120deg, rgba(232, 93, 93, 0.25) 0%, rgba(232, 93, 93, 0.1) 100%);
}

/* 로딩 애니메이션 - 따뜻한 색상 */
.loader {
    border: 3px solid rgba(255, 122, 92, 0.1);
    border-top: 3px solid var(--warm-primary);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 카드 호버 효과 - 글래스모피즘 */
.student-card {
    background: var(--glass-bg);
    backdrop-filter: blur(15px) saturate(180%);
    -webkit-backdrop-filter: blur(15px) saturate(180%);
    border: 1px solid var(--warm-border-light);
    border-radius: 1rem;
    box-shadow: 
        0 4px 20px var(--glass-shadow),
        inset 0 1px 0 rgba(255, 255, 255, 0.4);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.dark .student-card {
    box-shadow: 
        0 4px 20px var(--glass-shadow),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.student-card:hover {
    transform: translateY(-4px);
    box-shadow: 
        0 12px 40px rgba(60, 42, 33, 0.12),
        inset 0 1px 0 rgba(255, 255, 255, 0.5);
    border-color: var(--warm-border);
}

.dark .student-card:hover {
    box-shadow: 
        0 12px 40px rgba(0, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

/* 스크롤바 스타일링 - 따뜻한 톤 */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 248, 240, 0.5);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, rgba(255, 122, 92, 0.3), rgba(255, 149, 120, 0.3));
    border-radius: 10px;
    border: 2px solid transparent;
    background-clip: padding-box;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, rgba(255, 122, 92, 0.5), rgba(255, 149, 120, 0.5));
    background-clip: padding-box;
}

.dark ::-webkit-scrollbar-track {
    background: rgba(42, 37, 32, 0.5);
}

.dark ::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, rgba(255, 138, 107, 0.4), rgba(255, 160, 133, 0.4));
}

.dark ::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, rgba(255, 138, 107, 0.6), rgba(255, 160, 133, 0.6));
}

/* 모달 애니메이션 */
.modal {
    animation: modalFadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* 토스트 알림 애니메이션 */
#toast {
    animation: toastSlideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes toastSlideIn {
    from {
        opacity: 0;
        transform: translateX(100%) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0) translateY(0);
    }
}

/* 체크박스 스타일 커스텀 */
input[type="checkbox"] {
    accent-color: var(--warm-primary);
    cursor: pointer;
}

input[type="checkbox"]:focus {
    outline: 2px solid var(--warm-primary-alpha);
    outline-offset: 2px;
}

/* 셀렉트 박스 스타일 */
select.glass-input {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23FF7A5C' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
}

/* 포커스 링 개선 */
.focus\:ring-warm-primary\/30:focus {
    box-shadow: 0 0 0 3px var(--warm-primary-alpha);
}

/* 접근성 개선 */
@media (prefers-reduced-motion: reduce) {
    .loader {
        animation: none;
    }
    
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 텍스트 선택 개선 */
.original-text {
    user-select: text;
    cursor: text;
}

.corrections-content {
    user-select: text;
}

/* 인쇄 스타일 */
@media print {
    header, 
    #controls-container,
    #drop-zone,
    .modal,
    #toast,
    #sidebar,
    #sidebar-overlay {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .student-card {
        break-inside: avoid;
        margin-bottom: 20px;
        box-shadow: none !important;
        border: 1px solid #ddd !important;
    }
}

/* 반응형 개선 */
@media (max-width: 768px) {
    .glass-card {
        border-radius: 1.25rem;
    }
    
    .drop-zone-container {
        padding: 2rem 1rem;
        margin: 1rem 0;
    }
    
    #controls-container {
        flex-wrap: wrap;
        gap: 0.75rem;
    }
}

/* 상단 네비게이션 바 버튼 커서 스타일 */
header button, 
header label, 
header button * {
    cursor: pointer !important;
}

/* 추가: 결과 카드에 글래스 효과 적용 (app.js에서 동적으로 생성되는 요소들) */
#results-list .bg-white {
    background: var(--glass-bg) !important;
    backdrop-filter: blur(15px) saturate(180%);
    -webkit-backdrop-filter: blur(15px) saturate(180%);
    border: 1px solid var(--warm-border-light) !important;
    border-radius: 1rem !important;
    box-shadow: 
        0 4px 20px var(--glass-shadow),
        inset 0 1px 0 rgba(255, 255, 255, 0.4) !important;
}

.dark #results-list .bg-white {
    box-shadow: 
        0 4px 20px var(--glass-shadow),
        inset 0 1px 0 rgba(255, 255, 255, 0.05) !important;
}

/* 결과 리스트 간격 조정 */
#results-list {
    gap: 1.5rem;
}

#results-list > * {
    margin-bottom: 1.5rem;
}