:root {
    --primary-color: #4F46E5; /* Indigo */
    --primary-hover: #4338CA;
    --secondary-color: #10B981; /* Emerald */
    --danger-color: #EF4444; /* Red */
    --danger-hover: #DC2626;
    
    --bg-color: #F3F4F6;
    --surface-color: rgba(255, 255, 255, 0.85);
    --surface-solid: #FFFFFF;
    
    --text-main: #1F2937;
    --text-muted: #6B7280;
    --border-color: #E5E7EB;
    
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, 'Helvetica Neue', 'Segoe UI', 'Apple SD Gothic Neo', 'Noto Sans KR', 'Malgun Gothic', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
    background-image: 
        radial-gradient(at 0% 0%, hsla(253,16%,7%,0.05) 0, transparent 50%), 
        radial-gradient(at 50% 0%, hsla(225,39%,30%,0.05) 0, transparent 50%), 
        radial-gradient(at 100% 0%, hsla(339,49%,30%,0.05) 0, transparent 50%);
    background-attachment: fixed;
    min-height: 100vh;
}

#app-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px;
}

/* View System */
.view-section {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}
.view-section.active {
    display: block;
}

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

/* Glass Panel Base */
.glass-panel {
    background: var(--surface-color);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 24px;
    margin-bottom: 24px;
}

/* Header Area */
.header-area {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.header-title h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-title p {
    color: var(--text-muted);
    margin-top: 4px;
    font-size: 15px;
}

.header-actions {
    display: flex;
    gap: 16px;
    align-items: center;
}

/* Search Box */
.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box i {
    position: absolute;
    left: 14px;
    color: var(--text-muted);
}

.search-box input {
    padding: 10px 16px 10px 40px;
    border: 1px solid var(--border-color);
    border-radius: 30px;
    width: 250px;
    font-size: 14px;
    outline: none;
    transition: all 0.2s;
    background: var(--surface-solid);
}

.search-box input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
    width: 280px;
}

/* Buttons */
button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    border-radius: var(--radius-md);
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}
.btn-primary:hover { background-color: var(--primary-hover); transform: translateY(-1px); }

.btn-secondary {
    background-color: white;
    color: var(--text-main);
    border: 1px solid var(--border-color);
}
.btn-secondary:hover { background-color: #F9FAFB; border-color: #D1D5DB; }

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}
.btn-danger:hover { background-color: var(--danger-hover); }

.btn-back {
    background: transparent;
    color: var(--text-muted);
    padding: 8px 12px;
    font-size: 15px;
}
.btn-back:hover { background: rgba(0,0,0,0.05); color: var(--text-main); }

/* Filter Area */
.filter-area {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: flex-end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.filter-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
}

.filter-input {
    padding: 9px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: white;
    font-family: inherit;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

.filter-input:focus {
    border-color: var(--primary-color);
}

.checkbox-group {
    flex-direction: row;
    align-items: center;
    height: 40px;
    margin-bottom: 2px;
}
.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-main);
}
.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
}

.date-presets {
    display: flex;
    gap: 6px;
    margin-top: 4px;
}
.btn-preset {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 4px 10px;
    font-size: 12px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s;
}
.btn-preset:hover, .btn-preset.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* List Container (Cards) */
.list-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.log-card {
    background: var(--surface-solid);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all 0.2s;
    cursor: pointer;
}

.log-card:hover {
    box-shadow: var(--shadow-md);
    border-color: #D1D5DB;
    transform: translateY(-2px);
}

.log-card-header {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
    background: #F9FAFB;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.log-meta {
    display: flex;
    gap: 12px;
    align-items: center;
    font-size: 14px;
}
.meta-badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    background: #E0E7FF;
    color: #3730A3;
}
.meta-draft {
    background: #FEE2E2;
    color: #991B1B;
}
.meta-date { font-weight: 600; }
.meta-dept { color: var(--text-muted); }
.meta-author { font-weight: 500; }

.log-card-body {
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 24px;
}

.log-section h3 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 8px;
}

.log-section h3.today { color: var(--primary-color); }
.log-section h3.next { color: var(--secondary-color); }

.log-content {
    font-size: 14px;
    color: #4B5563;
    line-height: 1.6;
    white-space: pre-wrap; /* Preserve newlines */
}

.log-attachments {
    margin-top: 16px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    border-top: 1px dashed var(--border-color);
    padding-top: 12px;
}
.log-attachments img {
    max-width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: var(--radius-md);
    cursor: pointer;
    border: 1px solid var(--border-color);
}
.log-attachments img:hover {
    opacity: 0.8;
}

/* Editor View */
.editor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}
.editor-actions {
    display: flex;
    gap: 12px;
}

.form-row {
    margin-bottom: 24px;
}

.multi-col {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.split-editor {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
}
.form-group input, .form-group select {
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 14px;
    outline: none;
    transition: all 0.2s;
}
.form-group textarea {
    padding: 12px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 14px;
    outline: none;
    transition: all 0.2s;
    min-height: 250px;
    resize: vertical;
    line-height: 1.6;
}
.form-group textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.attachment-section {
    margin-top: 24px;
}
.dropzone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: 30px;
    text-align: center;
    cursor: pointer;
    background: #FAFAFA;
    transition: all 0.2s;
}
.dropzone:hover, .dropzone.dragover {
    border-color: var(--primary-color);
    background: #EEF2FF;
}
.dropzone i {
    font-size: 32px;
    color: var(--text-muted);
    margin-bottom: 12px;
}
.dropzone p {
    font-size: 14px;
    color: var(--text-muted);
}

.attachment-gallery {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 16px;
}
.attachment-item {
    position: relative;
    width: 120px;
    height: 120px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    overflow: hidden;
    background: #FFF;
}
.attachment-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.attachment-item .btn-remove {
    position: absolute;
    top: 6px;
    right: 6px;
    background: rgba(239, 68, 68, 0.9);
    color: white;
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
}
.attachment-item .btn-remove:hover {
    background: rgba(220, 38, 38, 1);
}

@media (max-width: 1024px) {
    .log-card-body {
        grid-template-columns: 1fr;
    }
    .split-editor {
        grid-template-columns: 1fr;
    }
}