:root {
    --primary-color: #2d8cf0;
    --primary-color-dark: #1a7fd1;
    --primary-color-light: #79bbff;
    --secondary-color: #6c757d;
    --accent-color: #4CAF50;
    --error-color: #f44336;
    --warning-color: #ff9800;

    --text-color-primary: #333;
    --text-color-secondary: #555;
    --text-color-on-primary: #fff;
    --text-color-placeholder: #aaa;

    --bg-main: #f4f7f9;
    --bg-sidebar: #2c3e50;
    --bg-card: #fff;
    --bg-input: #fff;
    --bg-disabled: #e9ecef;

    --border-color: #e0e0e0;
    --border-radius-sm: 4px;
    --border-radius-md: 8px;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);

    --font-family: 'Segoe UI', 'Malgun Gothic', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    --spacing-unit: 8px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--font-family);
    background-color: var(--bg-main);
    color: var(--text-color-primary);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading.active {
    display: flex;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 6px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

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

.app-layout {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background-color: var(--bg-sidebar);
    color: var(--text-color-on-primary);
    padding: calc(var(--spacing-unit) * 2);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    box-shadow: var(--shadow-md);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 1000;
    overflow-y: auto;
    transition: width 0.3s ease;
}

.sidebar-header {
    margin-bottom: calc(var(--spacing-unit) * 3);
    padding-bottom: calc(var(--spacing-unit) * 2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.app-logo {
    font-size: 1.8em;
    font-weight: 700;
    color: var(--primary-color-light);
    text-align: center;
    margin: 0;
}

.sidebar-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-nav .nav-item a {
    display: flex;
    align-items: center;
    padding: calc(var(--spacing-unit) * 1.5) var(--spacing-unit);
    color: #bdc3c7;
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    transition: background-color 0.2s ease, color 0.2s ease;
    font-size: 0.95em;
    white-space: nowrap;
}

.sidebar-nav .nav-item a:hover,
.sidebar-nav .nav-item.active a {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-color-on-primary);
}

.sidebar-nav .nav-item a i {
    margin-right: var(--spacing-unit);
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

.sidebar-footer {
    margin-top: auto;
    padding-top: calc(var(--spacing-unit) * 2);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.api-key-widget label {
    display: block;
    font-size: 0.85em;
    margin-bottom: var(--spacing-unit);
    color: #bdc3c7;
    white-space: nowrap;
}

.api-input-group {
    display: flex;
}

.api-input-group input[type="text"] {
    flex-grow: 1;
    padding: var(--spacing-unit);
    border: none;
    border-radius: var(--border-radius-sm) 0 0 var(--border-radius-sm);
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-color-on-primary);
    font-size: 0.9em;
    min-width: 0;
}

.api-input-group input[type="text"]::placeholder {
    color: #7f8c8d;
}

.api-input-group button {
    padding: var(--spacing-unit) calc(var(--spacing-unit) * 1.5);
    border: none;
    background-color: var(--primary-color);
    color: var(--text-color-on-primary);
    cursor: pointer;
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
    font-size: 0.9em;
    transition: background-color 0.2s ease;
    white-space: nowrap;
}

.api-input-group button:hover {
    background-color: var(--primary-color-dark);
}

.main-content-area {
    flex-grow: 1;
    margin-left: 260px;
    padding: calc(var(--spacing-unit) * 3) calc(var(--spacing-unit) * 4);
    overflow-y: auto;
}

.content-header {
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.content-header h2 {
    font-size: 1.8em;
    margin: 0 0 calc(var(--spacing-unit) * 0.5) 0;
    color: var(--primary-color-dark);
}

.content-header p {
    font-size: 1em;
    color: var(--text-color-secondary);
    margin: 0;
}

.card {
    background-color: var(--bg-card);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    padding: calc(var(--spacing-unit) * 3);
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.upload-workflow .workflow-step {
    margin-bottom: calc(var(--spacing-unit) * 3);
    padding-bottom: calc(var(--spacing-unit) * 2);
    border-bottom: 1px dashed var(--border-color);
}

.upload-workflow .workflow-step:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.step-title {
    display: flex;
    align-items: center;
    font-size: 1.3em;
    color: var(--text-color-primary);
    margin: 0 0 calc(var(--spacing-unit) * 1.5) 0;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    background-color: var(--primary-color);
    color: var(--text-color-on-primary);
    border-radius: 50%;
    font-size: 0.8em;
    font-weight: bold;
    margin-right: var(--spacing-unit);
    flex-shrink: 0;
}

.step-content select,
.step-content input[type="text"] {
    width: 100%;
    padding: calc(var(--spacing-unit) * 1.5);
    font-size: 1em;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background-color: var(--bg-input);
}

.step-content select:focus,
.step-content input[type="text"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(45, 140, 240, 0.2);
}

.file-drop-zone-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.file-drop-zone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 150px;
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius-md);
    padding: calc(var(--spacing-unit) * 2);
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.file-drop-zone:hover {
    border-color: var(--primary-color);
    background-color: #f0f8ff;
}

.file-drop-zone input[type="file"] {
    display: none;
}

.file-drop-zone .file-icon {
    font-size: 3em;
    color: var(--primary-color-light);
    margin-bottom: var(--spacing-unit);
}

.file-drop-zone .drop-zone-text {
    font-size: 1em;
    color: var(--text-color-secondary);
    margin-bottom: var(--spacing-unit);
}

.file-name-indicator {
    font-size: 0.9em;
    color: var(--text-color-placeholder);
    font-style: italic;
    margin-top: var(--spacing-unit);
    word-break: break-all;
}

.file-name-indicator.has-file {
    color: var(--accent-color);
    font-style: normal;
    font-weight: bold;
}

.file-drop-zone.highlight {
    border-color: var(--primary-color-dark);
    background-color: #e6f2ff;
    box-shadow: 0 0 10px rgba(45, 140, 240, 0.3);
}

.action-buttons {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
    flex-wrap: wrap;
}

.action-buttons button {
    flex-grow: 1;
    min-width: 150px;
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 2);
    font-size: 1.05em;
    font-weight: 500;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: background-color 0.2s ease, opacity 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-unit);
}

.action-buttons .button-primary {
    background-color: var(--primary-color);
    color: var(--text-color-on-primary);
}

.action-buttons .button-primary:hover {
    background-color: var(--primary-color-dark);
}

.action-buttons .button-secondary {
    background-color: var(--accent-color);
    color: var(--text-color-on-primary);
}

.action-buttons .button-secondary:hover {
    background-color: #388E3C;
}

.action-buttons button:disabled {
    background-color: var(--bg-disabled);
    color: var(--text-color-secondary);
    cursor: not-allowed;
    opacity: 0.7;
}

#message-and-errors-section {
    margin-top: calc(var(--spacing-unit) * 3);
}

.message-box {
    display: none;
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 2);
    margin-bottom: calc(var(--spacing-unit) * 2);
    border-radius: var(--border-radius-sm);
    font-size: 0.95em;
    border: 1px solid transparent;
}

.message-box.success {
    display: block;
    background-color: #d4edda;
    color: #155724;
    border-color: #c3e6cb;
}

.message-box.error {
    display: block;
    background-color: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
}

.message-box.info {
    display: block;
    background-color: #cce5ff;
    color: #004085;
    border-color: #b8daff;
}

.message-box.warning {
    display: block;
    background-color: #fff3cd;
    color: #856404;
    border-color: #ffeeba;
}

.error-display-area {
    display: none;
    padding: calc(var(--spacing-unit) * 2);
}

.error-data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9em;
}

.error-data-table th,
.error-data-table td {
    padding: var(--spacing-unit);
    border: 1px solid var(--border-color);
    text-align: center;
}

.error-data-table th {
    background-color: #f2f2f2;
    font-weight: 600;
}

.error-data-table tbody tr:nth-child(even) {
    background-color: var(--bg-main);
}

#errorTableContainer {
    overflow-x: auto;
}

#errorTableContainer p {
    font-weight: bold;
    font-size: 16px;
    margin-bottom: 10px;
}

.result-data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9em;
}

.result-data-table th,
.result-data-table td {
    padding: var(--spacing-unit);
    border: 1px solid var(--border-color);
    text-align: center;
}

.result-data-table th {
    width: 10%;
    background-color: #f2f2f2;
    font-weight: 600;
}

.result-data-table tbody tr:nth-child(even) {
    background-color: var(--bg-main);
}

@media (max-width: 768px) {
    .app-layout {
        flex-direction: column;
    }

    .main-content-area {
        padding: calc(var(--spacing-unit) * 2);
        margin-left: 0;
        margin-top: 70px;
    }

    .sidebar {
        width: 100%;
        height: 70px;
        flex-direction: row;
        justify-content: space-around;
        align-items: center;
        padding: calc(var(--spacing-unit) * 1.5) var(--spacing-unit);
        box-shadow: var(--shadow-sm);
        background-color: var(--bg-sidebar);
        overflow: hidden;
    }

    .sidebar .sidebar-header {
        display: none !important;
    }

    .sidebar .sidebar-nav {
        flex-grow: 1;
    }

    .sidebar .sidebar-footer {
        display: flex;
        padding: 0 var(--spacing-unit);
    }

    .sidebar .api-key-widget {
        display: flex;
        align-items: center;
        width: auto;
    }

    .sidebar .api-key-widget label {
        display: none;
    }

    .sidebar .api-input-group input[type="text"] {
        padding: calc(var(--spacing-unit) * 0.75);
        font-size: 0.85em;
        max-width: 150px;
    }

    .sidebar .api-input-group button {
        padding: calc(var(--spacing-unit) * 0.75) var(--spacing-unit);
        font-size: 0.85em;
    }

    .sidebar-footer {
        border-top: none;
    }
}

/* style.css에 추가할 스타일 */

.cleanup-options {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    border-radius: var(--border-radius-md);
    padding: calc(var(--spacing-unit) * 2);
    margin: calc(var(--spacing-unit) * 2) 0;
}

.cleanup-options h3 {
    color: #856404;
    margin: 0 0 calc(var(--spacing-unit) * 2) 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-unit);
}

.cleanup-summary {
    background: rgba(255, 255, 255, 0.7);
    padding: calc(var(--spacing-unit) * 1.5);
    border-radius: var(--border-radius-sm);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.cleanup-summary p {
    margin: calc(var(--spacing-unit) * 0.5) 0;
    font-size: 0.95em;
}

.cleanup-actions {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
    margin-bottom: calc(var(--spacing-unit) * 2);
    flex-wrap: wrap;
}

.cleanup-actions button {
    flex: 1;
    min-width: 200px;
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 2);
    font-size: 1em;
    font-weight: 500;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-unit);
}

.cleanup-actions .button-primary {
    background-color: #28a745;
    color: white;
}

.cleanup-actions .button-primary:hover {
    background-color: #218838;
}

.cleanup-actions .button-secondary {
    background-color: #17a2b8;
    color: white;
}

.cleanup-actions .button-secondary:hover {
    background-color: #138496;
}

.removed-rows-details {
    margin-top: calc(var(--spacing-unit) * 2);
    border-top: 1px solid #ffeaa7;
    padding-top: calc(var(--spacing-unit) * 2);
}

.removed-rows-details summary {
    cursor: pointer;
    font-weight: 500;
    color: #856404;
    padding: var(--spacing-unit) 0;
}

.removed-rows-details summary:hover {
    color: #533f03;
}

.removed-rows-list {
    margin-top: calc(var(--spacing-unit) * 1.5);
    max-height: 200px;
    overflow-y: auto;
    background: rgba(255, 255, 255, 0.5);
    border-radius: var(--border-radius-sm);
    padding: calc(var(--spacing-unit) * 1.5);
}

.removed-row {
    padding: calc(var(--spacing-unit) * 0.5) 0;
    border-bottom: 1px solid #f0f0f0;
    font-size: 0.9em;
    font-family: 'Courier New', monospace;
}

.removed-row:last-child {
    border-bottom: none;
}

.removed-row strong {
    color: #dc3545;
    font-family: var(--font-family);
}

/* 모바일 대응 */
@media (max-width: 768px) {
    .cleanup-actions {
        flex-direction: column;
    }

    .cleanup-actions button {
        min-width: auto;
        width: 100%;
    }
}

/* 메시지 공통 스타일 */
.message {
    padding: 12px 20px;
    margin: 10px 0;
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.message.success {
    background-color: #d4edda;
    color: #155724;
    border-left: 4px solid #28a745;
}

.message.error {
    background-color: #f8d7da;
    color: #721c24;
    border-left: 4px solid #dc3545;
}

.message.warning {
    background-color: #fff3cd;
    color: #856404;
    border-left: 4px solid #ffc107;
}