/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #f21f52;
    --secondary-color: #575c62;
    --success-color: #059669;
    --error-color: #dc2626;
    --warning-color: #d97706;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --border-color: #e5e7eb;
    --shadow: 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);
}

body {
    font-family: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    min-height: 100vh;
    color: var(--text-primary);
}

/* App Layout */
.app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main {
    flex: 1;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    height: 40px;
    width: auto;
}

.brand-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

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

.btn-primary:hover {
    background: var(--secondary-color);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: #f3f4f6;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.link-button {
    background: none;
    border: none;
    color: var(--primary-color);
    cursor: pointer;
    font-size: 0.875rem;
    text-decoration: none;
    padding: 0.5rem;
}

.link-button:hover {
    text-decoration: underline;
}

/* Authentication */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 100px);
    padding: 2rem;
}

.auth-card {
    background: var(--bg-primary);
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
    padding: 2rem;
    width: 100%;
    max-width: 400px;
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.auth-subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.auth-form {
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.auth-footer {
    text-align: center;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

/* Dashboard */
.dashboard {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
    padding: 2rem;
}

.dashboard-header {
    margin-bottom: 2rem;
}

.dashboard-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.dashboard-header p {
    color: var(--text-secondary);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.card {
    background: var(--bg-primary);
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.card.full-width {
    grid-column: 1 / -1;
}

.card-header {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-content {
    padding: 1.5rem;
}

/* File Upload */
.file-upload {
    width: 100%;
}

.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: 0.75rem;
    padding: 2rem;
    text-align: center;
    transition: all 0.2s ease;
    cursor: pointer;
    position: relative;
}

.upload-zone:hover,
.upload-zone.drag-active {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.upload-zone.uploading {
    pointer-events: none;
    opacity: 0.7;
}

.upload-zone input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.upload-zone .upload-icon {
    font-size: 3rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.upload-zone:hover .upload-icon,
.upload-zone.drag-active .upload-icon {
    color: var(--primary-color);
}

.upload-zone h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.upload-zone p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.upload-info {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.upload-info p {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.upload-progress {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.progress-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    animation: spin 1s linear infinite;
    display: flex;
    align-items: center;
    justify-content: center;
}

.progress-text {
    font-weight: 600;
    color: var(--primary-color);
}

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

/* File List */
.file-list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.file-count {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.file-table {
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    overflow: hidden;
}

.file-table-header {
    background: var(--bg-secondary);
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 1rem;
    padding: 0.75rem 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.file-row {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 1rem;
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--border-color);
    transition: background-color 0.2s ease;
}

.file-row:hover {
    background: var(--bg-secondary);
}

.file-name {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
    min-width: 0;
}

.file-name span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-name i {
    color: var(--primary-color);
    flex-shrink: 0;
}

.file-size,
.file-date {
    font-size: 0.875rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
    opacity: 0.5;
}

.empty-state h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

/* Loading States */
.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    color: var(--text-secondary);
}

.spinner i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.loading-container {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.loading-container i {
    font-size: 2rem;
    margin-bottom: 1rem;
    display: block;
    color: var(--primary-color);
}

/* Message States */
.error-banner,
.error-message {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: var(--error-color);
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.success-message {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    color: var(--success-color);
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .main {
        padding: 1rem;
    }

    .header-content {
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .user-menu {
        flex-direction: column;
        gap: 0.5rem;
    }

    .dashboard {
        padding: 1rem;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .card-header {
        padding: 1rem;
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-start;
    }

    .card-content {
        padding: 1rem;
    }

    .file-table-header,
    .file-row {
        grid-template-columns: 2fr 1fr;
        gap: 0.5rem;
    }

    .file-date {
        display: none;
    }

    .auth-container {
        padding: 1rem;
    }

    .auth-card {
        padding: 1.5rem;
    }
}

/* ===== DASHBOARD TABS STYLES ===== */
.dashboard-tabs {
    display: flex;
    gap: 0;
    margin: 2rem 0 1rem 0;
    border-bottom: 2px solid var(--border-color);
    overflow-x: auto;
}

.tab-button {
    background: transparent;
    border: none;
    padding: 1rem 1.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    transition: all 0.2s ease;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tab-button:hover {
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.tab-button.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.tab-button i {
    font-size: 1rem;
}

.tab-content {
    margin-top: 2rem;
}

/* ===== CSV TABLE EDITOR STYLES ===== */
.csv-table-editor {
    width: 100%;
}

.csv-table-editor.loading,
.csv-table-editor.error {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    text-align: center;
}

.loading-content,
.error-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary);
}

.loading-content i {
    font-size: 2rem;
    color: var(--primary-color);
}

.error-content i {
    font-size: 2rem;
    color: var(--danger-color);
}

.table-editor-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 0.5rem;
}

.header-info h4 {
    margin: 0 0 0.25rem 0;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.header-info p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.unsaved-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    color: #f59e0b;
    margin-top: 0.25rem;
}

.unsaved-indicator i {
    font-size: 0.5rem;
}

.header-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.btn-sm {
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
}

.csv-table-container {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    overflow: auto;
    max-height: 60vh;
}

.csv-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.csv-table th,
.csv-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    vertical-align: top;
}

.csv-table th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-primary);
    position: sticky;
    top: 0;
    z-index: 10;
}

.row-actions-header {
    width: 120px;
    min-width: 120px;
}

.csv-header {
    min-width: 150px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.csv-row {
    transition: background-color 0.2s ease;
}

.csv-row:hover {
    background: rgba(37, 99, 235, 0.02);
}

.row-actions {
    width: 120px;
    min-width: 120px;
}

.action-buttons {
    display: flex;
    gap: 0.25rem;
    flex-wrap: wrap;
}

.btn-action {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.25rem;
    padding: 0.25rem;
    cursor: pointer;
    transition: all 0.2s ease;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
}

.btn-action:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

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

.btn-action:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

.btn-action:disabled:hover {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-color: var(--border-color);
}

.csv-cell {
    min-width: 150px;
    padding: 0.5rem;
}

.csv-input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 0.25rem;
    font-size: 0.875rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color 0.2s ease;
}

.csv-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
}

.table-editor-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1.5rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 0.5rem;
}

.footer-info p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.footer-actions {
    display: flex;
    gap: 1rem;
}

/* ===== VALIDATION RESULTS STYLES ===== */
.validation-results {
    margin: 1.5rem 0;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    overflow: hidden;
    background: var(--bg-primary);
}

.validation-summary {
    padding: 1.5rem;
}

.validation-summary.success {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.1), rgba(34, 197, 94, 0.05));
    border-bottom: 1px solid rgba(34, 197, 94, 0.2);
}

.validation-summary.error {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(239, 68, 68, 0.05));
    border-bottom: 1px solid rgba(239, 68, 68, 0.2);
}

.summary-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.summary-header i {
    font-size: 1.5rem;
}

.validation-summary.success .summary-header i {
    color: var(--success-color);
}

.validation-summary.error .summary-header i {
    color: var(--danger-color);
}

.summary-header h4 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.summary-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 1rem;
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-value {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.stat-value.success {
    color: var(--success-color);
}

.stat-value.error {
    color: var(--danger-color);
}

.summary-message {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.validation-errors,
.validation-warnings {
    border-top: 1px solid var(--border-color);
}

.errors-header,
.warnings-header {
    padding: 1rem 1.5rem;
    background: var(--bg-secondary);
}

.errors-header h5,
.warnings-header h5 {
    margin: 0 0 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.errors-header p,
.warnings-header p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.errors-list,
.warnings-list {
    padding: 0 1.5rem 1.5rem 1.5rem;
}

.error-group,
.warning-group {
    margin-bottom: 1.5rem;
}

.error-group:last-child {
    margin-bottom: 0;
}

.error-group-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: rgba(107, 114, 128, 0.1);
    border: 1px solid rgba(107, 114, 128, 0.2);
    border-radius: 0.375rem;
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.error-item,
.warning-item {
    margin-bottom: 0.75rem;
    border-radius: 0.375rem;
    overflow: hidden;
}

.error-item:last-child,
.warning-item:last-child {
    margin-bottom: 0;
}

.validation-error {
    border: 1px solid rgba(239, 68, 68, 0.3);
    background: rgba(239, 68, 68, 0.05);
}

.validation-warning {
    border: 1px solid rgba(245, 158, 11, 0.3);
    background: rgba(245, 158, 11, 0.05);
}

.error-content,
.warning-content {
    padding: 1rem;
}

.error-message,
.warning-content {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.error-message:last-child,
.warning-content:last-child {
    margin-bottom: 0;
}

.error-message i,
.warning-content i {
    margin-top: 0.125rem;
    flex-shrink: 0;
}

.validation-error .error-message i {
    color: var(--danger-color);
}

.validation-warning .warning-content i {
    color: #f59e0b;
}

.error-message span,
.warning-content span {
    color: var(--text-primary);
    font-weight: 500;
}

.error-details {
    margin-top: 0.5rem;
    padding: 0.75rem;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 0.25rem;
    font-size: 0.875rem;
}

.error-details div {
    margin-bottom: 0.25rem;
}

.error-details div:last-child {
    margin-bottom: 0;
}

.error-fields {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.validation-actions {
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* Responsive styles for table editor */
@media (max-width: 1024px) {
    .table-editor-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }

    .header-actions {
        width: 100%;
        justify-content: flex-start;
    }

    .csv-table-container {
        max-height: 50vh;
    }

    .action-buttons {
        flex-direction: column;
    }

    .table-editor-footer {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }

    .footer-actions {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .dashboard-tabs {
        margin: 1rem 0;
    }

    .tab-button {
        padding: 0.75rem 1rem;
        font-size: 0.75rem;
    }

    .csv-header,
    .csv-cell {
        min-width: 120px;
    }

    .row-actions-header,
    .row-actions {
        width: 100px;
        min-width: 100px;
    }

    .validation-results {
        margin: 1rem 0;
    }

    .validation-summary {
        padding: 1rem;
    }

    .summary-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .errors-list,
    .warnings-list {
        padding: 0 1rem 1rem 1rem;
    }

    .validation-actions {
        padding: 1rem;
        flex-direction: column;
    }

    .validation-actions .btn {
        width: 100%;
        justify-content: center;
    }
}