/* 
 * Product Management Application Styles
 * Base Color: Off-white Beige (#F5F5DC)
 * Primary Accent: #054453 (Dark Teal)
 * Secondary Accent: #D00000 (Red)
 */

/* ==================== RESET & BASE STYLES ==================== */

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

:root {
    --color-base: #F1FAEE;
    --color-primary: #1D3557;
    --color-secondary: #E63946;
    --color-white: #FFFFFF;
    --color-text: #2C3E50;
    --color-text-light: #7F8C8D;
    --color-border: #D4D4C8;
    --color-success: #27AE60;
    --color-warning: #F39C12;
    --color-hover: #043342;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--color-base);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    text-decoration: none;
    color: var(--color-primary);
    transition: color 0.2s ease;
}

a:hover {
    color: var(--color-hover);
}

/* ==================== NAVIGATION ==================== */

.navbar {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 1rem 0;
    box-shadow: var(--shadow-md);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-white);
}

.nav-brand a:hover {
    color: var(--color-base);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-link {
    color: var(--color-white);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.2s ease;
}

.nav-link:hover {
    background-color: var(--color-hover);
    color: var(--color-white);
}

.nav-user-email {
    color: var(--color-base);
    font-weight: 500;
    padding: 0.5rem 1rem;
}

/* ==================== CONTAINER & LAYOUT ==================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.main-content {
    flex: 1;
    padding: 2rem 0;
}

/* ==================== PAGE HEADER ==================== */

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

.page-header h1 {
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--color-text-light);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

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

/* ==================== BUTTONS ==================== */

.btn-primary,
.btn-secondary,
.btn-danger,
.btn-search,
.btn-filter,
.btn-clear,
.btn-export {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary svg,
.btn-secondary svg,
.btn-danger svg,
.btn-export svg {
    width: 16px;
    height: 16px;
    stroke-width: 2.5;
}

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

.btn-primary:hover {
    background-color: var(--color-hover);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--color-white);
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

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

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

.btn-danger:hover {
    background-color: #A00000;
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-search,
.btn-filter {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 0.6rem 1.2rem;
}

.btn-search:hover,
.btn-filter:hover {
    background-color: var(--color-hover);
}

.btn-clear {
    background-color: transparent;
    color: var(--color-text-light);
    border: 1px solid var(--color-border);
    padding: 0.6rem 1.2rem;
}

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

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

.btn-export:hover {
    background-color: #229954;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ==================== EXPORT SECTION ==================== */

.export-section {
    display: flex;
    justify-content: flex-end;
}

/* ==================== MESSAGES ==================== */

.messages-container {
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
}

.message {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.message-success {
    background-color: #D4EDDA;
    color: #155724;
    border: 1px solid #C3E6CB;
}

.message-error {
    background-color: #F8D7DA;
    color: #721C24;
    border: 1px solid #F5C6CB;
}

.message-warning {
    background-color: #FFF3CD;
    color: #856404;
    border: 1px solid #FFEAA7;
}

.message-info {
    background-color: #D1ECF1;
    color: #0C5460;
    border: 1px solid #BEE5EB;
}

/* ==================== FILTER SECTION ==================== */

.filter-section {
    background-color: var(--color-white);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
}

.filter-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.search-bar {
    display: flex;
    gap: 0.5rem;
}

.search-input {
    flex: 1;
    padding: 0.6rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

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

.filter-select {
    padding: 0.6rem 2.5rem 0.6rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: 6px;
    font-size: 1rem;
    background-color: var(--color-white);
    cursor: pointer;
    transition: border-color 0.2s ease;
    appearance: none;
    -webkit-appearance: none;
    -moz-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='%232C3E50' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
}

.filter-select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.filter-input {
    padding: 0.6rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: 6px;
    font-size: 1rem;
    background-color: var(--color-white);
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.filter-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* ==================== MULTI-SELECT DROPDOWN ==================== */

.multi-select-wrapper {
    position: relative;
    display: inline-block;
}

.multi-select-button {
    padding: 0.6rem 2.5rem 0.6rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: 6px;
    font-size: 1rem;
    background-color: var(--color-white);
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 200px;
    text-align: left;
    line-height: 1.5;
    appearance: none;
    -webkit-appearance: none;
    -moz-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='%232C3E50' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
}

.multi-select-button:hover {
    border-color: var(--color-primary);
}

.multi-select-button:focus {
    outline: none;
    border-color: var(--color-primary);
}

.multi-select-button.active {
    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='%232C3E50' d='M6 3L1 8h10z'/%3E%3C/svg%3E");
}

.multi-select-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 0.25rem;
    background-color: var(--color-white);
    border: 2px solid var(--color-border);
    border-radius: 6px;
    box-shadow: var(--shadow-md);
    min-width: 100%;
    max-height: 300px;
    overflow-y: auto;
    z-index: 1000;
}

.multi-select-dropdown.show {
    display: block;
}

.multi-select-option {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: background-color 0.2s ease;
    border-bottom: 1px solid var(--color-border);
}

.multi-select-option:last-child {
    border-bottom: none;
}

.multi-select-option:hover {
    background-color: #FAFAF5;
}

.multi-select-option input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--color-primary);
}

.multi-select-option span {
    flex: 1;
    color: var(--color-text);
    font-size: 0.95rem;
}

/* ==================== PRODUCT COUNT ==================== */

.product-count-export-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.product-count {
    flex: 1;
}

.product-count p {
    color: var(--color-text-light);
    font-weight: 500;
}

/* ==================== TABLE ==================== */

.table-container {
    background-color: var(--color-white);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.product-table {
    width: 100%;
    border-collapse: collapse;
}

.product-table thead {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.product-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.product-table tbody tr {
    border-bottom: 1px solid var(--color-border);
    transition: background-color 0.2s ease;
}

.product-table tbody tr:hover {
    background-color: #FAFAF5;
}

.product-table td {
    padding: 1rem;
    font-size: 0.95rem;
}

.sku-cell {
    font-family: 'Courier New', monospace;
    font-weight: 600;
    color: var(--color-text-light);
}

.name-cell {
    font-weight: 600;
}

.product-link {
    color: var(--color-primary);
    font-weight: 600;
}

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

.price-cell {
    font-weight: 600;
    color: var(--color-primary);
}

.quantity-cell .out-of-stock {
    color: var(--color-secondary);
    font-weight: 600;
}

.status-badge {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-active {
    background-color: #D4EDDA;
    color: #155724;
}

.status-inactive {
    background-color: #F8D7DA;
    color: #721C24;
}

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

.action-btn {
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-white);
    transition: all 0.2s ease;
}

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

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

.action-btn.edit {
    background-color: var(--color-warning);
}

.action-btn.edit:hover {
    background-color: #E67E22;
}

.action-btn.delete {
    background-color: var(--color-secondary);
}

.action-btn.delete:hover {
    background-color: #A00000;
}

/* ==================== TIMESTAMP CELLS ==================== */

.timestamp-cell {
    font-size: 0.9rem;
}

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

.timestamp .date {
    font-weight: 600;
    color: var(--color-text);
}

.timestamp .time {
    color: var(--color-text-light);
    font-size: 0.85rem;
}

/* ==================== HISTORY TABLE ==================== */

.history-table thead th {
    font-size: 0.85rem;
}

.history-table td {
    font-size: 0.9rem;
}

/* ==================== EMPTY STATE ==================== */

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background-color: var(--color-white);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.empty-state h2 {
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--color-text-light);
    margin-bottom: 1.5rem;
}

/* ==================== FORM STYLES ==================== */

.form-container {
    background-color: var(--color-white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    max-width: 800px;
}

#new-category-container {
    padding: 0.75rem;
    background-color: var(--color-base);
    border-radius: 6px;
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
}

#new-category-container label {
    color: var(--color-text);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    display: block;
}

.product-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    color: var(--color-text);
    font-size: 0.95rem;
}

.required {
    color: var(--color-secondary);
}

.form-input,
.form-textarea {
    padding: 0.75rem;
    border: 2px solid var(--color-border);
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s ease;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.checkbox-group {
    flex-direction: row;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-weight: 500;
}

.form-checkbox {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--color-primary);
}

.form-group-error .form-input,
.form-group-error .form-textarea {
    border-color: var(--color-secondary);
}

.error-message {
    color: var(--color-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.form-errors {
    padding: 1rem;
    background-color: #F8D7DA;
    color: #721C24;
    border: 1px solid #F5C6CB;
    border-radius: 6px;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

/* ==================== DETAIL VIEW ==================== */

.detail-container {
    background-color: var(--color-white);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.detail-card {
    padding: 2rem;
}

.detail-section {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--color-border);
}

.detail-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.detail-section h2 {
    color: var(--color-primary);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.detail-label {
    font-weight: 600;
    color: var(--color-text-light);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.detail-value {
    font-size: 1.1rem;
    color: var(--color-text);
}

.price-highlight {
    color: var(--color-primary);
    font-weight: 700;
    font-size: 1.5rem;
}

.stock-status {
    color: var(--color-secondary);
    font-weight: 600;
    font-size: 0.9rem;
}

.description-text {
    color: var(--color-text);
    line-height: 1.8;
}

.back-link {
    margin-top: 2rem;
}

/* ==================== CONFIRM DELETE ==================== */

.confirm-delete-container {
    display: flex;
    justify-content: center;
    padding: 2rem 0;
}

.confirm-card {
    background-color: var(--color-white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    max-width: 600px;
    text-align: center;
}

.warning-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.confirm-card h2 {
    color: var(--color-secondary);
    margin-bottom: 1.5rem;
}

.product-info-box {
    background-color: var(--color-base);
    padding: 1.5rem;
    border-radius: 6px;
    margin: 1.5rem 0;
    text-align: left;
}

.product-info-box p {
    margin-bottom: 0.5rem;
}

.warning-text {
    color: var(--color-text-light);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.delete-form .form-actions {
    justify-content: center;
}

/* ==================== FOOTER ==================== */

.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    text-align: center;
    padding: 1.5rem 0;
    margin-top: auto;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer p {
    margin: 0;
    font-size: 0.95rem;
}

.footer-divider {
    color: rgba(255, 255, 255, 0.4);
    font-weight: 300;
}

.linkedin-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: 0.5rem;
    color: var(--color-white);
    transition: all 0.2s ease;
    vertical-align: middle;
}

.linkedin-link:hover {
    color: var(--color-base);
    transform: translateY(-2px);
}

.linkedin-icon {
    display: block;
}

/* ==================== RESPONSIVE DESIGN ==================== */

@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }

    .nav-links {
        gap: 0.75rem;
    }

    .nav-link {
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .header-content {
        flex-direction: column;
        gap: 1rem;
    }

    .form-grid,
    .detail-grid {
        grid-template-columns: 1fr;
    }

    .table-container {
        overflow-x: auto;
    }

    .product-table {
        min-width: 800px;
    }

    .filters {
        flex-direction: column;
    }

    .filter-select {
        width: 100%;
    }
}