/*
 * Wire Solved - System Builder Styles
 * Tab navigation and multi-circuit management UI
 */

/* ========================================
   Tab Navigation
   ======================================== */

.tab-navigation {
    display: flex;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
    border-bottom: 2px solid var(--color-border-light);
    background-color: var(--color-bg-white);
    padding: var(--space-xs) var(--space-xs) 0 var(--space-xs);
}

.tab-button {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-family: var(--font-primary);
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    transition: all 0.2s ease;
    position: relative;
    top: 2px; /* Align with border-bottom of parent */
}

.tab-button:hover {
    color: var(--color-text-primary);
    background-color: var(--color-bg-light);
}

.tab-button.active {
    color: var(--color-primary-dark);
    border-bottom-color: var(--color-primary);
    font-weight: var(--font-weight-bold);
}

.tab-icon {
    font-size: 1.25rem;
    line-height: 1;
}

.tab-label {
    line-height: 1;
}

/* ========================================
   Tab Content
   ======================================== */

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   Placeholder Styles (temporary)
   ======================================== */

.system-builder-placeholder,
.saved-designs-placeholder {
    padding: var(--space-xl);
    text-align: center;
    color: var(--color-text-secondary);
}

.system-builder-placeholder p:first-child,
.saved-designs-placeholder p:first-child {
    font-size: var(--font-size-h3);
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

/* ========================================
   System Builder UI
   ======================================== */

/* System Header */
.system-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
}

.system-info {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex: 1;
}

.system-header-actions {
    display: flex;
    gap: var(--space-sm);
}

.system-name-input {
    font-size: var(--font-size-h3);
    font-weight: var(--font-weight-bold);
    border: 2px solid transparent;
    border-bottom: 2px solid var(--color-border-light);
    padding: var(--space-xs);
    background: transparent;
    transition: border-color 0.2s ease;
    flex: 1;
    max-width: 400px;
}

.system-name-input:hover {
    border-bottom-color: var(--color-border);
}

.system-name-input:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    border-bottom-color: var(--color-accent);
}

.system-voltage-select {
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: var(--font-size-body);
    background-color: var(--color-bg-white);
    cursor: pointer;
}

/* Circuits Container */
#circuitsContainer {
    min-height: 200px;
}

.empty-state {
    padding: var(--space-xl);
    text-align: center;
    color: var(--color-text-secondary);
}

.empty-state p {
    font-size: var(--font-size-body);
    margin: 0;
}

/* Circuit Table */
.circuit-table {
    width: 100%;
    border-collapse: collapse;
}

.circuit-table thead {
    background-color: var(--color-bg-light);
    border-bottom: 2px solid var(--color-border);
}

.circuit-table th {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-small);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.circuit-table td {
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--color-border-light);
}

.circuit-table tbody tr:hover {
    background-color: var(--color-bg-light);
}

.circuit-name {
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.circuit-category {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: var(--font-size-tiny);
    font-weight: var(--font-weight-medium);
    text-transform: capitalize;
    background-color: var(--color-bg-light);
    color: var(--color-text-secondary);
}

.circuit-actions {
    display: flex;
    gap: var(--space-xs);
}

.circuit-actions button {
    padding: 4px 8px;
    font-size: var(--font-size-tiny);
    border: none;
    background: none;
    cursor: pointer;
    color: var(--color-text-secondary);
    transition: color 0.2s ease;
}

.circuit-actions button:hover {
    color: var(--color-text-primary);
}

.circuit-actions .edit-btn:hover {
    color: var(--color-primary-dark);
}

.circuit-actions .delete-btn:hover {
    color: var(--color-error);
}

/* System Totals */
.totals-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-md);
    padding: var(--space-md);
}

.total-item {
    text-align: center;
    padding: var(--space-sm);
}

.total-label {
    font-size: var(--font-size-small);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xs);
}

.total-value {
    font-size: var(--font-size-h2);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary-dark);
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 600px) {
    .tab-navigation {
        gap: 0;
    }

    .tab-button {
        flex: 1;
        justify-content: center;
        padding: var(--space-sm);
        font-size: var(--font-size-small);
    }

    .tab-label {
        display: none; /* Hide labels on mobile, show icons only */
    }

    .tab-icon {
        font-size: 1.5rem;
    }
}

@media (min-width: 601px) and (max-width: 768px) {
    .tab-button {
        font-size: var(--font-size-small);
        padding: var(--space-sm);
    }
}

/* System Builder Responsive */
@media (max-width: 768px) {
    .system-header {
        flex-direction: column;
        align-items: stretch;
    }

    .system-info {
        flex-direction: column;
        align-items: stretch;
    }

    .system-name-input {
        max-width: none;
    }

    /* Make circuit table scrollable on mobile */
    .circuit-table-wrapper {
        overflow-x: auto;
    }

    .circuit-table {
        min-width: 600px;
    }

    .totals-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========================================
   Circuit Modal
   ======================================== */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
}

.modal-content {
    position: relative;
    background-color: var(--color-bg-white);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    z-index: 1001;
    animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-large {
    max-width: 900px;
}

@media (max-width: 900px) {
    .modal-large {
        max-width: 95%;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border-light);
}

.modal-title {
    margin: 0;
    font-size: var(--font-size-h2);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    line-height: 1;
    cursor: pointer;
    color: var(--color-text-secondary);
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background-color: var(--color-bg-light);
    color: var(--color-text-primary);
}

.modal-body {
    padding: var(--space-lg);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
    padding: var(--space-lg);
    border-top: 1px solid var(--color-border-light);
    background-color: var(--color-bg-light);
}

/* Modal Form Styles (reuse existing form-group from components.css) */
#circuitForm .form-group {
    margin-bottom: var(--space-md);
}

/* Modal Responsive */
@media (max-width: 600px) {
    .modal-content {
        width: 100%;
        height: 100%;
        max-height: 100vh;
        border-radius: 0;
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        padding: var(--space-md);
    }
}

/* ========================================
   PDF Export Modal Styles
   ======================================== */

.pdf-export-system-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm);
    background-color: var(--color-bg-light);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
}

.pdf-export-system-info strong {
    font-size: var(--font-size-h3);
    color: var(--color-text-primary);
}

.pdf-export-system-info span {
    font-size: var(--font-size-small);
    color: var(--color-text-secondary);
    padding: 4px 8px;
    background-color: var(--color-bg-white);
    border-radius: 4px;
}

.pdf-export-options {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.pdf-option-label {
    display: flex;
    gap: var(--space-sm);
    cursor: pointer;
    padding: var(--space-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.pdf-option-label:hover {
    background-color: var(--color-bg-light);
    border-color: var(--color-primary);
}

.pdf-option-label input[type="checkbox"] {
    margin-top: 2px;
    cursor: pointer;
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.pdf-option-label input[type="checkbox"]:disabled {
    cursor: not-allowed;
}

.pdf-option-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
}

.pdf-option-text strong {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-body);
}

.pdf-option-text small {
    color: var(--color-text-secondary);
    font-size: var(--font-size-small);
    line-height: 1.4;
}

.pdf-export-advanced {
    padding-top: var(--space-sm);
    border-top: 1px solid var(--color-border-light);
}

.modal-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    font-size: var(--font-size-small);
}

/* PDF Button in System Cards */
.btn-pdf {
    background-color: var(--color-accent);
    color: white;
    border: none;
    transition: background-color 0.2s ease;
}

.btn-pdf:hover {
    background-color: var(--color-accent-hover);
}

/* Loading State */
#generatePdf.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.8;
}

#generatePdf.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    right: var(--space-sm);
    top: 50%;
    transform: translateY(-50%);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: translateY(-50%) rotate(360deg);
    }
}

/* Mobile Responsive */
@media (max-width: 600px) {
    .pdf-export-system-info {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
    }

    .pdf-option-label {
        padding: var(--space-xs);
    }

    .pdf-option-text strong {
        font-size: var(--font-size-small);
    }

    .pdf-option-text small {
        font-size: var(--font-size-tiny);
    }
}

/* ========================================
   Saved Designs Tab
   ======================================== */

.saved-designs-actions {
    display: flex;
    gap: var(--space-sm);
}

#savedDesignsContainer {
    padding: var(--space-md);
}

.saved-designs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-md);
}

.system-card {
    border: 1px solid var(--color-border-light);
    border-radius: 8px;
    padding: var(--space-md);
    background-color: var(--color-bg-white);
    transition: all 0.2s ease;
    position: relative;
}

.system-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 2px 8px rgba(0, 87, 164, 0.1);
}

.system-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-sm);
    gap: var(--space-sm);
}

.system-card-title {
    font-size: var(--font-size-h3);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin: 0;
    word-break: break-word;
    flex: 1;
}

.system-card-voltage {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    background-color: var(--color-bg-light);
    border-radius: 4px;
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    white-space: nowrap;
}

.system-card-meta {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
    font-size: var(--font-size-small);
    color: var(--color-text-secondary);
}

.system-card-stat {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.system-card-stat-label {
    font-weight: var(--font-weight-medium);
}

.system-card-stat-value {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-bold);
}

.system-card-dates {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding-top: var(--space-sm);
    margin-top: var(--space-sm);
    border-top: 1px solid var(--color-border-light);
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
}

.system-card-actions {
    display: flex;
    gap: var(--space-xs);
    margin-top: var(--space-md);
}

.system-card-actions .btn {
    flex: 1;
    font-size: var(--font-size-small);
    padding: var(--space-xs) var(--space-sm);
}

.btn-load {
    background-color: var(--color-primary);
    color: white;
    border: none;
}

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

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

.btn-export:hover {
    background-color: var(--color-bg-medium);
}

.btn-delete {
    background-color: white;
    color: var(--color-error);
    border: 1px solid var(--color-error);
}

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

/* Saved Designs Empty State */
#savedDesignsContainer .empty-state {
    text-align: center;
    padding: var(--space-xxl) var(--space-md);
}

/* Saved Designs Controls */
.saved-designs-controls {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.search-filter-group {
    display: flex;
    gap: var(--space-sm);
    flex: 1;
}

.system-search-input {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-family: var(--font-primary);
    font-size: var(--font-size-body);
}

.system-search-input:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    border-color: var(--color-accent);
}

.voltage-filter-select {
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-family: var(--font-primary);
    font-size: var(--font-size-body);
    background-color: white;
    cursor: pointer;
}

.voltage-filter-select:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    border-color: var(--color-accent);
}

/* Duplicate Button */
.btn-duplicate {
    background-color: var(--color-bg-light);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn-duplicate:hover {
    background-color: var(--color-bg-medium);
    border-color: var(--color-primary);
}

/* Delete All Button */
.btn-delete-all {
    background-color: white;
    color: var(--color-error);
    border: 1px solid var(--color-error);
}

.btn-delete-all:hover {
    background-color: var(--color-error);
    color: white;
}

/* Templates Section */
.templates-card {
    margin-bottom: var(--space-lg);
}

.templates-card .card-header small {
    display: block;
    margin-top: var(--space-xs);
    color: var(--color-text-secondary);
    font-size: var(--font-size-small);
}

.templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
    padding: var(--space-md);
}

.template-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-md);
    border: 2px solid var(--color-border-light);
    border-radius: 8px;
    background-color: var(--color-bg-white);
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: var(--font-primary);
    text-align: center;
}

.template-btn:hover {
    border-color: var(--color-primary);
    background-color: var(--color-bg-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 87, 164, 0.15);
}

.template-icon {
    font-size: 2rem;
    line-height: 1;
}

.template-name {
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.template-desc {
    font-size: var(--font-size-small);
    color: var(--color-text-secondary);
}

/* Responsive Saved Designs */
@media (max-width: 768px) {
    .saved-designs-grid {
        grid-template-columns: 1fr;
    }

    .saved-designs-controls {
        gap: var(--space-sm);
    }

    .search-filter-group {
        flex-direction: column;
    }

    .saved-designs-actions {
        flex-wrap: wrap;
        gap: var(--space-xs);
    }

    .saved-designs-actions button {
        flex: 1 1 calc(50% - var(--space-xs) / 2);
        min-width: 120px;
    }

    .templates-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .system-header-actions {
        flex-wrap: wrap;
    }

    .system-header-actions button {
        flex: 1 1 auto;
    }
}

@media (max-width: 600px) {
    .system-card-actions {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--space-xs);
    }

    .system-card-actions .btn {
        width: 100%;
    }

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

    .saved-designs-actions button {
        flex-basis: 100%;
    }
}