/* Unified Responsive Tab System */
/* This replaces the complex desktop/mobile cloning system with a single responsive interface */

/* Base unified tab styles for all screen sizes */
.unified-tabs-nav {
    transition: all 0.3s ease;
}

.unified-tab-button {
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

/* Tools & Resources sidebar styling */
.list-group-item-action {
    transition: all 0.3s ease;
    border: none;
}

.list-group-item-action:hover {
    background-color: #17a2b8;
    color: white;
    transform: translateX(5px);
}

.list-group-item-action:focus {
    box-shadow: 0 0 0 0.2rem rgba(23, 162, 184, 0.25);
}

/* Ensure icons are properly spaced */
.list-group-item-action i {
    width: 20px;
    text-align: center;
}

/* Help Tab Styling - moved to header */
#help-tab-content {
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    border-bottom: 2px solid #28a745;
}

#help-tab-toggle {
    transition: background-color 0.2s ease;
    border: none !important;
}

#help-tab-toggle:hover {
    background-color: rgba(25, 135, 84, 0.1) !important;
    color: #28a745 !important;
}

#help-tab-toggle:focus {
    box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}

#help-tab-close {
    transition: all 0.2s ease;
}

#help-tab-close:hover {
    background-color: rgba(0, 0, 0, 0.1);
    transform: scale(1.1);
}

/* Animation for instructions box movement */
@keyframes slideDown {
    from {
        transform: translateY(-10px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

#instructions-box {
    animation: slideDown 0.5s ease-out;
}

/* Tab toggle functionality styling */
.nav-link {
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-link:hover {
    transform: translateY(-1px);
}

/* Horizontal nav tabs styling */
.nav-tabs .nav-link {
    background-color: #495057;
    border-color: #495057;
    color: #e9ecef;
    border-radius: 0.5rem 0.5rem 0 0;
    margin-right: 0.25rem;
    transition: all 0.3s ease;
}

.nav-tabs .nav-link:hover {
    background-color: #17a2b8;
    border-color: #17a2b8;
    color: white;
}

.nav-tabs .nav-link.active {
    background-color: #17a2b8;
    border-color: #17a2b8;
    color: white;
}

.nav-tabs {
    border-bottom: 2px solid #17a2b8;
}

.unified-tab-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.unified-tab-button:hover::before {
    left: 100%;
}

.unified-tab-pane {
    min-height: 200px;
    animation: fadeIn 0.3s ease-in-out;
}

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

/* Mobile-first approach (up to 768px) */
@media (max-width: 768px) {
    .unified-tabs-nav {
        flex-direction: column;
        width: 100%;
    }
    
    .unified-tabs-nav .nav-item {
        width: 100%;
        margin-bottom: 0.5rem;
    }
    
    .unified-tab-button {
        width: 100%;
        text-align: center;
        padding: 1rem;
        font-size: 1rem;
        border-radius: 8px;
    }
    
    .unified-tab-button i {
        font-size: 1.2rem;
        margin-right: 0.5rem;
    }
    
    /* Hide desktop elements on mobile */
    .desktop-enhanced-layout,
    .desktop-input-sidebar,
    .desktop-results-main,
    #inputTabsDesktop,
    .tab-dropdown-content {
        display: none !important;
    }
}

/* Tablet layout (769px to 1023px) */
@media (min-width: 769px) and (max-width: 1023px) {
    .unified-tabs-nav {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .unified-tabs-nav .nav-item {
        flex: 0 0 auto;
        margin-bottom: 0.5rem;
    }
    
    .unified-tab-button {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
        white-space: nowrap;
        border-radius: 8px;
        min-width: 140px;
    }
    
    /* Container adjustments for tablet */
    .container {
        max-width: 95%;
        padding-left: 1rem;
        padding-right: 1rem;
    }
}

/* Desktop layout (1024px and up) */
@media (min-width: 1024px) {
    /* Create responsive grid layout */
    .container {
        max-width: 1400px;
    }
    
    .main-responsive-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 2rem;
        margin-top: 2rem;
    }
    
    /* Unified tabs positioned at top */
    .unified-tabs-nav {
        flex-direction: row;
        justify-content: center;
        gap: 1rem;
        margin-bottom: 2rem;
        background: var(--tuning-bg-panel);
        padding: 1rem;
        border-radius: 12px;
        border: 1px solid var(--tuning-border);
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    }
    
    .unified-tabs-nav .nav-item {
        margin: 0;
    }
    
    .unified-tab-button {
        background: linear-gradient(135deg, var(--tuning-bg-secondary), #3a3a3a);
        border: 1px solid var(--tuning-border);
        border-radius: 10px;
        color: var(--tuning-text-primary);
        padding: 1rem 2rem;
        font-size: 1rem;
        font-weight: 600;
        min-width: 160px;
        text-align: center;
        cursor: pointer;
        transition: all 0.3s ease;
    }
    
    .unified-tab-button:hover {
        background: linear-gradient(135deg, var(--tuning-accent-dark), var(--tuning-accent));
        color: white;
        transform: translateY(-3px);
        box-shadow: 0 8px 25px rgba(0, 212, 255, 0.4);
        border-color: var(--tuning-accent);
    }
    
    .unified-tab-button.active {
        background: linear-gradient(135deg, var(--tuning-accent), rgba(0, 212, 255, 0.9));
        color: white;
        border-color: var(--tuning-accent);
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(0, 212, 255, 0.5);
    }
    
    .unified-tab-button i {
        font-size: 1.1rem;
        margin-right: 0.75rem;
    }
    
    /* Content area styling */
    .unified-tabs-content {
        background: var(--tuning-bg-panel);
        border: 1px solid var(--tuning-border);
        border-radius: 12px;
        padding: 2rem;
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
    }
    
    .unified-tab-pane {
        min-height: 400px;
    }
    
    /* Performance results section */
    #performanceResultsSection {
        background: var(--tuning-bg-panel);
        border: 1px solid var(--tuning-border);
        border-radius: 12px;
        padding: 2rem;
        margin-bottom: 2rem;
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
    }
}

/* Large desktop (1280px and up) */
@media (min-width: 1280px) {
    .main-responsive-grid {
        gap: 3rem;
    }
    
    .unified-tabs-nav {
        gap: 1.5rem;
        padding: 1.5rem;
        margin-bottom: 3rem;
    }
    
    .unified-tab-button {
        padding: 1.25rem 2.5rem;
        font-size: 1.1rem;
        min-width: 180px;
    }
    
    .unified-tab-button i {
        font-size: 1.2rem;
        margin-right: 1rem;
    }
    
    .unified-tabs-content {
        padding: 3rem;
    }
    
    #performanceResultsSection {
        padding: 3rem;
    }
}

/* Extra large desktop (1440px and up) */
@media (min-width: 1440px) {
    .container {
        max-width: 1600px;
    }
    
    .main-responsive-grid {
        gap: 4rem;
    }
    
    .unified-tabs-nav {
        gap: 2rem;
        padding: 2rem;
    }
    
    .unified-tab-button {
        padding: 1.5rem 3rem;
        font-size: 1.2rem;
        min-width: 200px;
    }
}

/* Override old desktop styles */
@media (min-width: 1024px) {
    /* Hide old desktop elements */
    .desktop-enhanced-layout,
    .desktop-input-sidebar,
    .desktop-results-main,
    #inputTabsDesktop,
    .tab-dropdown-content {
        display: none !important;
    }
}

/* Dark theme enhancements for unified system */
.unified-tabs-nav {
    --tab-bg: var(--tuning-bg-secondary, #343a40);
    --tab-border: var(--tuning-border, #495057);
    --tab-text: var(--tuning-text-primary, #ffffff);
    --tab-accent: var(--tuning-accent, #00d4ff);
}

/* Loading states */
.unified-tab-pane.loading {
    position: relative;
    min-height: 200px;
}

.unified-tab-pane.loading::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 3px solid var(--tuning-border);
    border-top: 3px solid var(--tuning-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Ensure proper focus states for accessibility */
.unified-tab-button:focus {
    outline: 2px solid var(--tuning-accent);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .unified-tabs-nav {
        display: none;
    }
    
    .unified-tabs-content .tab-pane {
        display: block !important;
        opacity: 1 !important;
    }
}