/* Global Resets */
button, input, select, textarea {
    font-family: inherit;
}

/* App Grid Layout */
#app-root {
    display: grid;
    grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
    grid-template-rows: auto 1fr;
    width: 100%;
    height: 100%;
    position: relative;
}

#app-root.landing,
#app-root.showing-examples {
    grid-template-columns: 0px minmax(0, 1fr);
    grid-template-rows: auto 1fr;
}

#app-root.landing #sidebar,
#app-root.showing-examples #sidebar {
    display: none;
}

#app-root.landing #workspace-footer,
#app-root.showing-examples #workspace-footer {
    display: none;
}

/* Belt-and-suspenders: while on the landing screen, force every
   main-workspace view container hidden regardless of the view-hidden
   class JS happens to have set. This prevents a startup/clear-input
   race (mantiq_setView firing before the landing class settles) from
   leaving simulation/circuit/etc. panels visible behind the hero. */
#app-root.landing #canvas,
#app-root.landing #truthtable-container,
#app-root.landing #kmap-container,
#app-root.landing #solution-container,
#app-root.landing #verilog-container,
#app-root.landing #svg-circuit-container,
#app-root.landing #simulation-container {
    display: none !important;
}

/* ==========================================================================
   Sidebar Navigation — fixed icon-only strip
   ========================================================================== */
#sidebar {
    grid-column: 1;
    grid-row: 2;
    background: var(--bg-tertiary);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px 0;
    z-index: 10;
    overflow: visible;
}

.nav-links {
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: 100%;
    align-items: center;
    flex-grow: 1;
    padding: 0 8px;
}

.nav-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    width: 54px;
    height: 46px;
    border-radius: 14px;
    cursor: pointer;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0;
    line-height: 1;
}

.nav-icon-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 36px;
    border-radius: 12px;
    transition: background-color 0.2s ease, color 0.2s ease;
    flex-shrink: 0;
}

.nav-btn svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-fast);
    display: block;
}

@media (hover: hover) and (pointer: fine) {
    .nav-btn:hover .nav-icon-wrapper {
        background-color: rgba(255, 255, 255, 0.08);
        color: var(--text-primary);
    }

    .nav-btn:hover svg {
        transform: scale(1.08);
    }
}

.nav-btn.active .nav-icon-wrapper {
    background-color: var(--accent-light);
    color: var(--accent);
}

.nav-btn.active svg {
    stroke-width: 2.2px;
}

/* Tooltips */
.nav-btn .tooltip {
    position: absolute;
    left: calc(100% + 10px);
    top: 50%;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 500;
    padding: 6px 11px;
    border-radius: 6px;
    border: 1px solid var(--border);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-50%) translateX(-4px);
    transition: opacity 0.15s ease, transform 0.15s ease;
    z-index: 1000;
}

@media (hover: hover) and (pointer: fine) {
    .nav-btn:hover .tooltip {
        opacity: 1;
        transform: translateY(-50%) translateX(0);
    }
}
.nav-btn:active .tooltip,
.nav-btn.show-tooltip .tooltip {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
}


/* ==========================================================================
   Landing Page Footer
   ========================================================================== */
#landing-footer {
    display: none;
}

#app-root.landing #landing-footer {
    display: flex;
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
    align-items: center;
    justify-content: center;
    gap: 16px;
    font-family: 'Outfit', sans-serif;
    font-size: 13px;
    color: var(--text-muted);
    white-space: nowrap;
    text-align: center;
    pointer-events: auto;
    width: auto;
}

.footer-credit b {
    color: var(--text-secondary);
    font-weight: 600;
}

.footer-divider {
    color: var(--border);
    opacity: 0.5;
    font-weight: 300;
}

.footer-links, .footer-bug {
    display: flex;
    align-items: center;
    gap: 14px;
}

.footer-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition-fast);
    padding: 4px 8px;
    border-radius: 6px;
}

.footer-link svg {
    transition: transform var(--transition-fast);
}

.footer-link:hover {
    color: var(--accent);
    background-color: var(--accent-light);
}

.footer-link:hover svg {
    transform: scale(1.1);
}

.bug-link:hover {
    color: var(--error) !important;
    background-color: rgba(239, 68, 68, 0.08) !important;
}

/* Mobile responsive layout */
@media (max-width: 768px) {
    #app-root.landing #landing-footer {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 6px 12px;
        bottom: 16px;
        font-size: 11.5px;
        width: 100%;
        padding: 0 16px;
    }
    
    #app-root.landing #landing-footer .footer-divider {
        display: none;
    }
    
    #app-root.landing .footer-credit {
        width: 100%;
        text-align: center;
        margin-bottom: 2px;
    }
    
    .footer-links, .footer-bug {
        gap: 8px;
    }
    
    .footer-link {
        padding: 4px 6px;
    }
}