/* Sub-Navigation Tabs - High Contrast Brand Style */
.sub-nav-tabs {
    display: flex;
    align-items: center;
    background-color: var(--surface);
    padding: 6px;
    border-radius: 10px;
    margin-bottom: 20px;
    gap: 6px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
}

.sub-nav-btn {
    flex: 0 0 auto;
    background: transparent;
    border: 1px solid transparent;
    min-height: 38px;
    padding: 8px 14px;
    font-size: 13px;
    font-weight: 700;
    line-height: 1.15;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 8px;
    transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
    position: relative;
    user-select: none;
    white-space: nowrap;
}

.sub-nav-btn:hover {
    color: var(--primary-700);
    background-color: var(--primary-50);
    border-color: var(--primary-100);
}

.sub-nav-btn.active {
    color: #ffffff;
    background: var(--primary-600);
    box-shadow: 0 6px 14px rgba(26, 56, 98, 0.16);
    border-color: var(--primary-600);
}

.sub-nav-btn.active::after {
    display: none;
}

.cashflow-navigation {
    position: relative;
    z-index: 40;
    margin-bottom: 20px;
    overflow: visible;
}

.cashflow-nav-groups {
    display: flex;
    align-items: stretch;
    flex-wrap: wrap;
    gap: 4px;
    overflow: visible;
    padding: 0;
}

.cashflow-nav-menu {
    position: relative;
    flex: 0 0 auto;
}

.cashflow-nav-group-tab {
    appearance: none;
    -webkit-appearance: none;
    font: inherit;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    flex: 0 0 auto;
    min-height: 42px;
    padding: 8px 14px;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 14px;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: 0;
    text-transform: none;
    white-space: nowrap;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.cashflow-nav-group-tab:hover,
.cashflow-nav-group-tab[aria-expanded="true"] {
    color: var(--primary-700);
    background: var(--primary-50);
}

.cashflow-nav-group-tab.active {
    color: var(--primary-700);
    background: var(--primary-50);
}

.cashflow-nav-group-caret {
    flex-shrink: 0;
    color: currentColor;
    transition: transform 0.15s ease;
}

.cashflow-nav-group-tab[aria-expanded="true"] .cashflow-nav-group-caret {
    transform: rotate(180deg);
}

.cashflow-nav-group-tab:focus-visible,
.cashflow-nav-menu-item:focus-visible {
    outline: 3px solid rgba(37, 99, 235, 0.32);
    outline-offset: 2px;
}

.cashflow-nav-menu-panel {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 4000;
    display: none;
    flex-direction: column;
    gap: 2px;
    min-width: 220px;
    padding: 6px;
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    pointer-events: auto;
}

.cashflow-nav-menu-panel[hidden] {
    display: none !important;
}

.cashflow-nav-menu-panel.is-open {
    display: flex !important;
}

#cashflow.tab-content.active {
    overflow: visible;
}

.cashflow-nav-menu-item {
    appearance: none;
    -webkit-appearance: none;
    font: inherit;
    display: flex;
    align-items: center;
    width: 100%;
    min-height: 40px;
    padding: 8px 12px;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.2;
    text-align: left;
    white-space: nowrap;
}

.cashflow-nav-menu-item:hover {
    color: var(--primary-700);
    background: var(--primary-50);
}

.cashflow-nav-menu-item.active {
    color: #ffffff;
    background: var(--primary-600);
}

@media (max-width: 768px) {
    .cashflow-navigation {
        margin-bottom: 16px;
    }

    .cashflow-nav-groups {
        gap: 2px;
    }

    .cashflow-nav-group-tab {
        min-height: 44px;
        padding: 10px 12px;
        font-size: 13px;
    }

    .cashflow-nav-menu-panel {
        min-width: min(240px, calc(100vw - 40px));
    }

    .cashflow-nav-menu-item {
        min-height: 44px;
        padding: 10px 12px;
    }
}

@media (max-width: 480px) {
    .cashflow-nav-group-tab {
        padding: 10px 10px;
        font-size: 13px;
    }

    .cashflow-nav-menu-item {
        font-size: 13px;
    }
}

/* Mobile Sub-Navigation Styles */
@media (max-width: 768px) {
    .sub-nav-tabs {
        display: flex;
        flex-wrap: nowrap;
        width: 100%;
        padding: 6px;
        gap: 6px;
        margin-bottom: 16px;
        justify-content: flex-start;
        position: relative;
        z-index: 10;
    }

    .sub-nav-btn {
        flex: 0 0 auto;
        min-width: max-content;
        min-height: 38px;
        padding: 8px 14px;
        font-size: 13px;
        text-align: center;
        touch-action: manipulation;
        -webkit-tap-highlight-color: rgba(26, 56, 98, 0.2);
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
        z-index: 11;
        user-select: none;
        -webkit-user-select: none;
    }

    .sub-nav-btn:active {
        transform: scale(0.98);
        opacity: 0.85;
        background: var(--primary-100);
    }

    /* Hide red dot on mobile for cleaner look */
    .sub-nav-btn.active::after {
        display: none;
    }
}

@media (max-width: 480px) {
    .sub-nav-tabs {
        padding: 6px;
        gap: 6px;
    }

    .sub-nav-btn {
        min-width: max-content;
        padding: 8px 12px;
        font-size: 12px;
    }
}