/* ============================================================================
   RESPONSIVE LAYOUT & BREAKPOINTS
   ============================================================================ */

/* Extra Large Screens (> 1600px) */
@media (min-width: 1600px) {
    .agent-container {
        grid-template-columns: 340px 1fr;
    }
}

/* Medium Desktop & Small Laptop (< 1280px) */
@media (max-width: 1280px) {
    .header-inner,
    .tabs,
    .app-content-container {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }

    .agent-container {
        grid-template-columns: 280px 1fr;
    }
}

/* Tablet Landscape & Small Devices (< 1024px) */
@media (max-width: 1024px) {
    .header-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.85rem;
        padding: 0.85rem 1.25rem;
    }

    .tabs {
        padding: 0.5rem 1.25rem;
    }

    .app-content-container {
        padding: 1rem 1.25rem 2rem;
    }

    .agent-container {
        grid-template-columns: 260px 1fr;
        height: calc(100vh - 200px);
        min-height: 650px;
    }

    .welcome-prompt-grid {
        grid-template-columns: 1fr;
    }
}

/* Mobile & Portrait Tablet (< 768px) */
@media (max-width: 768px) {
    .header-status-group {
        width: 100%;
        gap: 0.5rem;
    }

    .status-pill {
        font-size: 0.75rem;
        padding: 0.25rem 0.65rem;
    }

    .brand-title-row h1 {
        font-size: 1.2rem;
    }

    .brand-logo {
        width: 36px;
        height: 36px;
    }

    .card-body {
        padding: 1.25rem;
    }

    .card-header {
        padding: 1.25rem;
    }

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

    .subscription-item {
        grid-template-columns: 1fr;
        gap: 0.85rem;
    }

    .remove-subscription-btn {
        justify-self: flex-end;
        margin-top: 0.25rem;
    }

    .remove-placeholder {
        display: none;
    }

    .button-group {
        flex-direction: column;
        width: 100%;
    }

    .button-group .btn {
        width: 100%;
    }

    /* Mobile Agent Chat */
    .agent-container {
        grid-template-columns: 1fr;
        height: calc(100vh - 190px);
        min-height: 540px;
    }

    .conversation-sidebar {
        display: none;
    }

    .agent-container.sidebar-open .conversation-sidebar {
        display: flex;
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 60;
        border-radius: var(--radius-lg);
    }

    #agent-messages {
        padding: 1rem;
        gap: 1rem;
    }

    .chat-input-area {
        padding: 0.85rem 1rem;
    }

    .message-user .message,
    .message-assistant {
        max-width: 100%;
    }

    .download-cards-container {
        grid-template-columns: 1fr;
    }
}