/* FuturY - Responsive Design (card_704) */

/* ============================================
   TABLET: 768px
   ============================================ */
@media (max-width: 768px) {
    :root {
        --sidebar-width: var(--sidebar-collapsed-width);
        --navbar-height: 44px;
    }

    /* Auto-collapse sidebar on tablet */
    #app-container {
        grid-template-columns: var(--sidebar-collapsed-width) 1fr;
    }

    /* Hide text elements in sidebar */
    .sidebar-left__header h3,
    .sidebar-left__content .resource-name span:last-child,
    .sidebar-left__content .resource-rate,
    .sidebar-left__section-title,
    .sidebar-left__content .building-desc,
    .sidebar-left__content .building-costs {
        display: none;
    }

    .sidebar-left__content .resource-item {
        justify-content: center;
        padding: var(--space-xs) 0;
    }

    .sidebar-left__content .resource-icon {
        font-size: var(--font-size-2xl);
    }

    /* Nav bar: compact */
    .nav-bar {
        padding: 0 var(--space-md);
        gap: var(--space-sm);
    }

    .nav-bar__brand {
        margin-right: var(--space-md);
    }

    .nav-bar__title {
        font-size: var(--font-size-lg);
    }

    .nav-bar__year {
        font-size: var(--font-size-2xl);
    }

    .nav-bar__date {
        font-size: var(--font-size-md);
    }

    .nav-btn {
        padding: var(--space-sm) var(--space-md);
        font-size: var(--font-size-base);
    }

    /* Planet panel smaller */
    .planet-panel {
        width: 300px;
        right: var(--space-md);
    }

    /* Dock reduced height */
    .bottom-dock {
        --dock-default-height: 180px;
    }

    /* Notifications narrower */
    #notifications-container {
        width: 280px;
        right: var(--space-md);
    }

    /* HUD */
    .hud-overlay {
        left: calc(var(--sidebar-collapsed-width) + var(--space-md));
    }
}

/* ============================================
   MOBILE: 480px
   ============================================ */
@media (max-width: 480px) {
    :root {
        --navbar-height: 40px;
    }

    /* Sidebar hamburger: hidden by default */
    #app-container {
        grid-template-areas:
            "nav     nav"
            "viewport viewport"
            "dock     dock";
        grid-template-columns: 1fr;
        grid-template-rows: var(--navbar-height) 1fr auto;
    }

    .sidebar-left {
        position: fixed;
        top: var(--navbar-height);
        left: 0;
        width: 280px;
        height: calc(100vh - var(--navbar-height));
        transform: translateX(-100%);
        transition: transform var(--transition-slow);
        z-index: calc(var(--z-panel) + 10);
    }

    .sidebar-left.open {
        transform: translateX(0);
    }

    /* Sidebar overlay backdrop */
    .sidebar-backdrop {
        display: none;
        position: fixed;
        inset: 0;
        top: var(--navbar-height);
        background: rgba(0, 0, 0, 0.5);
        z-index: calc(var(--z-panel) + 5);
    }

    .sidebar-left.open ~ .sidebar-backdrop {
        display: block;
    }

    /* Hamburger button visible */
    .hamburger-btn {
        display: flex;
    }

    /* Nav bar: very compact */
    .nav-bar {
        padding: 0 var(--space-sm);
        gap: var(--space-xs);
    }

    .nav-bar__brand {
        margin-right: var(--space-sm);
    }

    .nav-bar__title {
        font-size: var(--font-size-md);
    }

    .nav-bar__year {
        font-size: var(--font-size-xl);
    }

    .nav-bar__date {
        display: none;
    }

    /* Hide nav tab labels on mobile, show only icons */
    .nav-btn {
        padding: var(--space-sm);
        font-size: var(--font-size-lg);
    }

    .nav-btn .nav-btn__label {
        display: none;
    }

    /* Planet panel fullscreen */
    .planet-panel {
        position: fixed;
        top: var(--navbar-height);
        right: 0;
        left: 0;
        width: 100%;
        max-height: calc(100vh - var(--navbar-height));
        transform: none;
        border-radius: 0;
        z-index: calc(var(--z-notification) + 10);
    }

    .planet-panel.hidden {
        transform: translateY(100%);
    }

    /* Dock full-width */
    .bottom-dock {
        max-height: 60vh;
    }

    /* Notifications full-width */
    #notifications-container {
        left: var(--space-sm);
        right: var(--space-sm);
        width: auto;
    }

    /* HUD hidden on mobile (info in nav-bar) */
    .hud-overlay {
        display: none;
    }

    /* Countdown smaller */
    .countdown-display {
        font-size: 80px;
    }

    .countdown-display.launch {
        font-size: 50px;
    }
}

/* ============================================
   HAMBURGER BUTTON (hidden on desktop)
   ============================================ */
.hamburger-btn {
    display: none;
    background: none;
    border: none;
    color: var(--color-accent);
    font-size: var(--font-size-3xl);
    padding: var(--space-xs);
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

.hamburger-btn:hover {
    color: var(--color-text-primary);
}

/* ============================================
   TOUCH: Swipe support (JS-enhanced)
   ============================================ */
@media (pointer: coarse) {
    .sidebar-left {
        touch-action: pan-y;
    }

    .dock__resize-handle {
        height: 12px;
    }

    .nav-btn {
        min-height: 44px;
        min-width: 44px;
    }

    .close-btn {
        min-width: 44px;
        min-height: 44px;
    }
}

/* ============================================
   LARGE SCREENS: 1440px+
   ============================================ */
@media (min-width: 1440px) {
    :root {
        --sidebar-width: 340px;
        --panel-width: 400px;
    }
}