/* Custom Utilities */

@layer utilities {
    /* ============================================
       Menu Toggle (Hamburger -> X) styles
       Visuals follow design tokens; transitions disabled for reduced motion
       ============================================ */
    .menu-toggle {
        min-width: 44px;
        min-height: 44px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: var(--radius, 12px);
        background: transparent;
        outline-offset: 3px;
        padding: 8px;
    }
    .menu-toggle .hamburger-line {
        stroke: hsl(var(--muted-foreground));
        stroke-width: 2;
        stroke-linecap: round;
        transition: transform 220ms cubic-bezier(.2,.8,.2,1), opacity 180ms ease;
    }
    .menu-toggle:hover .hamburger-line {
        stroke: hsl(var(--foreground));
    }
    .menu-toggle[data-open="true"] .hamburger-line {
        stroke: hsl(var(--flame));
    }
    /* Top line rotates 45deg and moves toward center when open */
    .menu-toggle .line-top { transform-origin: 12px 7px; }
    .menu-toggle[data-open="true"] .line-top { transform: translateY(5px) rotate(45deg); }
    /* Middle line fades and scales when open */
    .menu-toggle .line-mid { transform-origin: 12px 12px; }
    .menu-toggle[data-open="true"] .line-mid { opacity: 0; transform: scaleX(0.6); }
    /* Bottom line rotates -45deg and moves toward center when open */
    .menu-toggle .line-bot { transform-origin: 12px 17px; }
    .menu-toggle[data-open="true"] .line-bot { transform: translateY(-5px) rotate(-45deg); }
    /* Focus visible ring follows token colors */
    .menu-toggle:focus-visible { box-shadow: 0 0 0 3px hsl(var(--ring) / 0.35); }
    /* Reduced motion: remove transforms but keep instant state */
    @media (prefers-reduced-motion: reduce) {
        .menu-toggle .hamburger-line { transition: none; }
        .menu-toggle[data-open="true"] .line-top,
        .menu-toggle[data-open="true"] .line-mid,
        .menu-toggle[data-open="true"] .line-bot { transform: none; opacity: 1; }
    }
    /* Background animation absolute layer behind content */
    .bg-anim {
        position: absolute;
        inset: 0;
        pointer-events: none;
        z-index: 0;
    }

    /* Foreground content layer above animation */
    .content-layer {
        position: relative;
        z-index: 1;
    }

    /* Safe content defaults to avoid overflow */
    .content-safe {
        overflow-wrap: anywhere;
    }

    .content-safe img,
    .content-safe svg {
        max-width: 100%;
        height: auto;
    }

    /* Touch target minimums for accessibility */
    .touch-target {
        min-width: 44px;
        min-height: 44px;
    }

    /* Clamp-based spacing helpers */
    .clamp-section-padding {
        padding-left: clamp(1rem, 3vw, 2.5rem);
        padding-right: clamp(1rem, 3vw, 2.5rem);
    }

    .clamp-card-padding {
        padding: clamp(0.875rem, 2.5vw, 1.25rem);
    }

    /* Desktop override hook for cases where desktop padding must remain exact */
    @media (min-width: 768px) {
        .clamp-card-padding-override {
            padding: 1rem; /* matches p-4 */
        }
    }

    /* Mobile-only safe top padding to prevent clipping of glows/badges */
    .pt-safe-mobile {
        padding-top: max(env(safe-area-inset-top, 0px), clamp(12px, 3.5vw, 24px));
    }
    @media (min-width: 768px) {
        .pt-safe-mobile {
            padding-top: 0;
        }
    }

    /* Scroll-snap viewport top padding so snapped card stays fully visible */
    .scroll-pad-top-mobile {
        scroll-padding-top: clamp(12px, 3.5vw, 24px);
    }
    @media (min-width: 768px) {
        .scroll-pad-top-mobile {
            scroll-padding-top: 0;
        }
    }

    /* Dynamic viewport min-height utility with fallbacks */
    .min-h-dvh {
        min-height: 100dvh;
        min-height: 100svh;
        min-height: 100lvh;
        min-height: calc(var(--vh, 1vh) * 100);
        box-sizing: border-box;
    }

    /* Safe bottom padding for iOS notches */
    .pb-safe-mobile {
        padding-bottom: max(env(safe-area-inset-bottom, 0px), clamp(16px, 3vw, 40px));
    }
    @media (min-width: 768px) {
        .pb-safe-mobile {
            padding-bottom: clamp(16px, 2.5vw, 40px);
        }
    }

    /* Hide scrollbars for scrollable carousels without affecting keyboard nav */
    .no-scrollbar::-webkit-scrollbar {
        display: none;
    }
    .no-scrollbar {
        -ms-overflow-style: none; /* IE and Edge */
        scrollbar-width: none; /* Firefox */
    }

    /* Particle sizing variable (mobile-first) */
    .particle-vars {
        --particle-size: clamp(6px, 1.8vw, 10px);
    }
    @media (min-width: 768px) {
        .particle-vars {
            --particle-size: 12px; /* matches prior w-3 (~12px) on desktop */
        }
    }
    /* ============================================
       RESPONSIVE PADDING UTILITIES
       Use these classes for consistent spacing
       ============================================ */
    
    /* Section Padding - Vertical */
    .section-py-sm {
        padding-top: var(--section-py-sm);
        padding-bottom: var(--section-py-sm);
    }
    
    .section-py-md {
        padding-top: var(--section-py-md);
        padding-bottom: var(--section-py-md);
    }
    
    .section-py-lg {
        padding-top: var(--section-py-lg);
        padding-bottom: var(--section-py-lg);
    }
    
    /* Section Padding - Horizontal */
    .section-px {
        padding-left: var(--section-px);
        padding-right: var(--section-px);
    }
    
    .section-px-wide {
        padding-left: var(--section-px-wide);
        padding-right: var(--section-px-wide);
    }
    
    /* Combined Section Padding */
    .section-padding-sm {
        padding: var(--section-py-sm) var(--section-px);
    }
    
    .section-padding-md {
        padding: var(--section-py-md) var(--section-px);
    }
    
    .section-padding-lg {
        padding: var(--section-py-lg) var(--section-px);
    }
    
    /* Card/Component Padding */
    .card-padding-sm {
        padding: var(--card-padding-sm);
    }
    
    .card-padding-md {
        padding: var(--card-padding-md);
    }
    
    .card-padding-lg {
        padding: var(--card-padding-lg);
    }
    
    /* Element Padding */
    .element-padding-xs {
        padding: var(--element-padding-xs);
    }
    
    .element-padding-sm {
        padding: var(--element-padding-sm);
    }
    
    .element-padding-md {
        padding: var(--element-padding-md);
    }
    
    /* Margin Bottom Utilities */
    .mb-spacing-xs {
        margin-bottom: var(--spacing-xs);
    }
    
    .mb-spacing-sm {
        margin-bottom: var(--spacing-sm);
    }
    
    .mb-spacing-md {
        margin-bottom: var(--spacing-md);
    }
    
    .mb-spacing-lg {
        margin-bottom: var(--spacing-lg);
    }
    
    .mb-spacing-xl {
        margin-bottom: var(--spacing-xl);
    }
    
    /* Margin Top Utilities */
    .mt-spacing-xs {
        margin-top: var(--spacing-xs);
    }
    
    .mt-spacing-sm {
        margin-top: var(--spacing-sm);
    }
    
    .mt-spacing-md {
        margin-top: var(--spacing-md);
    }
    
    .mt-spacing-lg {
        margin-top: var(--spacing-lg);
    }
    
    .mt-spacing-xl {
        margin-top: var(--spacing-xl);
    }
    
    /* Gap Utilities (for flex/grid) */
    .gap-xs {
        gap: var(--gap-xs);
    }
    
    .gap-sm {
        gap: var(--gap-sm);
    }
    
    .gap-md {
        gap: var(--gap-md);
    }
    
    .gap-lg {
        gap: var(--gap-lg);
    }

    /* Screen Reader Only - Accessibility */
    .sr-only {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        white-space: nowrap;
        border-width: 0;
    }

    .gradient-flame {
        background: var(--gradient-flame);
    }

    .gradient-electric {
        background: var(--gradient-electric);
    }

    .gradient-hero {
        background: var(--gradient-hero);
    }

    .shadow-flame {
        box-shadow: var(--shadow-flame);
    }

    .shadow-electric {
        box-shadow: var(--shadow-electric);
    }

    .shadow-card {
        box-shadow: var(--shadow-card);
    }

    .transition-smooth {
        transition: var(--transition-smooth);
    }

    .transition-glow {
        transition: var(--transition-glow);
    }

    .glow-flame {
        filter: drop-shadow(0 0 20px hsl(var(--flame-orange) / 0.6));
    }

    .glow-electric {
        filter: drop-shadow(0 0 20px hsl(var(--electric-cyan) / 0.6));
    }

    .text-gradient-flame {
        background: var(--gradient-flame);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }

    .text-gradient-hero {
        background: var(--gradient-hero);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
}