/* MagicMenu Animation System */

/* ============================================
   KEYFRAME ANIMATIONS
   ============================================ */

/* Page load entrance */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Floating animation for decorative elements */
@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(3deg);
    }
}

@keyframes floatSlow {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Sparkle effect for badges/icons */
@keyframes sparkle {
    0%, 100% {
        transform: scale(1) rotate(0deg);
    }
    50% {
        transform: scale(1.15) rotate(10deg);
    }
}

/* Pulse animation */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* Shimmer for loading states */
@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* Slide in for toasts/notifications */
@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Progress bar fill */
@keyframes progressFill {
    from {
        width: 0%;
    }
}

/* ============================================
   ANIMATION UTILITY CLASSES
   ============================================ */

/* Single element animations */
.animate-fade-in-up {
    animation: fadeInUp 0.6s var(--ease-out-expo, cubic-bezier(0.16, 1, 0.3, 1)) forwards;
}

.animate-fade-in-down {
    animation: fadeInDown 0.6s var(--ease-out-expo, cubic-bezier(0.16, 1, 0.3, 1)) forwards;
}

.animate-fade-in-left {
    animation: fadeInLeft 0.6s var(--ease-out-expo, cubic-bezier(0.16, 1, 0.3, 1)) forwards;
}

.animate-fade-in-right {
    animation: fadeInRight 0.6s var(--ease-out-expo, cubic-bezier(0.16, 1, 0.3, 1)) forwards;
}

.animate-scale-in {
    animation: scaleIn 0.5s var(--ease-out-expo, cubic-bezier(0.16, 1, 0.3, 1)) forwards;
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

.animate-float-slow {
    animation: floatSlow 8s ease-in-out infinite;
}

.animate-sparkle {
    animation: sparkle 2s ease-in-out infinite;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* Staggered card animations */
.animate-stagger > * {
    opacity: 0;
    animation: fadeInUp 0.6s var(--ease-out-expo, cubic-bezier(0.16, 1, 0.3, 1)) forwards;
}

.animate-stagger > *:nth-child(1) { animation-delay: 0.05s; }
.animate-stagger > *:nth-child(2) { animation-delay: 0.1s; }
.animate-stagger > *:nth-child(3) { animation-delay: 0.15s; }
.animate-stagger > *:nth-child(4) { animation-delay: 0.2s; }
.animate-stagger > *:nth-child(5) { animation-delay: 0.25s; }
.animate-stagger > *:nth-child(6) { animation-delay: 0.3s; }
.animate-stagger > *:nth-child(7) { animation-delay: 0.35s; }
.animate-stagger > *:nth-child(8) { animation-delay: 0.4s; }
.animate-stagger > *:nth-child(9) { animation-delay: 0.45s; }
.animate-stagger > *:nth-child(10) { animation-delay: 0.5s; }
.animate-stagger > *:nth-child(n+11) { animation-delay: 0.5s; }

/* Animation delay utilities */
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }

/* ============================================
   LOADING STATES
   ============================================ */

/* Skeleton loading placeholder */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--color-cream-200, #f5ede3) 25%,
        var(--color-cream-100, #faf6f1) 50%,
        var(--color-cream-200, #f5ede3) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md, 0.5rem);
}

.skeleton-text {
    height: 1em;
    margin-bottom: 0.5em;
    border-radius: var(--radius-sm, 0.375rem);
}

.skeleton-title {
    height: 1.5em;
    width: 60%;
    margin-bottom: 1em;
}

.skeleton-card {
    height: 200px;
    border-radius: var(--radius-xl, 1rem);
}

/* ============================================
   HOVER & INTERACTION STATES
   ============================================ */

/* Lift on hover */
.hover-lift {
    transition: transform 0.3s var(--ease-out-expo, cubic-bezier(0.16, 1, 0.3, 1)),
                box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg, 0 10px 15px -3px rgba(26, 71, 42, 0.1));
}

/* Glow on hover */
.hover-glow {
    transition: box-shadow 0.3s ease;
}

.hover-glow:hover {
    box-shadow: var(--shadow-glow, 0 0 40px rgba(255, 107, 53, 0.15));
}

/* Scale on hover */
.hover-scale {
    transition: transform 0.2s ease;
}

.hover-scale:hover {
    transform: scale(1.02);
}

/* ============================================
   HTMX INTEGRATION
   ============================================ */

/* Fade out during swap */
.htmx-swapping {
    opacity: 0;
    transition: opacity 0.2s ease-out;
}

/* Fade in after swap */
.htmx-added {
    animation: fadeInUp 0.4s var(--ease-out-expo, cubic-bezier(0.16, 1, 0.3, 1));
}

/* Loading state */
.htmx-request {
    position: relative;
}

.htmx-request::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.7);
    border-radius: inherit;
}

/* Menu edit mode: skeleton shimmer overrides global loading overlay */
.meal-card-edit.htmx-request .meal-content,
.meal-card-edit.htmx-request .meal-actions {
    display: none;
}

.meal-card-edit.htmx-request::after {
    content: '';
    position: relative;
    display: block;
    height: 60px;
    background: linear-gradient(90deg, var(--color-cream-200) 25%, var(--color-cream-100) 50%, var(--color-cream-200) 75%);
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
    opacity: 1;
    z-index: 1;
}

.empty-slot.htmx-request .add-meal-form {
    display: none;
}

.empty-slot.htmx-request::after {
    content: '';
    position: relative;
    display: block;
    height: 80px;
    background: linear-gradient(90deg, var(--color-cream-200) 25%, var(--color-cream-100) 50%, var(--color-cream-200) 75%);
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
    opacity: 1;
    z-index: 1;
}

@keyframes skeleton-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Suppress swap animations for menu generation polling (prevents flash every 3s) */
#menu-generation-progress.htmx-swapping,
#menu-generation-progress .htmx-swapping {
    opacity: 1;
    transition: none;
}

#menu-generation-progress.htmx-added,
#menu-generation-progress .htmx-added {
    animation: none;
}

#menu-generation-progress.htmx-request::after,
#menu-generation-progress .htmx-request::after {
    display: none;
}

/* ============================================
   REDUCED MOTION SUPPORT
   ============================================ */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .animate-stagger > * {
        opacity: 1;
        animation: none;
    }

    .animate-fade-in-up,
    .animate-fade-in-down,
    .animate-fade-in-left,
    .animate-fade-in-right,
    .animate-scale-in {
        animation: none;
        opacity: 1;
        transform: none;
    }

    .animate-float,
    .animate-float-slow,
    .animate-sparkle,
    .animate-pulse {
        animation: none;
    }

    .skeleton {
        animation: none;
        background: var(--color-cream-200, #f5ede3);
    }

    .hover-lift:hover {
        transform: none;
    }
}

/* ============================================
   DARK MODE ADJUSTMENTS
   ============================================ */

@media (prefers-color-scheme: dark) {
    .skeleton {
        background: linear-gradient(
            90deg,
            var(--color-cream-200, #3d3a37) 25%,
            var(--color-cream-100, #353230) 50%,
            var(--color-cream-200, #3d3a37) 75%
        );
        background-size: 200% 100%;
    }

    .htmx-request::after {
        background: rgba(0, 0, 0, 0.5);
    }
}