/* ==========================================================================
   Animations - GymTracker Elite UI
   ========================================================================== */

/* ── Shimmer / Skeleton Loading ───────────────────────────────────────────── */
@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* ── Toast Notifications ──────────────────────────────────────────────────── */
@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateY(-1rem) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes toastOut {
    from {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    to {
        opacity: 0;
        transform: translateY(-1rem) scale(0.95);
    }
}

/* ── Pulse Dot ────────────────────────────────────────────────────────────── */
@keyframes pulseDot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.85); }
}

/* ── Slide Transitions ────────────────────────────────────────────────────── */
@keyframes slideInRight {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

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

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

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

/* ── Fade Animations ──────────────────────────────────────────────────────── */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ── Gradient Shift ───────────────────────────────────────────────────────── */
@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* ── Scale In (Modal) ─────────────────────────────────────────────────────── */
@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

/* ── Bounce Subtle ────────────────────────────────────────────────────────── */
@keyframes bounceSubtle {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

/* ── Spin ─────────────────────────────────────────────────────────────────── */
@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ── Glow Pulse ───────────────────────────────────────────────────────────── */
@keyframes glowPulse {
    0%, 100% { box-shadow: 0 0 5px rgba(0, 212, 255, 0.3); }
    50% { box-shadow: 0 0 20px rgba(0, 212, 255, 0.5); }
}

/* ── Rest Timer Countdown ─────────────────────────────────────────────────── */
@keyframes countdownPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* ==========================================================================
   Animation Utility Classes
   ========================================================================== */

.animate-slide-in-right {
    animation: slideInRight 0.3s ease-out forwards;
}

.animate-slide-in-left {
    animation: slideInLeft 0.3s ease-out forwards;
}

.animate-fade-in {
    animation: fadeIn 0.3s ease-out forwards;
}

.animate-fade-in-up {
    animation: fadeInUp 0.4s ease-out forwards;
}

.animate-fade-in-down {
    animation: fadeInDown 0.3s ease-out forwards;
}

.animate-gradient {
    background-size: 200% 200%;
    animation: gradientShift 6s ease infinite;
}

.animate-scale-in {
    animation: scaleIn 0.25s ease-out forwards;
}

.animate-bounce-subtle {
    animation: bounceSubtle 2s ease-in-out infinite;
}

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

.animate-spin {
    animation: spin 1s linear infinite;
}

/* ── Staggered Children ───────────────────────────────────────────────────── */
.stagger-children > *:nth-child(1) { animation-delay: 0ms; }
.stagger-children > *:nth-child(2) { animation-delay: 50ms; }
.stagger-children > *:nth-child(3) { animation-delay: 100ms; }
.stagger-children > *:nth-child(4) { animation-delay: 150ms; }
.stagger-children > *:nth-child(5) { animation-delay: 200ms; }
.stagger-children > *:nth-child(6) { animation-delay: 250ms; }
.stagger-children > *:nth-child(7) { animation-delay: 300ms; }
.stagger-children > *:nth-child(8) { animation-delay: 350ms; }

/* ==========================================================================
   Reduced Motion
   ========================================================================== */
@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-gradient {
        animation: none;
    }

    .animate-bounce-subtle,
    .animate-glow-pulse {
        animation: none;
    }

    .pulse-dot::before {
        animation: none;
    }
}