/* ======================================================
   SMART EXPENSE TRACKER – MOTION SYSTEM
   Smooth | Premium | FinTech Grade
====================================================== */

/* ===============================
   PAGE LOAD ANIMATIONS
================================ */

/* Fade + slide on page load */
.page-enter {
    animation: pageEnter 0.9s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes pageEnter {
    from {
        opacity: 0;
        transform: translateY(40px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ===============================
   STAGGERED CHILD ANIMATIONS
================================ */

.stagger > * {
    opacity: 0;
    transform: translateY(30px);
    animation: staggerFade 0.6s ease forwards;
}

.stagger > *:nth-child(1) { animation-delay: 0.1s; }
.stagger > *:nth-child(2) { animation-delay: 0.2s; }
.stagger > *:nth-child(3) { animation-delay: 0.3s; }
.stagger > *:nth-child(4) { animation-delay: 0.4s; }
.stagger > *:nth-child(5) { animation-delay: 0.5s; }

@keyframes staggerFade {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===============================
   FLOATING CARDS
================================ */

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

.float-fast {
    animation: floatFast 4s ease-in-out infinite;
}

@keyframes floatSlow {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-16px);
    }
}

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

/* ===============================
   HOVER MICRO-INTERACTIONS
================================ */

/* Soft pulse on important elements */
.pulse {
    animation: pulseGlow 2.5s infinite;
}

@keyframes pulseGlow {
    0% {
        box-shadow: 0 0 0 rgba(99,102,241,0);
    }
    50% {
        box-shadow: 0 0 30px rgba(99,102,241,0.45);
    }
    100% {
        box-shadow: 0 0 0 rgba(99,102,241,0);
    }
}

/* ===============================
   BUTTON FEEDBACK
================================ */

.btn-press {
    transition: transform 0.15s ease;
}

.btn-press:active {
    transform: scale(0.96);
}

/* ===============================
   MODAL ANIMATIONS
================================ */

.modal-enter {
    animation: modalIn 0.4s ease forwards;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ===============================
   PROGRESS BAR ANIMATION
================================ */

.progress-fill {
    animation: progressGrow 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes progressGrow {
    from {
        width: 0;
    }
}

/* ===============================
   ALERT SHAKE (ERROR FEEDBACK)
================================ */

.shake {
    animation: shake 0.4s ease;
}

@keyframes shake {
    0% { transform: translateX(0); }
    25% { transform: translateX(-6px); }
    50% { transform: translateX(6px); }
    75% { transform: translateX(-4px); }
    100% { transform: translateX(0); }
}

/* ===============================
   LOADING SKELETON
================================ */

.skeleton {
    position: relative;
    overflow: hidden;
    background: rgba(255,255,255,0.06);
}

.skeleton::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255,255,255,0.15),
        transparent
    );
    animation: shimmer 1.4s infinite;
}

@keyframes shimmer {
    100% {
        transform: translateX(100%);
    }
}

/* ===============================
   SCROLL REVEAL SUPPORT
================================ */

.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

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

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}