/* Loading States & Animations */

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg,
            var(--bg-surface-1) 0%,
            var(--bg-surface-2) 50%,
            var(--bg-surface-1) 100%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
}

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

    100% {
        background-position: -200% 0;
    }
}

.skeleton-text {
    height: 1rem;
    margin-bottom: 0.5rem;
    border-radius: 4px;
}

.skeleton-text:last-child {
    width: 80%;
}

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

.skeleton-card {
    height: 200px;
    border-radius: var(--radius-md);
}

.skeleton-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
}

.skeleton-button {
    height: 44px;
    width: 120px;
    border-radius: var(--radius-sm);
}

/* Spinner */
.spinner {
    display: inline-block;
    width: 36px;
    height: 36px;
    border: 3px solid rgba(99, 102, 241, 0.15);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spinner-rotate 0.8s linear infinite;
}

@keyframes spinner-rotate {
    to {
        transform: rotate(360deg);
    }
}

.spinner-sm {
    width: 18px;
    height: 18px;
    border-width: 2px;
}

.spinner-lg {
    width: 56px;
    height: 56px;
    border-width: 5px;
}

/* Loading Overlay — NO blur for performance */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(12, 13, 20, 0.75);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-overlay.hidden {
    display: none;
}

/* Progress Bar Shimmer */
.progress-bar-animated {
    position: relative;
    overflow: hidden;
}

.progress-bar-animated::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg,
            transparent,
            rgba(255, 255, 255, 0.15),
            transparent);
    animation: progress-shimmer 2s infinite;
}

@keyframes progress-shimmer {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(100%);
    }
}

/* Pulse */
.pulse {
    animation: pulse-animation 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse-animation {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

/* Fade In */
.fade-in {
    animation: fade-in 0.2s ease-in;
}

@keyframes fade-in {
    from {
        opacity: 0;
        transform: translateY(6px);
    }

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

/* Slide In Right */
.slide-in-right {
    animation: slide-in-right 0.2s ease-out;
}

@keyframes slide-in-right {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Slide In Left */
.slide-in-left {
    animation: slide-in-left 0.2s ease-out;
}

@keyframes slide-in-left {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Scale In */
.scale-in {
    animation: scale-in 0.15s ease-out;
}

@keyframes scale-in {
    from {
        transform: scale(0.96);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* Bounce */
.bounce {
    animation: bounce 0.4s ease-out;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-8px);
    }
}

/* Shake (errors) */
.shake {
    animation: shake 0.4s ease-in-out;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    10%,
    30%,
    50%,
    70%,
    90% {
        transform: translateX(-4px);
    }

    20%,
    40%,
    60%,
    80% {
        transform: translateX(4px);
    }
}

/* Loading Dots */
.loading-dots {
    display: inline-flex;
    gap: 4px;
}

.loading-dots span {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent-primary);
    animation: loading-dots 1.4s infinite ease-in-out both;
}

.loading-dots span:nth-child(1) {
    animation-delay: -0.32s;
}

.loading-dots span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes loading-dots {

    0%,
    80%,
    100% {
        transform: scale(0);
        opacity: 0.5;
    }

    40% {
        transform: scale(1);
        opacity: 1;
    }
}