/* ===== Loading States & UI Utilities ===== */

/* Loader Overlay */
.loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 18, 0.95);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: fadeIn 0.2s ease;
}

.loader-content {
    text-align: center;
}

.loader-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(99, 102, 241, 0.2);
    border-top-color: #6366f1;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 16px;
}

.loader-message {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}

/* Inline Spinner */
.inline-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
}

.inline-spinner .spinner {
    border: 2px solid rgba(99, 102, 241, 0.2);
    border-top-color: #6366f1;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.inline-spinner-small .spinner {
    width: 16px;
    height: 16px;
}

.inline-spinner-medium .spinner {
    width: 24px;
    height: 24px;
}

.inline-spinner-large .spinner {
    width: 32px;
    height: 32px;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 400px;
}

.toast {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    transform: translateX(400px);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
}

.toast-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    flex-shrink: 0;
}

.toast-success .toast-icon {
    background: rgba(16, 185, 129, 0.2);
    color: var(--accent-green);
}

.toast-error .toast-icon {
    background: rgba(239, 68, 68, 0.2);
    color: var(--accent-red);
}

.toast-warning .toast-icon {
    background: rgba(245, 158, 11, 0.2);
    color: var(--accent-gold);
}

.toast-info .toast-icon {
    background: rgba(99, 102, 241, 0.2);
    color: var(--accent-primary);
}

.toast-message {
    flex: 1;
    font-size: 14px;
    color: var(--text-primary);
}

/* Skeleton Loaders */
.skeleton {
    background: linear-gradient(90deg,
            rgba(255, 255, 255, 0.05) 25%,
            rgba(255, 255, 255, 0.1) 50%,
            rgba(255, 255, 255, 0.05) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 8px;
}

.skeleton-text {
    height: 16px;
    margin-bottom: 8px;
}

.skeleton-text:last-child {
    margin-bottom: 0;
}

.skeleton-image {
    width: 100%;
    height: 200px;
    border-radius: 12px;
}

.skeleton-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
}

.skeleton-card {
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
}

.skeleton-card .skeleton-image {
    height: 150px;
    margin-bottom: 12px;
}

.skeleton-card .skeleton-text {
    height: 14px;
}

/* Dialog/Modal */
.dialog-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: fadeIn 0.2s ease;
}

.dialog-content {
    width: 90%;
    max-width: 450px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    animation: scaleIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.dialog-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.dialog-message {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 24px;
}

.dialog-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

.dialog-actions .btn {
    padding: 10px 20px;
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    overflow: hidden;
    position: relative;
    height: 8px;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 8px;
    transition: width 0.3s ease;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg,
            transparent,
            rgba(255, 255, 255, 0.2),
            transparent);
    animation: progressShine 1.5s infinite;
}

.progress-text {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
    text-align: right;
}

/* Animations */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

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

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes scaleIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }

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

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

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

/* Button Loading State */
.btn.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

/* Responsive Toast */
@media (max-width: 768px) {
    .toast-container {
        top: 10px;
        right: 10px;
        left: 10px;
        max-width: none;
    }

    .toast {
        margin: 0;
    }
}

/* Danger Button */
.btn-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    border: none;
}

.btn-danger:hover {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

/* Ghost Button */
.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: none;
    font-size: 14px;
}

.btn-ghost:hover {
    color: var(--accent-primary);
    text-decoration: underline;
}

/* Keyboard Shortcut Badge */
.kbd {
    display: inline-block;
    padding: 2px 6px;
    font-size: 11px;
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', monospace;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-left: 8px;
}