/* Critical CSS inline para performance */
.modern-preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

    .modern-preloader.fade-out {
        opacity: 0;
        visibility: hidden;
    }

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

.pulse-logo {
    width: 120px;
    height: 120px;
    margin: 0 auto 30px;
    animation: pulse 2s ease-in-out infinite;
}

    .pulse-logo img {
        width: 100%;
        height: 100%;
        object-fit: contain;
        filter: brightness(0) invert(1);
    }

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

.loading-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
}

    .loading-dots span {
        width: 12px;
        height: 12px;
        background: white;
        border-radius: 50%;
        animation: bounce 1.4s ease-in-out infinite both;
    }

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

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

@keyframes bounce {
    0%, 80%, 100% {
        transform: scale(0);
    }

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

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}

/* Melhorias de acessibilidade */
.sr-only {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Focus styles melhorados */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

/* Header sticky melhorado */
.sticky-header {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

/* Buttons com hover effects melhorados */
.theme-btn {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

    .theme-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    }

    .theme-btn::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
        transition: left 0.5s;
    }

    .theme-btn:hover::before {
        left: 100%;
    }