/**
 * EXP Page Transition System - Styles
 * Loading overlay e animações de transição
 */

/* ==================== LOADING OVERLAY ==================== */

#page-transition-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

/* Dark theme support */
.dark-layout #page-transition-overlay {
    background: rgba(30, 32, 51, 0.95);
}

/* Active state */
#page-transition-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Hiding state (animação de saída) */
#page-transition-overlay.hiding {
    opacity: 0;
}

/* ==================== LOADING CONTENT ==================== */

.loading-content {
    text-align: center;
    max-width: 300px;
    padding: 40px;
}

.loading-spinner {
    margin-bottom: 20px;
}

.loading-spinner .spinner-border {
    width: 3rem;
    height: 3rem;
    border-width: 0.3rem;
    animation: spinner-pulse 1.5s ease-in-out infinite;
}

/* Animação de pulso */
@keyframes spinner-pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

.loading-text {
    font-size: 16px;
    font-weight: 500;
    color: #5e5873;
    margin-bottom: 20px;
    animation: text-fade 1.5s ease-in-out infinite;
}

.dark-layout .loading-text {
    color: #b4b7bd;
}

@keyframes text-fade {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

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

.loading-progress {
    width: 200px;
    height: 4px;
    background: rgba(var(--bs-primary-rgb, 115, 103, 240), 0.2);
    border-radius: 4px;
    overflow: hidden;
    margin: 0 auto;
}

.loading-progress .progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--bs-primary, #7367f0), var(--bs-primary, #9e95f5));
    border-radius: 4px;
    width: 0%;
    transition: width 0.3s ease;
    animation: progress-shimmer 1.5s ease-in-out infinite;
}

@keyframes progress-shimmer {
    0% {
        background-position: -200px 0;
    }
    100% {
        background-position: 200px 0;
    }
}

/* ==================== PAGE TRANSITIONS ==================== */

/* Fade in da página */
body {
    animation: page-fade-in 0.3s ease;
}

@keyframes page-fade-in {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ==================== MENU ACTIVE ENHANCEMENT ==================== */

/* Melhor highlight do menu ativo */
.navigation-main .nav-item.active {
    position: relative;
}

.navigation-main .nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--bs-primary, #7367f0), var(--bs-primary, #9e95f5));
    border-radius: 0 4px 4px 0;
    animation: menu-active-slide 0.3s ease;
}

@keyframes menu-active-slide {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.navigation-main .nav-item.active > a {
    background: rgba(var(--bs-primary-rgb, 115, 103, 240), 0.08);
    color: var(--bs-primary, #7367f0) !important;
    font-weight: 500;
    transition: all 0.3s ease;
}

.navigation-main .nav-item.active > a .menu-icon,
.navigation-main .nav-item.active > a i,
.navigation-main .nav-item.active > a svg {
    color: var(--bs-primary, #7367f0) !important;
    stroke: var(--bs-primary, #7367f0) !important;
}

/* ==================== HOVER STATES ==================== */

.navigation-main .nav-item > a {
    transition: all 0.2s ease;
}

.navigation-main .nav-item:not(.active):hover > a {
    background: rgba(var(--bs-primary-rgb, 115, 103, 240), 0.04);
    padding-left: 1.3rem;
}

/* ==================== LINK PRELOAD INDICATOR ==================== */

a[rel="prefetch"]::after,
a.preloading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--bs-primary, #7367f0), transparent);
    animation: link-preload 1s ease-in-out;
    pointer-events: none;
}

@keyframes link-preload {
    from {
        opacity: 0;
        transform: scaleX(0);
    }
    to {
        opacity: 1;
        transform: scaleX(1);
    }
}

/* ==================== PERFORMANCE OPTIMIZATIONS ==================== */

/* GPU acceleration para animações suaves */
#page-transition-overlay,
.loading-content,
.navigation-main .nav-item.active::before {
    will-change: transform, opacity;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

/* Desabilitar transições durante scroll (performance) */
.scrolling * {
    transition: none !important;
}

/* ==================== RESPONSIVE ==================== */

@media (max-width: 768px) {
    .loading-content {
        padding: 30px;
    }

    .loading-spinner .spinner-border {
        width: 2.5rem;
        height: 2.5rem;
    }

    .loading-text {
        font-size: 14px;
    }

    .loading-progress {
        width: 150px;
    }
}

/* ==================== ACCESSIBILITY ==================== */

/* Respeitar preferência de movimento reduzido */
@media (prefers-reduced-motion: reduce) {
    #page-transition-overlay,
    .loading-spinner .spinner-border,
    .navigation-main .nav-item.active::before,
    body {
        animation: none !important;
        transition: none !important;
    }

    .loading-spinner .spinner-border {
        animation: spinner-pulse 3s ease-in-out infinite !important;
    }
}

/* ==================== PRINT ==================== */

@media print {
    #page-transition-overlay {
        display: none !important;
    }
}

/* ==================== LOADING STATES ==================== */

/* Indicador de carregamento para formulários */
form.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.6;
}

form.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 30px;
    height: 30px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--bs-primary, #7367f0);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Botão com loading */
.btn.loading {
    position: relative;
    pointer-events: none;
    color: transparent !important;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    color: inherit;
}