/**
 * Preloader Moderno - CSS
 * Design ultra moderno com animações GPU-accelerated 60fps
 * Versão: 1.0.0
 */

/* ===================================
   CSS VARIABLES - DESIGN SYSTEM
   =================================== */
:root {
    --pm-primary: #1a365d;
    --pm-secondary: #2c5282;
    --pm-accent: #1677be;
    --pm-light: #f0f9ff;
    --pm-white: #ffffff;
    --pm-gray-100: #f3f4f6;
    --pm-gray-600: #4b5563;
    --pm-gray-800: #1f2937;
    
    --pm-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --pm-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --pm-shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    --pm-transition: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===================================
   PRELOADER CONTAINER
   =================================== */
.pm-preloader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: auto;
    height: auto;
    background: #ffffff;
    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: opacity 0.8s var(--pm-transition), visibility 0.8s var(--pm-transition);
    will-change: opacity;
    box-sizing: border-box;
    /* iOS safe-area + reliable viewport units */
    min-height: 100vh;
    min-height: 100svh;
    min-height: 100dvh;
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
    -webkit-transform: translateZ(0);
            transform: translateZ(0);
}

/* Estado escondido */
.pm-preloader.pm-hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

/* ===================================
   PRELOADER CONTENT
   =================================== */
.pm-preloader-content {
    text-align: center;
    position: relative;
    z-index: 2;
    max-width: 100%;
    padding: 0 20px;
}

/* ===================================
   LOGO WRAPPER
   =================================== */
.pm-logo-wrapper {
    position: relative;
    width: 200px;
    height: 200px;
    margin: 0 auto 30px;
    display: grid;
    place-items: center;
}

/* Logo */
.pm-logo {
    width: 140px;
    height: auto;
    max-width: 100%;
    display: block;
    margin: 0 auto;
    position: relative;
    z-index: 3;
    animation: pm-pulse-logo 2s ease-in-out infinite;
    will-change: transform, opacity;
    /* Sombra via pseudo-element para não afetar performance */
}

/* Animação do logo - GPU accelerated */
@keyframes pm-pulse-logo {
    0%, 100% {
        transform: scale3d(1, 1, 1);
        opacity: 1;
    }
    50% {
        transform: scale3d(1.05, 1.05, 1);
        opacity: 0.95;
    }
}

/* ===================================
   CÍRCULO DE PROGRESSO SVG
   =================================== */
.pm-progress-ring {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    transform: rotate3d(0, 0, 1, -90deg);
    transform-origin: 50% 50%;
    color: #1a365d; /* define currentColor base */
    will-change: transform;
    pointer-events: none;
    /* Sombra removida para melhor performance */
}

.pm-progress-ring-track {
    opacity: 0.18;
}

.pm-progress-ring-circle {
    stroke-dasharray: 565.48; /* 2 * PI * 90 */
    stroke-dashoffset: 141.37; /* 25% fixo para evitar animação de stroke */
    vector-effect: non-scaling-stroke;
    stroke-linecap: round;
    /* Animação simplificada apenas por opacity */
    animation: pm-pulse-ring 2s ease-in-out infinite;
}

/* Animação círculo - GPU accelerated */
@keyframes pm-pulse-ring {
    0%, 100% {
        opacity: 0.6;
    }
    50% {
        opacity: 1;
    }
}

/* ===================================
   TEXTO DE CARREGAMENTO
   =================================== */
.pm-loading-text {
    font-size: 18px;
    font-weight: 600;
    color: var(--pm-primary);
    margin-bottom: 25px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    flex-wrap: wrap;
    padding: 0 10px;
    max-width: 100%;
}

/* Pontos animados */
.pm-dots {
    display: inline-flex;
    gap: 2px;
}

.pm-dot {
    display: inline-block;
    animation: pm-bounce-dot 1.4s infinite;
    font-size: 20px;
    line-height: 1;
}

.pm-dot:nth-child(1) {
    animation-delay: 0s;
}

.pm-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.pm-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes pm-bounce-dot {
    0%, 60%, 100% {
        transform: translate3d(0, 0, 0);
        opacity: 1;
    }
    30% {
        transform: translate3d(0, -10px, 0);
        opacity: 0.7;
    }
}

/* ===================================
   BARRA DE PROGRESSO
   =================================== */
.pm-progress-bar {
    width: 280px;
    max-width: 100%;
    height: 6px;
    background: var(--pm-gray-100);
    border-radius: 10px;
    overflow: hidden;
    margin: 0 auto;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.06);
}

.pm-progress-bar-fill {
    height: 100%;
    width: 95%; /* Largura fixa para evitar animação de width */
    background: linear-gradient(90deg, #1a365d 0%, #2c5282 50%, #1677be 100%);
    background-size: 200% 100%;
    border-radius: 10px;
    animation: pm-shimmer 2s linear infinite;
    box-shadow: 0 2px 8px rgba(26, 54, 93, 0.3);
    will-change: transform;
    transform: translate3d(0, 0, 0);
}

@keyframes pm-shimmer {
    0% {
        background-position: 200% 0;
        transform: translate3d(0, 0, 0);
    }
    100% {
        background-position: -200% 0;
        transform: translate3d(0, 0, 0);
    }
}

/* ===================================
   VARIANTES DE DESIGN
   =================================== */

/* Tipo: Simples */
.pm-preloader-simples .pm-progress-ring {
    display: none;
}

.pm-preloader-simples .pm-logo {
    width: 120px;
}

/* Tipo: Minimalista */
.pm-preloader-minimalista .pm-progress-ring,
.pm-preloader-minimalista .pm-progress-bar {
    display: none;
}

.pm-preloader-minimalista .pm-logo {
    width: 100px;
    animation: pm-spin 1.5s linear infinite;
}

@keyframes pm-spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* ===================================
   EFEITO DE FUNDO ANIMADO
   =================================== */
.pm-preloader::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(26, 54, 93, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: pm-move-bg 20s linear infinite;
    will-change: transform;
}

@keyframes pm-move-bg {
    0% {
        transform: translate3d(0, 0, 0);
    }
    100% {
        transform: translate3d(50px, 50px, 0);
    }
}

/* ===================================
   RESPONSIVIDADE
   =================================== */
@media (max-width: 768px) {
    .pm-preloader-content {
        padding: 0 15px;
    }
    
    .pm-logo-wrapper {
        width: 160px;
        height: 160px;
        margin: 0 auto 20px;
    }
    
    .pm-logo {
        width: 110px;
        max-width: 90%;
    }
    
    .pm-progress-ring {
        width: 160px;
        height: 160px;
    }
    
    .pm-progress-ring-circle {
        r: 72;
        stroke-dasharray: 452.39;
        stroke-dashoffset: 452.39;
    }
    
    .pm-loading-text {
        font-size: 16px;
        margin-bottom: 20px;
    }
    
    .pm-progress-bar {
        width: 240px;
        max-width: calc(100% - 40px);
    }
}

@media (max-width: 480px) {
    .pm-preloader-content {
        padding: 0 10px;
    }
    
    .pm-logo-wrapper {
        width: 120px;
        height: 120px;
        margin: 0 auto 15px;
    }
    
    .pm-logo {
        width: 80px;
        max-width: 85%;
    }
    
    .pm-progress-ring {
        width: 120px;
        height: 120px;
    }
    
    .pm-progress-ring-circle {
        r: 54;
        stroke-dasharray: 339.29;
        stroke-dashoffset: 339.29;
        stroke-width: 3;
    }
    
    .pm-loading-text {
        font-size: 14px;
        margin-bottom: 15px;
        padding: 0 5px;
    }
    
    .pm-progress-bar {
        width: 180px;
        max-width: calc(100% - 20px);
        height: 4px;
    }
}

/* ===================================
   ACESSIBILIDADE
   =================================== */
@media (prefers-reduced-motion: reduce) {
    .pm-preloader,
    .pm-logo,
    .pm-progress-ring,
    .pm-progress-bar-fill,
    .pm-dot,
    .pm-preloader::before {
        animation: none !important;
        transition: none !important;
    }
    
    .pm-preloader {
        transition: opacity 0.3s ease, visibility 0.3s ease;
    }
}

/* ===================================
   PERFORMANCE
   =================================== */
.pm-preloader,
.pm-logo,
.pm-progress-ring,
.pm-progress-bar-fill,
.pm-preloader::before {
    backface-visibility: hidden;
    perspective: 1000px;
    transform: translateZ(0);
}