/**
 * Preloader Styles
 * Baseado no Canvas Template
 */

/* Overlay do preloader */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #ffffff;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

#preloader.loaded {
    opacity: 0;
    visibility: hidden;
}

/* Container do spinner */
.preloader-spinner {
    position: relative;
    width: 60px;
    height: 60px;
}

/* Estilo 1: Spinner circular simples */
.spinner-circular {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-top-color: #007bff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Estilo 2: Dual Ring */
.spinner-dual-ring {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(0, 0, 0, 0.1);
    border-top-color: #007bff;
    border-bottom-color: #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Estilo 3: Dots pulsantes */
.spinner-dots {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.spinner-dots span {
    width: 12px;
    height: 12px;
    background: #007bff;
    border-radius: 50%;
    animation: pulse-dot 1.4s infinite ease-in-out both;
}

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

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

/* Estilo 4: Bounce */
.spinner-bounce {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    height: 50px;
    gap: 8px;
}

.spinner-bounce span {
    width: 10px;
    height: 10px;
    background: #007bff;
    border-radius: 50%;
    animation: bounce-loading 1.4s infinite ease-in-out both;
}

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

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

/* Estilo 5: Fade (Grid de 9 quadrados) */
.spinner-grid {
    width: 50px;
    height: 50px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-gap: 5px;
}

.spinner-grid span {
    background: #007bff;
    border-radius: 2px;
    animation: fade-grid 1.2s infinite ease-in-out;
}

.spinner-grid span:nth-child(1) { animation-delay: 0s; }
.spinner-grid span:nth-child(2) { animation-delay: 0.1s; }
.spinner-grid span:nth-child(3) { animation-delay: 0.2s; }
.spinner-grid span:nth-child(4) { animation-delay: 0.1s; }
.spinner-grid span:nth-child(5) { animation-delay: 0.2s; }
.spinner-grid span:nth-child(6) { animation-delay: 0.3s; }
.spinner-grid span:nth-child(7) { animation-delay: 0.2s; }
.spinner-grid span:nth-child(8) { animation-delay: 0.3s; }
.spinner-grid span:nth-child(9) { animation-delay: 0.4s; }

/* Estilo 6: Heartbeat */
.spinner-heartbeat {
    width: 50px;
    height: 50px;
    background: #007bff;
    border-radius: 50%;
    animation: heartbeat 1.2s infinite cubic-bezier(0.215, 0.61, 0.355, 1);
}

/* Texto de loading (opcional) */
.preloader-text {
    position: absolute;
    bottom: -40px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 14px;
    color: #666;
    font-weight: 500;
    white-space: nowrap;
}

/* Com logo */
.preloader-with-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
}

.preloader-logo {
    max-width: 150px;
    height: auto;
    opacity: 0.9;
}

/* Animações */
@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@keyframes pulse-dot {
    0%, 80%, 100% {
        transform: scale(0);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes bounce-loading {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1);
    }
}

@keyframes fade-grid {
    0%, 70%, 100% {
        opacity: 0.3;
    }
    35% {
        opacity: 1;
    }
}

@keyframes heartbeat {
    0% {
        transform: scale(0.95);
        opacity: 0.7;
    }
    5% {
        transform: scale(1.1);
        opacity: 1;
    }
    39% {
        transform: scale(0.85);
        opacity: 0.7;
    }
    45% {
        transform: scale(1);
        opacity: 1;
    }
    60% {
        transform: scale(0.95);
        opacity: 0.7;
    }
    100% {
        transform: scale(0.9);
        opacity: 0.7;
    }
}

/* Variação com cor customizável via CSS Variable */
#preloader[data-color] .spinner-circular,
#preloader[data-color] .spinner-dual-ring {
    border-top-color: var(--preloader-color, #007bff);
}

#preloader[data-color] .spinner-dots span,
#preloader[data-color] .spinner-bounce span,
#preloader[data-color] .spinner-grid span,
#preloader[data-color] .spinner-heartbeat {
    background: var(--preloader-color, #007bff);
}

/* Tema escuro */
#preloader.dark {
    background: #1a1a1a;
}

#preloader.dark .preloader-text {
    color: #ccc;
}

/* Mobile */
@media (max-width: 767px) {
    .preloader-spinner {
        width: 50px;
        height: 50px;
    }
    
    .spinner-circular,
    .spinner-dual-ring,
    .spinner-heartbeat {
        width: 40px;
        height: 40px;
    }
    
    .preloader-logo {
        max-width: 120px;
    }
}

/* Prevenir scroll durante loading */
body.preloader-active {
    overflow: hidden;
}