/* 
* Forma - Site de Portfólio
* Animações
*/

/* Variáveis */
:root {
    --glow-color: rgba(14, 36, 99, 0.3);
    --transition-slow: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Animação de texto revelado */
.reveal-text {
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(20px);
    animation: reveal 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.reveal-text:nth-child(2) {
    animation-delay: 0.3s;
}

@keyframes reveal {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Animação de fade-in para seções */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Animação de fade para mudança de tema */
.theme-transition {
    transition: background-color 0.8s ease, color 0.8s ease;
}

/* Animação de loading */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.8s ease, visibility 0.8s ease;
    backdrop-filter: blur(10px);
}

.loading.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1.2s linear infinite;
    box-shadow: 0 0 15px var(--glow-color);
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* Animação para o menu mobile */
.mobile-menu-open .mobile-menu-btn span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.mobile-menu-open .mobile-menu-btn span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-open .mobile-menu-btn span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* Animação para o menu mobile expandido */
.mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: var(--z-index-modal);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.mobile-menu-open .mobile-nav {
    opacity: 1;
    visibility: visible;
}

.mobile-nav ul {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    text-align: center;
}

.mobile-nav a {
    font-size: 2.5rem;
    font-weight: 300;
    color: var(--text-color);
    transition: all 0.4s ease;
    opacity: 0.8;
    letter-spacing: -0.02em;
}

.mobile-nav a:hover {
    opacity: 1;
    text-shadow: 0 0 20px var(--glow-color);
    transform: scale(1.05);
}

/* Animação de hover para itens do portfólio */
.portfolio-item {
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Animação para botões */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.3);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1, 1) translate(-50%);
    transform-origin: 50% 50%;
}

.btn:hover::after {
    animation: ripple 1.5s ease-out;
}

@keyframes ripple {
    0% {
        transform: scale(0, 0);
        opacity: 0.5;
    }

    20% {
        transform: scale(25, 25);
        opacity: 0.3;
    }

    100% {
        opacity: 0;
        transform: scale(40, 40);
    }
}

/* Animação para scroll */
.scroll-animation {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.scroll-animation.animated {
    opacity: 1;
    transform: translateY(0);
}

/* Animação para o ícone de scroll */
.scroll-icon {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    display: flex;
    justify-content: center;
    padding-top: 10px;
    backdrop-filter: blur(5px);
}

.scroll-icon::before {
    content: '';
    width: 4px;
    height: 8px;
    background-color: var(--text-color);
    border-radius: 2px;
    animation: scrollAnim 2s infinite;
    box-shadow: 0 0 5px var(--glow-color);
}

@keyframes scrollAnim {
    0% {
        transform: translateY(0);
        opacity: 1;
    }

    50% {
        transform: translateY(15px);
        opacity: 0.3;
    }

    100% {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Animação ao mudar de tema */
.theme-toggle-animation {
    animation: rotate 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes rotate {
    0% {
        transform: rotate(0);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* Efeito de glow para links e elementos interativos */
.glow-effect {
    transition: all 0.3s ease;
}

.glow-effect:hover {
    text-shadow: 0 0 10px var(--glow-color);
}

/* Efeito de blur ao foco de elementos */
.blur-focus {
    transition: all 0.4s ease;
}

.blur-focus:focus {
    box-shadow: 0 0 15px var(--glow-color);
    backdrop-filter: blur(5px);
}

/* Animação para links no menu principal */
.main-nav a {
    position: relative;
    transition: var(--transition-slow);
}

.main-nav a:hover {
    letter-spacing: 0.03em;
}

/* Efeito de glow para cartões */
.service-card,
.portfolio-item {
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.service-card:hover,
.portfolio-item:hover {
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15), 0 0 20px var(--glow-color);
}

/* Animação suave para imagens */
img {
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

img:hover {
    filter: brightness(1.05);
}

/* Typewriter Animation */
.typewriter {
    display: inline-block;
    overflow: hidden;
    border-right: 4px solid var(--primary-color);
    white-space: nowrap;
    margin: 0;
    width: 0;
    animation: typing 2.5s steps(30, end) forwards, blink-caret 0.75s step-end infinite;
    max-width: fit-content;
}

@keyframes typing {
    from {
        width: 0
    }

    to {
        width: 100%;
    }
}

/* Fix for variable width text: use max-width or ch units if 100% fails, 
   but strictly for this specific header "From idea to deployment", 
   we can constrain usage or rely on fit-content wrapping.
   However, allow specific override if needed.
*/
.hero h1.typewriter {
    width: 0;
    /* 23 characters in "From idea to deployment" */
    animation: typing-hero 2s steps(23, end) forwards, blink-caret 0.75s step-end infinite;
}

@keyframes typing-hero {
    from {
        width: 0
    }

    to {
        width: 11.5em;
    }
}

@keyframes blink-caret {

    from,
    to {
        border-color: transparent
    }

    50% {
        border-color: var(--primary-color)
    }
}

/* Responsive adjustment for typewriter (JS fallback) */
@media (max-width: 768px) {
    .typewriter {
        white-space: normal;
        border-right: none;
        animation: none !important;
        width: auto !important;
        opacity: 0;
        /* Hide initially for JS to take over */
    }

    .hero h1.typewriter {
        width: auto !important;
        animation: none !important;
    }

    /* Cursor for JS animation */
    .typewriter-cursor {
        display: inline-block;
        width: 3px;
        height: 1em;
        background-color: var(--primary-color);
        margin-left: 5px;
        vertical-align: text-bottom;
        animation: blink-cursor 0.75s step-end infinite;
    }

    @keyframes blink-cursor {

        from,
        to {
            opacity: 0;
        }

        50% {
            opacity: 1;
        }
    }
}