/* === Variáveis e reset === */
:root {
    --cor-primaria: #2980b9;
    --cor-secundaria: #ecf0f1; /* texto claro */
    --cor-fundo: #2c3e50;       /* fundo body */
    --cor-clara: #34495e;       /* fundo das boxes */
}

body.light-mode {
    --cor-primaria: #3498db;
    --cor-secundaria: #2c3e50; /* cor do texto */
    --cor-fundo: #f4f4f4;       /* fundo do body light */
    --cor-clara: #ffffff;       /* fundo de boxes light */
}


* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', sans-serif;
    background-color: var(--cor-fundo);
    color: var(--cor-secundaria);
    line-height: 1.6;
    overflow-x: hidden;
}

/* === Header === */
header {
    background-color: var(--cor-primaria);
    color: white;
    padding: 2rem 1rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

header h1 {
    font-size: 2.5rem;
    opacity: 0;
    transform: translateY(-20px);
    animation: fadeInUp 1s forwards;
}

header p {
    opacity: 0;
    transform: translateY(-10px);
    animation: fadeInUp 1s 0.3s forwards;
}

.header-buttons {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    display: flex;
    flex-direction: column; /* empilha verticalmente */
    gap: 0.5rem;           /* espaçamento entre os botões */
    z-index: 10;           /* garante que fique acima de tudo */
}

.btn-lang, #lightModeToggle {
    background-color: var(--cor-clara);
    color: var(--cor-primaria);
    border: 2px solid var(--cor-primaria);
    padding: 0.3rem 0.7rem;
    border-radius: 6px;
    font-weight: bold;
    font-size: 0.9rem;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.3s ease, color 0.3s ease, transform 0.2s ease;
}

.btn-lang:hover, #lightModeToggle:hover {
    background-color: var(--cor-primaria);
    color: var(--cor-clara);
    transform: scale(1.1);
}


/* === Main === */
main {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 2rem;
    max-width: 1200px;
    margin: auto;
}

/* Sections com fade-in ao aparecer */
section {
    background: var(--cor-clara);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.08);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}

section.visible {
    opacity: 1;
    transform: translateY(0);
}

section h2 {
    margin-bottom: 1rem;
    color: var(--cor-secundaria);
}

/* Lista */
ul {
    padding-left: 1.2rem;
}

/* PROJECT CARDS */

.projetos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

.project {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    background: var(--cor-clara);
    border-radius: 8px;
    border: 1px solid #ccc;
    padding: 1em;
    text-decoration: none;
    color: inherit;
    max-height: 400px;          /* limita altura máxima do card */
    overflow: hidden;            /* evita que conteúdo grande estoure */
    transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.5s ease;
    opacity: 0;                  /* para animação de fade-in */
    transform: translateY(20px);
    background-size: 200% 200%;  /* para gradiente animado */
}

/* Fade-in ao scroll */
.project.visible {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.5s ease-out;
    animation: gradientShift 6s ease infinite;
}

/* Hover: expande + tilt + sombra */
.project:hover {
    transform: scale(1.05) rotateZ(1deg);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.25);
    background: var(--cor-primaria);
}

/* Imagens SVG dentro do card */
.project-img {
    width: 100%;
    height: auto;          /* mantém proporção original */
    max-height: 150px;     /* limita altura máxima para não esticar o card */
    display: block;
    margin-bottom: 0.8rem;
    transition: transform 0.3s ease;
}

.project:hover .project-img {
    transform: scale(1.03); /* leve zoom da imagem no hover */
}


/* === Footer === */
footer {
    text-align: center;
    padding: 1rem;
    background: var(--cor-clara);
    font-size: 0.9rem;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}

footer.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Links */
a {
    color: var(--cor-primaria);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Media queries */
@media (max-width: 600px) {
    header h1 {
        font-size: 1.8rem;
    }

    main {
        padding: 1rem;
    }
}

/* Keyframes */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px);}
    to { opacity: 1; transform: translateY(0);}
}

/* Gradiente animado nos projetos */
@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.project {
    animation: gradientShift 6s ease infinite;
}