@import url('https://fonts.googleapis.com/css2?family=Noto+Serif:ital,wght@0,100..900;1,100..900&display=swap');

:root {
    --primary-color: rgb(91, 73, 255);
    --secondary-color: rgb(140, 128, 248);
    --error-color: #721c24;
    --error-bg-color: #f8d7da;
    --success-color: #155724;
    --success-bg-color: #d4edda;
    --border-radius: 4px;
    --transition-duration: 0.4s;
    --transition-ease: ease;
    --font-size-base: 16px;
    --font-family-base: "Noto Serif", serif;
    --container-width: 900px;
    --container-width-mobile: 85vw;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html, body {
    height: 100%;
    margin: 0;
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
}

body {
    width: var(--container-width);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    min-height: 100vh; 
}

main {
    flex: 1;
    padding: 0 20px;
}

header,
footer {
    cursor: default;
    justify-content: center;
    text-align: center;
    padding: 10px 0;
}

h1, h2, h3, h4, h5, h6 {
    cursor: default;
}

header{
    border-bottom: 2px solid #000000; 
    padding-bottom: 1em;
    position: relative; 
}


h1 {
    margin: 0;
    font-size: 4.8em;
}

h2 {
    font-size: 2em;
    text-align: center;
}

.text-left {
    text-align: left;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
    gap: 15px;
}

nav ul li a {
    position: relative;
    color: black;
    text-decoration: none;
    font-size: 1.3em;
    padding-bottom: 5px;
    transition: color var(--transition-duration) var(--transition-ease), 
                width var(--transition-duration) var(--transition-ease);
}

nav ul li a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    height: 2px;
    width: 0;
    background-color: var(--primary-color);
    transition: width var(--transition-duration) var(--transition-ease);
}

nav ul li a:hover {
    color: var(--primary-color);
}

nav ul li a:hover::after {
    width: 100%;
}

p {
    text-align: justify;
    text-indent: 1em;
    overflow-wrap: break-word;
}

img#foto-eu {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    margin-right: 10px;
    float: left;
    cursor: grab;
}

.icone {
    vertical-align: bottom;
    margin-bottom: 0.1em;
}

.no-identation {
    text-indent: 0;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-duration) var(--transition-ease);
}

a:hover {
    color: var(--secondary-color);
}

.card {
    border: 1px solid black;
    border-radius: 10px;
    padding: 0 1em;
    margin: 1em 0;
}

form {
    margin: 0 auto;
}

.input-group {
    margin-bottom: 1.5em;
}

label {
    display: block;
    margin-bottom: 0.5em;
    font-weight: bold;
}

input[type="text"],
input[type="submit"] {
    font-size: 1em;
    border-radius: var(--border-radius);
}

input[type="text"] {
    width: 100%;
    padding: 0.5em;
    border: 1px solid #ccc;
}

.input-row {
    display: flex;
    gap: 0.5em;
}

.input-row .input-group {
    flex: 1;
}

input[type="submit"] {
    background-color: var(--primary-color);
    color: white;
    padding: 0.5em 1em;
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-duration) var(--transition-ease);
}

input[type="submit"]:hover {
    background-color: var(--secondary-color);
}

.alert {
    padding: 1.5em;
    margin-bottom: 2em;
    border: 1px solid transparent;
    border-radius: var(--border-radius);
    font-weight: bold;
    text-align: center;
}

.error-message {
    background-color: var(--error-bg-color);
    color: var(--error-color);
    border-color: var(--error-color);
}

.success-message {
    background-color: var(--success-bg-color);
    color: var(--success-color);
    border-color: var(--success-color);
}

.artigo {
    padding-left: 10px;
}

.autores {
    font-style: italic;
    font-size: 0.9em;
}

.periodico, .evento, .ano {
    font-size: 0.9em;
}

@media (max-width: 1000px) {
    body {
        width: 90%;
    }
}

@media (max-width: 500px) {
    nav ul {
        flex-direction: column;
        align-items: center;
        gap: 0.2em;
    }
}