@charset "UTF-8";

/* ========================================
   VARIÁVEIS CSS (ROOT)
   ======================================== */
:root {
    --cor-fundo-principal: #04091A;
    --cor-fundo-secundario: #070D26;
    --cor-texto-claro: #E0F2F1;
    --cor-acento-neon: #71FF52;
    --cor-sombra: rgba(0, 0, 0, 0.6);
    --cor-erro: #FF6B6B;
    --espacamento-base: 1rem;
    --borda-radius: 0.5rem;
    --transicao-suave: all 0.3s ease-in-out;
}

/* ========================================
   RESET E ESTILOS GERAIS
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-image:
        url(../imagens/universo_g.jpg),
        linear-gradient(to bottom, var(--cor-fundo-principal), var(--cor-fundo-secundario));
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--cor-texto-claro);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--espacamento-base);
}

main {
    background-color: var(--cor-fundo-secundario);
    padding: clamp(1.5rem, 5vw, 2.5rem);
    border-radius: var(--borda-radius);
    box-shadow: 0 0 2rem var(--cor-sombra);
    width: min(90%, 500px);
    margin: 2rem auto;
    transition: var(--transicao-suave);
}

h1 {
    text-align: center;
    color: var(--cor-acento-neon);
    text-shadow: 0 0 0.5rem var(--cor-acento-neon);
    margin-bottom: 1.5rem;
    font-size: clamp(1.5rem, 4vw, 2.5rem);
}

/* ========================================
   ESTILOS PARA FORMULÁRIO
   ======================================== */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}   

form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

fieldset {
    border: 2px solid var(--cor-acento-neon);
    border-radius: var(--borda-radius);
    padding: 1.5rem;
    background-color: rgba(7, 13, 38, 0.8);
}

legend {
    color: var(--cor-acento-neon);
    font-weight: bold;
    padding: 0 0.5rem;
}

form p {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

form label {
    font-weight: bold;
    color: var(--cor-texto-claro);
}

form input[type="text"],
form input[type="date"],
form input[type="password"] {
    background-color: transparent;
    border: none;
    border-bottom: 2px solid var(--cor-acento-neon);
    color: var(--cor-texto-claro);
    padding: 0.75rem 0;
    font-size: 1rem;
    outline: none;
    transition: var(--transicao-suave);
}

form input[type="text"]:focus,
form input[type="date"]:focus,
form input[type="password"]:focus {
    border-color: var(--cor-texto-claro);
    box-shadow: 0 0 0.5rem var(--cor-acento-neon);
}

form input::placeholder {
    color: rgba(224, 242, 241, 0.6);
}

small {
    color: rgba(224, 242, 241, 0.7);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* ========================================
   ESTILOS PARA BOTÕES
   ======================================== */
.button-group {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

input[type="submit"],
input[type="reset"],
#btn-close {
    background-color: var(--cor-acento-neon);
    color: var(--cor-fundo-principal);
    border: none;
    padding: 0.875rem 1.5rem;
    border-radius: 0.375rem;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transicao-suave);
    flex: 1;
    font-size: 1rem;
}

input[type="submit"]:hover,
input[type="reset"]:hover,
#btn-close:hover {
    transform: translateY(-0.125rem);
    box-shadow: 0 0.5rem 1rem rgba(113, 255, 82, 0.4);
}

input[type="submit"]:active,
input[type="reset"]:active,
#btn-close:active {
    transform: translateY(0);
}

/* ========================================
   ESTILOS PARA MODAL (POPUP)
   ======================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
    /* Efeito de desfoque no fundo */
}

.modal-overlay {
    position: relative;
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    overflow-y: auto;
    background-color: var(--cor-fundo-secundario);
    border: 2px solid var(--cor-acento-neon);
    border-radius: var(--borda-radius);
    box-shadow: 0 0 3rem var(--cor-sombra);
    padding: 2rem;
    text-align: center;
    opacity: 0;
    transform: scale(0.8) translateY(-2rem);
    transition: var(--transicao-suave);
}

.modal:not(.hidden) .modal-overlay {
    opacity: 1;
    transform: scale(1) translateY(0);
}

#modal-message {
    font-size: 1.125rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    opacity: 0;
    transform: translateY(1rem);
    transition: var(--transicao-suave);
}

#modal-message.fade-in {
    opacity: 1;
    transform: translateY(0);
}

.hidden {
    display: none;
}

/* Fechar modal clicando fora */
.modal-overlay {
    cursor: pointer;
}

.modal-content {
    cursor: default;
    width: 100%;
}

/* ========================================
   ESTILOS PARA RODAPÉ
   ======================================== */
footer {
    text-align: center;
    padding: 2rem 0;
    font-size: 0.875rem;
    opacity: 0.8;
    width: 100%;
}

footer a {
    color: var(--cor-acento-neon);
    text-decoration: none;
    font-weight: bold;
    transition: var(--transicao-suave);
}

footer a:hover {
    text-shadow: 0 0 0.5rem var(--cor-acento-neon);
}

/* ========================================
   MÍDIA QUERIES PARA RESPONSIVIDADE
   ======================================== */

/* Mobile: Telas pequenas (< 480px) */
@media (max-width: 479px) {
    body {
        padding: 0.5rem;
    }

    main {
        width: 100%;
        padding: 1rem;
        margin: 1rem 0;
        border-radius: 0.25rem;
    }

    .button-group {
        flex-direction: column;
    }

    h1 {
        margin-bottom: 1rem;
    }

    fieldset {
        padding: 1rem;
    }

    .modal-overlay {
        width: 95%;
        padding: 1.5rem;
        max-height: 90vh;
    }
}

/* Tablet: Telas médias (480px - 768px) */
@media (min-width: 480px) and (max-width: 768px) {
    main {
        width: 95%;
        padding: 2rem;
    }

    .button-group {
        flex-direction: row;
    }

    body {
        background-attachment: scroll;
        /* Evita fixed em tablets antigos */
    }

    .modal-overlay {
        width: 80%;
    }
}

/* Desktop: Telas grandes (> 768px) */
@media (min-width: 769px) {
    main {
        max-width: 500px;
        padding: 3rem;
    }

    body {
        padding: 2rem;
    }

    #modal-message {
        font-size: 1.25rem;
    }
}

/* ========================================
   ESTILOS PARA ERROS (USADO PELO JS)
   ======================================== */
.error {
    color: var(--cor-erro);
    border-color: var(--cor-erro) !important;
    box-shadow: 0 0 0.5rem var(--cor-erro) !important;
}

.error-message {
    color: var(--cor-erro);
    background-color: rgba(255, 107, 107, 0.1);
    padding: 1rem;
    border-radius: var(--borda-radius);
    border-left: 4px solid var(--cor-erro);
    margin: 1rem 0;
}