* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Roboto", sans-serif;
}

a {
    text-decoration: none;
    color: inherit;
}

body {
    background-color: #000000;
    color: #ffffff;
}

.interface {
    max-width: 1100px;
    margin: auto;
    padding: 0 5%;
}

.btn-voltar {
    position: fixed;
    top: 24px;
    left: 32px;
    z-index: 10;
    font-size: 44px;
    color: #cacaca;
    line-height: 1;
    border-radius: 50%;
    transition: 0.2s;
}

.btn-voltar:hover {
    color: #80D8FF;
    transform: scale(1.05);
}

.kicker {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: #80D8FF;
}

h1 span,
h2 span {
    color: #80D8FF;
}

/* Topo */

.topo {
    padding: 90px 0 50px;
    text-align: center;
}

.topo h1 {
    font-size: 54px;
    margin: 12px 0 18px;
}

.topo p {
    max-width: 720px;
    margin: 0 auto;
    font-size: 19px;
    line-height: 1.6;
    color: #a9b8c6;
}

.topo-links {
    margin-top: 28px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
}

.botao {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 30px;
    background-color: #80D8FF;
    color: #000000;
    font-size: 16px;
    font-weight: 700;
    transition: 0.2s;
}

.botao:hover {
    box-shadow: 0 0 12px #1ba7e4;
    transform: scale(1.04);
}

.botao-secundario {
    background-color: transparent;
    color: #80D8FF;
    border: 1px solid #80d8ff77;
}

/* Diagrama: Internet -> Cloudflare -> as duas máquinas, ligadas pelo Tailscale */

.diagrama {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 36px 30px 40px;
    margin-bottom: 70px;
    border: 1px solid #80d8ff26;
    border-radius: 24px;
    background: radial-gradient(ellipse at top, #0f2230 0%, #0a0f14 60%);
}

.no {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 22px;
    border-radius: 16px;
    background-color: #0f1922;
    border: 1px solid #80d8ff40;
    max-width: 440px;
}

.no i {
    font-size: 28px;
    color: #80D8FF;
}

.no-cloudflare i {
    color: #f6821f;
}

.no b,
.maquina b {
    display: block;
    font-size: 18px;
}

.no span,
.maquina-topo span {
    font-size: 14px;
    color: #a9b8c6;
}

.ligacao {
    width: 2px;
    height: 30px;
    background-color: #80d8ff66;
}

/* um traço desce da Cloudflare e se divide para as duas máquinas */
.ramos {
    position: relative;
    width: calc(50% + 70px);
    height: 30px;
    margin-top: 30px;
    border: 2px solid #80d8ff66;
    border-bottom: none;
    border-radius: 14px 14px 0 0;
}

.ramos::before {
    content: "";
    position: absolute;
    left: 50%;
    top: -32px;
    width: 2px;
    height: 30px;
    background-color: #80d8ff66;
}

.maquinas {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 140px 1fr;
    align-items: stretch;
}

.maquina {
    display: block;
    padding: 18px 20px 20px;
    border-radius: 18px;
    background-color: #0f1922;
    border: 1px solid var(--cor);
    box-shadow: 0 0 30px color-mix(in srgb, var(--cor) 25%, transparent);
    transition: 0.25s;
}

.maquina:hover {
    transform: translateY(-4px);
}

.maquina-orangepi {
    --cor: #ff8a1f;
}

.maquina-servidor {
    --cor: #e95420;
}

.maquina-topo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

.maquina-topo i {
    font-size: 30px;
    color: var(--cor);
}

.maquina ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.maquina li {
    font-size: 13px;
    padding: 5px 10px;
    border-radius: 20px;
    background-color: #ffffff0f;
    border: 1px solid #ffffff22;
    color: #dfe7ee;
}

.maquina li::before {
    content: "";
    display: inline-block;
    width: 7px;
    height: 7px;
    margin-right: 6px;
    border-radius: 50%;
    background-color: #4ade80;
    vertical-align: 1px;
}

.ponte {
    position: relative;
    align-self: center;
    height: 2px;
    margin: 0 8px;
    border-top: 2px dashed #80d8ff88;
}

.ponte span {
    position: absolute;
    left: 50%;
    top: -16px;
    transform: translateX(-50%);
    white-space: nowrap;
    padding: 5px 12px;
    border-radius: 20px;
    background-color: #0a0f14;
    border: 1px solid #80d8ff55;
    font-size: 13px;
    font-weight: 600;
    color: #80D8FF;
}

/* Uma seção para cada máquina */

.servidor {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 50px;
    margin-bottom: 80px;
    scroll-margin-top: 90px;
}

.servidor-invertido .servidor-capa {
    order: 2;
}

.servidor-capa {
    width: 100%;
    border-radius: 20px;
    border: 1px solid #80d8ff26;
}

.servidor-texto h2 {
    font-size: 40px;
    margin: 8px 0 14px;
}

.servidor-texto p {
    font-size: 17px;
    line-height: 1.6;
    color: #a9b8c6;
    margin-bottom: 20px;
}

/* ficha técnica da máquina */
.ficha {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    margin-bottom: 22px;
}

.ficha div {
    padding: 10px 14px;
    border-radius: 12px;
    background-color: #0f1922;
    border: 1px solid #80d8ff26;
}

.ficha dt {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: #80D8FF;
}

.ficha dd {
    margin-top: 2px;
    font-size: 14px;
    color: #e6edf3;
}

.servicos {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.servicos li {
    display: grid;
    grid-template-columns: 28px 120px 1fr;
    align-items: center;
    gap: 8px;
    font-size: 15px;
}

.servicos i {
    color: #80D8FF;
    font-size: 18px;
}

.servicos span {
    color: #a9b8c6;
}

/* O que liga tudo */

.pecas {
    padding-bottom: 90px;
}

.pecas h2 {
    font-size: 40px;
    text-align: center;
    margin-bottom: 30px;
}

.pecas-grade {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.peca {
    padding: 24px;
    border-radius: 20px;
    background: linear-gradient(180deg, #0f1922 0%, #0a0f14 100%);
    border: 1px solid #80d8ff26;
}

.peca i {
    font-size: 28px;
    color: #80D8FF;
}

.peca h3 {
    font-size: 20px;
    margin: 10px 0 8px;
}

.peca p {
    font-size: 15px;
    line-height: 1.6;
    color: #a9b8c6;
}

.peca code {
    font-family: "Roboto Mono", monospace;
    font-size: 13px;
    padding: 2px 6px;
    border-radius: 6px;
    background-color: #ffffff14;
    color: #cdeeff;
}

@media screen and (max-width: 820px) {
    .btn-voltar {
        top: 16px;
        left: 16px;
        font-size: 36px;
    }

    .topo h1 {
        font-size: 38px;
    }

    .topo p {
        font-size: 17px;
    }

    .diagrama {
        padding: 28px 18px 30px;
    }

    /* no celular as máquinas ficam uma embaixo da outra, com o Tailscale no meio */
    .ramos {
        width: 2px;
        height: 30px;
        margin-top: 0;
        border: none;
        background-color: #80d8ff66;
    }

    .ramos::before {
        display: none;
    }

    .maquinas {
        grid-template-columns: 1fr;
    }

    .ponte {
        width: 2px;
        height: 60px;
        margin: 0 auto;
        border-top: none;
        border-left: 2px dashed #80d8ff88;
    }

    .ponte span {
        top: 50%;
        transform: translate(-50%, -50%);
    }

    .servidor {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .servidor-invertido .servidor-capa {
        order: 0;
    }

    .servicos li {
        grid-template-columns: 24px 100px 1fr;
        font-size: 14px;
    }

    .pecas-grade {
        grid-template-columns: 1fr;
    }
}