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

body {
    background: #05070a;
    color: #d8faff;
    font-family: monospace;
    min-height: 100vh;
}

.interface {
    min-height: 100vh;
    border: 1px solid #1b8999;
    box-shadow: 0 0 25px rgba(0, 220, 255, 0.12);
}

/* HEADER */

header {
    height: 90px;
    padding: 20px 30px;

    display: flex;
    justify-content: space-between;
    align-items: center;

    border-bottom: 1px solid #1b8999;
}

h1 {
    font-size: 28px;
    letter-spacing: 6px;
}

header p {
    margin-top: 5px;
    font-size: 11px;
    letter-spacing: 3px;
    opacity: 0.6;
}

.status {
    font-size: 12px;
    letter-spacing: 2px;
}

.indicator {
    display: inline-block;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: #00ff9d;
    box-shadow: 0 0 12px #00ff9d;
    margin-right: 8px;
}

/* MAIN */

main {
    display: flex;
    min-height: calc(100vh - 90px);
}

/* SIDEBAR */

aside {
    width: 190px;
    border-right: 1px solid #1b8999;
    padding: 20px 10px;
}

.nav {
    width: 100%;
    background: transparent;
    color: #8fb8bd;

    border: none;
    padding: 16px 10px;

    text-align: left;
    font-family: monospace;
    letter-spacing: 1px;

    cursor: pointer;
}

.nav:hover,
.nav.active {
    color: #00eaff;
    background: rgba(0, 220, 255, 0.08);
}

/* DASHBOARD */

.dashboard {
    flex: 1;
    padding: 35px;
}

.dashboard h2 {
    font-size: 14px;
    letter-spacing: 3px;
    margin-bottom: 25px;
}

/* CARDS */

.cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

.card {
    border: 1px solid #174c55;
    padding: 22px;
    background: rgba(0, 150, 180, 0.04);
}

.card span {
    display: block;
    font-size: 10px;
    letter-spacing: 2px;
    opacity: 0.6;
}

.card strong {
    display: block;
    margin-top: 12px;
    font-size: 25px;
    color: #00eaff;
}

/* TERMINAL */

.terminal {
    margin-top: 25px;
    border: 1px solid #174c55;
}

.terminal-header {
    padding: 10px 15px;
    border-bottom: 1px solid #174c55;
    font-size: 11px;
    letter-spacing: 2px;
}

.terminal-body {
    padding: 18px;
    font-size: 12px;
    line-height: 2;
    color: #7ef9d0;
}

/* MOBILE */

@media (max-width: 800px) {

    main {
        flex-direction: column;
    }

    aside {
        width: 100%;
        display: flex;
        overflow-x: auto;
    }

    .nav {
        min-width: 120px;
    }

    .cards {
        grid-template-columns: repeat(2, 1fr);
    }
}