* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: #050505;
    color: #e8e8e8;
    font-family: "Courier New", Courier, monospace;
    min-height: 100vh;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background:
        linear-gradient(
            rgba(255, 255, 255, 0.015) 1px,
            transparent 1px
        );
    background-size: 100% 4px;
    opacity: 0.35;
    z-index: 10;
}

.page {
    width: min(850px, calc(100% - 30px));
    margin: 35px auto;
}

/* HEADER */

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #292929;
    padding-bottom: 14px;
    margin-bottom: 25px;
}

.brand {
    display: flex;
    gap: 14px;
    align-items: center;
    font-weight: bold;
    letter-spacing: 1px;
}

.status {
    color: #777;
    font-size: 12px;
}

.build {
    color: #555;
    font-size: 12px;
}

/* TERMINAL */

.terminal {
    background: #0b0b0b;
    border: 1px solid #292929;
    box-shadow:
        0 0 0 1px #000,
        0 15px 50px rgba(0, 0, 0, 0.7);
}

.terminal-top {
    height: 38px;
    padding: 0 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #111;
    border-bottom: 1px solid #292929;
    color: #777;
    font-size: 12px;
}

.terminal-content {
    padding: 35px;
    min-height: 570px;
}

.system {
    color: #777;
    margin: 5px 0;
    font-size: 13px;
}

.warning {
    color: #b5b5b5;
    margin: 5px 0;
    font-size: 13px;
}

.divider {
    height: 1px;
    background: #252525;
    margin: 28px 0;
}

/* TITLE */

h1 {
    margin: 0;
    font-size: 30px;
    letter-spacing: 3px;
    color: #fff;
}

.description {
    color: #666;
    margin-top: 8px;
}

/* QUESTION */

.question-box {
    margin-top: 35px;
    padding: 22px;
    border: 1px solid #292929;
    background: #080808;
}

.question-label {
    color: #555;
    font-size: 11px;
    margin-bottom: 14px;
    letter-spacing: 2px;
}

#question {
    margin: 0;
    color: #eee;
    font-size: 19px;
    line-height: 1.6;
    font-weight: normal;
}

/* ANSWERS */

.answers {
    display: grid;
    gap: 10px;
    margin-top: 18px;
}

.answer {
    width: 100%;
    text-align: left;
    padding: 15px 17px;
    background: #0d0d0d;
    border: 1px solid #303030;
    color: #ccc;
    font-family: inherit;
    font-size: 14px;
    cursor: pointer;
    transition:
        background 0.15s ease,
        border-color 0.15s ease,
        transform 0.15s ease;
}

.answer:hover {
    background: #151515;
    border-color: #666;
    color: #fff;
    transform: translateX(3px);
}

.answer.correct {
    background: #151515;
    border-color: #aaa;
    color: #fff;
}

.answer.wrong {
    background: #080808;
    border-color: #444;
    color: #555;
    text-decoration: line-through;
}

.answer:disabled {
    cursor: default;
}

/* MESSAGE */

.message {
    min-height: 22px;
    margin-top: 18px;
    color: #aaa;
    font-size: 13px;
}

/* CONTROLS */

.controls {
    display: flex;
    gap: 10px;
    margin-top: 25px;
}

.control-button {
    padding: 10px 14px;
    background: transparent;
    border: 1px solid #292929;
    color: #777;
    font-family: inherit;
    cursor: pointer;
}

.control-button:hover {
    border-color: #666;
    color: #eee;
    background: #111;
}

/* HINT */

.hint {
    margin-top: 15px;
    padding: 12px;
    border-left: 2px solid #555;
    background: #0a0a0a;
    color: #777;
    font-size: 13px;
    display: none;
}

.hint.show {
    display: block;
}

/* FOOTER */

footer {
    margin-top: 25px;
    padding: 25px 5px;
    border-top: 1px solid #222;
    display: flex;
    align-items: center;
    gap: 20px;
}

/* BIGGER LOGO */

.footer-logo img {
    width: 64px;
    height: 64px;
    object-fit: contain;
    display: block;
    filter: grayscale(100%);
    opacity: 0.9;
}

.footer-info {
    color: #666;
    font-size: 12px;
    line-height: 1.7;
}

.footer-links {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.footer-links a {
    color: #888;
    text-decoration: none;
}

.footer-links a:hover {
    color: #fff;
    text-decoration: underline;
}

/* MOBILE */

@media (max-width: 600px) {

    .page {
        width: calc(100% - 20px);
        margin: 20px auto;
    }

    header {
        align-items: flex-start;
        gap: 10px;
    }

    .brand {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .terminal-content {
        padding: 22px;
    }

    h1 {
        font-size: 23px;
    }

    #question {
        font-size: 16px;
    }

    footer {
        align-items: flex-start;
    }

    .footer-logo img {
        width: 52px;
        height: 52px;
    }
}

/* Modern terminal layer */
:root {
    color-scheme: dark;
    --bg: #06100d;
    --panel: #0b1712;
    --panel-raised: #10231a;
    --ink: #e2f2e5;
    --muted: #8ba996;
    --line: rgba(126, 220, 151, .2);
    --green: #7cdb98;
    --amber: #f1c86b;
}

body { background: radial-gradient(circle at 80% 5%, rgba(124,219,152,.1), transparent 28%), linear-gradient(135deg, #06100d, #0b1712 60%, #121d16); color: var(--ink); font-family: "IBM Plex Mono", "Cascadia Code", Consolas, monospace; }
.page { width: min(920px, calc(100% - 28px)); margin: 28px auto; }
body::before { background: linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px); background-size: 100% 5px; opacity: .22; }
header { padding-bottom: 18px; border-bottom-color: var(--line); }
.brand { color: var(--green); }
.status { color: var(--green); }
.build { color: var(--muted); }
.terminal { background: rgba(11,23,18,.88); border-color: var(--line); border-radius: 14px; box-shadow: 0 24px 70px rgba(0,0,0,.4); overflow: hidden; }
.terminal-top { background: rgba(16,35,26,.9); border-bottom-color: var(--line); color: var(--muted); }
.terminal-content { padding: clamp(24px, 5vw, 46px); }
.system { color: var(--muted); }
.warning { color: var(--amber); }
.divider { background: var(--line); }
h1 { color: var(--green); text-shadow: 0 0 18px rgba(124,219,152,.18); }
.description { color: var(--muted); }
.question-box { background: rgba(6,16,13,.72); border-color: var(--line); border-radius: 10px; }
.question-label { color: var(--muted); }
#question { color: var(--ink); }
.answers { gap: 12px; }
.answer { padding: 15px 18px; background: rgba(16,35,26,.75); border-color: var(--line); border-radius: 8px; color: var(--ink); transition: background .2s ease, border-color .2s ease, transform .2s ease; }
.answer:hover, .answer:focus-visible { background: rgba(124,219,152,.1); border-color: rgba(124,219,152,.6); color: #fff; transform: translateX(4px); outline: none; }
.answer.correct { background: rgba(124,219,152,.14); border-color: var(--green); }
.answer.wrong { background: rgba(241,200,107,.05); border-color: rgba(241,200,107,.35); color: #988a68; }
.message { color: var(--muted); }
.control-button { padding: 10px 14px; border-color: var(--line); border-radius: 7px; color: var(--green); }
.control-button:hover, .control-button:focus-visible { border-color: var(--green); background: rgba(124,219,152,.1); outline: none; }
.hint { border-left-color: var(--green); border-radius: 0 8px 8px 0; background: rgba(124,219,152,.08); color: var(--muted); }
footer { border-top-color: var(--line); }
.footer-info { color: var(--muted); }
.footer-links a { color: var(--green); }

@media (max-width: 600px) {
    .page { width: calc(100% - 18px); margin: 16px auto; }
    header { flex-wrap: wrap; }
    .terminal-content { padding: 24px 18px; }
}