@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;700&display=swap');

:root {
    --background: #0d1117;
    --primary: #58a6ff;
    --green-light: #3fb950;
    --glow-color: rgba(88, 166, 255, 0.5);
    --card-bg: #161b22;
    --border-color: #30363d;
    --text-color: #c9d1d9;
    --text-muted: #8b949e;
}

body {
    background-color: var(--background);
    color: var(--text-color);
    font-family: 'Fira Code', monospace;
    margin: 0;
    padding: 20px;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    border: 1px solid var(--border-color);
    padding: 20px;
    background: rgba(0, 0, 0, 0.2);
    box-shadow: 0 0 25px rgba(0, 0, 0, 0.4);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
    margin-bottom: 30px;
}

#logo {
    font-size: 1.5em;
    color: var(--primary);
    text-shadow: 0 0 8px var(--glow-color);
}

nav span {
    color: var(--text-muted);
}

.online {
    color: var(--green-light);
    font-weight: bold;
}

h1 {
    font-size: 1.8em;
    color: var(--green-light);
    border-right: 2px solid var(--green-light);
    white-space: nowrap;
    overflow: hidden;
    margin: 0 auto 40px auto;
    width: 31ch;
    animation: typewriter 3s steps(31) 1s 1 normal both,
               blinkTextCursor 500ms steps(31) infinite normal;
}

@keyframes typewriter {
    from { width: 0; }
    to { width: 31ch; }
}
@keyframes blinkTextCursor {
    from { border-right-color: var(--green-light); }
    to { border-right-color: transparent; }
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.mission-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 25px;
    transition: all 0.3s ease;
}

.mission-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 0 15px var(--glow-color);
}

.mission-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 15px;
}

.mission-header h2 {
    margin: 0;
    color: var(--primary);
    font-size: 1.3em;
}

.difficulty {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8em;
    font-weight: bold;
}
.difficulty.easy { background-color: #2ea043; color: white; }
.difficulty.medium { background-color: #dbab09; color: white; }
.difficulty.hard { background-color: #da3633; color: white; }

.mission-card p {
    color: var(--text-muted);
    line-height: 1.6;
}

.btn {
    display: inline-block;
    text-decoration: none;
    background-color: var(--primary);
    color: var(--background);
    padding: 10px 15px;
    margin-top: 10px;
    border: 1px solid var(--primary);
    font-weight: bold;
    transition: all 0.3s ease;
}

.btn:hover {
    background-color: transparent;
    color: var(--primary);
}

.btn.probe {
    background: transparent;
    border: 1px solid var(--text-muted);
    color: var(--text-muted);
}
.btn.probe:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn.disabled {
    background: var(--border-color);
    color: var(--text-muted);
    border-color: var(--border-color);
    cursor: not-allowed;
}

footer {
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9em;
}