html, body {
    overflow-x: hidden;
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #003366;
    color: white;
    text-align: center;
}
header, footer {
    background: #003366;
    padding: 20px;
}
header h1 {
    font-size: 28px;
    margin: 0;
}
.main-content {
    padding: 40px 20px;
}
/* Activate button bottom left styles (updated: round, smaller, flush left) */
.activate-btn {
    position: fixed;
    left: 12px;            /* distance from left edge */
    bottom: 12px;          /* distance from bottom edge */
    height: 32px;           /* square for circle */
    padding: 0 12px;         /* allow room for the word */
    background: #007bff;
    color: transparent;        /* hide original inline text (main.js puts "A") */
    font-size: 0;              /* hide inline text; use ::after for visible label */
    font-weight: bold;
    border: none;
    border-radius: 20px;       /* still very rounded (pill) */
    cursor: pointer;
    z-index: 1000;
    opacity: 0;            /* hidden until hover/focus on area */
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    transition: opacity 0.18s, transform 0.12s;
    box-shadow: 0 2px 6px rgba(0,0,0,0.18);
    line-height: 1;
}

/* visible label injected via CSS so we don't need to change main.js */
.activate-btn::after {
    content: "Activate";
    color: #fff;
    font-size: 12px;           /* slightly smaller text */
    font-weight: 600;
    line-height: 1;
    display: inline-block;
}

/* hover / focus behavior unchanged */
.activate-btn:hover, .activate-btn:focus, .activate-btn:active {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(-1px);
}

/* enlarge the invisible hit area to match pill width */
.activate-btn-area {
    position: fixed;
    left: 8px;
    bottom: 8px;
    width: 92px;               /* wide enough to comfortably hover over label */
    height: 44px;
    z-index: 999;
    background: transparent; /* invisible hit area */
    display: block;
}
.activate-btn-area:hover .activate-btn,
.activate-btn-area:focus-within .activate-btn {
    opacity: 1;
    pointer-events: auto;
}