.download-url-button {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 30px;
    border: 2px solid rgba(255, 255, 255, 0.12);
    border-radius: 12px;
    background: linear-gradient(120deg, var(--signal-red), var(--signal-violet) 50%, var(--signal-cyan));
    background-size: 220% 100%;
    background-position: 0% 0%;
    color: white;
    font-family: var(--display);
    font-weight: 700;
    font-size: 1.02em;
    letter-spacing: 0.01em;
    cursor: pointer;
    overflow: hidden;
    white-space: nowrap;
    /* Comic/sticker offset shadow at rest, pulled flush on press — this
       needs to read as poppable the instant the page loads. */
    box-shadow: var(--sticker-shadow), 0 0 22px rgba(255, 46, 109, 0.4);
    animation: button-breathe 1.8s ease-in-out infinite;
    transition: transform 0.15s var(--bounce), box-shadow 0.15s ease, background-position 0.4s;
}

.download-url-button::before {
    content: '↓';
    font-size: 1.15em;
    line-height: 1;
    animation: arrow-bounce 1s ease-in-out infinite;
}

@keyframes arrow-bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(3px); }
}

.download-url-button::after {
    content: '';
    position: absolute;
    top: 0;
    left: -60%;
    width: 40%;
    height: 100%;
    background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.45), transparent);
    transform: skewX(-20deg);
    transition: left 0.6s ease;
}

@keyframes button-breathe {
    0%, 100% { transform: translate(-1px, -1px); box-shadow: var(--sticker-shadow), 0 0 20px rgba(255, 46, 109, 0.35); }
    50% { transform: translate(-1px, -3px); box-shadow: var(--sticker-shadow-hover), 0 0 30px rgba(46, 230, 198, 0.4); }
}

.download-url-button:hover {
    transform: translate(-2px, -5px) rotate(-1deg) scale(1.03);
    background-position: 100% 0%;
    box-shadow: var(--sticker-shadow-hover), var(--glow-cyan);
}

.download-url-button:hover::after {
    left: 130%;
}

.download-url-button:active {
    transform: translate(2px, 2px) scale(0.97);
    box-shadow: 1px 1px 0 rgba(0, 0, 0, 0.55);
}

.download-url-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    animation: none;
    transform: none;
    box-shadow: none;
}