.btn {
    padding: 14px 28px;
    border-radius: 14px;

    font-weight: 600;
    letter-spacing: 0.3px;

    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(10px);

    border: 1px solid rgba(255, 255, 255, 0.12);
    color: #EFDFC5;

    cursor: pointer;
    transition:
        transform 0.15s ease,
        box-shadow 0.2s ease,
        border-color 0.2s ease,
        color 0.2s ease;
}

.btn.primary {
    --accent: #8F0B13;

    border-color: color-mix(in srgb, var(--accent) 40%, transparent);
    color: #EFDFC5;

    box-shadow:
        0 0 0 rgba(0, 0, 0, 0),
        0 0 12px color-mix(in srgb, var(--accent) 25%, transparent);
}

.btn.primary:hover {
    transform: translateY(-1px);

    box-shadow:
        0 0 12px color-mix(in srgb, var(--accent) 40%, transparent),
        0 0 28px color-mix(in srgb, var(--accent) 20%, transparent);

    border-color: var(--accent);
    color: #fff;
}

.btn.apply {
    --accent: #8F0B13;

    border-color: color-mix(in srgb, var(--accent) 45%, transparent);
    color: #fff;

    box-shadow:
        0 0 12px rgba(143, 11, 19, 0.35),
        0 0 28px rgba(143, 11, 19, 0.15);

    animation: pulse-glow 3.2s ease-in-out infinite;
}

.btn.apply:hover {
    animation: none;

    box-shadow:
        0 0 18px rgba(143, 11, 19, 0.55),
        0 0 40px rgba(143, 11, 19, 0.25);
}

@keyframes pulse-glow {
    0% {
        box-shadow:
            0 0 10px rgba(143, 11, 19, 0.25),
            0 0 22px rgba(143, 11, 19, 0.12);
    }
    50% {
        box-shadow:
            0 0 16px rgba(143, 11, 19, 0.45),
            0 0 36px rgba(143, 11, 19, 0.22);
    }
    100% {
        box-shadow:
            0 0 10px rgba(143, 11, 19, 0.25),
            0 0 22px rgba(143, 11, 19, 0.12);
    }
}

.btn.ghost {
    border-color: rgba(255, 255, 255, 0.08);
    box-shadow: none;
}

.btn.ghost:hover {
    border-color: rgba(255, 255, 255, 0.25);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.15);
}